在C＃服务器和iOs之间发送数据

我要做的是通过使用套接字将数据（在json格式下）从目标C（GCDAsyncSocket）发送到服务器C＃ .

基本上，下面的代码是针对C＃服务器和客户端目标C.

Server C＃:(我遵循msdn的代码）

public class SynchronousSocketClient {

public static void StartClient() {
    // Data buffer for incoming data.
    byte[] bytes = new byte[1024];

    // Connect to a remote device.
    try {
        // Establish the remote endpoint for the socket.
        // This example uses port 11000 on the local computer.
        IPHostEntry ipHostInfo = Dns.Resolve(Dns.GetHostName())
        IPAddress ipAddress = ipHostInfo.AddressList[0];
        IPEndPoint remoteEP = new IPEndPoint(ipAddress,11000);

        // Create a TCP/IP  socket.
        Socket sender = new Socket(AddressFamily.InterNetwork, 
            SocketType.Stream, ProtocolType.Tcp );

        // Connect the socket to the remote endpoint. Catch any errors.
        try {
            sender.Connect(remoteEP);

            Console.WriteLine("Socket connected to {0}",
                sender.RemoteEndPoint.ToString());

            // Encode the data string into a byte array.
            byte[] msg = Encoding.ASCII.GetBytes("This is a test<EOF>");

            // Send the data through the socket.
            int bytesSent = sender.Send(msg);

            // Receive the response from the remote device.
            int bytesRec = sender.Receive(bytes);
            Console.WriteLine("Echoed test = {0}",
                Encoding.ASCII.GetString(bytes,0,bytesRec));

            // Release the socket.
            sender.Shutdown(SocketShutdown.Both);
            sender.Close();

        } catch (ArgumentNullException ane) {
            Console.WriteLine("ArgumentNullException : {0}",ane.ToString());
        } catch (SocketException se) {
            Console.WriteLine("SocketException : {0}",se.ToString());
        } catch (Exception e) {
            Console.WriteLine("Unexpected exception : {0}", e.ToString());
        }

    } catch (Exception e) {
        Console.WriteLine( e.ToString());
    }
}

    public static int Main(String[] args) {
        StartClient();
        return 0;
    }
}

客户：目标C

- (void)connect:(NSString *)host portNo:(NSString *)portno {

    m_host = host ;
    m_portno = [portno intValue];

    if (m_soc == nil) {
        m_soc = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
    } else {
        if (m_soc.isConnected) {
            [m_soc disconnect];
        }
    }
    NSError *error = nil;
    m_isConnected = false ;
    if (![m_soc connectToHost:m_host onPort:m_portno withTimeout:3.0 error:&error]) {
        [self onError:@"Error in Connecting to Host."];
    } 
}

不幸的是，我得到的结果是

“错误的NSError *域：@”GCDAsyncSocketErrorDomain“ - 代码：3”

这只是一个连接，尚未对发送数据做任何事情 . 希望得到大家的回应 . 非常感谢 .