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Re: [lwip-devel] SO_REUSEPORT removed on master branch

From: Joel Cunningham
Subject: Re: [lwip-devel] SO_REUSEPORT removed on master branch
Date: Thu, 16 Jul 2015 14:17:45 +0000 (GMT)


Thanks for the follow up.  I could go either way on the removing the define.  I've seen other network code besides my application that checks for SO_REUSEPORT with an #ifdef, so maybe that's a somewhat standard approach, but I agree the other socket options that are defined in LwIP (but not implemented) do set a precedent for leaving it.

For now, my application already has LwIP specific, so I can just adjust it to only use SO_REUSEADDR


On Jul 16, 2015, at 03:17 AM, Simon Goldschmidt <address@hidden> wrote:

Joel Cunningham wrote:
My question is, was it intentional to remove SO_REUSEPORT? If so, maybe we should
remove the define for SO_REUSEPORT as well

Yes, it was intentional, as SO_REUSEADDR is a standard thing whereas SO_REUSEPORT is a linux thing.
SO_REUSEPORT was implemeneted on socket layer but did nothing on IP layer. Therefore, I removed it on socket layer as well.
So you should now at least be informed that setsockopt(SO_REUSEPORT) fails.

We could remove the define to make people aware we don't support it, but there are other unimplemented sockopt defines as well...


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