can I capture full HTTP request/response in OpenResty?

eric_3c5e · 2019-11-27T02:30:50+00:00

Is it possible to access the socket after the preread phase without proxypreread_by_lua_block {local socket = ngx.req.socket(true)local data, err = socket:pe...

can I capture full HTTP request/response in OpenResty?

eric_3c5e

Hi Folks,

I'd like to use OpenResty as "Front-end proxy" (a.k.a forward proxy) for my applications who consumes 3rd party SOAP/REST API so I can record the full outgoing requests/responses associated with some computed metrics for audit/troubleshooting purposes.

My first option would be to have use a content_by_lua block using an resty.http client to forward the incoming http request to the external service and doing the log+metric computations on this lua handler.

This approach however makes me feel that I'm reinventing the wheel given that nginx/openresty can be used as basic forward proxy, but I couldn't figure out how to intercept the req/res so I can compute the metrics and log the req/res HTTP headers & body.

What you guys recommend? should I pursue the first strategy or is it possible to use the second one?

Thanks in advance for any input and directions.

Regards,

Eric.