I followed the following tutorial (http://www.raywenderlich.com/3932/how-to-create-a-socket-based-iphone-app-and-server) and I got the code you can see below. This code allows an unlimited number of clients to connect to a chat. What I want to do is to limit this number of clients so that no more than two users can chat at the same chatroom.
In order to do so, I actually just need to know one thing: how to get a unique identifier for every client. Which can be used later on, in the function for c in self.factory.clients: c.message(msg) in order to only send the message to the client I want.
I'd appreciate any contribution!
# Import from Twisted
from twisted.internet.protocol import Factory, Protocol
from twisted.internet import reactor
# IphoneChat: our own protocol
class IphoneChat(Protocol):
def connectionMade(self):
self.factory.clients.append(self)
print "Clients are ", self.factory.clients
def connectionLost(self, reason):
self.factory.clients.remove(self)
def dataReceived(self, data):
a = data.split(':')
print a
if len(a) > 1:
command = a[0]
content = a[1]
msg = ""
if command == "iam":
self.name = content
elif command == "msg":
msg = self.name + ": " + content
for c in self.factory.clients:
c.message(msg)
def message(self, message):
self.transport.write(message + '\n')
# Factory: handles all the socket connections
factory = Factory()
factory.clients = []
factory.protocol = IphoneChat
# Reactor: listens to factory
reactor.listenTCP(80, factory)
print "Iphone Chat server started"
reactor.run();