UDP and Python2.7 and 2.7 documentation gives error!

Laura Creighton lac at openend.se
Sat Jul 25 20:08:01 CEST 2015


In a message of Sat, 25 Jul 2015 19:43:45 +0200, "Stéphane Wirtel" writes:
>the bind function is for the server, not for the client.
>
>here is an example: https://wiki.python.org/moin/UdpCommunication
>
>Stephane
>On 25 Jul 2015, at 19:10, Nils wrote:
>
>> 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 = '192.168.0.90'
>> 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 )
>>
>>
>> C:\Utveckling\Counter_python>Counter_send.py
>> ('UDP target IP:', '192.168.0.90')
>> ('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 
>> context
>>
>> C:\Utveckling\Counter_python>
>>
>> So, please tell me where I am doing wrong, or is doc's wrong??
>> Nils in Uppsala

Stephane is correct, of course.  I read things too superficially, sorry.
(but if ipcpnfig doesn't find it, you will still have this problem:)

Laura


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