[ Part 1 – Part 2 – Part 3 – Part 4 – Part 5 – Part 6 – Part 7 – Part 8 ]

We’re off to part five of our little Python control server.

I had been postponing this, but its time we implement multiple clients!

I knew we had to do this right and that it would most likely bloat the scripts as well, so it would also require breaking it down into specific modules.

So yeah, that’s what we’re doing, lets get into it!

But before that, let me give you guys some context into the code…

Modular Programming

Many times when working on a project, as it begins to expand and get into a few hundred lines of code we need to start breaking it up into modules.

For our project, so far, it seems most of the functionality is divided between server configuration and data encryption.

I figure, just for the sake of development and teaching proper methods to keep working in a program without feeling like its a labyrinth, we’ll go ahead and separate our code into a few modules.

[ Part 1 (Overview) – Part 2 – Part 3 – Part 4 – Part 5 – Part 6 – Part 7 ]

Welcome to my blog’s first tutorial series!

Ayyyyoooo guys! What’s good?

Continuing from my last post, its time to implement the server thread.

A lot of pieces are already in place to handle the server threads, so we should be able to get it done without too much hassle.

There are some minor code changes in the server script which I will only be covering in the video above, so if you’re only following the blog make sure to download the code at the end of the post and compare the changes.

Let’s write some codes!

Server Handler Code

# Server handler
# --------------------------------------------
# This function will listen for connections as daemons
# and keep connected in background.
def ServerHandler(serverIP, serverPort, clientIP):
	sh = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
	sh.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
	sh.bind((serverIP, serverPort))
	sh.listen(1)	# Listen for 1 client, each server = 1 client
	
z,b = sh.accept()
	if (z):
		print "\n[" + GetTime() + "] Connection from " + str(b)
		while True:
			msg = Receive(z)
			if len(str(msg)): print "\n[" + GetTime() + "] " + msg

There isn’t much to the server handler. Basically we fire up a socket using the supplied arguments serverIP and serverPort – this port is the one supplied by the AllocAddress() function we created in the previous part (will basically add +1 to the same port of the main server).