Proxying based on protocol (e.g. "ws"/"wss")?

[Daniel Griscom]

That's great information, but now I need to figure out how to 
selectively proxy to my websocket backend when $http_upgrade is 
"websocket". I see the following choices:

1) Have nginx listen at port 80, and proxy all traffic to port XXXX 
if $http_upgrade is "websocket", or port YYYY if not. Then set up 
nginx to handle http traffic at port YYYY, and have my websocket 
backend handle websocket traffic at port XXXX.

2) Investigate the much-maligned "if" statement.


... any other choices? Thoughts?


Thanks,
Dan


At 1:26 PM +0400 5/10/13, Maxim Dounin wrote:
>Hello!
>
>On Fri, May 10, 2013 at 09:14:04AM +1200, Steve Holdoway wrote:
>
>>  The scheme is available as... $scheme
>
>Yes, but WebSocket protocol uses http for handshake.  So the
>scheme will be either "http" or "https".  WebSocket requests can
>be identified based on Upgrade header, i.e. $http_upgrade
>variable.
>
>>
>>  On Thu, 2013-05-09 at 14:45 -0400, Daniel Griscom wrote:
>>  > ... bump?
>>  >
>>  > (thanks,
>>  > Dan)
>>  >
>>  >
>>  > At 9:32 AM -0400 5/8/13, Daniel Griscom wrote:
>>  > >I'm an nginx newbie, and need use use it as a front end for a
>>  > >website that also handles websocket connections. I have the
>>  > >configuration set up so that requests to a specific URI match a
>>  > >location section, which then proxies the request to the websocket
>>  > >back end server, and it all works. (Very cool.)
>>  > >
>>  > >However, I was wondering if, rather than detecting requests to a
>>  > >specific location, I could proxy all "ws://" or "wss:// requests,
>>  > >independent of the URI being requested.
>>  > >
>>  > >Is there a way to proxy all requests with a given protocol?
>>  > >
>>  > >
>>  > >Thanks,
>>  > >Dan
>>  > >
>>  > >--
>>  > >Daniel T. Griscom             griscom at suitable.com
>>  > >Suitable Systems              http://www.suitable.com/
>>  > >1 Centre Street, Suite 204    (781) 665-0053
>>  > >Wakefield, MA  01880-2400
>>  > >
>>  > >_______________________________________________
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>>  >
>>  >
>>
>>  --
>>  Steve Holdoway BSc(Hons) MNZCS <steve at greengecko.co.nz>
>>  http://www.greengecko.co.nz
>>  MSN: steve at greengecko.co.nz
>>  Skype: sholdowa
>>
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>
>--
>Maxim Dounin
>http://nginx.org/en/donation.html
>
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-- 
Daniel T. Griscom             griscom at suitable.com
Suitable Systems              http://www.suitable.com/
1 Centre Street, Suite 204    (781) 665-0053
Wakefield, MA  01880-2400