Hello all, I’m trying to build a nginx module both with C code and Go code. The idea is to create a Go code that is compiled into a shared library and then call function of this lib from a basic nginx module C code.
Here is my handler (in C), taken from this guide: https://www.airpair.com/nginx/extending-nginx-tutorial <https://www.airpair.com/nginx/extending-nginx-tutorial> ———————————————————————————————————————— static ngx_int_t ngx_http_l_handler(ngx_http_request_t *r) { if (r->main->internal) { //already processed return NGX_DECLINED; } r->main->internal = 1; // mark as processed ngx_table_elt_t *h; h = ngx_list_push(&r->headers_out.headers); h->hash = 1; ngx_str_set(&h->key, "X-NGINX-Tutorial"); ngx_str_set(&h->value, "Hello World!"); HandleRequest(); // calling go code here :) return NGX_DECLINED; } ———————————————————————————————————————— It just inject a HTTP header. It works fine, without the “HandleRequest()” call. “HandleRequest()” is a function coming from the Go code. This function is empty and does nothing. With this call, nginx just never finishes the response and is stuck. Here are the logs: ———————————————————————————————————————— 2016/04/21 21:57:01 [debug] 33#0: epoll: fd:6 ev:0001 d:00007FC064EA9010 2016/04/21 21:57:01 [debug] 33#0: accept on 0.0.0.0:8888, ready: 0 2016/04/21 21:57:01 [debug] 33#0: posix_memalign: 00000000007426F0:512 @16 2016/04/21 21:57:01 [debug] 33#0: *1 accept: 127.0.0.1:43842 fd:3 2016/04/21 21:57:01 [debug] 33#0: *1 event timer add: 3: 60000:1461275881230 2016/04/21 21:57:01 [debug] 33#0: *1 reusable connection: 1 2016/04/21 21:57:01 [debug] 33#0: *1 epoll add event: fd:3 op:1 ev:80002001 2016/04/21 21:57:01 [debug] 33#0: timer delta: 17268 2016/04/21 21:57:01 [debug] 33#0: worker cycle 2016/04/21 21:57:01 [debug] 33#0: epoll timer: 60000 2016/04/21 21:57:01 [debug] 33#0: epoll: fd:3 ev:0001 d:00007FC064EA91B0 2016/04/21 21:57:01 [debug] 33#0: *1 http wait request handler 2016/04/21 21:57:01 [debug] 33#0: *1 malloc: 0000000000742900:1024 2016/04/21 21:57:01 [debug] 33#0: *1 recv: fd:3 78 of 1024 2016/04/21 21:57:01 [debug] 33#0: *1 reusable connection: 0 2016/04/21 21:57:01 [debug] 33#0: *1 posix_memalign: 0000000000742D10:4096 @16 2016/04/21 21:57:01 [debug] 33#0: *1 http process request line 2016/04/21 21:57:01 [debug] 33#0: *1 http request line: "GET / HTTP/1.1" 2016/04/21 21:57:01 [debug] 33#0: *1 http uri: "/" 2016/04/21 21:57:01 [debug] 33#0: *1 http args: "" 2016/04/21 21:57:01 [debug] 33#0: *1 http exten: "" 2016/04/21 21:57:01 [debug] 33#0: *1 http process request header line 2016/04/21 21:57:01 [debug] 33#0: *1 http header: "User-Agent: curl/7.35.0" 2016/04/21 21:57:01 [debug] 33#0: *1 http header: "Host: 127.0.0.1:8888" 2016/04/21 21:57:01 [debug] 33#0: *1 http header: "Accept: */*" 2016/04/21 21:57:01 [debug] 33#0: *1 http header done 2016/04/21 21:57:01 [debug] 33#0: *1 event timer del: 3: 1461275881230 2016/04/21 21:57:01 [debug] 33#0: *1 rewrite phase: 0 2016/04/21 21:57:01 [debug] 33#0: *1 test location: "/" 2016/04/21 21:57:01 [debug] 33#0: *1 using configuration "/" 2016/04/21 21:57:01 [debug] 33#0: *1 http cl:-1 max:1048576 2016/04/21 21:57:01 [debug] 33#0: *1 rewrite phase: 2 2016/04/21 21:57:01 [debug] 33#0: *1 post rewrite phase: 3 2016/04/21 21:57:01 [debug] 33#0: *1 generic phase: 4 2016/04/21 21:57:01 [debug] 33#0: *1 generic phase: 5 2016/04/21 21:57:01 [debug] 33#0: *1 access phase: 6 // stuck here nothing will happen next ... ———————————————————————————————————————— I have no warning or error during the compilation of my module. Any idea of where this behaviour could come from ? Regards, Robin
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