记一次GDB调试nginx运行流程

简介

在nginx源代码中有大量的任务被加到红黑树中，或者通过注册回调函数来实现，通过阅读源码很难发现和跟踪执行流程。但是通过调试nginx代码可以很清晰的跟踪nginx执行的流程，可以很直观的发现一次http请求响应完整处理生命周期。

nginx modules顺序调试： 1: m = 16 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0x4af79a , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4af761 , merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71a500 1: m = 16 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b0195 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b00de , merge_loc_conf = 0x4b0117 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71a6e0 1: m = 16 (gdb)  315             if (module->postconfiguration(cf) != NGX_OK) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b0195 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b00de , merge_loc_conf = 0x4b0117 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71a6e0 1: m = 16 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b0195 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b00de , merge_loc_conf = 0x4b0117 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71a6e0 1: m = 16 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b0195 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b00de , merge_loc_conf = 0x4b0117 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71a6e0 1: m = 17 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0x4b0195 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b00de , merge_loc_conf = 0x4b0117 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71a6e0 1: m = 17 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b0ae8 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b0a34 , merge_loc_conf = 0x4b0a6d } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71a8c0 1: m = 17 (gdb)  315             if (module->postconfiguration(cf) != NGX_OK) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b0ae8 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b0a34 , merge_loc_conf = 0x4b0a6d } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71a8c0 1: m = 17 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b0ae8 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b0a34 , merge_loc_conf = 0x4b0a6d } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71a8c0 1: m = 17 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b0ae8 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b0a34 , merge_loc_conf = 0x4b0a6d } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71a8c0 1: m = 18 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0x4b0ae8 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b0a34 , merge_loc_conf = 0x4b0a6d } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71a8c0 1: m = 18 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b1c47 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b15a2 , merge_loc_conf = 0x4b15f3 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71aba0 1: m = 18 (gdb)  315             if (module->postconfiguration(cf) != NGX_OK) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b1c47 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b15a2 , merge_loc_conf = 0x4b15f3 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71aba0 1: m = 18 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b1c47 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b15a2 , merge_loc_conf = 0x4b15f3 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71aba0 1: m = 18 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b1c47 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b15a2 , merge_loc_conf = 0x4b15f3 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71aba0 1: m = 19 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0x4b1c47 , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b15a2 , merge_loc_conf = 0x4b15f3 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71aba0 1: m = 19 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b39fc , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b305c , merge_loc_conf = 0x4b30ad } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71ae80 1: m = 19 (gdb)  315             if (module->postconfiguration(cf) != NGX_OK) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b39fc , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b305c , merge_loc_conf = 0x4b30ad } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71ae80 1: m = 19 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b39fc , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b305c , merge_loc_conf = 0x4b30ad } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71ae80 1: m = 19 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4b39fc , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b305c , merge_loc_conf = 0x4b30ad } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71ae80 1: m = 20 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0x4b39fc , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4b305c , merge_loc_conf = 0x4b30ad } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71ae80 1: m = 20 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0x4b45e0 , postconfiguration = 0x4b465d , create_main_conf = 0, init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4b44b3 , merge_loc_conf = 0x4b4504 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71b080 1: m = 20 (gdb)  315             if (module->postconfiguration(cf) != NGX_OK) { 4: *module = {preconfiguration = 0x4b45e0 , postconfiguration = 0x4b465d , create_main_conf = 0, init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4b44b3 , merge_loc_conf = 0x4b4504 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71b080 1: m = 20 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0x4b45e0 , postconfiguration = 0x4b465d , create_main_conf = 0, init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4b44b3 , merge_loc_conf = 0x4b4504 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71b080 1: m = 20 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0x4b45e0 , postconfiguration = 0x4b465d , create_main_conf = 0, init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4b44b3 , merge_loc_conf = 0x4b4504 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71b080 1: m = 21 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0x4b45e0 , postconfiguration = 0x4b465d , create_main_conf = 0, init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4b44b3 , merge_loc_conf = 0x4b4504 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71b080 1: m = 21 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736ea0 1: m = 21 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736ea0 1: m = 21 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736ea0 1: m = 22 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736ea0 1: m = 22 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0x4b870e , postconfiguration = 0, create_main_conf = 0x4b878b ,    init_main_conf = 0x4b880e , create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71b560 1: m = 22 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0x4b870e , postconfiguration = 0, create_main_conf = 0x4b878b ,    init_main_conf = 0x4b880e , create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71b560 1: m = 22 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0x4b870e , postconfiguration = 0, create_main_conf = 0x4b878b ,    init_main_conf = 0x4b880e , create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71b560 1: m = 23 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0x4b870e , postconfiguration = 0, create_main_conf = 0x4b878b ,    init_main_conf = 0x4b880e , create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71b560 1: m = 23 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4b9181 , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71bb20 1: m = 23 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4b9181 , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71bb20 1: m = 23 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4b9181 , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71bb20 1: m = 24 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4b9181 , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71bb20 1: m = 24 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f00 1: m = 24 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f00 1: m = 24 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f00 1: m = 25 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f00 1: m = 25 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0x4bace0 , postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4bad29 , merge_loc_conf = 0x4badaa } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71be80 1: m = 25 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0x4bace0 , postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4bad29 , merge_loc_conf = 0x4badaa } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71be80 1: m = 25 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0x4bace0 , postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4bad29 , merge_loc_conf = 0x4badaa } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71be80 1: m = 26 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0x4bace0 , postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4bad29 , merge_loc_conf = 0x4badaa } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71be80 1: m = 26 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4bbf3e , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4bbdbd , merge_loc_conf = 0x4bbe1a } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71c160 1: m = 26 (gdb)  315             if (module->postconfiguration(cf) != NGX_OK) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4bbf3e , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4bbdbd , merge_loc_conf = 0x4bbe1a } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71c160 1: m = 26 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4bbf3e , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4bbdbd , merge_loc_conf = 0x4bbe1a } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71c160 1: m = 26 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0x4bbf3e , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4bbdbd , merge_loc_conf = 0x4bbe1a } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71c160 1: m = 27 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0x4bbf3e , create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4bbdbd , merge_loc_conf = 0x4bbe1a } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71c160 1: m = 27 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0x4bdd53 , postconfiguration = 0x4bf0b8 , create_main_conf = 0, init_main_conf = 0,    create_srv_conf = 0x4bddd0 , merge_srv_conf = 0x4bdec2 , create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71c900 1: m = 27 (gdb)  315             if (module->postconfiguration(cf) != NGX_OK) { 4: *module = {preconfiguration = 0x4bdd53 , postconfiguration = 0x4bf0b8 , create_main_conf = 0, init_main_conf = 0,    create_srv_conf = 0x4bddd0 , merge_srv_conf = 0x4bdec2 , create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71c900 1: m = 27 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0x4bdd53 , postconfiguration = 0x4bf0b8 , create_main_conf = 0, init_main_conf = 0,    create_srv_conf = 0x4bddd0 , merge_srv_conf = 0x4bdec2 , create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71c900 1: m = 27 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0x4bdd53 , postconfiguration = 0x4bf0b8 , create_main_conf = 0, init_main_conf = 0,    create_srv_conf = 0x4bddd0 , merge_srv_conf = 0x4bdec2 , create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71c900 1: m = 28 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0x4bdd53 , postconfiguration = 0x4bf0b8 , create_main_conf = 0, init_main_conf = 0,    create_srv_conf = 0x4bddd0 , merge_srv_conf = 0x4bdec2 , create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71c900 1: m = 28 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0x4c3984 , postconfiguration = 0, create_main_conf = 0x4c3a01 , init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4c3a6d , merge_loc_conf = 0x4c3d98 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71e0e0 1: m = 28 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0x4c3984 , postconfiguration = 0, create_main_conf = 0x4c3a01 , init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4c3a6d , merge_loc_conf = 0x4c3d98 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71e0e0 1: m = 28 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0x4c3984 , postconfiguration = 0, create_main_conf = 0x4c3a01 , init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4c3a6d , merge_loc_conf = 0x4c3d98 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71e0e0 1: m = 29 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0x4c3984 , postconfiguration = 0, create_main_conf = 0x4c3a01 , init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4c3a6d , merge_loc_conf = 0x4c3d98 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71e0e0 1: m = 29 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0x4cbee2 , postconfiguration = 0, create_main_conf = 0x4cbf5f , init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4cbfcb , merge_loc_conf = 0x4cc251 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71f360 1: m = 29 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0x4cbee2 , postconfiguration = 0, create_main_conf = 0x4cbf5f , init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4cbfcb , merge_loc_conf = 0x4cc251 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71f360 1: m = 29 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0x4cbee2 , postconfiguration = 0, create_main_conf = 0x4cbf5f , init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4cbfcb , merge_loc_conf = 0x4cc251 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71f360 1: m = 30 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0x4cbee2 , postconfiguration = 0, create_main_conf = 0x4cbf5f , init_main_conf = 0,    create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0x4cbfcb , merge_loc_conf = 0x4cc251 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x71f360 1: m = 30 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4d04bc , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d0528 , merge_loc_conf = 0x4d07f9 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x720600 1: m = 30 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4d04bc , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d0528 , merge_loc_conf = 0x4d07f9 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x720600 1: m = 30 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4d04bc , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d0528 , merge_loc_conf = 0x4d07f9 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x720600 1: m = 31 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4d04bc , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d0528 , merge_loc_conf = 0x4d07f9 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x720600 1: m = 31 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4d49ff , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d4a6b , merge_loc_conf = 0x4d4cd3 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721360 1: m = 31 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4d49ff , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d4a6b , merge_loc_conf = 0x4d4cd3 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721360 1: m = 31 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4d49ff , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d4a6b , merge_loc_conf = 0x4d4cd3 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721360 1: m = 32 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0x4d49ff , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d4a6b , merge_loc_conf = 0x4d4cd3 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721360 1: m = 32 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d7a8f , merge_loc_conf = 0x4d7bfc } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721860 1: m = 32 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d7a8f , merge_loc_conf = 0x4d7bfc } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721860 1: m = 32 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d7a8f , merge_loc_conf = 0x4d7bfc } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721860 1: m = 33 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d7a8f , merge_loc_conf = 0x4d7bfc } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721860 1: m = 33 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f40 1: m = 33 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f40 1: m = 33 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f40 1: m = 34 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f40 1: m = 34 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0x4d8572 , postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d85ef , merge_loc_conf = 0x4d8628 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721c60 1: m = 34 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0x4d8572 , postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d85ef , merge_loc_conf = 0x4d8628 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721c60 1: m = 34 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0x4d8572 , postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d85ef , merge_loc_conf = 0x4d8628 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721c60 1: m = 35 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0x4d8572 , postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4d85ef , merge_loc_conf = 0x4d8628 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x721c60 1: m = 35 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0x4da032 , merge_srv_conf = 0,    create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x722000 1: m = 35 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0x4da032 , merge_srv_conf = 0,    create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x722000 1: m = 35 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0x4da032 , merge_srv_conf = 0,    create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x722000 1: m = 36 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0x4da032 , merge_srv_conf = 0,    create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x722000 1: m = 36 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f80 1: m = 36 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f80 1: m = 36 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f80 1: m = 37 (gdb)  309         module = cf->cycle->modules[m]->ctx; 4: *module = {preconfiguration = 0, postconfiguration = 0, create_main_conf = 0, init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0, create_loc_conf = 0, merge_loc_conf = 0} 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x736f80 1: m = 37 (gdb)  311         if (module->postconfiguration) { 4: *module = {preconfiguration = 0x4daa87 , postconfiguration = 0x4dab41 ,    create_main_conf = 0x4da8ce , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4da8f1 , merge_loc_conf = 0x4da965 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x722880 1: m = 37 (gdb)  315             if (module->postconfiguration(cf) != NGX_OK) { 4: *module = {preconfiguration = 0x4daa87 , postconfiguration = 0x4dab41 ,    create_main_conf = 0x4da8ce , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4da8f1 , merge_loc_conf = 0x4da965 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x722880 1: m = 37 (gdb)  304     for (m = 0; cf->cycle->modules[m]; m++) { 4: *module = {preconfiguration = 0x4daa87 , postconfiguration = 0x4dab41 ,    create_main_conf = 0x4da8ce , init_main_conf = 0, create_srv_conf = 0, merge_srv_conf = 0,    create_loc_conf = 0x4da8f1 , merge_loc_conf = 0x4da965 } 3: ngx_http_top_header_filter = (ngx_http_output_header_filter_pt) 0 2: module = (ngx_http_module_t *) 0x722880 1: m = 37 (gdb)   Breakpoint 2, ngx_http_block (cf=0x7fffffffe130, cmd=0x712280, conf=0x766bc0) at src/http/ngx_http.c:305 305         if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { 4: *module = {preconfiguration = 0x4daa87 , postconfiguration = 0x4dab41