Hi,
I've been working on IPv6 support, and one of the strangest things
I find is BIO_get_accept_socket().
If bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED, and bind() fails
with EADDRINUSE it creates a new socket and tries to connect
to the port it tried to bind() to, and if that fails tries to
bind
On Sat, Jul 5, 2014 at 7:37 AM, Kurt Roeckx k...@roeckx.be wrote:
Does anybody have an idea why it's trying to do that, and why we
shouldn't just do SO_REUSEADDR the first time? Was there some
OS that maybe did strange things when trying to use SO_REUSEADDR
and it was already in use?
FWLIW:
On Sat, Jul 05, 2014 at 08:13:04AM -0400, Eric Covener wrote:
On Sat, Jul 5, 2014 at 7:37 AM, Kurt Roeckx k...@roeckx.be wrote:
Does anybody have an idea why it's trying to do that, and why we
shouldn't just do SO_REUSEADDR the first time? Was there some
OS that maybe did strange things
On 5/07/2014 9:12 AM, Kurt Roeckx wrote:
On Sat, Jul 05, 2014 at 08:13:04AM -0400, Eric Covener wrote:
On Sat, Jul 5, 2014 at 7:37 AM, Kurt Roeckx k...@roeckx.be wrote:
Does anybody have an idea why it's trying to do that, and why we
shouldn't just do SO_REUSEADDR the first time? Was there
On Sat, Jul 05, 2014 at 12:45:37PM -0400, Tim Hudson wrote:
On 5/07/2014 9:12 AM, Kurt Roeckx wrote:
On Sat, Jul 05, 2014 at 08:13:04AM -0400, Eric Covener wrote:
On Sat, Jul 5, 2014 at 7:37 AM, Kurt Roeckx k...@roeckx.be wrote:
Does anybody have an idea why it's trying to do that, and why
On 5/07/2014 2:14 PM, Kurt Roeckx wrote:
On Sat, Jul 05, 2014 at 12:45:37PM -0400, Tim Hudson wrote:
If you have SO_REUSEADDR set and a listener already in place you will
start a new listener
No you won't. You will get a bind() error:
socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 3
Those who forget history are doomed to re-implement it, wrongly.
SO_REUSEADDR was implemented in 4.2BSD so that a server could restart without
waiting for the various FIN_WAIT timeouts to happen.
:)
/r$
--
Principal Security Engineer
Akamai Technologies, Cambridge, MA
IM:
On Sat, Jul 05, 2014 at 02:37:49PM -0400, Tim Hudson wrote:
On 5/07/2014 2:14 PM, Kurt Roeckx wrote:
On Sat, Jul 05, 2014 at 12:45:37PM -0400, Tim Hudson wrote:
If you have SO_REUSEADDR set and a listener already in place you will
start a new listener
No you won't. You will get a bind()
Some google engineering (search) will show the the variety of
confusion that this causes in cross-platform code.
Start here for some interesting reading -
http://stackoverflow.com/questions/14388706/socket-options-so-reuseaddr-and-so-reuseport-how-do-they-differ-do-they-mean-t
You will find
On Sat, Jul 5, 2014 at 2:37 PM, Tim Hudson t...@cryptsoft.com wrote:
On 5/07/2014 2:14 PM, Kurt Roeckx wrote:
On Sat, Jul 05, 2014 at 12:45:37PM -0400, Tim Hudson wrote:
If you have SO_REUSEADDR set and a listener already in place you will
start a new listener
No you won't. You will get
On Sat, Jul 05, 2014 at 02:55:36PM -0400, Tim Hudson wrote:
Some google engineering (search) will show the the variety of
confusion that this causes in cross-platform code.
Start here for some interesting reading -
On 5 July 2014 12:37, Kurt Roeckx k...@roeckx.be wrote:
But then I found some MSDN documentation that says that Windows
allows others to hijack your socket when you've set SO_REUSEADDR
and the results are non-deterministic. They also created an
SO_EXCLUSIVEADDRUSE and I'm getting confused
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