I have a simple TCP client/server program on two laptops. The server should work fine as I use "netstat -anb" and the server shows up as listening, "0.0.0.0:102", then my client connection failed, with "192.168.10.5:102".
The port should match, and for server ip address I set it to "0.0.0.0" so it should accept any connection.
When I run the program together on one laptop it works fine. I am having a hard time troubleshooting. I looked up a couple post, most of them suggested setting server ip to "0.0.0.0" which i did. And "netstat -anb" shows it is listening.
client side code on connection
private void btnConnect_Click(object sender, EventArgs e)
{
client = new Socket(AddressFamily.InterNetwork,SocketType.Stream, ProtocolType.Tcp);
IPAddress ip = Dns.GetHostByName(Dns.GetHostName()).AddressList[0];
try
{
client.Connect(new IPEndPoint(ip, port));
}
catch(Exception ex) {
MessageBox.Show("Connection failed");
MessageBox.Show(ex.ToString());
return;
}
this.Text = "Connected";
}
Server Side
private void btnListen_Click(object sender, EventArgs e)
{
Invoke((MethodInvoker)delegate {
statusLblOne.Text = "Listening..";
return;
});
// establish connection with socket.
server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
server.Bind(new IPEndPoint(0, port));
server.Listen(0);
// use <acceptStream> to accept data
acceptStream = server.Accept();
txtMessage.Enabled = true;
// allocate a new thread for this acceptstream
statusLblOne.Text = "Receiving data...";
Thread th = new Thread(receiveData);
th.Start();
// close the listener socket
server.Close();
}
I posted the code for connection at the original question. Really sort of confused right now, I searched a lot of post on stackoverflow for help, but most of them said either use a different port (0.0.0.0 should work) or server is not listening(netstat show it is listening). How should I approach this? what more info can I provide to better diagnostic
