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c#实现多线程局域网聊天系统

2019年07月18日  | 移动技术网IT编程  | 我要评论

觉得好有点帮助就顶一下啦。

socke编程，支持多客户端，多线程操作避免界面卡死。

开启socket

private void button1_click(object sender, eventargs e)
   {
     try
     {
       int port = int.parse(txt_port.text);
       string host = txt_ip.text;
       //创建终结点
       ipaddress ip = ipaddress.parse(host);
       ipendpoint ipe = new ipendpoint(ip, port);
       //创建socket并开始监听
       newsock = new socket(addressfamily.internetwork, sockettype.stream, protocoltype.tcp); //创建一个socket对象，如果用udp协议，则要用sockettyype.dgram类型的套接字
       newsock.bind(ipe);  //绑定endpoint对象
       newsock.listen(0);  //开始监听
       //为新建立的连接创建新的socket
       acceptclientthread = new thread(new threadstart(acceptclient));
       acceptclientthread.start();
       settext("开始监听");
     }
     catch (exception exp)
     {
       commonfunction.writelog(exp, exp.message);
     }
   }

监控端口，接收客户端

/// <summary>
    /// 接受客户端，可接受多个客户端同时连入，并对连入的客户端注册到客户端列表
    /// </summary>
    public void acceptclient()
    {
      try
      {
        while (true)
        {
          socket client = newsock.accept();
          ip = client.handle;
          regeistuser(client.handle, client);
          thread clientthread = new thread(new parameterizedthreadstart(receivedata));
          object o = client;
          clientthread.start(o);
        }
      }
      catch (exception exp)
      {
        commonfunction.writelog(exp, exp.message);
      }
    }

接收客户端数据并广播数据

/// <summary>
    /// 接收客户端数据并，转发到目标客户端。
    /// </summary>
    public void receivedata(object o)
    {
      try
      {
        while (true)
        {
          socket client = (socket)o;
          string recvstr = "";
          byte[] recvbytes = new byte[1024];
          int bytes;
          bytes = client.receive(recvbytes, recvbytes.length, 0); //从客户端接受消息
          recvstr = encoding.utf8.getstring(recvbytes, 0, bytes);
          sendmessage(client, recvstr);
          settext(recvstr);
          commonfunction.writeerrorlog(recvstr);
        }
      }
      catch (exception exp)
      {
        commonfunction.writelog(exp, exp.message);
      }
    }

判断是用户注册还是发送消息

/// <summary>
   /// 判断是用户注册还是发送消息
   /// </summary>
   /// <param name="p_strmessage"></param>
   public void sendmessage(socket client,string p_strmessage)
   {
     if (p_strmessage.startswith("@"))
     {
       regeistuser(p_strmessage, client);
     }
     else if (p_strmessage.startswith(">"))
     {
       
       deleteclident(p_strmessage);
     }
     else
     {
       //sendmessagetotarget(p_strmessage);
       sendallmessage(p_strmessage);
     }
   }

将socket注册为指定用户名

/// <summary>
    /// 将socket注册为指定用户名
    /// </summary>
    /// <param name="user"></param>
    /// <param name="ss"></param>
    public void regeistuser(string user, socket ss)
    {
      user = user.remove(0, 1);
      usersocketdict.add(user, ss);
      sendonemessage(ss, "欢迎" + user + "连入！");
      refreshclient();
    }

从客户端字典中移除客户端

/// <summary>
    /// 从客户端字典中移除客户端
    /// </summary>
    /// <param name="p_strmessage"></param>
    public void deleteclident(string p_strmessage)
    {
      p_strmessage = p_strmessage.remove(0, 1);
      usersocketdict.remove(p_strmessage);
      refreshclient();
    }

群发消息

/// <summary>
    /// 群发消息
    /// </summary>
    /// <param name="p_strsend"></param>
    public void sendallmessage(string p_strsend)
    {
      //messagebox.show(p_strsend);
      foreach (string item in usersocketdict.keys)
      {
        byte[] bs = encoding.utf8.getbytes(p_strsend);
        usersocketdict[item].send(bs, bs.length, 0); 
      }
    }

给文本框赋值

public delegate void settexthandler(string text);
    /// <summary>
    /// 给文本框赋值
    /// </summary>
    /// <param name="text"></param>
    private void settext(string text)
    {
      if (rich_back.invokerequired == true)
      {
        settexthandler set = new settexthandler(settext);//委托的方法参数应和settext一致 
        rich_back.invoke(set, new object[] { text }); //此方法第二参数用于传入方法,代替形参text 
      }
      else
      {
        rich_back.text += "\n" + text;
      }
 
    }

连入服务器

private void button1_click(object sender, eventargs e)
    {
      try
      {
        user = txt_name.text;
        int port = int.parse(txt_port.text);
        string host = txt_ip.text;
        //创建终结点endpoint
        ipaddress ip = ipaddress.parse(host);
        ipendpoint ipe = new ipendpoint(ip, port);  //把ip和端口转化为ipendpoint的实例
        //创建socket并连接到服务器
        socket c = new socket(addressfamily.internetwork, sockettype.stream, protocoltype.tcp);  // 创建socket
        cc = c;
        c.connect(ipe); //连接到服务器
        clientthread = new thread(new threadstart(receivedata));
        clientthread.start();
        //向服务器发送本机用户名，以便服务器注册客户端
        sendmessage("@" + txt_name.text);
      }
      catch (argumentexception ex)
      {
        console.writeline("argumentnullexception:{0}", ex);
      }
      catch (socketexception exp)
      {
        console.writeline("socketexception:{0}",exp);
      }
    }

向服务器发送消息

private void button3_click(object sender, eventargs e)
    {
      if (""==txt_target.text)
      {
        messagebox.show("未选择对话人物");
        return;
      }
      //向服务器发送信息
      string sendstr = txt_name.text + "@" + target + ":" + txt_message.text;
      sendmessage(sendstr);
      rch_back.text += "\n" + sendstr;
      txt_message.text = "";
    }

隐身

private void button2_click(object sender, eventargs e)
    {
      try
      {
        sendmessage(">" + txt_name.text);
        //cc.disconnect(true);
        //cc.shutdown(socketshutdown.both);
        //cc.close();
      }
      catch (exception exp)
      {
        commonfunction.writelog(exp, exp.message);
      }
    }

以上所述就是本文的全部内容了，希望大家能够喜欢。

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