C# udp socket 如何获得远程的IP和Port

[PhilipGuo]

C# udp socket 编程，接收消息，代码如下：

private void btnReceive_Click(object sender, EventArgs e)
{
socReceive = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipendPoint = new IPEndPoint(IPAddress.Parse(ip2), port);
socReceive.Bind(ipendPoint);
thrdReceive = new Thread(new ThreadStart(Receive));
thrdReceive.Start();
}

private void Receive()
{
while (true)
{
byte[] byReceive = new byte[1024];
IPEndPoint receiver = new IPEndPoint(IPAddress.Any, 28001);
EndPoint endPoint = (EndPoint)receiver;
int rev = socReceive.ReceiveFrom(byReceive, ref endPoint);
string strReceive = System.Text.Encoding.Default.GetString(byReceive, 0, rev);
strReceive = string.Format(strTitle + strReceive, receiver.Address.ToString() + ":" + receiver.Port.ToString());
SocketAddress sa = endPoint.Serialize();
//strReceive = string.Format(strTitle + strReceive, socReceive.RemoteEndPoint.ToString());

SetText(strReceive);
}
}

接收到消息后，我想获得发送方的IP和Port，可是用receiver.Address 和 receiver.Port 不行，请问我该怎么获取呢? 谢谢！

[tcmakebest]

其实已经放到 endPoint 中了，而不是 receiver，楼主懂 ref 是干什么的吗

[WM_JAWIN]

int rev = socReceive.ReceiveFrom(byReceive, ref endPoint); 这个endPoint就是远端信息的啊, ToString()就可以了得到你想要的了

[PhilipGuo]

是，一楼是正解，谢谢各位啦！

[gomoku]

strReceive = string.Format(strTitle + strReceive, (endpoint as IPEndPoint).Address.ToString() + ":" + (endpoint as IPEndPoint).Port.ToString());

[jiaoshiyao]