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Why C++ though? As I mentioned earlier, sockets are merely providing an interface for network programming and have nothing to do with programming language used for implementation. Sockets provide sufficiency and transparency while causing almost no communication overhead. Generally speaking, sockets are providing a way for two processes or programs to communicate over the network.

But where are the sockets? Let me refer you back to the line where I said sockets are the “base” and so they provide the programming interface for these protocols to work on. For example, when you open your browser and search for something, you’re merely requesting a server for some information over HTTP (not to forget HTTP is nothing but an application using TCP/IP service). The following analogy will help you understand the model.īut how does that transfer of information take place? Well, that involves networking services from transport layer often referred to as TCP/IP (Transport Control Protocol/Internet Protocol).

Server is supposed to serve the information requested or the required services by the client. Let alone the technology for the moment, in most cases, it’s literally just a client-server model working. A socket is fundamentally the most basic technology of this network programming. That’s where network programming models starts to appear. Ever since the internet came into existence, it shifted the paradigm to internet-enabled applications. "While" checks the status, decides whether to move on or resend that piece.Socket programming is nothing of a new concept for programmers.

If it times out, send an 'e' and then hop in the loop, resend the current piece and recv the next status update. The algorithm I'm going for is send a piece of the file, if it receives it, send an 's' and continue reading and send the send piece. I only put them in the client side to isolate my problem.

The packetErrorSends are similar to send but they randomly drop packets. Everything's working except for binary files, probably because they're pretty big and would expect timeouts. I'm having difficulties with this project.