附加信息：来自HRESULT的异常：0x800a9c46

问题描述

服务器窗口打开客户端窗口

客户端连接服务器on portno = 514

连接成功完成

但是当从客户端发送消息时服务器给出错误消息







代码



服务器程序

server window opens client window
client connects server on portno=514
connection done successfully
but when send message from the client to server give error message



Code

Server Program

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WinsockClient
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            this.w1.ConnectionRequest += new AxMSWinsockLib.DMSWinsockControlEvents_ConnectionRequestEventHandler(this.w1_ConnectionRequest);
        }
        Boolean isConnected = false;
        private void start_Click(object sender, EventArgs e)
        {
            if (portText.Text != "")
            {
                w1.LocalPort = Int32.Parse(portText.Text);
                w1.Listen();
            }
        }

        private void Disconnect_Click(object sender, EventArgs e)
        {
            w1.Close();
            w1.LocalPort = Int32.Parse(portText.Text);
            w1.Listen();
            DataInput.Text += "\n - Disconnected";
        }

        private void w1_ConnectionRequest(object sender, AxMSWinsockLib.DMSWinsockControlEvents_ConnectionRequestEvent e)
        {
            if (isConnected == true)
            {
                w1.Close();
            }


            w1.Accept(e.requestID);
            isConnected = true;

            DataInput.Text += "\n - Client Connected :" + w1.RemoteHostIP;
        }
    }
}

第二客户计划

2nd Client Program

using System;
using System.Net.Sockets;
using System.Threading;
using System.Windows.Forms;

namespace Winsock_Client
{
    public partial class Form1 : Form
    {
        public Form1()
        {
         InitializeComponent();
            this.w1.Error += new AxMSWinsockLib.DMSWinsockControlEvents_ErrorEventHandler(this.w1_Error);
            this.w1.ConnectEvent += new System.EventHandler(this.w1_ConnectEvent);
            this.w1.DataArrival += new AxMSWinsockLib.DMSWinsockControlEvents_DataArrivalEventHandler(this.w1_DataArrival);
        }
        Boolean isConnect = false;
        private void Connect_Click(object sender, EventArgs e)
        {
            try
            {
                w1.Close();
                w1.Connect(IPText.Text, PortText.Text);
            }
            catch (System.Windows.Forms.AxHost.InvalidActiveXStateException g)
            {
                DataInput.Text += "\n" + g.ToString();
            }
        }

        private void Send_Click(object sender, EventArgs e)
        {
            try
            {
                if (isConnect)
                {
                    w1.SendData(SendText.Text);

                    DataInput.Text += "\nClent(You ;-) : " + SendText.Text;

                    SendText.Text = "";
                }
                else
                    MessageBox.Show("You are not connect to any host ");
            }
            catch (AxMSWinsockLib.AxWinsock.InvalidActiveXStateException g)
            {
                DataInput.Text += "\n" + g.ToString();
            }
            catch (Exception ex)
            {
                DataInput.Text += "\n" + ex.Message;
            }
        }

        private void w1_Error(object sender, AxMSWinsockLib.DMSWinsockControlEvents_ErrorEvent e)
        {
            DataInput.Text += "\n- Error : " + e.description;
            isConnect = false;
        }

        private void w1_DataArrival(object sender, AxMSWinsockLib.DMSWinsockControlEvents_DataArrivalEvent e)
        {
            String data = " ";
            Object dat = (object)data;
            w1.GetData(ref dat);
            data = (String)dat;
            DataInput.Text += "\nServer - " + w1.RemoteHostIP + " : " + data;
        }

        private void w1_ConnectEvent(object sender, EventArgs e)
        {
            DataInput.Text += "\n - Connect Event : " + w1.RemoteHostIP;
            isConnect = true;
        }
    }
}

行中出错



w1.SendData（SendText.Text）;


客户
表格。



任何人帮我解决我的问题:-(



我是什么尝试过：



通过谷歌搜索解决我的问题，但我无法得到任何关于此错误

Error in the line

w1.SendData(SendText.Text);

in client form.

Any one Help me to solve my problem :-(

What I have tried:

Searching through googling to solve my problem but i could not get any this about this error

推荐答案

Quote：

请求的事务或请求的协议或连接状态错误

"Wrong protocol or connection state for the requested transaction or request"

因此您的连接可能处于错误的发送状态。您是否使用调试器检查实际状态？



为什么使用AxMSWinsockLib？有任何特殊原因，因为我认为您可能会发现使用 [] class。



这里也有一些很好的入门示例： []

So your connection might be in the wrong state for sending. Have you used the debugger to check the actual state?

And why using AxMSWinsockLib? Any special reason, because I think you might find it easier to use the System.Net.Sockets.Socket[^] class.

You also have some good starter examples here: Socket Code Examples[^]

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