UDPServerSocket getmessage erroneously raises LocalIPChanged about repy_v2

[choksi81]

Author: vijay
In FutureRepyAPI sendmessage call no longer raises the LocalIPChanged exception.
When tried changing the IPaddress after UDPserver is up and listening,getmessage() will raise SocketWouldBlockError which is appropriate.

[choksi81]

Author: justinc
Why is this a good exception to raise? How does the programmer know what happened? It seems really odd to raise this exception here....

[choksi81]

Author: vijay
When an IP address of the system is changed a simple TCP and UDP server listening on the system will continue to listen on the old IP address (and port), and the operating system does not appear to notify the socket or the program that its IP address changed. I observed that listening on and then disconnecting the ethernet interface would raise a SocketWouldBlockError (Repyv2).

A possible solution to make the server program learn about the changed IP address would be to run another program or script that checks if the IP address changed and notifies the server program periodically about the change. Another solution would be to include the same piece of code in the server program itself. It appears that the Shims may have this capability.

UDP:

When an IP address of the system is changed a simple UDP server continue to be binded old IP,port and server will raise a SocketWouldBlockError.