C#•2y ago

❔ TCP Connect To Public iP

I Make a simple app for chat(it work in local) but dos not work for connect to public IP

22 Replies

Anchy•2y ago

what parameters are you using for the tcp listener?

C#
server side
            try
            {
                //Tls = new TcpListener(IPAddress.Parse(Tbox_Ip.Text), int.Parse(TBox_Prot.Text));
                Tls = new TcpListener(IPAddress.Any, int.Parse(TBox_Prot.Text));
                Tls.Start();
                tcp = Tls.AcceptTcpClient();
                stream = tcp.GetStream();
                data = new Data();
                backgroundWorker1.WorkerSupportsCancellation = false;
                backgroundWorker1.RunWorkerAsync();
                backgroundWorker2.WorkerSupportsCancellation = false;
                backgroundWorker2.RunWorkerAsync(); 
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

C#
server side
            try
            {
                //Tls = new TcpListener(IPAddress.Parse(Tbox_Ip.Text), int.Parse(TBox_Prot.Text));
                Tls = new TcpListener(IPAddress.Any, int.Parse(TBox_Prot.Text));
                Tls.Start();
                tcp = Tls.AcceptTcpClient();
                stream = tcp.GetStream();
                data = new Data();
                backgroundWorker1.WorkerSupportsCancellation = false;
                backgroundWorker1.RunWorkerAsync();
                backgroundWorker2.WorkerSupportsCancellation = false;
                backgroundWorker2.RunWorkerAsync(); 
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

C#
Client Side
            try
            {
                tcp = new TcpClient();
                tcp.Connect(new IPEndPoint(IPAddress.Parse(Tbox_Ip.Text), int.Parse(TBox_Prot.Text)));
                //tcp.Connect(Tbox_Ip.Text, int.Parse(TBox_Prot.Text));
                stream = tcp.GetStream();
                data = new Data();
                backgroundWorker1.WorkerSupportsCancellation = false;
                backgroundWorker1.RunWorkerAsync();
                backgroundWorker2.WorkerSupportsCancellation = false;
                backgroundWorker2.RunWorkerAsync();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

C#
Client Side
            try
            {
                tcp = new TcpClient();
                tcp.Connect(new IPEndPoint(IPAddress.Parse(Tbox_Ip.Text), int.Parse(TBox_Prot.Text)));
                //tcp.Connect(Tbox_Ip.Text, int.Parse(TBox_Prot.Text));
                stream = tcp.GetStream();
                data = new Data();
                backgroundWorker1.WorkerSupportsCancellation = false;
                backgroundWorker1.RunWorkerAsync();
                backgroundWorker2.WorkerSupportsCancellation = false;
                backgroundWorker2.RunWorkerAsync();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

king_star6368•2y ago

https://cdn.discordapp.com/attachments/497874116246896640/1058427404747558912/image.png

king_star6368•2y ago

i use public IP and turn off firewall

Anchy•2y ago

have you forwarded the port in your routers firewall

king_star6368•2y ago

yes i make them it work but for client side server side AcceptTcpClient stock Wait in AcceptTcpClient

Anchy•2y ago

start the server and use an external port checker to verify the port is indeed open

king_star6368•2y ago

if you want i show you the app

Anchy•2y ago

sure

king_star6368•2y ago

i in voice dev-vc-0

Anchy•2y ago

I cannot join at the moment on my phone

king_star6368•2y ago

oh ok

Anchy•2y ago

😄

king_star6368•2y ago

message.txt

king_star6368•2y ago

this is all code

Anchy•2y ago

right, and what port are you binding to?

king_star6368•2y ago

my router prot i make them

Anchy•2y ago

yes but what port are you trying to use

king_star6368•2y ago

i do not understand . If you mean the number 80

Anchy•2y ago

is it possible the port is in use? 80 is a widely used port for http

king_star6368•2y ago

I mean, I'll find and use an unused port from here.(https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers)

List of TCP and UDP port numbers

This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for duplex, bidirectional traffic. They usually use port numbers that match the services of the corresponding TCP or UDP implementation, if they exist....

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ TCP Connect To Public iP