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server.py
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server.py
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'''
Simple socket server using threads
'''
import socket
import sys
from threading import *
HOST = '' # Symbolic name meaning all available interfaces
PORT = 8888 # Arbitrary non-privileged port
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print('Socket created')
# Bind socket to local host and port
try:
s.bind((HOST, PORT))
except socket.error as msg:
print('Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1])
sys.exit()
print('Socket bind complete')
# Start listening on socket
s.listen(10)
print('Socket now listening')
# Function for handling connections. This will be used to create threads
def clientthread(conn):
# Sending message to connected client
conn.send('Welcome to the server. Type something and hit enter\n') # send only takes string
# infinite loop so that function do not terminate and thread do not end.
while True:
# Receiving from client
data = conn.recv(1024)
reply = 'OK...' + data
if not data:
break
conn.sendall(reply)
# came out of loop
conn.close()
# now keep talking with the client
while 1:
# wait to accept a connection - blocking call
conn, addr = s.accept()
print('Connected with ' + addr[0] + ':' + str(addr[1]))
# start new thread takes 1st argument as a function name to be run, second is the tuple of arguments to the function.
start_new_thread(clientthread, (conn,))
s.close()