So i am trying to make a message application with tkinter gui. I have a client and a server, which is currently just running locally.
So i i generate a fernet key which i first send to the server, so we can both encrypt with the same key (i know this probably should be encrypted when i send it).
The first time i call the client.connect() it works fine, gets the key and checks if the roomId exists. If it does not it spits out an error and all is fine. However if I try again, calling client.connect() the fernet key which the server receives gets all messed up.
First time
Client
b'Nwb0wki6ydmeZgEyMqo0ZFvvPm_grlpnYicjhCMZTMg='
b'Nwb0wki6ydmeZgEyMqo0ZFvvPm_grlpnYicjhCMZTMg='
b'Nwb0wki6ydmeZgEyMqo0ZFvvPm_grlpnYicjhCMZTMg='
Server
b'Nwb0wki6ydmeZgEyMqo0ZFvvPm_grlpnYicjhCMZTMg='
As you can see the first time it works fine
Second time
Client
b'tq2uBDFfpV0vAmDNpJKmA-87ElJqa5Unsme7OGCTG80='
b'tq2uBDFfpV0vAmDNpJKmA-87ElJqa5Unsme7OGCTG80='
b'tq2uBDFfpV0vAmDNpJKmA-87ElJqa5Unsme7OGCTG80='
Server
b'tq2uBDFfpV0vAmDNpJKmA-87ElJqa5Unsme7OGCTG80=gAAAAABfmnNNS9XplQlqNf3-7vlEgk-VAHsq6EIJaWTUhLyaCqIictM7v5rnh6_dMhKKNvGc3otMi08SEhtmgfyK3KSXD6SckOk9abFGW6-KS36b3jtThBdmid1EXxCmu7B0IgmulmZF_K0VhKAiOEty74nqZ_YLkDzfaaKHzXnPsfx-39ssKSA='
Even though i am calling the exact same method, and its making a new connecting, and it seems to be sending a perfectly fine key, the server recievieves something totally different. And yes i only have one client connected to the server
Client connection function
def connect(self, username="joe", roomId="12346", host="127.0.0.1", port="9001"):
self.host = host
self.port = int(port)
self.key = fernet.Fernet.generate_key()
print(self.key)
self.username = username
try:
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.connect((self.host, self.port))
self.connected = True
print(self.key)
self.sock.send(self.key)
print(self.key)
print("sendte key")
self.sock.sendall(Encryption().encryptMsg(self.username, self.key))
print("sendte username")
self.sock.sendall(Encryption().encryptMsg(roomId, self.key))
print(roomId)
print("sendte roomId")
msg = self.sock.recv(1024)
msg = Encryption().decryptMsg(msg, self.key)
print(msg)
if msg["msg"] == False:
self.disconnect()
return False
self.clientId, self.roomId = msg["msg"]
self.thread = threading.Thread(target=self.listen)
self.thread.start()
print("Started listening")
print(self.username, self.roomId, self.clientId)
return True
except Exception as e:
print(e)
self.disconnect()
return False
def disconnect(self):
print("lukker sock")
self.sock.shutdown(socket.SHUT_RDWR)
Server receiving function
def run(self):
self.sock.bind((self.host, self.port))
self.sock.listen(self.listenInt)
while True:
# try:
conn, addr = self.sock.accept()
print("Got connection from: ", addr)
newCon = threading.Thread(
target=self.handleConnection, args=(conn, addr))
newCon.start()
self.sock.close()
def handleConnection(self, conn, addr):
print("startet handler")
key = conn.recv(1024)
print("fikk key")
print(key)
username = Encryption().decryptMsg(conn.recv(1024), key)["msg"]
print("fikk username")
print(username)
roomId = int(Encryption().decryptMsg(conn.recv(1024), key)["msg"])
print("fikk roomid")
print(roomId)
print(self.rooms)
if roomId == 0:
room = Room(self)
roomId = room.roomId
self.rooms[roomId] = room
print("lagde rom")
elif roomId not in self.rooms:
print("finner ikke rom")
conn.sendall(Encryption().encryptMsg(False, key))
print("sendte false")
conn.close()
return
room = self.rooms[roomId]
newCon = threading.Thread(
target=serverConnection, args=(conn, addr, key, room, username))
newCon.start()
