python socket

#Server

import socket

HOST = ''

PORT = 51234

s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)

s.bind((HOST,PORT))

s.listen(1)

conn,addr = s.accept()

print 'Connected by', addr

while True:

    data = conn.recv(1024)

    print 'received:',data

    if not data:break

    conn.sendall(data)

conn.close()

---------------------------------

#client 

import socket

HOST = '10.10.1.21'

PORT = 51234

s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)

#s.bind((HOST,PORT))

s.connect((HOST,PORT))

s.sendall("Hello, world!!!")

data = s.recv(1024)

s.close()

print 'Received',repr(data)