I am writing an update to a game I have written in python, and I am currently adding server support. I can't show you the main code (for the client), as it is hundreds of lines long. However, what I can do is show you this snippet of code from lines 34 to 47:
s = "" serverMode = "noServer" def getserver(server_ip,server_num): global s, serverMode try: s = socket.socket(socket.AF_INET,socket.SOCK_STREAM) s.settimeout(2) s.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1) s.connect((server_ip,server_num)) print "connected to " + str(server_ip) serverMode = "activeServer" except: easygui.msgbox("The server is not running or does not exist.") s = None
the 's' variable is where the server socket is kept. the 'serverMode' holds the information on wether the game is connected to an active server or not, so that if so, it can be constantly checking for updates in the code. Here is the server code, which is significantly shorter than the main code:
import socket, signal print "[SERVER INFO] hosted at " + str(socket.gethostname()) print "[SERVER INFO] loading server..." def doStuff(): pass serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) serversocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) serversocket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1) #socket.fork() serversocket.bind((socket.gethostname(), 80)) serversocket.listen(5); print "[SERVER INFO] server started." clients =  running = True while running: (clientsocket, address) = serversocket.accept() if not [clientsocket, address] in clients: clients.append([clientsocket, address]) data = clientsocket.recv(2048) if not data: pass elif data.startswith("[SERVER INFO]"): print data elif data == "disconnect": pass elif data.startswith("[BLOCK PLACEMENT]"): blocktype = data.split(' ') loc = [data.split(' '), data.split(' ')] for client in clients: try: client.send(bytes("[BLOCK] " + str(loc) + "," + str(loc) + "," + blocktype)) except: pass elif data.startswith("[CHAT MESSAGE]"): for client in clients: try: client.send(bytes(data)) except: pass clientsocket.sendall(bytes("0,0,wood.png\n20,20,wood.png")) serversocket.shutdown(0) print "[SERVER INFO] server shutdown correctly." raw_input()
As I mentioned, the client is constantly checking for server updates. It uses the recv function in sockets. So because of this, it runs extremely slow. I have looked at online tutorials on how to fix similar things, but nothing seems to work for me. Nevertheless, here is the code that checks for updates:
if serverMode == "activeServer": #s.setsocketopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) try: recvbuff = 100 rx_bufftmp = s.recv(recvbuff) rx_bufftmplen = len(rx_bufftmp) recvbuff = max(recvbuff, rx_bufftmplen) except: data = False if not data == False and data.startswith('[BLOCK]'): blk = rx_bufftmp.split(' ').split(',') blx = blk bly = blk bln = blk bls.append(Block(bln, [int(blx), int(bly)]))
The code runs in the pygame mainloop. So, since I was not able to find any ways to optimize performance, may there be a way instead to only grab data if there is incoming data? Maybe also some other ways to optimize performance as well?
I am running a 32 bit version of python 2.7 on a 64 bit installation of Windows 10.