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47
client.py
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47
client.py
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import socket
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import threading
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# Server-Informationen
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HOST = '127.0.0.1'
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PORT = 12345
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nickname = "michi"
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def receive_message(sock):
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""" Funktion für das Empfangen von Nachrichten """
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while True:
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try:
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# Empfange die Nachricht des Servers
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msg = sock.recv(1024).decode('utf-8')
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if not msg:
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break
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print(f"\r>>{msg}\n", end='', flush=True)
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except:
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# Schließe die Verbindung, wenn ein Fehler auftritt
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print("Verbindung getrennt.")
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break
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def start_client():
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""" Funktion für das Starten des Clients """
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# Erstelle den Client-Socket und verbinde ihn mit dem Server
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client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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client.connect((HOST, PORT))
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# Starte einen Thread für das Empfangen von Nachrichten
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threading.Thread(target=receive_message, args=(client,)).start()
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client.sendall(nickname.encode('utf-8'))
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try:
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while True:
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# Lese die Eingabe des Benutzers und sende sie an den Server
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msg = input(">> ")
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if msg.lower() == "exit":
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break
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client.sendall(msg.encode('utf-8'))
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except KeyboardInterrupt:
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pass
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finally:
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# Schließe den Client-Socket
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client.close()
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if __name__ == '__main__':
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start_client()
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75
server.py
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75
server.py
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import socket
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import threading
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# Server-Informationen
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HOST = '127.0.0.1'
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PORT = 12345
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# Erstelle den Server-Socket
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server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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server.bind((HOST, PORT))
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nicks = {}
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# Liste für die Verfolgung der Clients
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clients = []
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def handle_client(conn, addr):
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""" Funktion für die Behandlung eines einzelnen Clients """
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# Füge den Client zur Liste hinzu
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clients.append(conn)
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#Nick_given = False
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#while Nick_given == True:
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# try:
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# # Empfange den nickname des Clients
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# msg = conn.recv(1024).decode('utf-8')
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# if not msg:
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# break
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# print(clients)
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# print(f"Nick von {addr}: {msg}")
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# global nicks
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# nicks[addr] = msg
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# Nick_given = True
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# except:
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# # Entferne den Client aus der Liste und schließe die Verbindung
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# print("Client getrennt:", addr)
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# clients.remove(conn)
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# conn.close()
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# break
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print("Neuer Client verbunden:", addr)#,nicks[addr])
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while True:
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try:
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# Empfange die Nachricht des Clients
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msg = conn.recv(1024).decode('utf-8')
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if not msg:
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break
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print(clients)
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print(f"Nachricht von {addr}: {msg}")
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# Sende die Nachricht an alle anderen Clients
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for client in clients:
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if client != conn:
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client.sendall(msg.encode('utf-8'))
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except:
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# Entferne den Client aus der Liste und schließe die Verbindung
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print("Client getrennt:", addr)
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clients.remove(conn)
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conn.close()
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break
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def start_server():
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""" Funktion für das Starten des Servers """
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server.listen()
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print(f'Server läuft auf {HOST}:{PORT}')
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while True:
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# Warte auf eingehende Verbindungen
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conn, addr = server.accept()
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# Starte einen neuen Thread für jeden Client
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threading.Thread(target=handle_client, args=(conn, addr)).start()
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if __name__ == '__main__':
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try:
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start_server()
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except KeyboardInterrupt:
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print("Server wird heruntergefahren.")
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server.close()
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