Experimental Physics and
Industrial Control System

"Kasemir, Kay" <[email protected]> · Thu, 14 Jul 2016 21:02:27 +0000

Hi:

>Interestingly at the beginning of acceptFactory.cc are these lines.
>
>#ifndef SO_REUSEPORT               // Linux doesn't know SO_REUSEPORT
>#define SO_REUSEPORT SO_REUSEADDR
>#endif
>
>So apparently at the time procServ was written Linux did not support SO_REUSEPORT.
>
>I have 2 questions:
>
> Was there a good reason for setting this option in procServ? 

Just guessing here, but I always thought REUSEADDR is useful if a server is shut down without chance to properly clean up.
The socket would then be stuck in a wait state for some time, preventing you from restarting the server.
With REUSEADDR you can start the server back up right away.

Maybe REUSEPORT was used by accident, since it actually was a #define for REUSEADDR?

-Kay

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System