Python Socket Programming (Python3)
# server.py
from socket import *
# all available on host
myHost = ''
myPort = 50007
# create a TCP/IP socket object
sockobj = socket(AF_INET, SOCK_STREAM)
# Bind socket object to host/port
sockobj.bind((myHost, myPort))
# Allow 5 pending connects
sockobj.listen(5)
# always listen until process is killed
while True:
# wait for next client connect
connection, address = sockobj.accept()
# simple print out the client's address
print('Server connected by', address)
while True:
# read data from client socket
data = connection.recv(1024)
if not data: break
# send a reply line back to client
connection.send(b'Echo=>'+data)
connection.close
# Client.py
import sys
from socket import *
serverHost = 'localhost'
serverPort = 50007
# Default message to server
message = [b'Hello network world']
if len(sys.argv) > 1:
# First system argv indicate to the server host address
serverHost = sys.argv[1]
# second system argv replace the message to server
if len(sys.argv) > 2:
message = (x.encode() for x in sys.argv[2:])
# Create a TCP/IP socket object
sockobj = socket(AF_INET, SOCK_STREAM)
# Connect to host/server
sockobj.connect((serverHost, serverPort))
for line in message:
# send message to server
sockobj.send(line)
# receive response data from server
data = sockobj.recv(1024)
print('Client received:', data)
sockobj.close()
Start Server:
tracy@tracyDesktop:~/Documents/python$ python3 testServer.py
Start Client:
tracy@tracyDesktop:~/Documents/python$ python3 testClient.py
Response of server:
tracy@tracyDesktop:~/Documents/python$ python3 testWeb.py
Server connected by ('127.0.0.1', 46030)
Tracy: b'Hello network world'
// Server still waiting for next client's connect
Response of client:
tracy@tracyDesktop:~/Documents/python$ python3 testWebClient.py
Client received: b'Echo=>Hello network world'
Start Client again
tracy@tracyDesktop:~/Documents/python$ python3 testClient.py "localhost" "I'M Tracy"
Response of server:
tracy@tracyDesktop:~/Documents/python$ python3 testWeb.py
Server connected by ('127.0.0.1', 46030)
Tracy: b'Hello network world'
Server connected by ('127.0.0.1', 46044)
Tracy: b"I'M Tracy"
// Server still waiting for next client's connect
Response of client:
tracy@tracyDesktop:~/Documents/python$ python3 testWebClient.py "localhost" "I'M Tracy"
Client received: b"Echo=>I'M Tracy"
