message MercuryRequest {
    required string url = 0x01;
    optional string mime = 0x02;
    required string method = 0x03;
}

message MercuryReply {
    required string url = 0x01;
    required string mime = 0x02;
    required sint32 code = 0x04;
    repeated Header header = 0x06;

    message Header {
        required string key = 0x01;
        required bytes value = 0x02;
    }
}

message MercuryGetRequest {
    required string url = 0x01;
    optional string method = 0x03;
}

message MercuryMultiGetRequest {
    repeated MercuryGetRequest request = 0x01;
}

message MercuryGetReply {
    enum CachePolicy {
        CACHE_NO = 1;
        CACHE_PRIVATE = 2;
        CACHE_PUBLIC = 3;
    }
    optional sint32 code = 0x01;
    optional CachePolicy cache_policy = 0x03;
    optional uint32 ttl = 0x04;
    optional bytes etag = 0x05;
    optional string mime = 0x06;
    optional bytes body = 0x07;
}

message MercuryMultiGetReply {
    repeated MercuryGetReply reply = 0x1;
}

message MercurySubscribed {
    required string url = 0x1;
}