My Python socket server can only receive one message from the client

Question

Hi i got a problem with my socket server or the client the problem is i can only send one message from the client to the server then the server stops receiving for some reason i want it to receive more then one.

Server.py

import socket 
host = ''
port = 1010
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
s.bind((host, port)) 
s.listen(1) 
conn, addr = s.accept() 
print ("Connection from", addr)
while True: 
 databytes = conn.recv(1024)
 if not databytes:
 break
 data = databytes.decode('utf-8')
 print("Recieved: "+(data))
 if data == "dodo": 
 print("hejhej")
 if data == "did":
 response = ("Command recived") 
 conn.sendall(response.encode('utf-8'))
conn.close()

client.py

import socket 
host = '127.0.0.1'
port = 1010 
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
s.connect((host, port)) 
print("Connected to "+(host)+" on port "+str(port)) 
initialMessage = input("Send: ") 
s.sendall(initialMessage.encode('utf-8'))
while True:
 response = input("Send: ") 
 if response == "exit": 
 s.sendall(response.encode('utf-8')) 
s.close()

• mguijarr: The server is sending only after the while loop, there is an indentation error: move conn.sendall(response.encode[...]1 space right...
• Iron Fist: Please, FIX your indentation so we know where the problem resides...
• Daniel darko: Ok i have fixed the indentation problem now i think. but i still got the same output as described in the question. Which is i can only send one message from the client to the server.
• jfs: put everything after s.listen(1) into a while loop.
• Daniel darko: It dident work with putting everything after s.listen(1) into a while loop. I think the problem may lie in the loop its self either in the client or the server. im suspecting that it breaks after the first message is sent from the client.

Answer 1

There is nothing wrong with your code, but the LOGIC of it is wrong, in the Client.py file and particularly in this loop:

while True:
 response = input("Send: ") 
 if response == "exit": 
 s.sendall(response.encode('utf-8')) 

This will not send to your Server side anything but string exit because of this:

if response == "exit":

So you are asking your Client.py script to only send anything the user inputs matching the string exit otherwise it will not send.

It will send anything at the beginning before this while loop since you wrote:

initialMessage = input("Send: ") 
s.sendall(initialMessage.encode('utf-8'))

But after you are inside that while loop then you locked the s.sendall to only send exit string

You have to clean up your code logic.

• Daniel darko: Tnx for your answer. I have already figured this out. The code is working.