import socket

srvsock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
srvsock.bind(('', 23000))
srvsock.listen(5)

while True:
    clisock, (rem_host, rem_port) = srvsock.accept()
    print "conection established with host %s and port %s" % (rem_host, rem_port)
    while True:
        strg = clisock.recv(20)
        if not strg:
            print 'conection closed'
            clisock.close()
            break
        clisock.send(strg)

import socket

clisock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
clisock.connect(('', 23000))
clisock.send("Hello World rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr dsadsadsa ttttttn")
while True:
    data = clisock.recv(20)
    print type(data)
    if not data:
        clisock.close()
        break
    print data

clisock.shutdown(socket.SHUT_WR)

while True:
    clisock, (rem_host, rem_port) = srvsock.accept()
    print "conection established with host %s and port %s" % (rem_host, rem_port)
    while True:
        strg = clisock.recv(20)
        print '[message from client:] %s'%strg
        clisock.send(strg)
        print 'about to close with client'
        clisock.close()
        print 'connection closed with client'
        break

clisock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
clisock.connect(('', 23000))
clisock.send("Hello World rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr dsadsadsa ttttttn")
while True:
    data = clisock.recv(20)
    print '[Message from server :]%s'%data
    print 'about to close server connection'
    clisock.close()
    print 'server connection closed'
    break