SO_REUSEADDR

[sheinb]

From what I can tell, the default for tcp acceptors is now to not reuse addresses but there is a possibility of passing this as a parameter. I can't quite get this to work, though. The examples, using the constructor with "ec" passed, work fine, but if I try the alternate, with the last argument specified as the reuse argument (1?) I get compiler errors. Is there a working example using this option (or can I set REUSEADDR another way)?

[fpagliughi]

The code that's in master/develop is exceptionally unstable at the moment as I move toward the v2.0 API. So be warned it's not meant for production applications yet, will likely change, and may have some bugs... and missing features!

That said, I appreciate any comments, suggestions, and bug reports as this comes together.

I had received complaints that the acceptor in v1 was opinionated in regard to its choices of reuse, and I always felt a little weird that I kept it in when I released the library publicly, since the original design choice was for a specific machine I was working on long ago.

The idea now, as you probably guessed. is that it doesn't chose a specific reuse strategy, but defaults to the same as the underlying library - which is none. The acceptor's open() and bind() calls now take a reuse parameter which you can use to select SO_REUSEADDR or SO_REUSEPORT, or keep the default as zero/none.

As you discovered, I forgot to add a noexcept version of the constructor which includes this parameter. Sounds like I need to add this:

acceptor(const sock_address& addr, int queSize, int reuse, error_code& ec) noexcept;

I will get that added right away, and look at updating an example or two to show how to use it.

[sheinb]

I ended up just creating the acceptor with no args and calling open on that (with the reuse arg). Seems to work as expected!On Feb 26, 2024, at 9:37 AM, Frank Pagliughi @.***> wrote: The code that's in master/develop is exceptionally unstable at the moment as I move toward the v2.0 API. So be warned it's not meant for production applications yet, will likely change, and may have some bugs... and missing features! That said, I appreciate any comments, suggestions, and bug reports as this comes together. I had received complaints that the acceptor in v1 was opinionated in regard to its choices of reuse, and I always felt a little weird that I kept it in when I released the library publicly, since the original design choice was for a specific machine I was working on long ago. The idea now, as you probably guessed. is that it doesn't chose a specific reuse strategy, but defaults to the same as the underlying library - which is none. The acceptor's open() and bind() calls now take a reuse parameter which you can use to select SO_REUSEADDR or SO_REUSEPORT, or keep the default as zero/none. As you discovered, I forgot to add a noexcept version of the constructor which includes this parameter. Sounds like I need to add this: acceptor(const sock_address& addr, int queSize, int reuse, error_code& ec) noexcept;

I will get that added right away, and look at updating an example or two to show how to use it.

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[fpagliughi]

Fix is up in the develop branch. I'll get it into master after some additional testing.