port of nginx http request

[Vijay Panghal]

Hi,

Is there any ngx lua api to extract the port from the http request.

e.g. in this http proxy request, api should return <port>

"GET https://<host>:<port>/uri?args HTTP/1.1"

I see ngx lua has api to return uri and host with ngx.var.uri and  ngx.var.host respectively.

Regards,

Vijay

[Yichun Zhang (agentzh)]

Hello!

On Mon, Dec 1, 2014 at 5:47 PM, Vijay Panghal wrote:
> Is there any ngx lua api to extract the port from the http request.
>
> e.g. in this http proxy request, api should return <port>
> "GET https://<host>:<port>/uri?args HTTP/1.1"
>

I think what you need is just the $server_port nginx variable:

http://nginx.org/en/docs/http/ngx_http_core_module.html#var_server_port

All the (indexed) nginx variables can be accessed from within Lua via
the ngx.var API:

https://github.com/openresty/lua-nginx-module#ngxvarvariable

Regards,
-agentzh

[James Hurst]

I think perhaps you're looking for ngx.var.server_port ?

With ngx.var.* [1] you can read/write to any Nginx variables [2], though you can only write to those which have already been defined.

[1] https://github.com/openresty/lua-nginx-module#ngxvarvariable

[2] http://nginx.org/en/docs/varindex.html

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