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+/**
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+ * include/enet.h - a Single-Header auto-generated variant of enet.h library.
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+ *
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+ * Usage:
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+ * #define ENET_IMPLEMENTATION exactly in ONE source file right BEFORE including the library, like:
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+ *
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+ * #define ENET_IMPLEMENTATION
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+ * #include <enet.h>
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+ *
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+ * License:
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+ * The MIT License (MIT)
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+ *
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+ * Copyright (c) 2002-2016 Lee Salzman
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+ * Copyright (c) 2017-2018 Vladyslav Hrytsenko, Dominik Madarász
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a copy
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+ * of this software and associated documentation files (the "Software"), to deal
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+ * in the Software without restriction, including without limitation the rights
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+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+ * copies of the Software, and to permit persons to whom the Software is
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+ * furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in all
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+ * copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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+ * SOFTWARE.
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+ *
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+ */
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+#ifndef ENET_INCLUDE_H
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+#define ENET_INCLUDE_H
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+
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+#include <stdlib.h>
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+#include <stdbool.h>
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+#include <stdint.h>
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+#include <time.h>
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+
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+#define ENET_VERSION_MAJOR 2
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+#define ENET_VERSION_MINOR 2
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+#define ENET_VERSION_PATCH 0
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+#define ENET_VERSION_CREATE(major, minor, patch) (((major)<<16) | ((minor)<<8) | (patch))
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+#define ENET_VERSION_GET_MAJOR(version) (((version)>>16)&0xFF)
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+#define ENET_VERSION_GET_MINOR(version) (((version)>>8)&0xFF)
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+#define ENET_VERSION_GET_PATCH(version) ((version)&0xFF)
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+#define ENET_VERSION ENET_VERSION_CREATE(ENET_VERSION_MAJOR, ENET_VERSION_MINOR, ENET_VERSION_PATCH)
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+
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+#define ENET_TIME_OVERFLOW 86400000
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+#define ENET_TIME_LESS(a, b) ((a) - (b) >= ENET_TIME_OVERFLOW)
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+#define ENET_TIME_GREATER(a, b) ((b) - (a) >= ENET_TIME_OVERFLOW)
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+#define ENET_TIME_LESS_EQUAL(a, b) (! ENET_TIME_GREATER (a, b))
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+#define ENET_TIME_GREATER_EQUAL(a, b) (! ENET_TIME_LESS (a, b))
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+#define ENET_TIME_DIFFERENCE(a, b) ((a) - (b) >= ENET_TIME_OVERFLOW ? (b) - (a) : (a) - (b))
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+
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+// =======================================================================//
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+// !
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+// ! System differences
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+// !
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+// =======================================================================//
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+
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+#if defined(_WIN32)
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+ #if defined(_MSC_VER) && defined(ENET_IMPLEMENTATION)
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+ #pragma warning (disable: 4267) // size_t to int conversion
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+ #pragma warning (disable: 4244) // 64bit to 32bit int
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+ #pragma warning (disable: 4018) // signed/unsigned mismatch
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+ #pragma warning (disable: 4146) // unary minus operator applied to unsigned type
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+ #endif
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+
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+ #ifndef ENET_NO_PRAGMA_LINK
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+ #pragma comment(lib, "ws2_32.lib")
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+ #pragma comment(lib, "winmm.lib")
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+ #endif
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+
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+ #if _MSC_VER >= 1910
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+ /* It looks like there were changes as of Visual Studio 2017 and there are no 32/64 bit
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+ versions of _InterlockedExchange[operation], only InterlockedExchange[operation]
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+ (without leading underscore), so we have to distinguish between compiler versions */
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+ #define NOT_UNDERSCORED_INTERLOCKED_EXCHANGE
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+ #endif
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+
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+ #ifdef __GNUC__
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+ #if (_WIN32_WINNT < 0x0501)
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+ #undef _WIN32_WINNT
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+ #define _WIN32_WINNT 0x0501
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+ #endif
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+ #endif
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+
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+ #include <winsock2.h>
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+ #include <ws2tcpip.h>
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+ #include <mmsystem.h>
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+
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+ #include <intrin.h>
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+
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+ #if defined(_WIN32) && defined(_MSC_VER)
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+ #if _MSC_VER < 1900
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+ typedef struct timespec {
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+ long tv_sec;
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+ long tv_nsec;
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+ };
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+ #endif
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+ #define CLOCK_MONOTONIC 0
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+ #endif
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+
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+ typedef SOCKET ENetSocket;
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+ #define ENET_SOCKET_NULL INVALID_SOCKET
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+
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+ #define ENET_HOST_TO_NET_16(value) (htons(value))
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+ #define ENET_HOST_TO_NET_32(value) (htonl(value))
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+
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+ #define ENET_NET_TO_HOST_16(value) (ntohs(value))
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+ #define ENET_NET_TO_HOST_32(value) (ntohl(value))
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+
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+ typedef struct {
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+ size_t dataLength;
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+ void * data;
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+ } ENetBuffer;
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+
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+ #define ENET_CALLBACK __cdecl
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+
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+ #ifdef ENET_DLL
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+ #ifdef ENET_IMPLEMENTATION
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+ #define ENET_API __declspec( dllexport )
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+ #else
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+ #define ENET_API __declspec( dllimport )
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+ #endif // ENET_IMPLEMENTATION
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+ #else
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+ #define ENET_API extern
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+ #endif // ENET_DLL
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+
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+ typedef fd_set ENetSocketSet;
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+
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+ #define ENET_SOCKETSET_EMPTY(sockset) FD_ZERO(&(sockset))
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+ #define ENET_SOCKETSET_ADD(sockset, socket) FD_SET(socket, &(sockset))
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+ #define ENET_SOCKETSET_REMOVE(sockset, socket) FD_CLR(socket, &(sockset))
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+ #define ENET_SOCKETSET_CHECK(sockset, socket) FD_ISSET(socket, &(sockset))
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+#else
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+ #include <sys/types.h>
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+ #include <sys/ioctl.h>
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+ #include <sys/time.h>
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+ #include <sys/socket.h>
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+ #include <poll.h>
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+ #include <arpa/inet.h>
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+ #include <netinet/in.h>
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+ #include <netinet/tcp.h>
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+ #include <netdb.h>
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+ #include <unistd.h>
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+ #include <string.h>
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+ #include <errno.h>
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+ #include <fcntl.h>
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+
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+ #ifdef __APPLE__
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+ #include <mach/clock.h>
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+ #include <mach/mach.h>
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+ #include <Availability.h>
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+ #endif
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+
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+ #ifndef MSG_NOSIGNAL
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+ #define MSG_NOSIGNAL 0
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+ #endif
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+
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+ #ifdef MSG_MAXIOVLEN
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+ #define ENET_BUFFER_MAXIMUM MSG_MAXIOVLEN
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+ #endif
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+
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+ typedef int ENetSocket;
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+
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+ #define ENET_SOCKET_NULL -1
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+
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+ #define ENET_HOST_TO_NET_16(value) (htons(value)) /**< macro that converts host to net byte-order of a 16-bit value */
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+ #define ENET_HOST_TO_NET_32(value) (htonl(value)) /**< macro that converts host to net byte-order of a 32-bit value */
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+
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+ #define ENET_NET_TO_HOST_16(value) (ntohs(value)) /**< macro that converts net to host byte-order of a 16-bit value */
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+ #define ENET_NET_TO_HOST_32(value) (ntohl(value)) /**< macro that converts net to host byte-order of a 32-bit value */
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+
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+ typedef struct {
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+ void * data;
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+ size_t dataLength;
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+ } ENetBuffer;
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+
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+ #define ENET_CALLBACK
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+ #define ENET_API extern
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+
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+ typedef fd_set ENetSocketSet;
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+
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+ #define ENET_SOCKETSET_EMPTY(sockset) FD_ZERO(&(sockset))
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+ #define ENET_SOCKETSET_ADD(sockset, socket) FD_SET(socket, &(sockset))
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+ #define ENET_SOCKETSET_REMOVE(sockset, socket) FD_CLR(socket, &(sockset))
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+ #define ENET_SOCKETSET_CHECK(sockset, socket) FD_ISSET(socket, &(sockset))
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+#endif
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+
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+#ifndef ENET_BUFFER_MAXIMUM
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+#define ENET_BUFFER_MAXIMUM (1 + 2 * ENET_PROTOCOL_MAXIMUM_PACKET_COMMANDS)
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+#endif
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+
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+#define ENET_UNUSED(x) (void)x;
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+
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+#define ENET_MAX(x, y) ((x) > (y) ? (x) : (y))
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+#define ENET_MIN(x, y) ((x) < (y) ? (x) : (y))
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+
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+#define ENET_IPV6 1
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+#define ENET_HOST_ANY in6addr_any
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+#define ENET_HOST_BROADCAST 0xFFFFFFFFU
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+#define ENET_PORT_ANY 0
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+
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+#ifdef __cplusplus
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+extern "C" {
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+#endif
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+
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+// =======================================================================//
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+// !
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+// ! Basic stuff
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+// !
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+// =======================================================================//
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+
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+ typedef uint8_t enet_uint8; /**< unsigned 8-bit type */
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+ typedef uint16_t enet_uint16; /**< unsigned 16-bit type */
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+ typedef uint32_t enet_uint32; /**< unsigned 32-bit type */
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+ typedef uint64_t enet_uint64; /**< unsigned 64-bit type */
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+
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+ typedef enet_uint32 ENetVersion;
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+
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+ typedef struct _ENetCallbacks {
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+ void *(ENET_CALLBACK *malloc) (size_t size);
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+ void (ENET_CALLBACK *free) (void *memory);
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+ void (ENET_CALLBACK *no_memory) (void);
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+ } ENetCallbacks;
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+
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+ extern void *enet_malloc(size_t);
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+ extern void enet_free(void *);
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+
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+// =======================================================================//
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+// !
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+// ! List
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+// !
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+// =======================================================================//
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+
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+ typedef struct _ENetListNode {
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+ struct _ENetListNode *next;
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+ struct _ENetListNode *previous;
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+ } ENetListNode;
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+
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+ typedef ENetListNode *ENetListIterator;
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+
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+ typedef struct _ENetList {
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+ ENetListNode sentinel;
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+ } ENetList;
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+
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+ extern ENetListIterator enet_list_insert(ENetListIterator, void *);
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+ extern ENetListIterator enet_list_move(ENetListIterator, void *, void *);
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+
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+ extern void *enet_list_remove(ENetListIterator);
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+ extern void enet_list_clear(ENetList *);
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+ extern size_t enet_list_size(ENetList *);
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+
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+ #define enet_list_begin(list) ((list)->sentinel.next)
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+ #define enet_list_end(list) (&(list)->sentinel)
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+ #define enet_list_empty(list) (enet_list_begin(list) == enet_list_end(list))
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+ #define enet_list_next(iterator) ((iterator)->next)
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+ #define enet_list_previous(iterator) ((iterator)->previous)
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+ #define enet_list_front(list) ((void *)(list)->sentinel.next)
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+ #define enet_list_back(list) ((void *)(list)->sentinel.previous)
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+
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+
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+// =======================================================================//
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+// !
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+// ! Protocol
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+// !
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+// =======================================================================//
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+
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+ enum {
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+ ENET_PROTOCOL_MINIMUM_MTU = 576,
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+ ENET_PROTOCOL_MAXIMUM_MTU = 4096,
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+ ENET_PROTOCOL_MAXIMUM_PACKET_COMMANDS = 32,
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+ ENET_PROTOCOL_MINIMUM_WINDOW_SIZE = 4096,
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+ ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE = 65536,
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+ ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT = 1,
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+ ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT = 255,
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+ ENET_PROTOCOL_MAXIMUM_PEER_ID = 0xFFF,
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+ ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT = 1024 * 1024
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+ };
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+
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+ typedef enum _ENetProtocolCommand {
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+ ENET_PROTOCOL_COMMAND_NONE = 0,
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+ ENET_PROTOCOL_COMMAND_ACKNOWLEDGE = 1,
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+ ENET_PROTOCOL_COMMAND_CONNECT = 2,
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+ ENET_PROTOCOL_COMMAND_VERIFY_CONNECT = 3,
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+ ENET_PROTOCOL_COMMAND_DISCONNECT = 4,
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+ ENET_PROTOCOL_COMMAND_PING = 5,
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+ ENET_PROTOCOL_COMMAND_SEND_RELIABLE = 6,
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+ ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE = 7,
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+ ENET_PROTOCOL_COMMAND_SEND_FRAGMENT = 8,
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+ ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED = 9,
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+ ENET_PROTOCOL_COMMAND_BANDWIDTH_LIMIT = 10,
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+ ENET_PROTOCOL_COMMAND_THROTTLE_CONFIGURE = 11,
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+ ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT = 12,
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+ ENET_PROTOCOL_COMMAND_COUNT = 13,
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+
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+ ENET_PROTOCOL_COMMAND_MASK = 0x0F
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+ } ENetProtocolCommand;
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+
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+ typedef enum _ENetProtocolFlag {
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+ ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE = (1 << 7),
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+ ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED = (1 << 6),
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+
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+ ENET_PROTOCOL_HEADER_FLAG_COMPRESSED = (1 << 14),
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+ ENET_PROTOCOL_HEADER_FLAG_SENT_TIME = (1 << 15),
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+ ENET_PROTOCOL_HEADER_FLAG_MASK = ENET_PROTOCOL_HEADER_FLAG_COMPRESSED | ENET_PROTOCOL_HEADER_FLAG_SENT_TIME,
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+
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+ ENET_PROTOCOL_HEADER_SESSION_MASK = (3 << 12),
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+ ENET_PROTOCOL_HEADER_SESSION_SHIFT = 12
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+ } ENetProtocolFlag;
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+
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+ #ifdef _MSC_VER
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+ #pragma pack(push, 1)
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+ #define ENET_PACKED
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+ #elif defined(__GNUC__) || defined(__clang__)
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+ #define ENET_PACKED __attribute__ ((packed))
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+ #else
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+ #define ENET_PACKED
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+ #endif
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+
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+ typedef struct _ENetProtocolHeader {
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+ enet_uint16 peerID;
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+ enet_uint16 sentTime;
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+ } ENET_PACKED ENetProtocolHeader;
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+
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+ typedef struct _ENetProtocolCommandHeader {
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+ enet_uint8 command;
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+ enet_uint8 channelID;
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+ enet_uint16 reliableSequenceNumber;
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+ } ENET_PACKED ENetProtocolCommandHeader;
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+
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+ typedef struct _ENetProtocolAcknowledge {
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+ ENetProtocolCommandHeader header;
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+ enet_uint16 receivedReliableSequenceNumber;
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+ enet_uint16 receivedSentTime;
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+ } ENET_PACKED ENetProtocolAcknowledge;
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+
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+ typedef struct _ENetProtocolConnect {
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+ ENetProtocolCommandHeader header;
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+ enet_uint16 outgoingPeerID;
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+ enet_uint8 incomingSessionID;
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+ enet_uint8 outgoingSessionID;
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+ enet_uint32 mtu;
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+ enet_uint32 windowSize;
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+ enet_uint32 channelCount;
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+ enet_uint32 incomingBandwidth;
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+ enet_uint32 outgoingBandwidth;
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+ enet_uint32 packetThrottleInterval;
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+ enet_uint32 packetThrottleAcceleration;
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+ enet_uint32 packetThrottleDeceleration;
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+ enet_uint32 connectID;
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+ enet_uint32 data;
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+ } ENET_PACKED ENetProtocolConnect;
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+
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+ typedef struct _ENetProtocolVerifyConnect {
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+ ENetProtocolCommandHeader header;
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+ enet_uint16 outgoingPeerID;
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+ enet_uint8 incomingSessionID;
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+ enet_uint8 outgoingSessionID;
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+ enet_uint32 mtu;
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+ enet_uint32 windowSize;
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+ enet_uint32 channelCount;
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+ enet_uint32 incomingBandwidth;
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+ enet_uint32 outgoingBandwidth;
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+ enet_uint32 packetThrottleInterval;
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+ enet_uint32 packetThrottleAcceleration;
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+ enet_uint32 packetThrottleDeceleration;
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|
|
+ enet_uint32 connectID;
|
|
|
+ } ENET_PACKED ENetProtocolVerifyConnect;
|
|
|
+
|
|
|
+ typedef struct _ENetProtocolBandwidthLimit {
|
|
|
+ ENetProtocolCommandHeader header;
|
|
|
+ enet_uint32 incomingBandwidth;
|
|
|
+ enet_uint32 outgoingBandwidth;
|
|
|
+ } ENET_PACKED ENetProtocolBandwidthLimit;
|
|
|
+
|
|
|
+ typedef struct _ENetProtocolThrottleConfigure {
|
|
|
+ ENetProtocolCommandHeader header;
|
|
|
+ enet_uint32 packetThrottleInterval;
|
|
|
+ enet_uint32 packetThrottleAcceleration;
|
|
|
+ enet_uint32 packetThrottleDeceleration;
|
|
|
+ } ENET_PACKED ENetProtocolThrottleConfigure;
|
|
|
+
|
|
|
+ typedef struct _ENetProtocolDisconnect {
|
|
|
+ ENetProtocolCommandHeader header;
|
|
|
+ enet_uint32 data;
|
|
|
+ } ENET_PACKED ENetProtocolDisconnect;
|
|
|
+
|
|
|
+ typedef struct _ENetProtocolPing {
|
|
|
+ ENetProtocolCommandHeader header;
|
|
|
+ } ENET_PACKED ENetProtocolPing;
|
|
|
+
|
|
|
+ typedef struct _ENetProtocolSendReliable {
|
|
|
+ ENetProtocolCommandHeader header;
|
|
|
+ enet_uint16 dataLength;
|
|
|
+ } ENET_PACKED ENetProtocolSendReliable;
|
|
|
+
|
|
|
+ typedef struct _ENetProtocolSendUnreliable {
|
|
|
+ ENetProtocolCommandHeader header;
|
|
|
+ enet_uint16 unreliableSequenceNumber;
|
|
|
+ enet_uint16 dataLength;
|
|
|
+ } ENET_PACKED ENetProtocolSendUnreliable;
|
|
|
+
|
|
|
+ typedef struct _ENetProtocolSendUnsequenced {
|
|
|
+ ENetProtocolCommandHeader header;
|
|
|
+ enet_uint16 unsequencedGroup;
|
|
|
+ enet_uint16 dataLength;
|
|
|
+ } ENET_PACKED ENetProtocolSendUnsequenced;
|
|
|
+
|
|
|
+ typedef struct _ENetProtocolSendFragment {
|
|
|
+ ENetProtocolCommandHeader header;
|
|
|
+ enet_uint16 startSequenceNumber;
|
|
|
+ enet_uint16 dataLength;
|
|
|
+ enet_uint32 fragmentCount;
|
|
|
+ enet_uint32 fragmentNumber;
|
|
|
+ enet_uint32 totalLength;
|
|
|
+ enet_uint32 fragmentOffset;
|
|
|
+ } ENET_PACKED ENetProtocolSendFragment;
|
|
|
+
|
|
|
+ typedef union _ENetProtocol {
|
|
|
+ ENetProtocolCommandHeader header;
|
|
|
+ ENetProtocolAcknowledge acknowledge;
|
|
|
+ ENetProtocolConnect connect;
|
|
|
+ ENetProtocolVerifyConnect verifyConnect;
|
|
|
+ ENetProtocolDisconnect disconnect;
|
|
|
+ ENetProtocolPing ping;
|
|
|
+ ENetProtocolSendReliable sendReliable;
|
|
|
+ ENetProtocolSendUnreliable sendUnreliable;
|
|
|
+ ENetProtocolSendUnsequenced sendUnsequenced;
|
|
|
+ ENetProtocolSendFragment sendFragment;
|
|
|
+ ENetProtocolBandwidthLimit bandwidthLimit;
|
|
|
+ ENetProtocolThrottleConfigure throttleConfigure;
|
|
|
+ } ENET_PACKED ENetProtocol;
|
|
|
+
|
|
|
+ #ifdef _MSC_VER
|
|
|
+ #pragma pack(pop)
|
|
|
+ #endif
|
|
|
+
|
|
|
+// =======================================================================//
|
|
|
+// !
|
|
|
+// ! General ENet structs/enums
|
|
|
+// !
|
|
|
+// =======================================================================//
|
|
|
+
|
|
|
+ typedef enum _ENetSocketType {
|
|
|
+ ENET_SOCKET_TYPE_STREAM = 1,
|
|
|
+ ENET_SOCKET_TYPE_DATAGRAM = 2
|
|
|
+ } ENetSocketType;
|
|
|
+
|
|
|
+ typedef enum _ENetSocketWait {
|
|
|
+ ENET_SOCKET_WAIT_NONE = 0,
|
|
|
+ ENET_SOCKET_WAIT_SEND = (1 << 0),
|
|
|
+ ENET_SOCKET_WAIT_RECEIVE = (1 << 1),
|
|
|
+ ENET_SOCKET_WAIT_INTERRUPT = (1 << 2)
|
|
|
+ } ENetSocketWait;
|
|
|
+
|
|
|
+ typedef enum _ENetSocketOption {
|
|
|
+ ENET_SOCKOPT_NONBLOCK = 1,
|
|
|
+ ENET_SOCKOPT_BROADCAST = 2,
|
|
|
+ ENET_SOCKOPT_RCVBUF = 3,
|
|
|
+ ENET_SOCKOPT_SNDBUF = 4,
|
|
|
+ ENET_SOCKOPT_REUSEADDR = 5,
|
|
|
+ ENET_SOCKOPT_RCVTIMEO = 6,
|
|
|
+ ENET_SOCKOPT_SNDTIMEO = 7,
|
|
|
+ ENET_SOCKOPT_ERROR = 8,
|
|
|
+ ENET_SOCKOPT_NODELAY = 9,
|
|
|
+ ENET_SOCKOPT_IPV6_V6ONLY = 10,
|
|
|
+ } ENetSocketOption;
|
|
|
+
|
|
|
+ typedef enum _ENetSocketShutdown {
|
|
|
+ ENET_SOCKET_SHUTDOWN_READ = 0,
|
|
|
+ ENET_SOCKET_SHUTDOWN_WRITE = 1,
|
|
|
+ ENET_SOCKET_SHUTDOWN_READ_WRITE = 2
|
|
|
+ } ENetSocketShutdown;
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Portable internet address structure.
|
|
|
+ *
|
|
|
+ * The host must be specified in network byte-order, and the port must be in host
|
|
|
+ * byte-order. The constant ENET_HOST_ANY may be used to specify the default
|
|
|
+ * server host. The constant ENET_HOST_BROADCAST may be used to specify the
|
|
|
+ * broadcast address (255.255.255.255). This makes sense for enet_host_connect,
|
|
|
+ * but not for enet_host_create. Once a server responds to a broadcast, the
|
|
|
+ * address is updated from ENET_HOST_BROADCAST to the server's actual IP address.
|
|
|
+ */
|
|
|
+ typedef struct _ENetAddress {
|
|
|
+ struct in6_addr host;
|
|
|
+ enet_uint16 port;
|
|
|
+ enet_uint16 sin6_scope_id;
|
|
|
+ } ENetAddress;
|
|
|
+
|
|
|
+ #define in6_equal(in6_addr_a, in6_addr_b) (memcmp(&in6_addr_a, &in6_addr_b, sizeof(struct in6_addr)) == 0)
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Packet flag bit constants.
|
|
|
+ *
|
|
|
+ * The host must be specified in network byte-order, and the port must be in
|
|
|
+ * host byte-order. The constant ENET_HOST_ANY may be used to specify the
|
|
|
+ * default server host.
|
|
|
+ *
|
|
|
+ * @sa ENetPacket
|
|
|
+ */
|
|
|
+ typedef enum _ENetPacketFlag {
|
|
|
+ ENET_PACKET_FLAG_RELIABLE = (1 << 0), /** packet must be received by the target peer and resend attempts should be made until the packet is delivered */
|
|
|
+ ENET_PACKET_FLAG_UNSEQUENCED = (1 << 1), /** packet will not be sequenced with other packets not supported for reliable packets */
|
|
|
+ ENET_PACKET_FLAG_NO_ALLOCATE = (1 << 2), /** packet will not allocate data, and user must supply it instead */
|
|
|
+ ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT = (1 << 3), /** packet will be fragmented using unreliable (instead of reliable) sends if it exceeds the MTU */
|
|
|
+ ENET_PACKET_FLAG_SENT = (1 << 8), /** whether the packet has been sent from all queues it has been entered into */
|
|
|
+ } ENetPacketFlag;
|
|
|
+
|
|
|
+ typedef void (ENET_CALLBACK *ENetPacketFreeCallback)(void *);
|
|
|
+
|
|
|
+ /**
|
|
|
+ * ENet packet structure.
|
|
|
+ *
|
|
|
+ * An ENet data packet that may be sent to or received from a peer. The shown
|
|
|
+ * fields should only be read and never modified. The data field contains the
|
|
|
+ * allocated data for the packet. The dataLength fields specifies the length
|
|
|
+ * of the allocated data. The flags field is either 0 (specifying no flags),
|
|
|
+ * or a bitwise-or of any combination of the following flags:
|
|
|
+ *
|
|
|
+ * ENET_PACKET_FLAG_RELIABLE - packet must be received by the target peer and resend attempts should be made until the packet is delivered
|
|
|
+ * ENET_PACKET_FLAG_UNSEQUENCED - packet will not be sequenced with other packets (not supported for reliable packets)
|
|
|
+ * ENET_PACKET_FLAG_NO_ALLOCATE - packet will not allocate data, and user must supply it instead
|
|
|
+ * ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT - packet will be fragmented using unreliable (instead of reliable) sends if it exceeds the MTU
|
|
|
+ * ENET_PACKET_FLAG_SENT - whether the packet has been sent from all queues it has been entered into
|
|
|
+ * @sa ENetPacketFlag
|
|
|
+ */
|
|
|
+ typedef struct _ENetPacket {
|
|
|
+ size_t referenceCount; /**< internal use only */
|
|
|
+ enet_uint32 flags; /**< bitwise-or of ENetPacketFlag constants */
|
|
|
+ enet_uint8 * data; /**< allocated data for packet */
|
|
|
+ size_t dataLength; /**< length of data */
|
|
|
+ ENetPacketFreeCallback freeCallback; /**< function to be called when the packet is no longer in use */
|
|
|
+ void * userData; /**< application private data, may be freely modified */
|
|
|
+ } ENetPacket;
|
|
|
+
|
|
|
+ typedef struct _ENetAcknowledgement {
|
|
|
+ ENetListNode acknowledgementList;
|
|
|
+ enet_uint32 sentTime;
|
|
|
+ ENetProtocol command;
|
|
|
+ } ENetAcknowledgement;
|
|
|
+
|
|
|
+ typedef struct _ENetOutgoingCommand {
|
|
|
+ ENetListNode outgoingCommandList;
|
|
|
+ enet_uint16 reliableSequenceNumber;
|
|
|
+ enet_uint16 unreliableSequenceNumber;
|
|
|
+ enet_uint32 sentTime;
|
|
|
+ enet_uint32 roundTripTimeout;
|
|
|
+ enet_uint32 roundTripTimeoutLimit;
|
|
|
+ enet_uint32 fragmentOffset;
|
|
|
+ enet_uint16 fragmentLength;
|
|
|
+ enet_uint16 sendAttempts;
|
|
|
+ ENetProtocol command;
|
|
|
+ ENetPacket * packet;
|
|
|
+ } ENetOutgoingCommand;
|
|
|
+
|
|
|
+ typedef struct _ENetIncomingCommand {
|
|
|
+ ENetListNode incomingCommandList;
|
|
|
+ enet_uint16 reliableSequenceNumber;
|
|
|
+ enet_uint16 unreliableSequenceNumber;
|
|
|
+ ENetProtocol command;
|
|
|
+ enet_uint32 fragmentCount;
|
|
|
+ enet_uint32 fragmentsRemaining;
|
|
|
+ enet_uint32 *fragments;
|
|
|
+ ENetPacket * packet;
|
|
|
+ } ENetIncomingCommand;
|
|
|
+
|
|
|
+ typedef enum _ENetPeerState {
|
|
|
+ ENET_PEER_STATE_DISCONNECTED = 0,
|
|
|
+ ENET_PEER_STATE_CONNECTING = 1,
|
|
|
+ ENET_PEER_STATE_ACKNOWLEDGING_CONNECT = 2,
|
|
|
+ ENET_PEER_STATE_CONNECTION_PENDING = 3,
|
|
|
+ ENET_PEER_STATE_CONNECTION_SUCCEEDED = 4,
|
|
|
+ ENET_PEER_STATE_CONNECTED = 5,
|
|
|
+ ENET_PEER_STATE_DISCONNECT_LATER = 6,
|
|
|
+ ENET_PEER_STATE_DISCONNECTING = 7,
|
|
|
+ ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT = 8,
|
|
|
+ ENET_PEER_STATE_ZOMBIE = 9
|
|
|
+ } ENetPeerState;
|
|
|
+
|
|
|
+ enum {
|
|
|
+ ENET_HOST_RECEIVE_BUFFER_SIZE = 256 * 1024,
|
|
|
+ ENET_HOST_SEND_BUFFER_SIZE = 256 * 1024,
|
|
|
+ ENET_HOST_BANDWIDTH_THROTTLE_INTERVAL = 1000,
|
|
|
+ ENET_HOST_DEFAULT_MTU = 1400,
|
|
|
+ ENET_HOST_DEFAULT_MAXIMUM_PACKET_SIZE = 32 * 1024 * 1024,
|
|
|
+ ENET_HOST_DEFAULT_MAXIMUM_WAITING_DATA = 32 * 1024 * 1024,
|
|
|
+
|
|
|
+ ENET_PEER_DEFAULT_ROUND_TRIP_TIME = 500,
|
|
|
+ ENET_PEER_DEFAULT_PACKET_THROTTLE = 32,
|
|
|
+ ENET_PEER_PACKET_THROTTLE_SCALE = 32,
|
|
|
+ ENET_PEER_PACKET_THROTTLE_COUNTER = 7,
|
|
|
+ ENET_PEER_PACKET_THROTTLE_ACCELERATION = 2,
|
|
|
+ ENET_PEER_PACKET_THROTTLE_DECELERATION = 2,
|
|
|
+ ENET_PEER_PACKET_THROTTLE_INTERVAL = 5000,
|
|
|
+ ENET_PEER_PACKET_LOSS_SCALE = (1 << 16),
|
|
|
+ ENET_PEER_PACKET_LOSS_INTERVAL = 10000,
|
|
|
+ ENET_PEER_WINDOW_SIZE_SCALE = 64 * 1024,
|
|
|
+ ENET_PEER_TIMEOUT_LIMIT = 32,
|
|
|
+ ENET_PEER_TIMEOUT_MINIMUM = 5000,
|
|
|
+ ENET_PEER_TIMEOUT_MAXIMUM = 30000,
|
|
|
+ ENET_PEER_PING_INTERVAL = 500,
|
|
|
+ ENET_PEER_UNSEQUENCED_WINDOWS = 64,
|
|
|
+ ENET_PEER_UNSEQUENCED_WINDOW_SIZE = 1024,
|
|
|
+ ENET_PEER_FREE_UNSEQUENCED_WINDOWS = 32,
|
|
|
+ ENET_PEER_RELIABLE_WINDOWS = 16,
|
|
|
+ ENET_PEER_RELIABLE_WINDOW_SIZE = 0x1000,
|
|
|
+ ENET_PEER_FREE_RELIABLE_WINDOWS = 8
|
|
|
+ };
|
|
|
+
|
|
|
+ typedef struct _ENetChannel {
|
|
|
+ enet_uint16 outgoingReliableSequenceNumber;
|
|
|
+ enet_uint16 outgoingUnreliableSequenceNumber;
|
|
|
+ enet_uint16 usedReliableWindows;
|
|
|
+ enet_uint16 reliableWindows[ENET_PEER_RELIABLE_WINDOWS];
|
|
|
+ enet_uint16 incomingReliableSequenceNumber;
|
|
|
+ enet_uint16 incomingUnreliableSequenceNumber;
|
|
|
+ ENetList incomingReliableCommands;
|
|
|
+ ENetList incomingUnreliableCommands;
|
|
|
+ } ENetChannel;
|
|
|
+
|
|
|
+ /**
|
|
|
+ * An ENet peer which data packets may be sent or received from.
|
|
|
+ *
|
|
|
+ * No fields should be modified unless otherwise specified.
|
|
|
+ */
|
|
|
+ typedef struct _ENetPeer {
|
|
|
+ ENetListNode dispatchList;
|
|
|
+ struct _ENetHost *host;
|
|
|
+ enet_uint16 outgoingPeerID;
|
|
|
+ enet_uint16 incomingPeerID;
|
|
|
+ enet_uint32 connectID;
|
|
|
+ enet_uint8 outgoingSessionID;
|
|
|
+ enet_uint8 incomingSessionID;
|
|
|
+ ENetAddress address; /**< Internet address of the peer */
|
|
|
+ void * data; /**< Application private data, may be freely modified */
|
|
|
+ ENetPeerState state;
|
|
|
+ ENetChannel * channels;
|
|
|
+ size_t channelCount; /**< Number of channels allocated for communication with peer */
|
|
|
+ enet_uint32 incomingBandwidth; /**< Downstream bandwidth of the client in bytes/second */
|
|
|
+ enet_uint32 outgoingBandwidth; /**< Upstream bandwidth of the client in bytes/second */
|
|
|
+ enet_uint32 incomingBandwidthThrottleEpoch;
|
|
|
+ enet_uint32 outgoingBandwidthThrottleEpoch;
|
|
|
+ enet_uint32 incomingDataTotal;
|
|
|
+ enet_uint64 totalDataReceived;
|
|
|
+ enet_uint32 outgoingDataTotal;
|
|
|
+ enet_uint64 totalDataSent;
|
|
|
+ enet_uint32 lastSendTime;
|
|
|
+ enet_uint32 lastReceiveTime;
|
|
|
+ enet_uint32 nextTimeout;
|
|
|
+ enet_uint32 earliestTimeout;
|
|
|
+ enet_uint32 packetLossEpoch;
|
|
|
+ enet_uint32 packetsSent;
|
|
|
+ enet_uint64 totalPacketsSent; /**< total number of packets sent during a session */
|
|
|
+ enet_uint32 packetsLost;
|
|
|
+ enet_uint32 totalPacketsLost; /**< total number of packets lost during a session */
|
|
|
+ enet_uint32 packetLoss; /**< mean packet loss of reliable packets as a ratio with respect to the constant ENET_PEER_PACKET_LOSS_SCALE */
|
|
|
+ enet_uint32 packetLossVariance;
|
|
|
+ enet_uint32 packetThrottle;
|
|
|
+ enet_uint32 packetThrottleLimit;
|
|
|
+ enet_uint32 packetThrottleCounter;
|
|
|
+ enet_uint32 packetThrottleEpoch;
|
|
|
+ enet_uint32 packetThrottleAcceleration;
|
|
|
+ enet_uint32 packetThrottleDeceleration;
|
|
|
+ enet_uint32 packetThrottleInterval;
|
|
|
+ enet_uint32 pingInterval;
|
|
|
+ enet_uint32 timeoutLimit;
|
|
|
+ enet_uint32 timeoutMinimum;
|
|
|
+ enet_uint32 timeoutMaximum;
|
|
|
+ enet_uint32 lastRoundTripTime;
|
|
|
+ enet_uint32 lowestRoundTripTime;
|
|
|
+ enet_uint32 lastRoundTripTimeVariance;
|
|
|
+ enet_uint32 highestRoundTripTimeVariance;
|
|
|
+ enet_uint32 roundTripTime; /**< mean round trip time (RTT), in milliseconds, between sending a reliable packet and receiving its acknowledgement */
|
|
|
+ enet_uint32 roundTripTimeVariance;
|
|
|
+ enet_uint32 mtu;
|
|
|
+ enet_uint32 windowSize;
|
|
|
+ enet_uint32 reliableDataInTransit;
|
|
|
+ enet_uint16 outgoingReliableSequenceNumber;
|
|
|
+ ENetList acknowledgements;
|
|
|
+ ENetList sentReliableCommands;
|
|
|
+ ENetList sentUnreliableCommands;
|
|
|
+ ENetList outgoingReliableCommands;
|
|
|
+ ENetList outgoingUnreliableCommands;
|
|
|
+ ENetList dispatchedCommands;
|
|
|
+ int needsDispatch;
|
|
|
+ enet_uint16 incomingUnsequencedGroup;
|
|
|
+ enet_uint16 outgoingUnsequencedGroup;
|
|
|
+ enet_uint32 unsequencedWindow[ENET_PEER_UNSEQUENCED_WINDOW_SIZE / 32];
|
|
|
+ enet_uint32 eventData;
|
|
|
+ size_t totalWaitingData;
|
|
|
+ } ENetPeer;
|
|
|
+
|
|
|
+ /** An ENet packet compressor for compressing UDP packets before socket sends or receives. */
|
|
|
+ typedef struct _ENetCompressor {
|
|
|
+ /** Context data for the compressor. Must be non-NULL. */
|
|
|
+ void *context;
|
|
|
+
|
|
|
+ /** Compresses from inBuffers[0:inBufferCount-1], containing inLimit bytes, to outData, outputting at most outLimit bytes. Should return 0 on failure. */
|
|
|
+ size_t(ENET_CALLBACK * compress) (void *context, const ENetBuffer * inBuffers, size_t inBufferCount, size_t inLimit, enet_uint8 * outData, size_t outLimit);
|
|
|
+
|
|
|
+ /** Decompresses from inData, containing inLimit bytes, to outData, outputting at most outLimit bytes. Should return 0 on failure. */
|
|
|
+ size_t(ENET_CALLBACK * decompress) (void *context, const enet_uint8 * inData, size_t inLimit, enet_uint8 * outData, size_t outLimit);
|
|
|
+
|
|
|
+ /** Destroys the context when compression is disabled or the host is destroyed. May be NULL. */
|
|
|
+ void (ENET_CALLBACK * destroy)(void *context);
|
|
|
+ } ENetCompressor;
|
|
|
+
|
|
|
+ /** Callback that computes the checksum of the data held in buffers[0:bufferCount-1] */
|
|
|
+ typedef enet_uint32 (ENET_CALLBACK * ENetChecksumCallback)(const ENetBuffer *buffers, size_t bufferCount);
|
|
|
+
|
|
|
+ /** Callback for intercepting received raw UDP packets. Should return 1 to intercept, 0 to ignore, or -1 to propagate an error. */
|
|
|
+ typedef int (ENET_CALLBACK * ENetInterceptCallback)(struct _ENetHost *host, void *event);
|
|
|
+
|
|
|
+ /** An ENet host for communicating with peers.
|
|
|
+ *
|
|
|
+ * No fields should be modified unless otherwise stated.
|
|
|
+ *
|
|
|
+ * @sa enet_host_create()
|
|
|
+ * @sa enet_host_destroy()
|
|
|
+ * @sa enet_host_connect()
|
|
|
+ * @sa enet_host_service()
|
|
|
+ * @sa enet_host_flush()
|
|
|
+ * @sa enet_host_broadcast()
|
|
|
+ * @sa enet_host_compress()
|
|
|
+ * @sa enet_host_channel_limit()
|
|
|
+ * @sa enet_host_bandwidth_limit()
|
|
|
+ * @sa enet_host_bandwidth_throttle()
|
|
|
+ */
|
|
|
+ typedef struct _ENetHost {
|
|
|
+ ENetSocket socket;
|
|
|
+ ENetAddress address; /**< Internet address of the host */
|
|
|
+ enet_uint32 incomingBandwidth; /**< downstream bandwidth of the host */
|
|
|
+ enet_uint32 outgoingBandwidth; /**< upstream bandwidth of the host */
|
|
|
+ enet_uint32 bandwidthThrottleEpoch;
|
|
|
+ enet_uint32 mtu;
|
|
|
+ enet_uint32 randomSeed;
|
|
|
+ int recalculateBandwidthLimits;
|
|
|
+ ENetPeer * peers; /**< array of peers allocated for this host */
|
|
|
+ size_t peerCount; /**< number of peers allocated for this host */
|
|
|
+ size_t channelLimit; /**< maximum number of channels allowed for connected peers */
|
|
|
+ enet_uint32 serviceTime;
|
|
|
+ ENetList dispatchQueue;
|
|
|
+ int continueSending;
|
|
|
+ size_t packetSize;
|
|
|
+ enet_uint16 headerFlags;
|
|
|
+ ENetProtocol commands[ENET_PROTOCOL_MAXIMUM_PACKET_COMMANDS];
|
|
|
+ size_t commandCount;
|
|
|
+ ENetBuffer buffers[ENET_BUFFER_MAXIMUM];
|
|
|
+ size_t bufferCount;
|
|
|
+ ENetChecksumCallback checksum; /**< callback the user can set to enable packet checksums for this host */
|
|
|
+ ENetCompressor compressor;
|
|
|
+ enet_uint8 packetData[2][ENET_PROTOCOL_MAXIMUM_MTU];
|
|
|
+ ENetAddress receivedAddress;
|
|
|
+ enet_uint8 * receivedData;
|
|
|
+ size_t receivedDataLength;
|
|
|
+ enet_uint32 totalSentData; /**< total data sent, user should reset to 0 as needed to prevent overflow */
|
|
|
+ enet_uint32 totalSentPackets; /**< total UDP packets sent, user should reset to 0 as needed to prevent overflow */
|
|
|
+ enet_uint32 totalReceivedData; /**< total data received, user should reset to 0 as needed to prevent overflow */
|
|
|
+ enet_uint32 totalReceivedPackets; /**< total UDP packets received, user should reset to 0 as needed to prevent overflow */
|
|
|
+ ENetInterceptCallback intercept; /**< callback the user can set to intercept received raw UDP packets */
|
|
|
+ size_t connectedPeers;
|
|
|
+ size_t bandwidthLimitedPeers;
|
|
|
+ size_t duplicatePeers; /**< optional number of allowed peers from duplicate IPs, defaults to ENET_PROTOCOL_MAXIMUM_PEER_ID */
|
|
|
+ size_t maximumPacketSize; /**< the maximum allowable packet size that may be sent or received on a peer */
|
|
|
+ size_t maximumWaitingData; /**< the maximum aggregate amount of buffer space a peer may use waiting for packets to be delivered */
|
|
|
+ } ENetHost;
|
|
|
+
|
|
|
+ /**
|
|
|
+ * An ENet event type, as specified in @ref ENetEvent.
|
|
|
+ */
|
|
|
+ typedef enum _ENetEventType {
|
|
|
+ /** no event occurred within the specified time limit */
|
|
|
+ ENET_EVENT_TYPE_NONE = 0,
|
|
|
+
|
|
|
+ /** a connection request initiated by enet_host_connect has completed.
|
|
|
+ * The peer field contains the peer which successfully connected.
|
|
|
+ */
|
|
|
+ ENET_EVENT_TYPE_CONNECT = 1,
|
|
|
+
|
|
|
+ /** a peer has disconnected. This event is generated on a successful
|
|
|
+ * completion of a disconnect initiated by enet_peer_disconnect, if
|
|
|
+ * a peer has timed out. The peer field contains the peer
|
|
|
+ * which disconnected. The data field contains user supplied data
|
|
|
+ * describing the disconnection, or 0, if none is available.
|
|
|
+ */
|
|
|
+ ENET_EVENT_TYPE_DISCONNECT = 2,
|
|
|
+
|
|
|
+ /** a packet has been received from a peer. The peer field specifies the
|
|
|
+ * peer which sent the packet. The channelID field specifies the channel
|
|
|
+ * number upon which the packet was received. The packet field contains
|
|
|
+ * the packet that was received; this packet must be destroyed with
|
|
|
+ * enet_packet_destroy after use.
|
|
|
+ */
|
|
|
+ ENET_EVENT_TYPE_RECEIVE = 3,
|
|
|
+
|
|
|
+ /** a peer is disconnected because the host didn't receive the acknowledgment
|
|
|
+ * packet within certain maximum time out. The reason could be because of bad
|
|
|
+ * network connection or host crashed.
|
|
|
+ */
|
|
|
+ ENET_EVENT_TYPE_DISCONNECT_TIMEOUT = 4,
|
|
|
+ } ENetEventType;
|
|
|
+
|
|
|
+ /**
|
|
|
+ * An ENet event as returned by enet_host_service().
|
|
|
+ *
|
|
|
+ * @sa enet_host_service
|
|
|
+ */
|
|
|
+ typedef struct _ENetEvent {
|
|
|
+ ENetEventType type; /**< type of the event */
|
|
|
+ ENetPeer * peer; /**< peer that generated a connect, disconnect or receive event */
|
|
|
+ enet_uint8 channelID; /**< channel on the peer that generated the event, if appropriate */
|
|
|
+ enet_uint32 data; /**< data associated with the event, if appropriate */
|
|
|
+ ENetPacket * packet; /**< packet associated with the event, if appropriate */
|
|
|
+ } ENetEvent;
|
|
|
+
|
|
|
+// =======================================================================//
|
|
|
+// !
|
|
|
+// ! Public API
|
|
|
+// !
|
|
|
+// =======================================================================//
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Initializes ENet globally. Must be called prior to using any functions in ENet.
|
|
|
+ * @returns 0 on success, < 0 on failure
|
|
|
+ */
|
|
|
+ ENET_API int enet_initialize(void);
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Initializes ENet globally and supplies user-overridden callbacks. Must be called prior to using any functions in ENet. Do not use enet_initialize() if you use this variant. Make sure the ENetCallbacks structure is zeroed out so that any additional callbacks added in future versions will be properly ignored.
|
|
|
+ *
|
|
|
+ * @param version the constant ENET_VERSION should be supplied so ENet knows which version of ENetCallbacks struct to use
|
|
|
+ * @param inits user-overridden callbacks where any NULL callbacks will use ENet's defaults
|
|
|
+ * @returns 0 on success, < 0 on failure
|
|
|
+ */
|
|
|
+ ENET_API int enet_initialize_with_callbacks(ENetVersion version, const ENetCallbacks * inits);
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Shuts down ENet globally. Should be called when a program that has initialized ENet exits.
|
|
|
+ */
|
|
|
+ ENET_API void enet_deinitialize(void);
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Gives the linked version of the ENet library.
|
|
|
+ * @returns the version number
|
|
|
+ */
|
|
|
+ ENET_API ENetVersion enet_linked_version(void);
|
|
|
+
|
|
|
+ /** Returns the monotonic time in milliseconds. Its initial value is unspecified unless otherwise set. */
|
|
|
+ ENET_API enet_uint32 enet_time_get(void);
|
|
|
+
|
|
|
+ /** ENet socket functions */
|
|
|
+ ENET_API ENetSocket enet_socket_create(ENetSocketType);
|
|
|
+ ENET_API int enet_socket_bind(ENetSocket, const ENetAddress *);
|
|
|
+ ENET_API int enet_socket_get_address(ENetSocket, ENetAddress *);
|
|
|
+ ENET_API int enet_socket_listen(ENetSocket, int);
|
|
|
+ ENET_API ENetSocket enet_socket_accept(ENetSocket, ENetAddress *);
|
|
|
+ ENET_API int enet_socket_connect(ENetSocket, const ENetAddress *);
|
|
|
+ ENET_API int enet_socket_send(ENetSocket, const ENetAddress *, const ENetBuffer *, size_t);
|
|
|
+ ENET_API int enet_socket_receive(ENetSocket, ENetAddress *, ENetBuffer *, size_t);
|
|
|
+ ENET_API int enet_socket_wait(ENetSocket, enet_uint32 *, enet_uint64);
|
|
|
+ ENET_API int enet_socket_set_option(ENetSocket, ENetSocketOption, int);
|
|
|
+ ENET_API int enet_socket_get_option(ENetSocket, ENetSocketOption, int *);
|
|
|
+ ENET_API int enet_socket_shutdown(ENetSocket, ENetSocketShutdown);
|
|
|
+ ENET_API void enet_socket_destroy(ENetSocket);
|
|
|
+ ENET_API int enet_socketset_select(ENetSocket, ENetSocketSet *, ENetSocketSet *, enet_uint32);
|
|
|
+
|
|
|
+ /** Attempts to parse the printable form of the IP address in the parameter hostName
|
|
|
+ and sets the host field in the address parameter if successful.
|
|
|
+ @param address destination to store the parsed IP address
|
|
|
+ @param hostName IP address to parse
|
|
|
+ @retval 0 on success
|
|
|
+ @retval < 0 on failure
|
|
|
+ @returns the address of the given hostName in address on success
|
|
|
+ */
|
|
|
+ ENET_API int enet_address_set_host_ip(ENetAddress * address, const char * hostName);
|
|
|
+
|
|
|
+ /** Attempts to resolve the host named by the parameter hostName and sets
|
|
|
+ the host field in the address parameter if successful.
|
|
|
+ @param address destination to store resolved address
|
|
|
+ @param hostName host name to lookup
|
|
|
+ @retval 0 on success
|
|
|
+ @retval < 0 on failure
|
|
|
+ @returns the address of the given hostName in address on success
|
|
|
+ */
|
|
|
+ ENET_API int enet_address_set_host(ENetAddress * address, const char * hostName);
|
|
|
+
|
|
|
+ /** Gives the printable form of the IP address specified in the address parameter.
|
|
|
+ @param address address printed
|
|
|
+ @param hostName destination for name, must not be NULL
|
|
|
+ @param nameLength maximum length of hostName.
|
|
|
+ @returns the null-terminated name of the host in hostName on success
|
|
|
+ @retval 0 on success
|
|
|
+ @retval < 0 on failure
|
|
|
+ */
|
|
|
+ ENET_API int enet_address_get_host_ip(const ENetAddress * address, char * hostName, size_t nameLength);
|
|
|
+
|
|
|
+ /** Attempts to do a reverse lookup of the host field in the address parameter.
|
|
|
+ @param address address used for reverse lookup
|
|
|
+ @param hostName destination for name, must not be NULL
|
|
|
+ @param nameLength maximum length of hostName.
|
|
|
+ @returns the null-terminated name of the host in hostName on success
|
|
|
+ @retval 0 on success
|
|
|
+ @retval < 0 on failure
|
|
|
+ */
|
|
|
+ ENET_API int enet_address_get_host(const ENetAddress * address, char * hostName, size_t nameLength);
|
|
|
+
|
|
|
+ ENET_API enet_uint32 enet_host_get_peers_count(ENetHost *);
|
|
|
+ ENET_API enet_uint32 enet_host_get_packets_sent(ENetHost *);
|
|
|
+ ENET_API enet_uint32 enet_host_get_packets_received(ENetHost *);
|
|
|
+ ENET_API enet_uint32 enet_host_get_bytes_sent(ENetHost *);
|
|
|
+ ENET_API enet_uint32 enet_host_get_bytes_received(ENetHost *);
|
|
|
+ ENET_API enet_uint32 enet_host_get_received_data(ENetHost *, enet_uint8** data);
|
|
|
+ ENET_API enet_uint32 enet_host_get_mtu(ENetHost *);
|
|
|
+
|
|
|
+ ENET_API enet_uint32 enet_peer_get_id(ENetPeer *);
|
|
|
+ ENET_API enet_uint32 enet_peer_get_ip(ENetPeer *, char * ip, size_t ipLength);
|
|
|
+ ENET_API enet_uint16 enet_peer_get_port(ENetPeer *);
|
|
|
+ ENET_API enet_uint32 enet_peer_get_rtt(ENetPeer *);
|
|
|
+ ENET_API enet_uint64 enet_peer_get_packets_sent(ENetPeer *);
|
|
|
+ ENET_API enet_uint32 enet_peer_get_packets_lost(ENetPeer *);
|
|
|
+ ENET_API enet_uint64 enet_peer_get_bytes_sent(ENetPeer *);
|
|
|
+ ENET_API enet_uint64 enet_peer_get_bytes_received(ENetPeer *);
|
|
|
+
|
|
|
+ ENET_API ENetPeerState enet_peer_get_state(ENetPeer *);
|
|
|
+
|
|
|
+ ENET_API void * enet_peer_get_data(ENetPeer *);
|
|
|
+ ENET_API void enet_peer_set_data(ENetPeer *, const void *);
|
|
|
+
|
|
|
+ ENET_API void * enet_packet_get_data(ENetPacket *);
|
|
|
+ ENET_API enet_uint32 enet_packet_get_length(ENetPacket *);
|
|
|
+ ENET_API void enet_packet_set_free_callback(ENetPacket *, ENetPacketFreeCallback);
|
|
|
+
|
|
|
+ ENET_API ENetPacket * enet_packet_create(const void *, size_t, enet_uint32);
|
|
|
+ ENET_API ENetPacket * enet_packet_create_offset(const void *, size_t, size_t, enet_uint32);
|
|
|
+ ENET_API void enet_packet_destroy(ENetPacket *);
|
|
|
+ ENET_API enet_uint32 enet_crc32(const ENetBuffer *, size_t);
|
|
|
+
|
|
|
+ ENET_API ENetHost * enet_host_create(const ENetAddress *, size_t, size_t, enet_uint32, enet_uint32);
|
|
|
+ ENET_API void enet_host_destroy(ENetHost *);
|
|
|
+ ENET_API ENetPeer * enet_host_connect(ENetHost *, const ENetAddress *, size_t, enet_uint32);
|
|
|
+ ENET_API int enet_host_check_events(ENetHost *, ENetEvent *);
|
|
|
+ ENET_API int enet_host_service(ENetHost *, ENetEvent *, enet_uint32);
|
|
|
+ ENET_API int enet_host_send_raw(ENetHost *, const ENetAddress *, enet_uint8 *, size_t);
|
|
|
+ ENET_API int enet_host_send_raw_ex(ENetHost *host, const ENetAddress* address, enet_uint8* data, size_t skipBytes, size_t bytesToSend);
|
|
|
+ ENET_API void enet_host_set_intercept(ENetHost *, const ENetInterceptCallback);
|
|
|
+ ENET_API void enet_host_flush(ENetHost *);
|
|
|
+ ENET_API void enet_host_broadcast(ENetHost *, enet_uint8, ENetPacket *);
|
|
|
+ ENET_API void enet_host_compress(ENetHost *, const ENetCompressor *);
|
|
|
+ ENET_API void enet_host_channel_limit(ENetHost *, size_t);
|
|
|
+ ENET_API void enet_host_bandwidth_limit(ENetHost *, enet_uint32, enet_uint32);
|
|
|
+ extern void enet_host_bandwidth_throttle(ENetHost *);
|
|
|
+ extern enet_uint64 enet_host_random_seed(void);
|
|
|
+
|
|
|
+ ENET_API int enet_peer_send(ENetPeer *, enet_uint8, ENetPacket *);
|
|
|
+ ENET_API ENetPacket * enet_peer_receive(ENetPeer *, enet_uint8 * channelID);
|
|
|
+ ENET_API void enet_peer_ping(ENetPeer *);
|
|
|
+ ENET_API void enet_peer_ping_interval(ENetPeer *, enet_uint32);
|
|
|
+ ENET_API void enet_peer_timeout(ENetPeer *, enet_uint32, enet_uint32, enet_uint32);
|
|
|
+ ENET_API void enet_peer_reset(ENetPeer *);
|
|
|
+ ENET_API void enet_peer_disconnect(ENetPeer *, enet_uint32);
|
|
|
+ ENET_API void enet_peer_disconnect_now(ENetPeer *, enet_uint32);
|
|
|
+ ENET_API void enet_peer_disconnect_later(ENetPeer *, enet_uint32);
|
|
|
+ ENET_API void enet_peer_throttle_configure(ENetPeer *, enet_uint32, enet_uint32, enet_uint32);
|
|
|
+ extern int enet_peer_throttle(ENetPeer *, enet_uint32);
|
|
|
+ extern void enet_peer_reset_queues(ENetPeer *);
|
|
|
+ extern void enet_peer_setup_outgoing_command(ENetPeer *, ENetOutgoingCommand *);
|
|
|
+ extern ENetOutgoingCommand * enet_peer_queue_outgoing_command(ENetPeer *, const ENetProtocol *, ENetPacket *, enet_uint32, enet_uint16);
|
|
|
+ extern ENetIncomingCommand * enet_peer_queue_incoming_command(ENetPeer *, const ENetProtocol *, const void *, size_t, enet_uint32, enet_uint32);
|
|
|
+ extern ENetAcknowledgement * enet_peer_queue_acknowledgement(ENetPeer *, const ENetProtocol *, enet_uint16);
|
|
|
+ extern void enet_peer_dispatch_incoming_unreliable_commands(ENetPeer *, ENetChannel *);
|
|
|
+ extern void enet_peer_dispatch_incoming_reliable_commands(ENetPeer *, ENetChannel *);
|
|
|
+ extern void enet_peer_on_connect(ENetPeer *);
|
|
|
+ extern void enet_peer_on_disconnect(ENetPeer *);
|
|
|
+
|
|
|
+ extern size_t enet_protocol_command_size (enet_uint8);
|
|
|
+
|
|
|
+#ifdef __cplusplus
|
|
|
+}
|
|
|
+#endif
|
|
|
+
|
|
|
+#if defined(ENET_IMPLEMENTATION) && !defined(ENET_IMPLEMENTATION_DONE)
|
|
|
+#define ENET_IMPLEMENTATION_DONE 1
|
|
|
+
|
|
|
+#ifdef __cplusplus
|
|
|
+extern "C" {
|
|
|
+#endif
|
|
|
+
|
|
|
+// =======================================================================//
|
|
|
+// !
|
|
|
+// ! Atomics
|
|
|
+// !
|
|
|
+// =======================================================================//
|
|
|
+
|
|
|
+#if defined(_MSC_VER)
|
|
|
+
|
|
|
+ #define ENET_AT_CASSERT_PRED(predicate) sizeof(char[2 * !!(predicate)-1])
|
|
|
+ #define ENET_IS_SUPPORTED_ATOMIC(size) ENET_AT_CASSERT_PRED(size == 1 || size == 2 || size == 4 || size == 8)
|
|
|
+ #define ENET_ATOMIC_SIZEOF(variable) (ENET_IS_SUPPORTED_ATOMIC(sizeof(*(variable))), sizeof(*(variable)))
|
|
|
+
|
|
|
+ __inline int64_t enet_at_atomic_read(char *ptr, size_t size)
|
|
|
+ {
|
|
|
+ switch (size) {
|
|
|
+ case 1:
|
|
|
+ return _InterlockedExchangeAdd8((volatile char *)ptr, 0);
|
|
|
+ case 2:
|
|
|
+ return _InterlockedExchangeAdd16((volatile SHORT *)ptr, 0);
|
|
|
+ case 4:
|
|
|
+ #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE
|
|
|
+ return InterlockedExchangeAdd((volatile LONG *)ptr, 0);
|
|
|
+ #else
|
|
|
+ return _InterlockedExchangeAdd((volatile LONG *)ptr, 0);
|
|
|
+ #endif
|
|
|
+ case 8:
|
|
|
+ #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE
|
|
|
+ return InterlockedExchangeAdd64((volatile LONGLONG *)ptr, 0);
|
|
|
+ #else
|
|
|
+ return _InterlockedExchangeAdd64((volatile LONGLONG *)ptr, 0);
|
|
|
+ #endif
|
|
|
+ default:
|
|
|
+ return 0xbad13bad; /* never reached */
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ __inline int64_t enet_at_atomic_write(char *ptr, int64_t value, size_t size)
|
|
|
+ {
|
|
|
+ switch (size) {
|
|
|
+ case 1:
|
|
|
+ return _InterlockedExchange8((volatile char *)ptr, (char)value);
|
|
|
+ case 2:
|
|
|
+ return _InterlockedExchange16((volatile SHORT *)ptr, (SHORT)value);
|
|
|
+ case 4:
|
|
|
+ #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE
|
|
|
+ return InterlockedExchange((volatile LONG *)ptr, (LONG)value);
|
|
|
+ #else
|
|
|
+ return _InterlockedExchange((volatile LONG *)ptr, (LONG)value);
|
|
|
+ #endif
|
|
|
+ case 8:
|
|
|
+ #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE
|
|
|
+ return InterlockedExchange64((volatile LONGLONG *)ptr, (LONGLONG)value);
|
|
|
+ #else
|
|
|
+ return _InterlockedExchange64((volatile LONGLONG *)ptr, (LONGLONG)value);
|
|
|
+ #endif
|
|
|
+ default:
|
|
|
+ return 0xbad13bad; /* never reached */
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ __inline int64_t enet_at_atomic_cas(char *ptr, int64_t new_val, int64_t old_val, size_t size)
|
|
|
+ {
|
|
|
+ switch (size) {
|
|
|
+ case 1:
|
|
|
+ return _InterlockedCompareExchange8((volatile char *)ptr, (char)new_val, (char)old_val);
|
|
|
+ case 2:
|
|
|
+ return _InterlockedCompareExchange16((volatile SHORT *)ptr, (SHORT)new_val,
|
|
|
+ (SHORT)old_val);
|
|
|
+ case 4:
|
|
|
+ #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE
|
|
|
+ return InterlockedCompareExchange((volatile LONG *)ptr, (LONG)new_val, (LONG)old_val);
|
|
|
+ #else
|
|
|
+ return _InterlockedCompareExchange((volatile LONG *)ptr, (LONG)new_val, (LONG)old_val);
|
|
|
+ #endif
|
|
|
+ case 8:
|
|
|
+ #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE
|
|
|
+ return InterlockedCompareExchange64((volatile LONGLONG *)ptr, (LONGLONG)new_val,
|
|
|
+ (LONGLONG)old_val);
|
|
|
+ #else
|
|
|
+ return _InterlockedCompareExchange64((volatile LONGLONG *)ptr, (LONGLONG)new_val,
|
|
|
+ (LONGLONG)old_val);
|
|
|
+ #endif
|
|
|
+ default:
|
|
|
+ return 0xbad13bad; /* never reached */
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ __inline int64_t enet_at_atomic_inc(char *ptr, int64_t delta, size_t data_size)
|
|
|
+ {
|
|
|
+ switch (data_size) {
|
|
|
+ case 1:
|
|
|
+ return _InterlockedExchangeAdd8((volatile char *)ptr, (char)delta);
|
|
|
+ case 2:
|
|
|
+ return _InterlockedExchangeAdd16((volatile SHORT *)ptr, (SHORT)delta);
|
|
|
+ case 4:
|
|
|
+ #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE
|
|
|
+ return InterlockedExchangeAdd((volatile LONG *)ptr, (LONG)delta);
|
|
|
+ #else
|
|
|
+ return _InterlockedExchangeAdd((volatile LONG *)ptr, (LONG)delta);
|
|
|
+ #endif
|
|
|
+ case 8:
|
|
|
+ #ifdef NOT_UNDERSCORED_INTERLOCKED_EXCHANGE
|
|
|
+ return InterlockedExchangeAdd64((volatile LONGLONG *)ptr, (LONGLONG)delta);
|
|
|
+ #else
|
|
|
+ return _InterlockedExchangeAdd64((volatile LONGLONG *)ptr, (LONGLONG)delta);
|
|
|
+ #endif
|
|
|
+ default:
|
|
|
+ return 0xbad13bad; /* never reached */
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ #define ENET_ATOMIC_READ(variable) enet_at_atomic_read((char *)(variable), ENET_ATOMIC_SIZEOF(variable))
|
|
|
+ #define ENET_ATOMIC_WRITE(variable, new_val) \
|
|
|
+ enet_at_atomic_write((char *)(variable), (int64_t)(new_val), ENET_ATOMIC_SIZEOF(variable))
|
|
|
+ #define ENET_ATOMIC_CAS(variable, old_value, new_val) \
|
|
|
+ enet_at_atomic_cas((char *)(variable), (int64_t)(new_val), (int64_t)(old_value), \
|
|
|
+ ENET_ATOMIC_SIZEOF(variable))
|
|
|
+ #define ENET_ATOMIC_INC(variable) enet_at_atomic_inc((char *)(variable), 1, ENET_ATOMIC_SIZEOF(variable))
|
|
|
+ #define ENET_ATOMIC_DEC(variable) enet_at_atomic_inc((char *)(variable), -1, ENET_ATOMIC_SIZEOF(variable))
|
|
|
+ #define ENET_ATOMIC_INC_BY(variable, delta) \
|
|
|
+ enet_at_atomic_inc((char *)(variable), (delta), ENET_ATOMIC_SIZEOF(variable))
|
|
|
+ #define ENET_ATOMIC_DEC_BY(variable, delta) \
|
|
|
+ enet_at_atomic_inc((char *)(variable), -(delta), ENET_ATOMIC_SIZEOF(variable))
|
|
|
+
|
|
|
+#elif defined(__GNUC__) || defined(__clang__)
|
|
|
+
|
|
|
+ #if defined(__clang__) || (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7))
|
|
|
+ #define AT_HAVE_ATOMICS
|
|
|
+ #endif
|
|
|
+
|
|
|
+ /* We want to use __atomic built-ins if possible because the __sync primitives are
|
|
|
+ deprecated, because the __atomic build-ins allow us to use ENET_ATOMIC_WRITE on
|
|
|
+ uninitialized memory without running into undefined behavior, and because the
|
|
|
+ __atomic versions generate more efficient code since we don't need to rely on
|
|
|
+ CAS when we don't actually want it.
|
|
|
+ Note that we use acquire-release memory order (like mutexes do). We could use
|
|
|
+ sequentially consistent memory order but that has lower performance and is
|
|
|
+ almost always unneeded. */
|
|
|
+ #ifdef AT_HAVE_ATOMICS
|
|
|
+ #define ENET_ATOMIC_READ(ptr) __atomic_load_n((ptr), __ATOMIC_ACQUIRE)
|
|
|
+ #define ENET_ATOMIC_WRITE(ptr, value) __atomic_store_n((ptr), (value), __ATOMIC_RELEASE)
|
|
|
+
|
|
|
+ #ifndef typeof
|
|
|
+ #define typeof __typeof__
|
|
|
+ #endif
|
|
|
+
|
|
|
+ /* clang_analyzer doesn't know that CAS writes to memory so it complains about
|
|
|
+ potentially lost data. Replace the code with the equivalent non-sync code. */
|
|
|
+ #ifdef __clang_analyzer__
|
|
|
+
|
|
|
+ #define ENET_ATOMIC_CAS(ptr, old_value, new_value) \
|
|
|
+ ({ \
|
|
|
+ typeof(*(ptr)) ENET_ATOMIC_CAS_old_actual_ = (*(ptr)); \
|
|
|
+ if (ATOMIC_CAS_old_actual_ == (old_value)) { \
|
|
|
+ *(ptr) = new_value; \
|
|
|
+ } \
|
|
|
+ ENET_ATOMIC_CAS_old_actual_; \
|
|
|
+ })
|
|
|
+
|
|
|
+ #else
|
|
|
+
|
|
|
+ /* Could use __auto_type instead of typeof but that shouldn't work in C++.
|
|
|
+ The ({ }) syntax is a GCC extension called statement expression. It lets
|
|
|
+ us return a value out of the macro.
|
|
|
+ TODO We should return bool here instead of the old value to avoid the ABA
|
|
|
+ problem. */
|
|
|
+ #define ENET_ATOMIC_CAS(ptr, old_value, new_value) \
|
|
|
+ ({ \
|
|
|
+ typeof(*(ptr)) ENET_ATOMIC_CAS_expected_ = (old_value); \
|
|
|
+ __atomic_compare_exchange_n((ptr), &ENET_ATOMIC_CAS_expected_, (new_value), false, \
|
|
|
+ __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE); \
|
|
|
+ ENET_ATOMIC_CAS_expected_; \
|
|
|
+ })
|
|
|
+
|
|
|
+ #endif /* __clang_analyzer__ */
|
|
|
+
|
|
|
+ #define ENET_ATOMIC_INC(ptr) __atomic_fetch_add((ptr), 1, __ATOMIC_ACQ_REL)
|
|
|
+ #define ENET_ATOMIC_DEC(ptr) __atomic_fetch_sub((ptr), 1, __ATOMIC_ACQ_REL)
|
|
|
+ #define ENET_ATOMIC_INC_BY(ptr, delta) __atomic_fetch_add((ptr), (delta), __ATOMIC_ACQ_REL)
|
|
|
+ #define ENET_ATOMIC_DEC_BY(ptr, delta) __atomic_fetch_sub((ptr), (delta), __ATOMIC_ACQ_REL)
|
|
|
+
|
|
|
+ #else
|
|
|
+
|
|
|
+ #define ENET_ATOMIC_READ(variable) __sync_fetch_and_add(variable, 0)
|
|
|
+ #define ENET_ATOMIC_WRITE(variable, new_val) \
|
|
|
+ (void) __sync_val_compare_and_swap((variable), *(variable), (new_val))
|
|
|
+ #define ENET_ATOMIC_CAS(variable, old_value, new_val) \
|
|
|
+ __sync_val_compare_and_swap((variable), (old_value), (new_val))
|
|
|
+ #define ENET_ATOMIC_INC(variable) __sync_fetch_and_add((variable), 1)
|
|
|
+ #define ENET_ATOMIC_DEC(variable) __sync_fetch_and_sub((variable), 1)
|
|
|
+ #define ENET_ATOMIC_INC_BY(variable, delta) __sync_fetch_and_add((variable), (delta), 1)
|
|
|
+ #define ENET_ATOMIC_DEC_BY(variable, delta) __sync_fetch_and_sub((variable), (delta), 1)
|
|
|
+
|
|
|
+ #endif /* AT_HAVE_ATOMICS */
|
|
|
+
|
|
|
+ #undef AT_HAVE_ATOMICS
|
|
|
+
|
|
|
+#endif /* defined(_MSC_VER) */
|
|
|
+
|
|
|
+
|
|
|
+// =======================================================================//
|
|
|
+// !
|
|
|
+// ! Callbacks
|
|
|
+// !
|
|
|
+// =======================================================================//
|
|
|
+
|
|
|
+ static ENetCallbacks callbacks = { malloc, free, abort };
|
|
|
+
|
|
|
+ int enet_initialize_with_callbacks(ENetVersion version, const ENetCallbacks *inits) {
|
|
|
+ if (version < ENET_VERSION_CREATE(1, 3, 0)) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (inits->malloc != NULL || inits->free != NULL) {
|
|
|
+ if (inits->malloc == NULL || inits->free == NULL) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ callbacks.malloc = inits->malloc;
|
|
|
+ callbacks.free = inits->free;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (inits->no_memory != NULL) {
|
|
|
+ callbacks.no_memory = inits->no_memory;
|
|
|
+ }
|
|
|
+
|
|
|
+ return enet_initialize();
|
|
|
+ }
|
|
|
+
|
|
|
+ ENetVersion enet_linked_version(void) {
|
|
|
+ return ENET_VERSION;
|
|
|
+ }
|
|
|
+
|
|
|
+ void * enet_malloc(size_t size) {
|
|
|
+ void *memory = callbacks.malloc(size);
|
|
|
+
|
|
|
+ if (memory == NULL) {
|
|
|
+ callbacks.no_memory();
|
|
|
+ }
|
|
|
+
|
|
|
+ return memory;
|
|
|
+ }
|
|
|
+
|
|
|
+ void enet_free(void *memory) {
|
|
|
+ callbacks.free(memory);
|
|
|
+ }
|
|
|
+
|
|
|
+// =======================================================================//
|
|
|
+// !
|
|
|
+// ! List
|
|
|
+// !
|
|
|
+// =======================================================================//
|
|
|
+
|
|
|
+ void enet_list_clear(ENetList *list) {
|
|
|
+ list->sentinel.next = &list->sentinel;
|
|
|
+ list->sentinel.previous = &list->sentinel;
|
|
|
+ }
|
|
|
+
|
|
|
+ ENetListIterator enet_list_insert(ENetListIterator position, void *data) {
|
|
|
+ ENetListIterator result = (ENetListIterator)data;
|
|
|
+
|
|
|
+ result->previous = position->previous;
|
|
|
+ result->next = position;
|
|
|
+
|
|
|
+ result->previous->next = result;
|
|
|
+ position->previous = result;
|
|
|
+
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ void *enet_list_remove(ENetListIterator position) {
|
|
|
+ position->previous->next = position->next;
|
|
|
+ position->next->previous = position->previous;
|
|
|
+
|
|
|
+ return position;
|
|
|
+ }
|
|
|
+
|
|
|
+ ENetListIterator enet_list_move(ENetListIterator position, void *dataFirst, void *dataLast) {
|
|
|
+ ENetListIterator first = (ENetListIterator)dataFirst;
|
|
|
+ ENetListIterator last = (ENetListIterator)dataLast;
|
|
|
+
|
|
|
+ first->previous->next = last->next;
|
|
|
+ last->next->previous = first->previous;
|
|
|
+
|
|
|
+ first->previous = position->previous;
|
|
|
+ last->next = position;
|
|
|
+
|
|
|
+ first->previous->next = first;
|
|
|
+ position->previous = last;
|
|
|
+
|
|
|
+ return first;
|
|
|
+ }
|
|
|
+
|
|
|
+ size_t enet_list_size(ENetList *list) {
|
|
|
+ size_t size = 0;
|
|
|
+ ENetListIterator position;
|
|
|
+
|
|
|
+ for (position = enet_list_begin(list); position != enet_list_end(list); position = enet_list_next(position)) {
|
|
|
+ ++size;
|
|
|
+ }
|
|
|
+
|
|
|
+ return size;
|
|
|
+ }
|
|
|
+
|
|
|
+// =======================================================================//
|
|
|
+// !
|
|
|
+// ! Packet
|
|
|
+// !
|
|
|
+// =======================================================================//
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Creates a packet that may be sent to a peer.
|
|
|
+ * @param data initial contents of the packet's data; the packet's data will remain uninitialized if data is NULL.
|
|
|
+ * @param dataLength size of the data allocated for this packet
|
|
|
+ * @param flags flags for this packet as described for the ENetPacket structure.
|
|
|
+ * @returns the packet on success, NULL on failure
|
|
|
+ */
|
|
|
+ ENetPacket *enet_packet_create(const void *data, size_t dataLength, enet_uint32 flags) {
|
|
|
+ ENetPacket *packet;
|
|
|
+ if (flags & ENET_PACKET_FLAG_NO_ALLOCATE) {
|
|
|
+ packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket));
|
|
|
+ if (packet == NULL) {
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+
|
|
|
+ packet->data = (enet_uint8 *)data;
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket) + dataLength);
|
|
|
+ if (packet == NULL) {
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+
|
|
|
+ packet->data = (enet_uint8 *)packet + sizeof(ENetPacket);
|
|
|
+
|
|
|
+ if (data != NULL) {
|
|
|
+ memcpy(packet->data, data, dataLength);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ packet->referenceCount = 0;
|
|
|
+ packet->flags = flags;
|
|
|
+ packet->dataLength = dataLength;
|
|
|
+ packet->freeCallback = NULL;
|
|
|
+ packet->userData = NULL;
|
|
|
+
|
|
|
+ return packet;
|
|
|
+ }
|
|
|
+
|
|
|
+ ENetPacket *enet_packet_create_offset(const void *data, size_t dataLength, size_t dataOffset, enet_uint32 flags) {
|
|
|
+ ENetPacket *packet;
|
|
|
+ if (flags & ENET_PACKET_FLAG_NO_ALLOCATE) {
|
|
|
+ packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket));
|
|
|
+ if (packet == NULL) {
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+
|
|
|
+ packet->data = (enet_uint8 *)data;
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ packet = (ENetPacket *)enet_malloc(sizeof (ENetPacket) + dataLength + dataOffset);
|
|
|
+ if (packet == NULL) {
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+
|
|
|
+ packet->data = (enet_uint8 *)packet + sizeof(ENetPacket);
|
|
|
+
|
|
|
+ if (data != NULL) {
|
|
|
+ memcpy(packet->data + dataOffset, data, dataLength);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ packet->referenceCount = 0;
|
|
|
+ packet->flags = flags;
|
|
|
+ packet->dataLength = dataLength + dataOffset;
|
|
|
+ packet->freeCallback = NULL;
|
|
|
+ packet->userData = NULL;
|
|
|
+
|
|
|
+ return packet;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Destroys the packet and deallocates its data.
|
|
|
+ * @param packet packet to be destroyed
|
|
|
+ */
|
|
|
+ void enet_packet_destroy(ENetPacket *packet) {
|
|
|
+ if (packet == NULL) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (packet->freeCallback != NULL) {
|
|
|
+ (*packet->freeCallback)((void *)packet);
|
|
|
+ }
|
|
|
+
|
|
|
+ enet_free(packet);
|
|
|
+ }
|
|
|
+
|
|
|
+ static int initializedCRC32 = 0;
|
|
|
+ static enet_uint32 crcTable[256];
|
|
|
+
|
|
|
+ static enet_uint32 reflect_crc(int val, int bits) {
|
|
|
+ int result = 0, bit;
|
|
|
+
|
|
|
+ for (bit = 0; bit < bits; bit++) {
|
|
|
+ if (val & 1) { result |= 1 << (bits - 1 - bit); }
|
|
|
+ val >>= 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ static void initialize_crc32(void) {
|
|
|
+ int byte;
|
|
|
+
|
|
|
+ for (byte = 0; byte < 256; ++byte) {
|
|
|
+ enet_uint32 crc = reflect_crc(byte, 8) << 24;
|
|
|
+ int offset;
|
|
|
+
|
|
|
+ for (offset = 0; offset < 8; ++offset) {
|
|
|
+ if (crc & 0x80000000) {
|
|
|
+ crc = (crc << 1) ^ 0x04c11db7;
|
|
|
+ } else {
|
|
|
+ crc <<= 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ crcTable[byte] = reflect_crc(crc, 32);
|
|
|
+ }
|
|
|
+
|
|
|
+ initializedCRC32 = 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ enet_uint32 enet_crc32(const ENetBuffer *buffers, size_t bufferCount) {
|
|
|
+ enet_uint32 crc = 0xFFFFFFFF;
|
|
|
+
|
|
|
+ if (!initializedCRC32) { initialize_crc32(); }
|
|
|
+
|
|
|
+ while (bufferCount-- > 0) {
|
|
|
+ const enet_uint8 *data = (const enet_uint8 *)buffers->data;
|
|
|
+ const enet_uint8 *dataEnd = &data[buffers->dataLength];
|
|
|
+
|
|
|
+ while (data < dataEnd) {
|
|
|
+ crc = (crc >> 8) ^ crcTable[(crc & 0xFF) ^ *data++];
|
|
|
+ }
|
|
|
+
|
|
|
+ ++buffers;
|
|
|
+ }
|
|
|
+
|
|
|
+ return ENET_HOST_TO_NET_32(~crc);
|
|
|
+ }
|
|
|
+
|
|
|
+// =======================================================================//
|
|
|
+// !
|
|
|
+// ! Protocol
|
|
|
+// !
|
|
|
+// =======================================================================//
|
|
|
+
|
|
|
+ static size_t commandSizes[ENET_PROTOCOL_COMMAND_COUNT] = {
|
|
|
+ 0,
|
|
|
+ sizeof(ENetProtocolAcknowledge),
|
|
|
+ sizeof(ENetProtocolConnect),
|
|
|
+ sizeof(ENetProtocolVerifyConnect),
|
|
|
+ sizeof(ENetProtocolDisconnect),
|
|
|
+ sizeof(ENetProtocolPing),
|
|
|
+ sizeof(ENetProtocolSendReliable),
|
|
|
+ sizeof(ENetProtocolSendUnreliable),
|
|
|
+ sizeof(ENetProtocolSendFragment),
|
|
|
+ sizeof(ENetProtocolSendUnsequenced),
|
|
|
+ sizeof(ENetProtocolBandwidthLimit),
|
|
|
+ sizeof(ENetProtocolThrottleConfigure),
|
|
|
+ sizeof(ENetProtocolSendFragment)
|
|
|
+ };
|
|
|
+
|
|
|
+ size_t enet_protocol_command_size(enet_uint8 commandNumber) {
|
|
|
+ return commandSizes[commandNumber & ENET_PROTOCOL_COMMAND_MASK];
|
|
|
+ }
|
|
|
+
|
|
|
+ static void enet_protocol_change_state(ENetHost *host, ENetPeer *peer, ENetPeerState state) {
|
|
|
+ ENET_UNUSED(host)
|
|
|
+
|
|
|
+ if (state == ENET_PEER_STATE_CONNECTED || state == ENET_PEER_STATE_DISCONNECT_LATER) {
|
|
|
+ enet_peer_on_connect(peer);
|
|
|
+ } else {
|
|
|
+ enet_peer_on_disconnect(peer);
|
|
|
+ }
|
|
|
+
|
|
|
+ peer->state = state;
|
|
|
+ }
|
|
|
+
|
|
|
+ static void enet_protocol_dispatch_state(ENetHost *host, ENetPeer *peer, ENetPeerState state) {
|
|
|
+ enet_protocol_change_state(host, peer, state);
|
|
|
+
|
|
|
+ if (!peer->needsDispatch) {
|
|
|
+ enet_list_insert(enet_list_end(&host->dispatchQueue), &peer->dispatchList);
|
|
|
+ peer->needsDispatch = 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ static int enet_protocol_dispatch_incoming_commands(ENetHost *host, ENetEvent *event) {
|
|
|
+ while (!enet_list_empty(&host->dispatchQueue)) {
|
|
|
+ ENetPeer *peer = (ENetPeer *) enet_list_remove(enet_list_begin(&host->dispatchQueue));
|
|
|
+ peer->needsDispatch = 0;
|
|
|
+
|
|
|
+ switch (peer->state) {
|
|
|
+ case ENET_PEER_STATE_CONNECTION_PENDING:
|
|
|
+ case ENET_PEER_STATE_CONNECTION_SUCCEEDED:
|
|
|
+ enet_protocol_change_state(host, peer, ENET_PEER_STATE_CONNECTED);
|
|
|
+
|
|
|
+ event->type = ENET_EVENT_TYPE_CONNECT;
|
|
|
+ event->peer = peer;
|
|
|
+ event->data = peer->eventData;
|
|
|
+
|
|
|
+ return 1;
|
|
|
+
|
|
|
+ case ENET_PEER_STATE_ZOMBIE:
|
|
|
+ host->recalculateBandwidthLimits = 1;
|
|
|
+
|
|
|
+ event->type = ENET_EVENT_TYPE_DISCONNECT;
|
|
|
+ event->peer = peer;
|
|
|
+ event->data = peer->eventData;
|
|
|
+
|
|
|
+ enet_peer_reset(peer);
|
|
|
+
|
|
|
+ return 1;
|
|
|
+
|
|
|
+ case ENET_PEER_STATE_CONNECTED:
|
|
|
+ if (enet_list_empty(&peer->dispatchedCommands)) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ event->packet = enet_peer_receive(peer, &event->channelID);
|
|
|
+ if (event->packet == NULL) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ event->type = ENET_EVENT_TYPE_RECEIVE;
|
|
|
+ event->peer = peer;
|
|
|
+
|
|
|
+ if (!enet_list_empty(&peer->dispatchedCommands)) {
|
|
|
+ peer->needsDispatch = 1;
|
|
|
+ enet_list_insert(enet_list_end(&host->dispatchQueue), &peer->dispatchList);
|
|
|
+ }
|
|
|
+
|
|
|
+ return 1;
|
|
|
+
|
|
|
+ default:
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ } /* enet_protocol_dispatch_incoming_commands */
|
|
|
+
|
|
|
+ static void enet_protocol_notify_connect(ENetHost *host, ENetPeer *peer, ENetEvent *event) {
|
|
|
+ host->recalculateBandwidthLimits = 1;
|
|
|
+
|
|
|
+ if (event != NULL) {
|
|
|
+ enet_protocol_change_state(host, peer, ENET_PEER_STATE_CONNECTED);
|
|
|
+
|
|
|
+ peer->totalDataSent = 0;
|
|
|
+ peer->totalDataReceived = 0;
|
|
|
+ peer->totalPacketsSent = 0;
|
|
|
+ peer->totalPacketsLost = 0;
|
|
|
+
|
|
|
+ event->type = ENET_EVENT_TYPE_CONNECT;
|
|
|
+ event->peer = peer;
|
|
|
+ event->data = peer->eventData;
|
|
|
+ } else {
|
|
|
+ enet_protocol_dispatch_state(host, peer, peer->state == ENET_PEER_STATE_CONNECTING ? ENET_PEER_STATE_CONNECTION_SUCCEEDED : ENET_PEER_STATE_CONNECTION_PENDING);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ static void enet_protocol_notify_disconnect(ENetHost *host, ENetPeer *peer, ENetEvent *event) {
|
|
|
+ if (peer->state >= ENET_PEER_STATE_CONNECTION_PENDING) {
|
|
|
+ host->recalculateBandwidthLimits = 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer->state != ENET_PEER_STATE_CONNECTING && peer->state < ENET_PEER_STATE_CONNECTION_SUCCEEDED) {
|
|
|
+ enet_peer_reset(peer);
|
|
|
+ } else if (event != NULL) {
|
|
|
+ event->type = ENET_EVENT_TYPE_DISCONNECT;
|
|
|
+ event->peer = peer;
|
|
|
+ event->data = 0;
|
|
|
+
|
|
|
+ enet_peer_reset(peer);
|
|
|
+ } else {
|
|
|
+ peer->eventData = 0;
|
|
|
+ enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ static void enet_protocol_notify_disconnect_timeout (ENetHost * host, ENetPeer * peer, ENetEvent * event) {
|
|
|
+ if (peer->state >= ENET_PEER_STATE_CONNECTION_PENDING) {
|
|
|
+ host->recalculateBandwidthLimits = 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer->state != ENET_PEER_STATE_CONNECTING && peer->state < ENET_PEER_STATE_CONNECTION_SUCCEEDED) {
|
|
|
+ enet_peer_reset (peer);
|
|
|
+ }
|
|
|
+ else if (event != NULL) {
|
|
|
+ event->type = ENET_EVENT_TYPE_DISCONNECT_TIMEOUT;
|
|
|
+ event->peer = peer;
|
|
|
+ event->data = 0;
|
|
|
+
|
|
|
+ enet_peer_reset(peer);
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ peer->eventData = 0;
|
|
|
+ enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ static void enet_protocol_remove_sent_unreliable_commands(ENetPeer *peer) {
|
|
|
+ ENetOutgoingCommand *outgoingCommand;
|
|
|
+
|
|
|
+ while (!enet_list_empty(&peer->sentUnreliableCommands)) {
|
|
|
+ outgoingCommand = (ENetOutgoingCommand *) enet_list_front(&peer->sentUnreliableCommands);
|
|
|
+ enet_list_remove(&outgoingCommand->outgoingCommandList);
|
|
|
+
|
|
|
+ if (outgoingCommand->packet != NULL) {
|
|
|
+ --outgoingCommand->packet->referenceCount;
|
|
|
+
|
|
|
+ if (outgoingCommand->packet->referenceCount == 0) {
|
|
|
+ outgoingCommand->packet->flags |= ENET_PACKET_FLAG_SENT;
|
|
|
+ enet_packet_destroy(outgoingCommand->packet);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ enet_free(outgoingCommand);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ static ENetProtocolCommand enet_protocol_remove_sent_reliable_command(ENetPeer *peer, enet_uint16 reliableSequenceNumber, enet_uint8 channelID) {
|
|
|
+ ENetOutgoingCommand *outgoingCommand = NULL;
|
|
|
+ ENetListIterator currentCommand;
|
|
|
+ ENetProtocolCommand commandNumber;
|
|
|
+ int wasSent = 1;
|
|
|
+
|
|
|
+ for (currentCommand = enet_list_begin(&peer->sentReliableCommands);
|
|
|
+ currentCommand != enet_list_end(&peer->sentReliableCommands);
|
|
|
+ currentCommand = enet_list_next(currentCommand)
|
|
|
+ ) {
|
|
|
+ outgoingCommand = (ENetOutgoingCommand *) currentCommand;
|
|
|
+
|
|
|
+ if (outgoingCommand->reliableSequenceNumber == reliableSequenceNumber && outgoingCommand->command.header.channelID == channelID) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (currentCommand == enet_list_end(&peer->sentReliableCommands)) {
|
|
|
+ for (currentCommand = enet_list_begin(&peer->outgoingReliableCommands);
|
|
|
+ currentCommand != enet_list_end(&peer->outgoingReliableCommands);
|
|
|
+ currentCommand = enet_list_next(currentCommand)
|
|
|
+ ) {
|
|
|
+ outgoingCommand = (ENetOutgoingCommand *) currentCommand;
|
|
|
+
|
|
|
+ if (outgoingCommand->sendAttempts < 1) { return ENET_PROTOCOL_COMMAND_NONE; }
|
|
|
+ if (outgoingCommand->reliableSequenceNumber == reliableSequenceNumber && outgoingCommand->command.header.channelID == channelID) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (currentCommand == enet_list_end(&peer->outgoingReliableCommands)) {
|
|
|
+ return ENET_PROTOCOL_COMMAND_NONE;
|
|
|
+ }
|
|
|
+
|
|
|
+ wasSent = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (outgoingCommand == NULL) {
|
|
|
+ return ENET_PROTOCOL_COMMAND_NONE;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (channelID < peer->channelCount) {
|
|
|
+ ENetChannel *channel = &peer->channels[channelID];
|
|
|
+ enet_uint16 reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE;
|
|
|
+ if (channel->reliableWindows[reliableWindow] > 0) {
|
|
|
+ --channel->reliableWindows[reliableWindow];
|
|
|
+ if (!channel->reliableWindows[reliableWindow]) {
|
|
|
+ channel->usedReliableWindows &= ~(1 << reliableWindow);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ commandNumber = (ENetProtocolCommand) (outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK);
|
|
|
+ enet_list_remove(&outgoingCommand->outgoingCommandList);
|
|
|
+
|
|
|
+ if (outgoingCommand->packet != NULL) {
|
|
|
+ if (wasSent) {
|
|
|
+ peer->reliableDataInTransit -= outgoingCommand->fragmentLength;
|
|
|
+ }
|
|
|
+
|
|
|
+ --outgoingCommand->packet->referenceCount;
|
|
|
+
|
|
|
+ if (outgoingCommand->packet->referenceCount == 0) {
|
|
|
+ outgoingCommand->packet->flags |= ENET_PACKET_FLAG_SENT;
|
|
|
+ enet_packet_destroy(outgoingCommand->packet);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ enet_free(outgoingCommand);
|
|
|
+
|
|
|
+ if (enet_list_empty(&peer->sentReliableCommands)) {
|
|
|
+ return commandNumber;
|
|
|
+ }
|
|
|
+
|
|
|
+ outgoingCommand = (ENetOutgoingCommand *) enet_list_front(&peer->sentReliableCommands);
|
|
|
+ peer->nextTimeout = outgoingCommand->sentTime + outgoingCommand->roundTripTimeout;
|
|
|
+
|
|
|
+ return commandNumber;
|
|
|
+ } /* enet_protocol_remove_sent_reliable_command */
|
|
|
+
|
|
|
+ static ENetPeer * enet_protocol_handle_connect(ENetHost *host, ENetProtocolHeader *header, ENetProtocol *command) {
|
|
|
+ ENET_UNUSED(header)
|
|
|
+
|
|
|
+ enet_uint8 incomingSessionID, outgoingSessionID;
|
|
|
+ enet_uint32 mtu, windowSize;
|
|
|
+ ENetChannel *channel;
|
|
|
+ size_t channelCount, duplicatePeers = 0;
|
|
|
+ ENetPeer *currentPeer, *peer = NULL;
|
|
|
+ ENetProtocol verifyCommand;
|
|
|
+
|
|
|
+ channelCount = ENET_NET_TO_HOST_32(command->connect.channelCount);
|
|
|
+
|
|
|
+ if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT || channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) {
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (currentPeer = host->peers; currentPeer < &host->peers[host->peerCount]; ++currentPeer) {
|
|
|
+ if (currentPeer->state == ENET_PEER_STATE_DISCONNECTED) {
|
|
|
+ if (peer == NULL) {
|
|
|
+ peer = currentPeer;
|
|
|
+ }
|
|
|
+ } else if (currentPeer->state != ENET_PEER_STATE_CONNECTING && in6_equal(currentPeer->address.host, host->receivedAddress.host)) {
|
|
|
+ if (currentPeer->address.port == host->receivedAddress.port && currentPeer->connectID == command->connect.connectID) {
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+
|
|
|
+ ++duplicatePeers;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer == NULL || duplicatePeers >= host->duplicatePeers) {
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (channelCount > host->channelLimit) {
|
|
|
+ channelCount = host->channelLimit;
|
|
|
+ }
|
|
|
+ peer->channels = (ENetChannel *) enet_malloc(channelCount * sizeof(ENetChannel));
|
|
|
+ if (peer->channels == NULL) {
|
|
|
+ return NULL;
|
|
|
+ }
|
|
|
+ peer->channelCount = channelCount;
|
|
|
+ peer->state = ENET_PEER_STATE_ACKNOWLEDGING_CONNECT;
|
|
|
+ peer->connectID = command->connect.connectID;
|
|
|
+ peer->address = host->receivedAddress;
|
|
|
+ peer->outgoingPeerID = ENET_NET_TO_HOST_16(command->connect.outgoingPeerID);
|
|
|
+ peer->incomingBandwidth = ENET_NET_TO_HOST_32(command->connect.incomingBandwidth);
|
|
|
+ peer->outgoingBandwidth = ENET_NET_TO_HOST_32(command->connect.outgoingBandwidth);
|
|
|
+ peer->packetThrottleInterval = ENET_NET_TO_HOST_32(command->connect.packetThrottleInterval);
|
|
|
+ peer->packetThrottleAcceleration = ENET_NET_TO_HOST_32(command->connect.packetThrottleAcceleration);
|
|
|
+ peer->packetThrottleDeceleration = ENET_NET_TO_HOST_32(command->connect.packetThrottleDeceleration);
|
|
|
+ peer->eventData = ENET_NET_TO_HOST_32(command->connect.data);
|
|
|
+
|
|
|
+ incomingSessionID = command->connect.incomingSessionID == 0xFF ? peer->outgoingSessionID : command->connect.incomingSessionID;
|
|
|
+ incomingSessionID = (incomingSessionID + 1) & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT);
|
|
|
+ if (incomingSessionID == peer->outgoingSessionID) {
|
|
|
+ incomingSessionID = (incomingSessionID + 1)
|
|
|
+ & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT);
|
|
|
+ }
|
|
|
+ peer->outgoingSessionID = incomingSessionID;
|
|
|
+
|
|
|
+ outgoingSessionID = command->connect.outgoingSessionID == 0xFF ? peer->incomingSessionID : command->connect.outgoingSessionID;
|
|
|
+ outgoingSessionID = (outgoingSessionID + 1) & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT);
|
|
|
+ if (outgoingSessionID == peer->incomingSessionID) {
|
|
|
+ outgoingSessionID = (outgoingSessionID + 1)
|
|
|
+ & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT);
|
|
|
+ }
|
|
|
+ peer->incomingSessionID = outgoingSessionID;
|
|
|
+
|
|
|
+ for (channel = peer->channels; channel < &peer->channels[channelCount]; ++channel) {
|
|
|
+ channel->outgoingReliableSequenceNumber = 0;
|
|
|
+ channel->outgoingUnreliableSequenceNumber = 0;
|
|
|
+ channel->incomingReliableSequenceNumber = 0;
|
|
|
+ channel->incomingUnreliableSequenceNumber = 0;
|
|
|
+
|
|
|
+ enet_list_clear(&channel->incomingReliableCommands);
|
|
|
+ enet_list_clear(&channel->incomingUnreliableCommands);
|
|
|
+
|
|
|
+ channel->usedReliableWindows = 0;
|
|
|
+ memset(channel->reliableWindows, 0, sizeof(channel->reliableWindows));
|
|
|
+ }
|
|
|
+
|
|
|
+ mtu = ENET_NET_TO_HOST_32(command->connect.mtu);
|
|
|
+
|
|
|
+ if (mtu < ENET_PROTOCOL_MINIMUM_MTU) {
|
|
|
+ mtu = ENET_PROTOCOL_MINIMUM_MTU;
|
|
|
+ } else if (mtu > ENET_PROTOCOL_MAXIMUM_MTU) {
|
|
|
+ mtu = ENET_PROTOCOL_MAXIMUM_MTU;
|
|
|
+ }
|
|
|
+
|
|
|
+ peer->mtu = mtu;
|
|
|
+
|
|
|
+ if (host->outgoingBandwidth == 0 && peer->incomingBandwidth == 0) {
|
|
|
+ peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE;
|
|
|
+ } else if (host->outgoingBandwidth == 0 || peer->incomingBandwidth == 0) {
|
|
|
+ peer->windowSize = (ENET_MAX(host->outgoingBandwidth, peer->incomingBandwidth) / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE;
|
|
|
+ } else {
|
|
|
+ peer->windowSize = (ENET_MIN(host->outgoingBandwidth, peer->incomingBandwidth) / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer->windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) {
|
|
|
+ peer->windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE;
|
|
|
+ } else if (peer->windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) {
|
|
|
+ peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (host->incomingBandwidth == 0) {
|
|
|
+ windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE;
|
|
|
+ } else {
|
|
|
+ windowSize = (host->incomingBandwidth / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (windowSize > ENET_NET_TO_HOST_32(command->connect.windowSize)) {
|
|
|
+ windowSize = ENET_NET_TO_HOST_32(command->connect.windowSize);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) {
|
|
|
+ windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE;
|
|
|
+ } else if (windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) {
|
|
|
+ windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE;
|
|
|
+ }
|
|
|
+
|
|
|
+ verifyCommand.header.command = ENET_PROTOCOL_COMMAND_VERIFY_CONNECT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE;
|
|
|
+ verifyCommand.header.channelID = 0xFF;
|
|
|
+ verifyCommand.verifyConnect.outgoingPeerID = ENET_HOST_TO_NET_16(peer->incomingPeerID);
|
|
|
+ verifyCommand.verifyConnect.incomingSessionID = incomingSessionID;
|
|
|
+ verifyCommand.verifyConnect.outgoingSessionID = outgoingSessionID;
|
|
|
+ verifyCommand.verifyConnect.mtu = ENET_HOST_TO_NET_32(peer->mtu);
|
|
|
+ verifyCommand.verifyConnect.windowSize = ENET_HOST_TO_NET_32(windowSize);
|
|
|
+ verifyCommand.verifyConnect.channelCount = ENET_HOST_TO_NET_32(channelCount);
|
|
|
+ verifyCommand.verifyConnect.incomingBandwidth = ENET_HOST_TO_NET_32(host->incomingBandwidth);
|
|
|
+ verifyCommand.verifyConnect.outgoingBandwidth = ENET_HOST_TO_NET_32(host->outgoingBandwidth);
|
|
|
+ verifyCommand.verifyConnect.packetThrottleInterval = ENET_HOST_TO_NET_32(peer->packetThrottleInterval);
|
|
|
+ verifyCommand.verifyConnect.packetThrottleAcceleration = ENET_HOST_TO_NET_32(peer->packetThrottleAcceleration);
|
|
|
+ verifyCommand.verifyConnect.packetThrottleDeceleration = ENET_HOST_TO_NET_32(peer->packetThrottleDeceleration);
|
|
|
+ verifyCommand.verifyConnect.connectID = peer->connectID;
|
|
|
+
|
|
|
+ enet_peer_queue_outgoing_command(peer, &verifyCommand, NULL, 0, 0);
|
|
|
+ return peer;
|
|
|
+ } /* enet_protocol_handle_connect */
|
|
|
+
|
|
|
+ static int enet_protocol_handle_send_reliable(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) {
|
|
|
+ size_t dataLength;
|
|
|
+
|
|
|
+ if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ dataLength = ENET_NET_TO_HOST_16(command->sendReliable.dataLength);
|
|
|
+ *currentData += dataLength;
|
|
|
+
|
|
|
+ if (dataLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (enet_peer_queue_incoming_command(peer, command, (const enet_uint8 *) command + sizeof(ENetProtocolSendReliable), dataLength, ENET_PACKET_FLAG_RELIABLE, 0) == NULL) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ static int enet_protocol_handle_send_unsequenced(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) {
|
|
|
+ enet_uint32 unsequencedGroup, index;
|
|
|
+ size_t dataLength;
|
|
|
+
|
|
|
+ if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ dataLength = ENET_NET_TO_HOST_16(command->sendUnsequenced.dataLength);
|
|
|
+ *currentData += dataLength;
|
|
|
+ if (dataLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ unsequencedGroup = ENET_NET_TO_HOST_16(command->sendUnsequenced.unsequencedGroup);
|
|
|
+ index = unsequencedGroup % ENET_PEER_UNSEQUENCED_WINDOW_SIZE;
|
|
|
+
|
|
|
+ if (unsequencedGroup < peer->incomingUnsequencedGroup) {
|
|
|
+ unsequencedGroup += 0x10000;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (unsequencedGroup >= (enet_uint32) peer->incomingUnsequencedGroup + ENET_PEER_FREE_UNSEQUENCED_WINDOWS * ENET_PEER_UNSEQUENCED_WINDOW_SIZE) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ unsequencedGroup &= 0xFFFF;
|
|
|
+
|
|
|
+ if (unsequencedGroup - index != peer->incomingUnsequencedGroup) {
|
|
|
+ peer->incomingUnsequencedGroup = unsequencedGroup - index;
|
|
|
+ memset(peer->unsequencedWindow, 0, sizeof(peer->unsequencedWindow));
|
|
|
+ } else if (peer->unsequencedWindow[index / 32] & (1 << (index % 32))) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (enet_peer_queue_incoming_command(peer, command, (const enet_uint8 *) command + sizeof(ENetProtocolSendUnsequenced), dataLength, ENET_PACKET_FLAG_UNSEQUENCED,0) == NULL) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ peer->unsequencedWindow[index / 32] |= 1 << (index % 32);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ } /* enet_protocol_handle_send_unsequenced */
|
|
|
+
|
|
|
+ static int enet_protocol_handle_send_unreliable(ENetHost *host, ENetPeer *peer, const ENetProtocol *command,
|
|
|
+ enet_uint8 **currentData) {
|
|
|
+ size_t dataLength;
|
|
|
+
|
|
|
+ if (command->header.channelID >= peer->channelCount ||
|
|
|
+ (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER))
|
|
|
+ {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ dataLength = ENET_NET_TO_HOST_16(command->sendUnreliable.dataLength);
|
|
|
+ *currentData += dataLength;
|
|
|
+ if (dataLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (enet_peer_queue_incoming_command(peer, command, (const enet_uint8 *) command + sizeof(ENetProtocolSendUnreliable), dataLength, 0, 0) == NULL) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ static int enet_protocol_handle_send_fragment(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) {
|
|
|
+ enet_uint32 fragmentNumber, fragmentCount, fragmentOffset, fragmentLength, startSequenceNumber, totalLength;
|
|
|
+ ENetChannel *channel;
|
|
|
+ enet_uint16 startWindow, currentWindow;
|
|
|
+ ENetListIterator currentCommand;
|
|
|
+ ENetIncomingCommand *startCommand = NULL;
|
|
|
+
|
|
|
+ if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ fragmentLength = ENET_NET_TO_HOST_16(command->sendFragment.dataLength);
|
|
|
+ *currentData += fragmentLength;
|
|
|
+ if (fragmentLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ channel = &peer->channels[command->header.channelID];
|
|
|
+ startSequenceNumber = ENET_NET_TO_HOST_16(command->sendFragment.startSequenceNumber);
|
|
|
+ startWindow = startSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE;
|
|
|
+ currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE;
|
|
|
+
|
|
|
+ if (startSequenceNumber < channel->incomingReliableSequenceNumber) {
|
|
|
+ startWindow += ENET_PEER_RELIABLE_WINDOWS;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (startWindow < currentWindow || startWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ fragmentNumber = ENET_NET_TO_HOST_32(command->sendFragment.fragmentNumber);
|
|
|
+ fragmentCount = ENET_NET_TO_HOST_32(command->sendFragment.fragmentCount);
|
|
|
+ fragmentOffset = ENET_NET_TO_HOST_32(command->sendFragment.fragmentOffset);
|
|
|
+ totalLength = ENET_NET_TO_HOST_32(command->sendFragment.totalLength);
|
|
|
+
|
|
|
+ if (fragmentCount > ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT ||
|
|
|
+ fragmentNumber >= fragmentCount ||
|
|
|
+ totalLength > host->maximumPacketSize ||
|
|
|
+ fragmentOffset >= totalLength ||
|
|
|
+ fragmentLength > totalLength - fragmentOffset
|
|
|
+ ) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (currentCommand = enet_list_previous(enet_list_end(&channel->incomingReliableCommands));
|
|
|
+ currentCommand != enet_list_end(&channel->incomingReliableCommands);
|
|
|
+ currentCommand = enet_list_previous(currentCommand)
|
|
|
+ ) {
|
|
|
+ ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand;
|
|
|
+
|
|
|
+ if (startSequenceNumber >= channel->incomingReliableSequenceNumber) {
|
|
|
+ if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ } else if (incomingCommand->reliableSequenceNumber >= channel->incomingReliableSequenceNumber) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (incomingCommand->reliableSequenceNumber <= startSequenceNumber) {
|
|
|
+ if (incomingCommand->reliableSequenceNumber < startSequenceNumber) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((incomingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK) !=
|
|
|
+ ENET_PROTOCOL_COMMAND_SEND_FRAGMENT ||
|
|
|
+ totalLength != incomingCommand->packet->dataLength ||
|
|
|
+ fragmentCount != incomingCommand->fragmentCount
|
|
|
+ ) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ startCommand = incomingCommand;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (startCommand == NULL) {
|
|
|
+ ENetProtocol hostCommand = *command;
|
|
|
+ hostCommand.header.reliableSequenceNumber = startSequenceNumber;
|
|
|
+ startCommand = enet_peer_queue_incoming_command(peer, &hostCommand, NULL, totalLength, ENET_PACKET_FLAG_RELIABLE, fragmentCount);
|
|
|
+ if (startCommand == NULL) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((startCommand->fragments[fragmentNumber / 32] & (1 << (fragmentNumber % 32))) == 0) {
|
|
|
+ --startCommand->fragmentsRemaining;
|
|
|
+ startCommand->fragments[fragmentNumber / 32] |= (1 << (fragmentNumber % 32));
|
|
|
+
|
|
|
+ if (fragmentOffset + fragmentLength > startCommand->packet->dataLength) {
|
|
|
+ fragmentLength = startCommand->packet->dataLength - fragmentOffset;
|
|
|
+ }
|
|
|
+
|
|
|
+ memcpy(startCommand->packet->data + fragmentOffset, (enet_uint8 *) command + sizeof(ENetProtocolSendFragment), fragmentLength);
|
|
|
+
|
|
|
+ if (startCommand->fragmentsRemaining <= 0) {
|
|
|
+ enet_peer_dispatch_incoming_reliable_commands(peer, channel);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ } /* enet_protocol_handle_send_fragment */
|
|
|
+
|
|
|
+ static int enet_protocol_handle_send_unreliable_fragment(ENetHost *host, ENetPeer *peer, const ENetProtocol *command, enet_uint8 **currentData) {
|
|
|
+ enet_uint32 fragmentNumber, fragmentCount, fragmentOffset, fragmentLength, reliableSequenceNumber, startSequenceNumber, totalLength;
|
|
|
+ enet_uint16 reliableWindow, currentWindow;
|
|
|
+ ENetChannel *channel;
|
|
|
+ ENetListIterator currentCommand;
|
|
|
+ ENetIncomingCommand *startCommand = NULL;
|
|
|
+
|
|
|
+ if (command->header.channelID >= peer->channelCount || (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER)) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ fragmentLength = ENET_NET_TO_HOST_16(command->sendFragment.dataLength);
|
|
|
+ *currentData += fragmentLength;
|
|
|
+ if (fragmentLength > host->maximumPacketSize || *currentData < host->receivedData || *currentData > &host->receivedData[host->receivedDataLength]) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ channel = &peer->channels[command->header.channelID];
|
|
|
+ reliableSequenceNumber = command->header.reliableSequenceNumber;
|
|
|
+ startSequenceNumber = ENET_NET_TO_HOST_16(command->sendFragment.startSequenceNumber);
|
|
|
+
|
|
|
+ reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE;
|
|
|
+ currentWindow = channel->incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE;
|
|
|
+
|
|
|
+ if (reliableSequenceNumber < channel->incomingReliableSequenceNumber) {
|
|
|
+ reliableWindow += ENET_PEER_RELIABLE_WINDOWS;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (reliableWindow < currentWindow || reliableWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (reliableSequenceNumber == channel->incomingReliableSequenceNumber && startSequenceNumber <= channel->incomingUnreliableSequenceNumber) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ fragmentNumber = ENET_NET_TO_HOST_32(command->sendFragment.fragmentNumber);
|
|
|
+ fragmentCount = ENET_NET_TO_HOST_32(command->sendFragment.fragmentCount);
|
|
|
+ fragmentOffset = ENET_NET_TO_HOST_32(command->sendFragment.fragmentOffset);
|
|
|
+ totalLength = ENET_NET_TO_HOST_32(command->sendFragment.totalLength);
|
|
|
+
|
|
|
+ if (fragmentCount > ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT ||
|
|
|
+ fragmentNumber >= fragmentCount ||
|
|
|
+ totalLength > host->maximumPacketSize ||
|
|
|
+ fragmentOffset >= totalLength ||
|
|
|
+ fragmentLength > totalLength - fragmentOffset
|
|
|
+ ) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ for (currentCommand = enet_list_previous(enet_list_end(&channel->incomingUnreliableCommands));
|
|
|
+ currentCommand != enet_list_end(&channel->incomingUnreliableCommands);
|
|
|
+ currentCommand = enet_list_previous(currentCommand)
|
|
|
+ ) {
|
|
|
+ ENetIncomingCommand *incomingCommand = (ENetIncomingCommand *) currentCommand;
|
|
|
+
|
|
|
+ if (reliableSequenceNumber >= channel->incomingReliableSequenceNumber) {
|
|
|
+ if (incomingCommand->reliableSequenceNumber < channel->incomingReliableSequenceNumber) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ } else if (incomingCommand->reliableSequenceNumber >= channel->incomingReliableSequenceNumber) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (incomingCommand->reliableSequenceNumber < reliableSequenceNumber) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (incomingCommand->reliableSequenceNumber > reliableSequenceNumber) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (incomingCommand->unreliableSequenceNumber <= startSequenceNumber) {
|
|
|
+ if (incomingCommand->unreliableSequenceNumber < startSequenceNumber) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((incomingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK) !=
|
|
|
+ ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT ||
|
|
|
+ totalLength != incomingCommand->packet->dataLength ||
|
|
|
+ fragmentCount != incomingCommand->fragmentCount
|
|
|
+ ) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ startCommand = incomingCommand;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (startCommand == NULL) {
|
|
|
+ startCommand = enet_peer_queue_incoming_command(peer, command, NULL, totalLength,
|
|
|
+ ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT, fragmentCount);
|
|
|
+ if (startCommand == NULL) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((startCommand->fragments[fragmentNumber / 32] & (1 << (fragmentNumber % 32))) == 0) {
|
|
|
+ --startCommand->fragmentsRemaining;
|
|
|
+ startCommand->fragments[fragmentNumber / 32] |= (1 << (fragmentNumber % 32));
|
|
|
+
|
|
|
+ if (fragmentOffset + fragmentLength > startCommand->packet->dataLength) {
|
|
|
+ fragmentLength = startCommand->packet->dataLength - fragmentOffset;
|
|
|
+ }
|
|
|
+
|
|
|
+ memcpy(startCommand->packet->data + fragmentOffset, (enet_uint8 *) command + sizeof(ENetProtocolSendFragment), fragmentLength);
|
|
|
+
|
|
|
+ if (startCommand->fragmentsRemaining <= 0) {
|
|
|
+ enet_peer_dispatch_incoming_unreliable_commands(peer, channel);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ } /* enet_protocol_handle_send_unreliable_fragment */
|
|
|
+
|
|
|
+ static int enet_protocol_handle_ping(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) {
|
|
|
+ ENET_UNUSED(host)
|
|
|
+ ENET_UNUSED(command)
|
|
|
+
|
|
|
+ if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ static int enet_protocol_handle_bandwidth_limit(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) {
|
|
|
+ if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer->incomingBandwidth != 0) {
|
|
|
+ --host->bandwidthLimitedPeers;
|
|
|
+ }
|
|
|
+
|
|
|
+ peer->incomingBandwidth = ENET_NET_TO_HOST_32(command->bandwidthLimit.incomingBandwidth);
|
|
|
+ peer->outgoingBandwidth = ENET_NET_TO_HOST_32(command->bandwidthLimit.outgoingBandwidth);
|
|
|
+
|
|
|
+ if (peer->incomingBandwidth != 0) {
|
|
|
+ ++host->bandwidthLimitedPeers;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer->incomingBandwidth == 0 && host->outgoingBandwidth == 0) {
|
|
|
+ peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE;
|
|
|
+ } else if (peer->incomingBandwidth == 0 || host->outgoingBandwidth == 0) {
|
|
|
+ peer->windowSize = (ENET_MAX(peer->incomingBandwidth, host->outgoingBandwidth)
|
|
|
+ / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE;
|
|
|
+ } else {
|
|
|
+ peer->windowSize = (ENET_MIN(peer->incomingBandwidth, host->outgoingBandwidth)
|
|
|
+ / ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer->windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) {
|
|
|
+ peer->windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE;
|
|
|
+ } else if (peer->windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) {
|
|
|
+ peer->windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ } /* enet_protocol_handle_bandwidth_limit */
|
|
|
+
|
|
|
+ static int enet_protocol_handle_throttle_configure(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) {
|
|
|
+ ENET_UNUSED(host)
|
|
|
+
|
|
|
+ if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ peer->packetThrottleInterval = ENET_NET_TO_HOST_32(command->throttleConfigure.packetThrottleInterval);
|
|
|
+ peer->packetThrottleAcceleration = ENET_NET_TO_HOST_32(command->throttleConfigure.packetThrottleAcceleration);
|
|
|
+ peer->packetThrottleDeceleration = ENET_NET_TO_HOST_32(command->throttleConfigure.packetThrottleDeceleration);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ static int enet_protocol_handle_disconnect(ENetHost *host, ENetPeer *peer, const ENetProtocol *command) {
|
|
|
+ if (peer->state == ENET_PEER_STATE_DISCONNECTED || peer->state == ENET_PEER_STATE_ZOMBIE ||
|
|
|
+ peer->state == ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT
|
|
|
+ ) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ enet_peer_reset_queues(peer);
|
|
|
+
|
|
|
+ if (peer->state == ENET_PEER_STATE_CONNECTION_SUCCEEDED || peer->state == ENET_PEER_STATE_DISCONNECTING || peer->state == ENET_PEER_STATE_CONNECTING) {
|
|
|
+ enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE);
|
|
|
+ }
|
|
|
+ else if (peer->state != ENET_PEER_STATE_CONNECTED && peer->state != ENET_PEER_STATE_DISCONNECT_LATER) {
|
|
|
+ if (peer->state == ENET_PEER_STATE_CONNECTION_PENDING) { host->recalculateBandwidthLimits = 1; }
|
|
|
+ enet_peer_reset(peer);
|
|
|
+ }
|
|
|
+ else if (command->header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) {
|
|
|
+ enet_protocol_change_state(host, peer, ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT);
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer->state != ENET_PEER_STATE_DISCONNECTED) {
|
|
|
+ peer->eventData = ENET_NET_TO_HOST_32(command->disconnect.data);
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ static int enet_protocol_handle_acknowledge(ENetHost *host, ENetEvent *event, ENetPeer *peer, const ENetProtocol *command) {
|
|
|
+ enet_uint32 roundTripTime, receivedSentTime, receivedReliableSequenceNumber;
|
|
|
+ ENetProtocolCommand commandNumber;
|
|
|
+
|
|
|
+ if (peer->state == ENET_PEER_STATE_DISCONNECTED || peer->state == ENET_PEER_STATE_ZOMBIE) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ receivedSentTime = ENET_NET_TO_HOST_16(command->acknowledge.receivedSentTime);
|
|
|
+ receivedSentTime |= host->serviceTime & 0xFFFF0000;
|
|
|
+ if ((receivedSentTime & 0x8000) > (host->serviceTime & 0x8000)) {
|
|
|
+ receivedSentTime -= 0x10000;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (ENET_TIME_LESS(host->serviceTime, receivedSentTime)) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ peer->lastReceiveTime = host->serviceTime;
|
|
|
+ peer->earliestTimeout = 0;
|
|
|
+ roundTripTime = ENET_TIME_DIFFERENCE(host->serviceTime, receivedSentTime);
|
|
|
+
|
|
|
+ enet_peer_throttle(peer, roundTripTime);
|
|
|
+ peer->roundTripTimeVariance -= peer->roundTripTimeVariance / 4;
|
|
|
+
|
|
|
+ if (roundTripTime >= peer->roundTripTime) {
|
|
|
+ peer->roundTripTime += (roundTripTime - peer->roundTripTime) / 8;
|
|
|
+ peer->roundTripTimeVariance += (roundTripTime - peer->roundTripTime) / 4;
|
|
|
+ } else {
|
|
|
+ peer->roundTripTime -= (peer->roundTripTime - roundTripTime) / 8;
|
|
|
+ peer->roundTripTimeVariance += (peer->roundTripTime - roundTripTime) / 4;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer->roundTripTime < peer->lowestRoundTripTime) {
|
|
|
+ peer->lowestRoundTripTime = peer->roundTripTime;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer->roundTripTimeVariance > peer->highestRoundTripTimeVariance) {
|
|
|
+ peer->highestRoundTripTimeVariance = peer->roundTripTimeVariance;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer->packetThrottleEpoch == 0 ||
|
|
|
+ ENET_TIME_DIFFERENCE(host->serviceTime, peer->packetThrottleEpoch) >= peer->packetThrottleInterval
|
|
|
+ ) {
|
|
|
+ peer->lastRoundTripTime = peer->lowestRoundTripTime;
|
|
|
+ peer->lastRoundTripTimeVariance = peer->highestRoundTripTimeVariance;
|
|
|
+ peer->lowestRoundTripTime = peer->roundTripTime;
|
|
|
+ peer->highestRoundTripTimeVariance = peer->roundTripTimeVariance;
|
|
|
+ peer->packetThrottleEpoch = host->serviceTime;
|
|
|
+ }
|
|
|
+
|
|
|
+ receivedReliableSequenceNumber = ENET_NET_TO_HOST_16(command->acknowledge.receivedReliableSequenceNumber);
|
|
|
+ commandNumber = enet_protocol_remove_sent_reliable_command(peer, receivedReliableSequenceNumber, command->header.channelID);
|
|
|
+
|
|
|
+ switch (peer->state) {
|
|
|
+ case ENET_PEER_STATE_ACKNOWLEDGING_CONNECT:
|
|
|
+ if (commandNumber != ENET_PROTOCOL_COMMAND_VERIFY_CONNECT) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ enet_protocol_notify_connect(host, peer, event);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PEER_STATE_DISCONNECTING:
|
|
|
+ if (commandNumber != ENET_PROTOCOL_COMMAND_DISCONNECT) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ enet_protocol_notify_disconnect(host, peer, event);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PEER_STATE_DISCONNECT_LATER:
|
|
|
+ if (enet_list_empty(&peer->outgoingReliableCommands) &&
|
|
|
+ enet_list_empty(&peer->outgoingUnreliableCommands) &&
|
|
|
+ enet_list_empty(&peer->sentReliableCommands))
|
|
|
+ {
|
|
|
+ enet_peer_disconnect(peer, peer->eventData);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ } /* enet_protocol_handle_acknowledge */
|
|
|
+
|
|
|
+ static int enet_protocol_handle_verify_connect(ENetHost *host, ENetEvent *event, ENetPeer *peer, const ENetProtocol *command) {
|
|
|
+ enet_uint32 mtu, windowSize;
|
|
|
+ size_t channelCount;
|
|
|
+
|
|
|
+ if (peer->state != ENET_PEER_STATE_CONNECTING) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ channelCount = ENET_NET_TO_HOST_32(command->verifyConnect.channelCount);
|
|
|
+
|
|
|
+ if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT || channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT ||
|
|
|
+ ENET_NET_TO_HOST_32(command->verifyConnect.packetThrottleInterval) != peer->packetThrottleInterval ||
|
|
|
+ ENET_NET_TO_HOST_32(command->verifyConnect.packetThrottleAcceleration) != peer->packetThrottleAcceleration ||
|
|
|
+ ENET_NET_TO_HOST_32(command->verifyConnect.packetThrottleDeceleration) != peer->packetThrottleDeceleration ||
|
|
|
+ command->verifyConnect.connectID != peer->connectID
|
|
|
+ ) {
|
|
|
+ peer->eventData = 0;
|
|
|
+ enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE);
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ enet_protocol_remove_sent_reliable_command(peer, 1, 0xFF);
|
|
|
+
|
|
|
+ if (channelCount < peer->channelCount) {
|
|
|
+ peer->channelCount = channelCount;
|
|
|
+ }
|
|
|
+
|
|
|
+ peer->outgoingPeerID = ENET_NET_TO_HOST_16(command->verifyConnect.outgoingPeerID);
|
|
|
+ peer->incomingSessionID = command->verifyConnect.incomingSessionID;
|
|
|
+ peer->outgoingSessionID = command->verifyConnect.outgoingSessionID;
|
|
|
+
|
|
|
+ mtu = ENET_NET_TO_HOST_32(command->verifyConnect.mtu);
|
|
|
+
|
|
|
+ if (mtu < ENET_PROTOCOL_MINIMUM_MTU) {
|
|
|
+ mtu = ENET_PROTOCOL_MINIMUM_MTU;
|
|
|
+ } else if (mtu > ENET_PROTOCOL_MAXIMUM_MTU) {
|
|
|
+ mtu = ENET_PROTOCOL_MAXIMUM_MTU;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (mtu < peer->mtu) {
|
|
|
+ peer->mtu = mtu;
|
|
|
+ }
|
|
|
+
|
|
|
+ windowSize = ENET_NET_TO_HOST_32(command->verifyConnect.windowSize);
|
|
|
+ if (windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) {
|
|
|
+ windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) {
|
|
|
+ windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (windowSize < peer->windowSize) {
|
|
|
+ peer->windowSize = windowSize;
|
|
|
+ }
|
|
|
+
|
|
|
+ peer->incomingBandwidth = ENET_NET_TO_HOST_32(command->verifyConnect.incomingBandwidth);
|
|
|
+ peer->outgoingBandwidth = ENET_NET_TO_HOST_32(command->verifyConnect.outgoingBandwidth);
|
|
|
+
|
|
|
+ enet_protocol_notify_connect(host, peer, event);
|
|
|
+ return 0;
|
|
|
+ } /* enet_protocol_handle_verify_connect */
|
|
|
+
|
|
|
+ static int enet_protocol_handle_incoming_commands(ENetHost *host, ENetEvent *event) {
|
|
|
+ ENetProtocolHeader *header;
|
|
|
+ ENetProtocol *command;
|
|
|
+ ENetPeer *peer;
|
|
|
+ enet_uint8 *currentData;
|
|
|
+ size_t headerSize;
|
|
|
+ enet_uint16 peerID, flags;
|
|
|
+ enet_uint8 sessionID;
|
|
|
+
|
|
|
+ if (host->receivedDataLength < (size_t) &((ENetProtocolHeader *) 0)->sentTime) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ header = (ENetProtocolHeader *) host->receivedData;
|
|
|
+
|
|
|
+ peerID = ENET_NET_TO_HOST_16(header->peerID);
|
|
|
+ sessionID = (peerID & ENET_PROTOCOL_HEADER_SESSION_MASK) >> ENET_PROTOCOL_HEADER_SESSION_SHIFT;
|
|
|
+ flags = peerID & ENET_PROTOCOL_HEADER_FLAG_MASK;
|
|
|
+ peerID &= ~(ENET_PROTOCOL_HEADER_FLAG_MASK | ENET_PROTOCOL_HEADER_SESSION_MASK);
|
|
|
+
|
|
|
+ headerSize = (flags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME ? sizeof(ENetProtocolHeader) : (size_t) &((ENetProtocolHeader *) 0)->sentTime);
|
|
|
+ if (host->checksum != NULL) {
|
|
|
+ headerSize += sizeof(enet_uint32);
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peerID == ENET_PROTOCOL_MAXIMUM_PEER_ID) {
|
|
|
+ peer = NULL;
|
|
|
+ } else if (peerID >= host->peerCount) {
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ peer = &host->peers[peerID];
|
|
|
+
|
|
|
+ if (peer->state == ENET_PEER_STATE_DISCONNECTED ||
|
|
|
+ peer->state == ENET_PEER_STATE_ZOMBIE ||
|
|
|
+ ((!in6_equal(host->receivedAddress.host , peer->address.host) ||
|
|
|
+ host->receivedAddress.port != peer->address.port) &&
|
|
|
+ 1 /* no broadcast in ipv6 !in6_equal(peer->address.host , ENET_HOST_BROADCAST)*/) ||
|
|
|
+ (peer->outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID &&
|
|
|
+ sessionID != peer->incomingSessionID)
|
|
|
+ ) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (flags & ENET_PROTOCOL_HEADER_FLAG_COMPRESSED) {
|
|
|
+ size_t originalSize;
|
|
|
+ if (host->compressor.context == NULL || host->compressor.decompress == NULL) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ originalSize = host->compressor.decompress(host->compressor.context,
|
|
|
+ host->receivedData + headerSize,
|
|
|
+ host->receivedDataLength - headerSize,
|
|
|
+ host->packetData[1] + headerSize,
|
|
|
+ sizeof(host->packetData[1]) - headerSize
|
|
|
+ );
|
|
|
+
|
|
|
+ if (originalSize <= 0 || originalSize > sizeof(host->packetData[1]) - headerSize) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ memcpy(host->packetData[1], header, headerSize);
|
|
|
+ host->receivedData = host->packetData[1];
|
|
|
+ host->receivedDataLength = headerSize + originalSize;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (host->checksum != NULL) {
|
|
|
+ enet_uint32 *checksum = (enet_uint32 *) &host->receivedData[headerSize - sizeof(enet_uint32)];
|
|
|
+ enet_uint32 desiredChecksum = *checksum;
|
|
|
+ ENetBuffer buffer;
|
|
|
+
|
|
|
+ *checksum = peer != NULL ? peer->connectID : 0;
|
|
|
+
|
|
|
+ buffer.data = host->receivedData;
|
|
|
+ buffer.dataLength = host->receivedDataLength;
|
|
|
+
|
|
|
+ if (host->checksum(&buffer, 1) != desiredChecksum) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer != NULL) {
|
|
|
+ peer->address.host = host->receivedAddress.host;
|
|
|
+ peer->address.port = host->receivedAddress.port;
|
|
|
+ peer->incomingDataTotal += host->receivedDataLength;
|
|
|
+ peer->totalDataReceived += host->receivedDataLength;
|
|
|
+ }
|
|
|
+
|
|
|
+ currentData = host->receivedData + headerSize;
|
|
|
+
|
|
|
+ while (currentData < &host->receivedData[host->receivedDataLength]) {
|
|
|
+ enet_uint8 commandNumber;
|
|
|
+ size_t commandSize;
|
|
|
+
|
|
|
+ command = (ENetProtocol *) currentData;
|
|
|
+
|
|
|
+ if (currentData + sizeof(ENetProtocolCommandHeader) > &host->receivedData[host->receivedDataLength]) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ commandNumber = command->header.command & ENET_PROTOCOL_COMMAND_MASK;
|
|
|
+ if (commandNumber >= ENET_PROTOCOL_COMMAND_COUNT) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ commandSize = commandSizes[commandNumber];
|
|
|
+ if (commandSize == 0 || currentData + commandSize > &host->receivedData[host->receivedDataLength]) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ currentData += commandSize;
|
|
|
+
|
|
|
+ if (peer == NULL && (commandNumber != ENET_PROTOCOL_COMMAND_CONNECT || currentData < &host->receivedData[host->receivedDataLength])) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ command->header.reliableSequenceNumber = ENET_NET_TO_HOST_16(command->header.reliableSequenceNumber);
|
|
|
+
|
|
|
+ switch (commandNumber) {
|
|
|
+ case ENET_PROTOCOL_COMMAND_ACKNOWLEDGE:
|
|
|
+ if (enet_protocol_handle_acknowledge(host, event, peer, command)) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PROTOCOL_COMMAND_CONNECT:
|
|
|
+ if (peer != NULL) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ peer = enet_protocol_handle_connect(host, header, command);
|
|
|
+ if (peer == NULL) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PROTOCOL_COMMAND_VERIFY_CONNECT:
|
|
|
+ if (enet_protocol_handle_verify_connect(host, event, peer, command)) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PROTOCOL_COMMAND_DISCONNECT:
|
|
|
+ if (enet_protocol_handle_disconnect(host, peer, command)) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PROTOCOL_COMMAND_PING:
|
|
|
+ if (enet_protocol_handle_ping(host, peer, command)) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PROTOCOL_COMMAND_SEND_RELIABLE:
|
|
|
+ if (enet_protocol_handle_send_reliable(host, peer, command, ¤tData)) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE:
|
|
|
+ if (enet_protocol_handle_send_unreliable(host, peer, command, ¤tData)) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED:
|
|
|
+ if (enet_protocol_handle_send_unsequenced(host, peer, command, ¤tData)) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT:
|
|
|
+ if (enet_protocol_handle_send_fragment(host, peer, command, ¤tData)) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PROTOCOL_COMMAND_BANDWIDTH_LIMIT:
|
|
|
+ if (enet_protocol_handle_bandwidth_limit(host, peer, command)) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PROTOCOL_COMMAND_THROTTLE_CONFIGURE:
|
|
|
+ if (enet_protocol_handle_throttle_configure(host, peer, command)) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT:
|
|
|
+ if (enet_protocol_handle_send_unreliable_fragment(host, peer, command, ¤tData)) {
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ goto commandError;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer != NULL && (command->header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) != 0) {
|
|
|
+ enet_uint16 sentTime;
|
|
|
+
|
|
|
+ if (!(flags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME)) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ sentTime = ENET_NET_TO_HOST_16(header->sentTime);
|
|
|
+
|
|
|
+ switch (peer->state) {
|
|
|
+ case ENET_PEER_STATE_DISCONNECTING:
|
|
|
+ case ENET_PEER_STATE_ACKNOWLEDGING_CONNECT:
|
|
|
+ case ENET_PEER_STATE_DISCONNECTED:
|
|
|
+ case ENET_PEER_STATE_ZOMBIE:
|
|
|
+ break;
|
|
|
+
|
|
|
+ case ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT:
|
|
|
+ if ((command->header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_DISCONNECT) {
|
|
|
+ enet_peer_queue_acknowledgement(peer, command, sentTime);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ enet_peer_queue_acknowledgement(peer, command, sentTime);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ commandError:
|
|
|
+ if (event != NULL && event->type != ENET_EVENT_TYPE_NONE) {
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ } /* enet_protocol_handle_incoming_commands */
|
|
|
+
|
|
|
+ static int enet_protocol_receive_incoming_commands(ENetHost *host, ENetEvent *event) {
|
|
|
+ int packets;
|
|
|
+
|
|
|
+ for (packets = 0; packets < 256; ++packets) {
|
|
|
+ int receivedLength;
|
|
|
+ ENetBuffer buffer;
|
|
|
+
|
|
|
+ buffer.data = host->packetData[0];
|
|
|
+ // buffer.dataLength = sizeof (host->packetData[0]);
|
|
|
+ buffer.dataLength = host->mtu;
|
|
|
+
|
|
|
+ receivedLength = enet_socket_receive(host->socket, &host->receivedAddress, &buffer, 1);
|
|
|
+
|
|
|
+ if (receivedLength == -2)
|
|
|
+ continue;
|
|
|
+
|
|
|
+ if (receivedLength < 0) {
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (receivedLength == 0) {
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ host->receivedData = host->packetData[0];
|
|
|
+ host->receivedDataLength = receivedLength;
|
|
|
+
|
|
|
+ host->totalReceivedData += receivedLength;
|
|
|
+ host->totalReceivedPackets++;
|
|
|
+
|
|
|
+ if (host->intercept != NULL) {
|
|
|
+ switch (host->intercept(host, (void *)event)) {
|
|
|
+ case 1:
|
|
|
+ if (event != NULL && event->type != ENET_EVENT_TYPE_NONE) {
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ continue;
|
|
|
+
|
|
|
+ case -1:
|
|
|
+ return -1;
|
|
|
+
|
|
|
+ default:
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ switch (enet_protocol_handle_incoming_commands(host, event)) {
|
|
|
+ case 1:
|
|
|
+ return 1;
|
|
|
+
|
|
|
+ case -1:
|
|
|
+ return -1;
|
|
|
+
|
|
|
+ default:
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return -1;
|
|
|
+ } /* enet_protocol_receive_incoming_commands */
|
|
|
+
|
|
|
+ static void enet_protocol_send_acknowledgements(ENetHost *host, ENetPeer *peer) {
|
|
|
+ ENetProtocol *command = &host->commands[host->commandCount];
|
|
|
+ ENetBuffer *buffer = &host->buffers[host->bufferCount];
|
|
|
+ ENetAcknowledgement *acknowledgement;
|
|
|
+ ENetListIterator currentAcknowledgement;
|
|
|
+ enet_uint16 reliableSequenceNumber;
|
|
|
+
|
|
|
+ currentAcknowledgement = enet_list_begin(&peer->acknowledgements);
|
|
|
+
|
|
|
+ while (currentAcknowledgement != enet_list_end(&peer->acknowledgements)) {
|
|
|
+ if (command >= &host->commands[sizeof(host->commands) / sizeof(ENetProtocol)] ||
|
|
|
+ buffer >= &host->buffers[sizeof(host->buffers) / sizeof(ENetBuffer)] ||
|
|
|
+ peer->mtu - host->packetSize < sizeof(ENetProtocolAcknowledge)
|
|
|
+ ) {
|
|
|
+ host->continueSending = 1;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ acknowledgement = (ENetAcknowledgement *) currentAcknowledgement;
|
|
|
+ currentAcknowledgement = enet_list_next(currentAcknowledgement);
|
|
|
+
|
|
|
+ buffer->data = command;
|
|
|
+ buffer->dataLength = sizeof(ENetProtocolAcknowledge);
|
|
|
+ host->packetSize += buffer->dataLength;
|
|
|
+
|
|
|
+ reliableSequenceNumber = ENET_HOST_TO_NET_16(acknowledgement->command.header.reliableSequenceNumber);
|
|
|
+
|
|
|
+ command->header.command = ENET_PROTOCOL_COMMAND_ACKNOWLEDGE;
|
|
|
+ command->header.channelID = acknowledgement->command.header.channelID;
|
|
|
+ command->header.reliableSequenceNumber = reliableSequenceNumber;
|
|
|
+ command->acknowledge.receivedReliableSequenceNumber = reliableSequenceNumber;
|
|
|
+ command->acknowledge.receivedSentTime = ENET_HOST_TO_NET_16(acknowledgement->sentTime);
|
|
|
+
|
|
|
+ if ((acknowledgement->command.header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_DISCONNECT) {
|
|
|
+ enet_protocol_dispatch_state(host, peer, ENET_PEER_STATE_ZOMBIE);
|
|
|
+ }
|
|
|
+
|
|
|
+ enet_list_remove(&acknowledgement->acknowledgementList);
|
|
|
+ enet_free(acknowledgement);
|
|
|
+
|
|
|
+ ++command;
|
|
|
+ ++buffer;
|
|
|
+ }
|
|
|
+
|
|
|
+ host->commandCount = command - host->commands;
|
|
|
+ host->bufferCount = buffer - host->buffers;
|
|
|
+ } /* enet_protocol_send_acknowledgements */
|
|
|
+
|
|
|
+ static void enet_protocol_send_unreliable_outgoing_commands(ENetHost *host, ENetPeer *peer) {
|
|
|
+ ENetProtocol *command = &host->commands[host->commandCount];
|
|
|
+ ENetBuffer *buffer = &host->buffers[host->bufferCount];
|
|
|
+ ENetOutgoingCommand *outgoingCommand;
|
|
|
+ ENetListIterator currentCommand;
|
|
|
+
|
|
|
+ currentCommand = enet_list_begin(&peer->outgoingUnreliableCommands);
|
|
|
+ while (currentCommand != enet_list_end(&peer->outgoingUnreliableCommands)) {
|
|
|
+ size_t commandSize;
|
|
|
+
|
|
|
+ outgoingCommand = (ENetOutgoingCommand *) currentCommand;
|
|
|
+ commandSize = commandSizes[outgoingCommand->command.header.command & ENET_PROTOCOL_COMMAND_MASK];
|
|
|
+
|
|
|
+ if (command >= &host->commands[sizeof(host->commands) / sizeof(ENetProtocol)] ||
|
|
|
+ buffer + 1 >= &host->buffers[sizeof(host->buffers) / sizeof(ENetBuffer)] ||
|
|
|
+ peer->mtu - host->packetSize < commandSize ||
|
|
|
+ (outgoingCommand->packet != NULL &&
|
|
|
+ peer->mtu - host->packetSize < commandSize + outgoingCommand->fragmentLength)
|
|
|
+ ) {
|
|
|
+ host->continueSending = 1;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ currentCommand = enet_list_next(currentCommand);
|
|
|
+
|
|
|
+ if (outgoingCommand->packet != NULL && outgoingCommand->fragmentOffset == 0) {
|
|
|
+ peer->packetThrottleCounter += ENET_PEER_PACKET_THROTTLE_COUNTER;
|
|
|
+ peer->packetThrottleCounter %= ENET_PEER_PACKET_THROTTLE_SCALE;
|
|
|
+
|
|
|
+ if (peer->packetThrottleCounter > peer->packetThrottle) {
|
|
|
+ enet_uint16 reliableSequenceNumber = outgoingCommand->reliableSequenceNumber;
|
|
|
+ enet_uint16 unreliableSequenceNumber = outgoingCommand->unreliableSequenceNumber;
|
|
|
+ for (;;) {
|
|
|
+ --outgoingCommand->packet->referenceCount;
|
|
|
+
|
|
|
+ if (outgoingCommand->packet->referenceCount == 0) {
|
|
|
+ enet_packet_destroy(outgoingCommand->packet);
|
|
|
+ }
|
|
|
+
|
|
|
+ enet_list_remove(&outgoingCommand->outgoingCommandList);
|
|
|
+ enet_free(outgoingCommand);
|
|
|
+
|
|
|
+ if (currentCommand == enet_list_end(&peer->outgoingUnreliableCommands)) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ outgoingCommand = (ENetOutgoingCommand *) currentCommand;
|
|
|
+ if (outgoingCommand->reliableSequenceNumber != reliableSequenceNumber || outgoingCommand->unreliableSequenceNumber != unreliableSequenceNumber) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ currentCommand = enet_list_next(currentCommand);
|
|
|
+ }
|
|
|
+
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ buffer->data = command;
|
|
|
+ buffer->dataLength = commandSize;
|
|
|
+ host->packetSize += buffer->dataLength;
|
|
|
+ *command = outgoingCommand->command;
|
|
|
+ enet_list_remove(&outgoingCommand->outgoingCommandList);
|
|
|
+
|
|
|
+ if (outgoingCommand->packet != NULL) {
|
|
|
+ ++buffer;
|
|
|
+
|
|
|
+ buffer->data = outgoingCommand->packet->data + outgoingCommand->fragmentOffset;
|
|
|
+ buffer->dataLength = outgoingCommand->fragmentLength;
|
|
|
+
|
|
|
+ host->packetSize += buffer->dataLength;
|
|
|
+
|
|
|
+ enet_list_insert(enet_list_end(&peer->sentUnreliableCommands), outgoingCommand);
|
|
|
+ } else {
|
|
|
+ enet_free(outgoingCommand);
|
|
|
+ }
|
|
|
+
|
|
|
+ ++command;
|
|
|
+ ++buffer;
|
|
|
+ }
|
|
|
+
|
|
|
+ host->commandCount = command - host->commands;
|
|
|
+ host->bufferCount = buffer - host->buffers;
|
|
|
+
|
|
|
+ if (peer->state == ENET_PEER_STATE_DISCONNECT_LATER &&
|
|
|
+ enet_list_empty(&peer->outgoingReliableCommands) &&
|
|
|
+ enet_list_empty(&peer->outgoingUnreliableCommands) &&
|
|
|
+ enet_list_empty(&peer->sentReliableCommands))
|
|
|
+ {
|
|
|
+ enet_peer_disconnect(peer, peer->eventData);
|
|
|
+ }
|
|
|
+ } /* enet_protocol_send_unreliable_outgoing_commands */
|
|
|
+
|
|
|
+ static int enet_protocol_check_timeouts(ENetHost *host, ENetPeer *peer, ENetEvent *event) {
|
|
|
+ ENetOutgoingCommand *outgoingCommand;
|
|
|
+ ENetListIterator currentCommand, insertPosition;
|
|
|
+
|
|
|
+ currentCommand = enet_list_begin(&peer->sentReliableCommands);
|
|
|
+ insertPosition = enet_list_begin(&peer->outgoingReliableCommands);
|
|
|
+
|
|
|
+ while (currentCommand != enet_list_end(&peer->sentReliableCommands)) {
|
|
|
+ outgoingCommand = (ENetOutgoingCommand *) currentCommand;
|
|
|
+
|
|
|
+ currentCommand = enet_list_next(currentCommand);
|
|
|
+
|
|
|
+ if (ENET_TIME_DIFFERENCE(host->serviceTime, outgoingCommand->sentTime) < outgoingCommand->roundTripTimeout) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (peer->earliestTimeout == 0 || ENET_TIME_LESS(outgoingCommand->sentTime, peer->earliestTimeout)) {
|
|
|
+ peer->earliestTimeout = outgoingCommand->sentTime;
|
|
|
+ }
|
|
|