C# 和 NetworkStream，發送正常但接收不工作

Question

這是源代碼，我無法理解會發生什么。 當我從服務器接收數據然后寫回 NetworkStream 然后它工作但是當我嘗試在從服務器讀取之前先發送它不起作用：

void BtnConnectClick(object sender, EventArgs e)
{
    TcpClient clientSocket = null;
    NetworkStream networkStream = null;
    try{
        clientSocket = new TcpClient();         
        clientSocket.SendTimeout = 5000;
        clientSocket.ReceiveTimeout = 5000;
        clientSocket.Connect("192.168.0.13",7777);

        networkStream = clientSocket.GetStream();   

        const string strToAndroid = "hi from client";
        char[] carray = strToAndroid.ToCharArray();
        for (int i=0;i<carray.GetLength(0);i++)
        {
            networkStream.WriteByte((byte)carray[i]);
        }
        log("sent to Android = " + strToAndroid);

        string strFromAndroid = "";
        int j=0;
        while (j!=-1)
        {
            try
            {
                j = networkStream.ReadByte();
                if (j!=-1)
                    strFromAndroid += (char)j;
            }
            catch(Exception ex){
                break;
            }
        }
        log("received from Android = " + strFromAndroid);

        networkStream.Close();
        clientSocket.Close();               
    }
    catch(Exception ex){
        log("002:" + ex.Message);
        if (networkStream != null)
            networkStream.Close();
        if (clientSocket != null)
            clientSocket.Close();
    }

}

Answer 1

這是一個服務器端問題，所以這段代碼沒問題。 服務器從未收到值 -1，因此它沒有回復。