GPRS通信问题

[一条路坚持下去]

Thread threadWatch = null; //负责监听客户端的线程
Socket socketWatch = null; //负责监听客户端的套接字

private void btn_connect_Click(object sender, EventArgs e)
{


if (string.IsNullOrEmpty(textBox_ip.Text) || string.IsNullOrEmpty(textBox_port.Text))
{
MessageBox.Show("IP或端口不能为空", "提示");
return;
}
else
{
//定义一个套接字用于监听客户端发来的信息 包含3个参数(IP4寻址协议,流式连接,TCP协议)
socketWatch = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//服务端发送信息 需要1个IP地址和端口号
IPAddress ipaddress = IPAddress.Parse(textBox_ip.Text.Trim()); //获取文本框输入的IP地址
//将IP地址和端口号绑定到网络节点endpoint上
IPEndPoint endpoint = new IPEndPoint(ipaddress, int.Parse(textBox_port.Text.Trim())); //获取文本框上输入的端口号
//监听绑定的网络节点
socketWatch.Bind(endpoint);
//将套接字的监听队列长度限制为20
socketWatch.Listen(20);
//创建一个监听线程
threadWatch = new Thread(WatchConnecting);
//将窗体线程设置为与后台同步
threadWatch.IsBackground = true;
//启动线程
threadWatch.Start();
//启动线程后 txtMsg文本框显示相应提示
txtMsg.AppendText("服务已启动！！开始监听客户端信息\r\n");
btn_connect.Enabled = false;
textBox_ip.Enabled = false;
textBox_port.Enabled = false;
button1.Enabled = true;
btn_send.Enabled = true;
}
}
//创建一个负责和客户端通信的套接字
Socket socConnection = null;
/// <summary>
/// 监听客户端发来的请求
/// </summary>
///
IPAddress clientIP; //访问客户端的IP
int clientPort; //访问客户端的端口号
string clientName = null; //创建访问客户端的名字
private void WatchConnecting()
{
while (true) //持续不断监听客户端发来的请求
{
socConnection = socketWatch.Accept();
txtMsg.AppendText("客户端连接成功" + "\r\n");
txtMsg.AppendText("IP: " + clientIP + " Port: " + clientPort + " 的客户端与您连接成功\r\n");
//创建一个通信线程
ParameterizedThreadStart pts = new ParameterizedThreadStart(ServerRecMsg);
Thread thr = new Thread(pts);
thr.IsBackground = true;
//启动线程
thr.Start(socConnection);

//获取访问客户端的IP
clientIP = (socConnection.RemoteEndPoint as IPEndPoint).Address;
//获取访问客户端的Port
clientPort = (socConnection.RemoteEndPoint as IPEndPoint).Port;
//创建访问客户端的唯一标识 由IP和端口号组成
clientName = "IP地址: " + clientIP + " 端口: " + clientPort;
User.Items.Add(clientName); //在客户端列表添加该访问客户端的唯一标识
}
}


/// 接收客户端发来的信息
/// </summary>
/// <param name="socketClientPara">客户端套接字对象</param>
private void ServerRecMsg(object socketClientPara)
{
Socket socketServer = socketClientPara as Socket;
while (true)
{
//创建一个内存缓冲区 其大小为1024*1024字节 即1M
byte[] arrServerRecMsg = new byte[1024 * 1024];
try
{
//将接收到的信息存入到内存缓冲区,并返回其字节数组的长度
int length = socketServer.Receive(arrServerRecMsg);
//将机器接受到的字节数组转换为人可以读懂的字符串
string strSRecMsg = Encoding.UTF8.GetString(arrServerRecMsg, 0, length);
//将发送的字符串信息附加到文本框txtMsg上
txtMsg.AppendText("客户端:" + GetCurrentTime() + "\r\n" + strSRecMsg + "\r\n");
}
catch (SocketException ex)
{
txtMsg.AppendText("IP: " + clientIP + " Port: " + clientPort + " 的客户端已经与您断开连接\r\n");
dicSocket.Remove(clientName);//移除相应远程客户端的套接字
User.Items.Remove(clientName);//从客户端列表中移除该客户端
break;
}
}
}
//用于保存所有通信客户端的Socket
Dictionary<string, Socket> dicSocket = new Dictionary<string, Socket>();
public void ServerSendMsg(string sendMsg)
{

//将输入的字符串转换成 机器可以识别的字节数组
byte[] arrSendMsg = Encoding.UTF8.GetBytes(sendMsg);
//向客户端发送字节数组信息
socConnection.Send(arrSendMsg);
txtMsg.AppendText("服务器端:" + GetCurrentTime() + "\r\n" + sendMsg + "\r\n");

}
在listview中列出了监测到所有gprs地址，如何实现广播功能呢？（是端口映射还是轮循来实现）哪个高手可以给补充一下（写出代码最好）