client-server

I am writing a simple server/client socket in C. The client asks the user to input a message and the server responds by repeating the same. The problem is when I send a message from the client the server responds back by appending extra character. How do I fix this. This is my Client code while(1) { bzero(buffer, BUFSIZE); printf("Enter Message: "); scanf("%s", buffer); //send some data if(send(socket_fd, buffer, strlen(buffer), 0) <0) { fprintf(stderr,"sending failed\n"); return 1; } //receive a reply from the server if(recv(socket_fd, server_reply, BUFSIZE,0)<0) { fprintf(stderr,"failed to

I wrote a small client-server application that runs on two or more distinct machines for reboot / shutdown purposes. Since I'm relatively new to client-server apps, I took the About Delphi approach here . Shortly put, my server app awaits connections on port 7676, adds the client to a client list then does nothing (will implement the shutdown and restart procedures later). However, even if it's passive, it eats up to 90% of CPU with only two clients connected. Here's the client code, made up of an TidTCPServer and a TidAntiFreeze: type PClient = ^TClient; TClient = record PeerIP : string[15];

Scenario : I am trying to send a data (say String type) from C# сonsole application to Node.JS server through ZeroMQ. Information: Using clrzmq for c# and ZeroMQ libs for C# and Node.JS respectively I am able to perform push-pull from Node.JS, also push - pull from C#. So, one thing is confirmed that ZeroMQ - The Intelligent Transport Layer is installed on the machine (Windows 7 64-bit) Issue : I am not able to push data from C# Console app to Node.JS app (even tried vice-versa), both are on the same machine and on the same address i.e tcp://127.0.0.1:2222 Node.js code: var zmq = require(

I've been told that some torrent sites like BITLET or MININOVA allow you to download from other users, and obviously other users to download from you while you have your browser open. I would like to create something similar for a game, where: 1. User A and B are connected to a specific website 2. User A knows the IP and port of B 3. User A starts downloading some information from user B Could anyone give me some tips or keywords to start? Thanks! Your game would have to be written as a browser plugin since browsers don't support this kind of thing. It looks like BITLET uses java, which would

Currently I'm creating a server application to receive protocol-specific messages. I need to create tests to ensure that I've implemented the protocol correctly. Is this some kind of integration testing? If positive, can I make an integration testing with unit testing tools? And finally, what is the best way to create these kind of tests? If you know what the correct responses are, then here's what I'd do: Separate the class responsible for the logic of handling the protocol from the code dealing with the mechanics of the connection. Write tests, one at a time, specifying the correct response

Client blocks on the read call waiting to read n bytes. Server writes n bytes and closes the connection immediately. Can read call return negative or zero in this case if the socket gets closed before read is finished or due to some other issue? (client/server running on same linux box in this case) I am facing such a scenario but not sure how this works in TCP/IP subsystem and how to resolve it. Sever: write close Client: read close The safe way to close a socket connection is first calling shutdown to signal that you won't be writing, keep reading the data that the remote side sends, and