websocket通讯客户端

winform.cs代码   client端代码 见下:

 这是客户端代码:

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

namespace TcpMsgClient
{
public partial class FrmClient : Form
{
public FrmClient()
{
InitializeComponent();
//关闭对文本框的非法线程操作检查
TextBox.CheckForIllegalCrossThreadCalls = false;
}
//创建 1个客户端套接字 和1个负责监听服务端请求的线程 
Socket socketClient = null;
Thread threadClient = null;

/// <summary>
/// 连接服务端事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnListenServer_Click(object sender, EventArgs e)
{
//定义一个套字节监听 包含3个参数(IP4寻址协议,流式连接,TCP协议)
socketClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//需要获取文本框中的IP地址
IPAddress ipaddress = IPAddress.Parse(this.txtIP.Text.Trim());
//将获取的ip地址和端口号绑定到网络节点endpoint上
IPEndPoint endpoint = new IPEndPoint(ipaddress, int.Parse(this.txtPort.Text.Trim()));
//这里客户端套接字连接到网络节点(服务端)用的方法是Connect 而不是Bind
try
{
socketClient.Connect(endpoint);
this.txtMsg.AppendText("客户端连接服务端成功！" + "\r\n");
this.btnListenServer.Enabled = false;
//创建一个线程 用于监听服务端发来的消息
threadClient = new Thread(RecMsg);
//将窗体线程设置为与后台同步
threadClient.IsBackground = true;
//启动线程
threadClient.Start();
}
catch (Exception ex) {
this.txtMsg.AppendText("远程服务端断开，连接失败！" + "\r\n");
} 
}

/// <summary>
/// 接收服务端发来信息的方法
/// </summary>
private void RecMsg()
{
while (true) //持续监听服务端发来的消息
{
try
{
//定义一个1M的内存缓冲区 用于临时性存储接收到的信息
byte[] arrRecMsg = new byte[1024 * 1024];
//将客户端套接字接收到的数据存入内存缓冲区, 并获取其长度
int length = socketClient.Receive(arrRecMsg);
//将套接字获取到的字节数组转换为人可以看懂的字符串
string strRecMsg = Encoding.UTF8.GetString(arrRecMsg, 0, length);
//将发送的信息追加到聊天内容文本框中
txtMsg.AppendText("服务端 " + GetCurrentTime() + "\r\n" + strRecMsg + "\r\n");
}
catch (Exception ex) {
this.txtMsg.AppendText("远程服务器已中断连接！"+"\r\n");
this.btnListenServer.Enabled = true;
break;
}
}
}

/// <summary>
/// 发送字符串信息到服务端的方法
/// </summary>
/// <param name="sendMsg">发送的字符串信息</param>
private void ClientSendMsg(string sendMsg)
{
try { 
//将输入的内容字符串转换为机器可以识别的字节数组
byte[] arrClientSendMsg = Encoding.UTF8.GetBytes(sendMsg);
//调用客户端套接字发送字节数组
socketClient.Send(arrClientSendMsg);
//将发送的信息追加到聊天内容文本框中
txtMsg.AppendText("天涯 " + GetCurrentTime() + "\r\n" + sendMsg + "\r\n");
}
catch(Exception ex){
this.txtMsg.AppendText("远程服务器已中断连接,无法发送消息！" + "\r\n");
}
}

private void btnSendMsg_Click(object sender, EventArgs e)
{
//调用ClientSendMsg方法 将文本框中输入的信息发送给服务端
ClientSendMsg(this.txtClientSendMsg.Text.Trim());
this.txtClientSendMsg.Clear();
}

private void txtClientSendMsg_KeyDown(object sender, KeyEventArgs e)
{
//当光标位于文本框时 如果用户按下了键盘上的Enter键 
if (e.KeyCode == Keys.Enter)
{
//则调用客户端向服务端发送信息的方法
ClientSendMsg(this.txtClientSendMsg.Text.Trim());
this.txtClientSendMsg.Clear();
}
}

/// <summary>
/// 获取当前系统时间的方法
/// </summary>
/// <returns>当前时间</returns>
private DateTime GetCurrentTime()
{
DateTime currentTime = new DateTime();
currentTime = DateTime.Now;
return currentTime;
}
}
}