Fix tokio depreciation warnings

Cargo.lock

@@ -541,6 +541,7 @@ dependencies = [
  "serde_derive 0.9.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 0.9.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "shannon 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-core 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",

core/Cargo.toml

@@ -30,6 +30,7 @@ serde = "0.9.6"
 serde_derive = "0.9.6"
 serde_json = "0.9.5"
 shannon = "0.2.0"
+tokio-codec = "0.1.1"
 tokio-core = "0.1.2"
 tokio-io = "0.1"
 url = "1.7.0"

core/src/connection/handshake.rs

@@ -7,7 +7,7 @@ use protobuf::{self, Message};
 use rand::thread_rng;
 use std::io::{self, Read};
 use std::marker::PhantomData;
-use tokio_io::codec::Framed;
+use tokio_codec::{Decoder, Framed};
 use tokio_io::io::{read_exact, write_all, ReadExact, Window, WriteAll};
 use tokio_io::{AsyncRead, AsyncWrite};
 
@@ -73,7 +73,7 @@ impl<T: AsyncRead + AsyncWrite> Future for Handshake<T> {
                 ClientResponse(ref mut codec, ref mut write) => {
                     let (connection, _) = try_ready!(write.poll());
                     let codec = codec.take().unwrap();
-                    let framed = connection.framed(codec);
+                    let framed = codec.framed(connection);
                     return Ok(Async::Ready(framed));
                 }
             }

core/src/connection/mod.rs

@@ -10,7 +10,7 @@ use std::io;
 use std::net::ToSocketAddrs;
 use tokio_core::net::TcpStream;
 use tokio_core::reactor::Handle;
-use tokio_io::codec::Framed;
+use tokio_codec::Framed;
 use url::Url;
 
 use authentication::Credentials;

core/src/lib.rs

@@ -28,6 +28,7 @@ extern crate rpassword;
 extern crate serde;
 extern crate serde_json;
 extern crate shannon;
+extern crate tokio_codec;
 extern crate tokio_core;
 extern crate tokio_io;
 extern crate url;