When using the Net.Sockets.TcpListener, what is the best way to handle incoming connections (.AcceptSocket) in seperate threads? The idea is to start a new thread when a new incoming connection is accepted, while the tcplistener then stays available for further incoming connections (and for every new incoming connection a new thread is ...
In my application, I currently stop listening when AcceptTcpClient (or EndAcceptTcpClient) throws an exception. Typically exceptions are thrown when I stop the listener (socket error 10004) or when I disconnect the network adapter. try { while (true) { TcpClient client = listener.AcceptTcpClient(); // omitted: st...
I am currently using TcpListener to address incoming connections, each of which are given a thread for handling the communication and then shutdown that single connection. Code looks as follows: TcpListener listener = new TcpListener(IPAddress.Any, Port); System.Console.WriteLine("Server Initialized, listening for incoming connections")...
Hi, We have a simple piece of legacy software with which we need to communicate using TCP/IP over port 15001. We need to listen on port 15001 for the legacy software to make a connection and then read whatever it sends us. We have tested this solution accross the internet and it works just fine. If however we test the same solution acr...
Hello, I'm working on a simple hello world TCP/IP client server app in C# and am unable to get my client to connect. Can anyone offer any additional troubleshooting steps? I'm starting to run out of ideas... Here are the relevant sections of code: server: Console.Out.WriteLine("About to bind address"); IPAddress ipAd = IPAddress.Pa...
I am creating a Windows Service in .NET to which N number of client can connect. The service starts a TCP listener and accepts the client connections. The problem I am facing is that I can only open 10 connections to this service. The listener::AcceptTcpClient() method accepts only 10 connection and throws an exception for 11th one. The ...
I'm using visual studio to program this small TcpServer. It's really specific. The server listens to port 1234 and is located on IP 127.0.0.1 Our teachers gave us a program that tries to connect to that port on that IP when you click "connect". It's working for everyone else, so it must be a coding error on my part. When I click connec...
How do I write a windows service in c# that listens for tcp connections and processes these connections? The problem is that I want a better method than to "block" in the main thread e.g. while(true) ; I can start the listener on another thread but the main thread needs to block to prevent the application from exiting (and the ser...
When I run the following code: struct sockaddr_in sin; int addrlen; addrlen=sizeof(sin); memset(&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_addr.s_addr=inet_addr("123.456.789.112"); sin.sin_port=htons(0); // so that the kernel reserves a unique port for us sd_server = socket(PF_INET, SOCK_STREAM, 0); bind(...
I have a client/server style application which communicates using WCF which all works great. One function of the application is to get files from client machines onto the server (Central Control). The Central Control requests a list of file in a specified folder on the client and opens up a port using sockets for the clients to connect ...
For server side programming I use the listen function as: int listen(int sockfd, int backlog); I understand that the backlog should be less than or equal to the somaxconn set on the host system where I would run my server program. If I use SOMAXCONN as the backlog, it will be equivalent to hard-coding it to the value of SOMAXCONN that ...
How can I detect when a client disconnects from the TcpListener ? Each of my clients is handled in a separate thread. ...
We need to talk to another system that wants to communicate to us via raw tcp/ip socket communication. What would be the appropriate .Net object, if any, to use for this? If you know of a 3rd party component, open source component, etc., that you think is better to use, please feel free to mention that as well. ...
How to Free a Port in .NET used by TCPListener.... after a TCPListener has recieved a required thing from ...
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Net; using System.Net.Sockets; using System.IO; namespace PDMS_TCG { public partial class FormHost : Form { public FormHost()...
I am using creating a server/client style program, and it uses tcp connections. Now, the server is like this, but it will only listen until it has received its one request. My issue lies in the fact that it only listens till it receives the one message, then closes. The bigger issue, though, is the lag, it will not let me interact with ...
I'm trying to do the following: listen on some port for loopback connections only, and then start listening on any IP address. Here is the code: TcpListener l1 = new TcpListener(new IPEndPoint(IPAddress.Loopback, 12345)); l1.Start(); Socket s = l1.AcceptSocket(); Console.ReadKey(); //s.Close(); l1.Stop(); TcpListener l2 = new TcpListene...
In C# I am using the asynchronous versions of TcpListener/TcpClient, and I am chaining these via the callback method so that another Accept/Read is posted when the callback completes. Here is an example (untested): public void Start() { TcpListener listener = new TcpListener(IPAddress.Any, 3000); listener.Start()...
I have a device with a network address of 192.168.xxx.xxx port xxxx. This is a valid address on my network. I have tried to use TCPListener to make the connection for the server but receive the error "Error..... System.Net.Sockets.SocketException: The requested address is not vali d in its context at System.Net.Sockets.Socket.DoBin...
I've read an example of a Tcp Echo Server and some things are unclear to me. TcpClient client = null; NetworkStream netStream = null; try { client = listener.AcceptTcpClient(); netStream = client.GetStream(); int totalBytesEchoed = 0; while ((bytesRcvd = netStream.Read(rcvBuffer, 0, rcvBuffer.Length)) > 0) { netStream.Wri...