Python Socket Listening

Question

All of the below mentioned is on windows machines using python 2.7

Hello,

I am currently attempting to listen on a socket for data send by a

Answer 1

If your in Python 3 by now and still wondering about sockets, here's a basic way of using them:

server.py

import time
import socket

# creating a socket object
s = socket.socket(socket.AF_INET,
                  socket.SOCK_STREAM)

# get local Host machine name
host = socket.gethostname() # or just use (host == '')
port = 9999

# bind to pot
s.bind((host, port))

# Que up to 5 requests
s.listen(5)

while True:
    # establish connection
    clientSocket, addr = s.accept()
    print("got a connection from %s" % str(addr))
    currentTime = time.ctime(time.time()) + "\r\n"
    clientSocket.send(currentTime.encode('ascii'))
    clientSocket.close()

client.py

import socket

# creates socket object
s = socket.socket(socket.AF_INET,
                  socket.SOCK_STREAM)

host = socket.gethostname() # or just use (host = '')
port = 9999

s.connect((host, port))

tm = s.recv(1024) # msg can only be 1024 bytes long

s.close()
print("the time we got from the server is %s" % tm.decode('ascii'))

Run server.py first, then run client.py

This is just receive and send the currentTime.

What's new in Python 3.4 sockets?

A major difference between python 2.7 sockets and python 3.4 sockets is the sending messages. you have to .encode() (usually using 'ascii' or blank as parameters/arguments) and then using .decode()

For example use .encode() to send, and use .decode() to receive.

Extra info: client/server socket tutorial