proxy_http_version with dynamic backends

christopherwhitten · 2014-03-07T02:58:04+00:00

HelloIt worked perfectly. I just had to move some if statements inside Lua code which actually was much simpler that using nginx if statements. Thanks a...

proxy_http_version with dynamic backends

christopherwhitten

Hello,

I am using an Openresty Nginx to proxy requests back to dynamic backends that the server has no discrete knowledge of. Because the backends are unknown to this Nginx server at the time of server-start, I am unable to use the upstream module, and lose the ability to set the necessary keepalive policys for HTTP 1.1 when passing requests to these backends. What can I do to set HTTP 1.1 and a keepalive value without using the upstream module?

agentzh

Hello!

On Thu, Mar 6, 2014 at 10:58 AM, Chris Whitten wrote:
> Because the backends are
> unknown to this Nginx server at the time of server-start, I am unable to use
> the upstream module, and lose the ability to set the necessary keepalive
> policys for HTTP 1.1 when passing requests to these backends.  What can I do
> to set HTTP 1.1 and a keepalive value without using the upstream module?
>

Well, you can try out one of those lua-resty-http libraries out there
with the ngx_lua module. For example, James Hurst's version:

    https://github.com/pintsized/lua-resty-http

Regards,
-agentzh

christopherwhitten

According to the docs

http://nginx.org/en/docs/http/ngx_http_upstream_module.html#keepalive

Once you set proxy_http_version 1.1 the default 'keepalive' setting is '--'. What does that mean?

On Thursday, March 6, 2014 12:08:31 PM UTC-8, agentzh wrote:

Hello!

On Thu, Mar 6, 2014 at 10:58 AM, Chris Whitten wrote:
> Because the backends are
> unknown to this Nginx server at the time of server-start, I am unable to use
> the upstream module, and lose the ability to set the necessary keepalive
> policys for HTTP 1.1 when passing requests to these backends. What can I do
> to set HTTP 1.1 and a keepalive value without using the upstream module?
>

Well, you can try out one of those lua-resty-http libraries out there
with the ngx_lua module. For example, James Hurst's version:

https://github.com/pintsized/lua-resty-http

Regards,
-agentzh