I study network programming and would like to write a simple command-line chat in Python.
I'm wondering how make receving constant along with inputing available for sending at any time.
As you see, this client can do only one job at a time:
from socket import *
HOST = 'localhost'
PORT = 21567
BUFSIZE = 1024
ADDR = (HOST, PORT)
tcpCliSock = socket(AF_INET, SOCK_STREAM)
tcpCliSock.connect(ADDR)
while 1:
data = raw_input('> ')
if not data: break
tcpCliSock.send(data)
data = tcpCliSock.recv(BUFSIZE)
if not data: break
print data
tcpCliSock.close()
So if another client sends a message, this client will only receive it after sending a message too. I bet you understand me. I have googled for the matter and found out many interesting things such as asynchronous I/O, threading, non-blocking synchronization, concurrent programming and so on. I have also installed the twisted package. In brief, I've been learning all these things but yet haven't found what I was looking for. (Of course, I will keep trying and trying until I get to the point.)
So, my question is how make that? =)