Hello, On Thu, Nov 13, 2014 at 5:24 PM, Yichun Zhang (agentzh) <[email protected]> wrote:
> Hello! > > On Wed, Nov 12, 2014 at 12:20 PM, Guido Accardo wrote: > > > > Here, prod response is sent immediately as I want and dev receives the > > traffic but the connection is closed the I got a Broken Pipe (which makes > > sense). > > > > For this error, maybe you should configure > > proxy_ignore_client_abort on; > > for your dev location with proxy_pass. > > But using ngx.eof() for this will still introduce extra delay for the > subsequent requests on the current downstream connection when HTTP > keepalive or HTTP pipelining is enabled. > Using "proxy_ignore_client_abort on;" as you suggested worked for me. >From the doc of proxy_ignore_client_abort: " ... Determines whether the connection with a proxied server should be closed when a client closes the connection without waiting for a response ..." So basically I'm discarding dev's responses ? > > > > > Is there a way to do capture calls in a asynchronous mode or to achieve > this > > in other way? > > > > The recommended way is to use cosocket-based http library like Brian > Akins's lua-resty-http-simple [1] (instead of subrequests and > ngx_proxy) in a 0-delay timer created by ngx.timer.at() [2] (instead > of the ngx.eof hack). > I'm going for this solution, the ugly hack will be my second option but this seems great. > > BTW, it's recommended to join the openresty-en mailing list [3] for > such ngx_lua related questions that way you may get more responses and > get responses sooner. > I'll definitely do it! > > For your very use case, maybe lower level tools like tcpcopy [4] is a > better fit? Not sure though :) > I gave it a try, also https://www.npmjs.org/package/duplicator and traffic mirroring with iptables TEE module, but anyway the library that you suggested. Thank you, Best Regards, > > Regards, > -agentzh > > [1] https://github.com/bakins/lua-resty-http-simple > [2] https://github.com/openresty/lua-nginx-module#ngxtimerat > [3] https://groups.google.com/group/openresty-en > [4] https://github.com/session-replay-tools/tcpcopy > > _______________________________________________ > nginx mailing list > [email protected] > http://mailman.nginx.org/mailman/listinfo/nginx > -- --- Guido Accardo
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