UDP and Python2.7 and 2.7 documentation gives error!

Laura Creighton lac at openend.se
Sat Jul 25 19:56:54 CEST 2015

In a message of Sat, 25 Jul 2015 19:10:53 +0200, Nils writes:
>UDP and Python2.7 and 2.7 documentation gives error!
>I am trying to send UDP messages from one PC to another, using P2.7.
>BUT I get an error I do not understand, this as I am following the doc's
>for Python2.7! Listing of the script with error result following:
>import socket
>UDP_IP = ''
>UDP_PORT = 45121
>msg = '7654321'
>print ("UDP target IP:", UDP_IP)
>print ("UDP target port:", UDP_PORT)
>print ("message:", msg)
>sock = socket.socket(socket.AF_INET, # Internet
>                     socket.SOCK_DGRAM) # UDP
>sock.bind((UDP_IP, UDP_PORT))
>sock.send( msg )
>('UDP target IP:', '')
>('UDP target port:', 45121)
>('message:', '7654321')
>Traceback (most recent call last):
>  File "C:\Utveckling\Counter_python\Counter_send.py", line 13, in <module>
>    sock.bind((UDP_IP, UDP_PORT))
>  File "C:\Python27\lib\socket.py", line 228, in meth
>    return getattr(self._sock,name)(*args)
>socket.error: [Errno 10049] The requested address is not valid in its
>So, please tell me where I am doing wrong, or is doc's wrong??
>Nils in Uppsala

Does ipconfig report that is something you can bind to?
If not, that is your problem.  It needs to be something on localhost
that you can bind to.


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