python scripting

I am trying to get some server side code on python working just a quick and dirty approach to it. This is just a prototype mind you

Currently there are two types of clients 1 desktop 1 mobile
upon first connection the desktop will send DesktopClient1
mobile will send MobileClient2

Currently I am getting this as an error and I don't know how to solve it

return getattr(self._sock,name)(*args)
socket.error: [Errno 10048] Only one usage of each socket address (protocol/network address/port) is normally permitted

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Below is the code

from socket import *
import thread, ssl
 
def handler(clientsocket, clientaddr):
    print "Accepted connection from: ", clientaddr
 
    while 1:
        data = clientsocket.recv(1024)
        i = 0 
        while (i <= 0):
            if data == "DesktopClient1":
                print data
                i = 1 + 1
                print 1
                print "Desktop Verified"
                clientsocket.send("Mobile Verified")
            elif data == "MobileClient2":
                print data
                i = 1 + 1
                print i
                print "Mobile Verified"
                clientsocket.send("Mobile Verified")
            else:
                break
            if not data:
                break
            else:
                print data
                msg = "You sent me: %s" % data
                clientsocket.send(msg)
    clientsocket.close()
 
if __name__ == "__main__":
 
    host = 'localhost'
    port = 55567
    buf = 1024
 
    addr = (host, port)
 
    serversocket = socket(AF_INET, SOCK_STREAM)
 
    serversocket.bind(addr)
 
    serversocket.listen(2)
 
    while 1:
        print "Server is listening for connections\n"
        
         
        clientsocket, clientaddr = serversocket.accept()
      
        thread.start_new_thread(handler, (clientsocket, clientaddr))
    serversocket.close()

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