On Tue, Feb 12, 2013 at 09:10:17PM +0400, ivan babrou wrote:
> Hi, I have a question. It's better to describe with example
> I point one.local and two.local to 127.0.0.1 and create following servers
> in config for nginx:
> server {
>   listen 80;
>   server_name one.local;
>   location / {
>     return 404;
>   }
> }
> server {
>   listen two.local:80;
>   server_name two.local;
>   location / {
>     return 403;
>   }
> }
> If I request one.local then 403 is returned. If i change listen for
> one.local to one.local:80 then 404 correctly returned, but only after
> restart, reload doesn't help (that's probably bug too).
> I expect to get 404 if i request one.local even if I listen on all
> addresses. Am I right?

127.0.0.1:80 and *:80 are two different socket addresses,
and when you connect to 127.0.0.1:80, the first one will
be used (two.local in your case). This is not specific
to nginx, it's how sockets work.

nginx by default optimizes such a config by creating only
one listening socket [1], and pessimizes by using getsockaddr()
to differentiate between multiple sockaddrs. This optimization
can be turned off by using "bind" parameter (or some other
parameters, see [1] for details). Nevertheless, 127.0.0.1:80
and *:80 are still two different addresses, and 127.0.0.1:80
is more specific than *:80.

As to "reload not working", I cannot reproduce this:

(in my config I always return 200 with "$server_name")

$ echo 'GET http://one:8000/' | nc 127.0.0.1 8000
two.local

# here config was changed to listen on 127.0.0.1:80
# instead of *:80 for one.local

# reload (kill -HUP nginx master process)

$ kill -HUP 33122
$ echo 'GET http://one:8000/' | nc 127.0.0.1 8000
one.local

[1] http://nginx.org/r/listen

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