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63 lines
1.8 KiB
63 lines
1.8 KiB
#!/usr/bin/env python3
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"""Server for multithreaded (asynchronous) chat application."""
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from socket import AF_INET, socket, SOCK_STREAM
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from threading import Thread
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def accept_incoming_connections():
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"""Sets up handling for incoming clients."""
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while True:
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client, client_address = SERVER.accept()
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print("%s:%s has connected." % client_address)
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client.send(bytes("Willkommen zum Brieftaube Messenger! Schreibe deinen Namen rein und druecke Enter!", "utf8"))
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addresses[client] = client_address
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Thread(target=handle_client, args=(client,)).start()
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def handle_client(client): # Takes client socket as argument.
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"""Handles a single client connection."""
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name = client.recv(BUFSIZ).decode("utf8")
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welcome = 'Welcome %s! If you ever want to quit, type {quit} to exit.' % name
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client.send(bytes(welcome, "utf8"))
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msg = "%s has joined the chat!" % name
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broadcast(bytes(msg, "utf8"))
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clients[client] = name
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while True:
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msg = client.recv(BUFSIZ)
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if msg != bytes("{quit}", "utf8"):
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broadcast(msg, name+": ")
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else:
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client.send(bytes("{quit}", "utf8"))
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client.close()
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del clients[client]
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broadcast(bytes("%s has left the chat." % name, "utf8"))
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break
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def broadcast(msg, prefix=""): # prefix is for name identification.
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"""Broadcasts a message to all the clients."""
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for sock in clients:
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sock.send(bytes(prefix, "utf8")+msg)
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clients = {}
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addresses = {}
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HOST = 'localhost'
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PORT = 33000
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BUFSIZ = 1024
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ADDR = (HOST, PORT)
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SERVER = socket(AF_INET, SOCK_STREAM)
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SERVER.bind(ADDR)
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if __name__ == "__main__":
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SERVER.listen(5)
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print("Waiting for connection...")
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ACCEPT_THREAD = Thread(target=accept_incoming_connections)
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ACCEPT_THREAD.start()
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ACCEPT_THREAD.join()
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SERVER.close()
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