nginx 1.1.11

    *) Feature: the "so_keepalive" parameter of the "listen" directive.
       Thanks to Vsevolod Stakhov.

    *) Feature: the "if_not_empty" parameter of the
       "fastcgi/scgi/uwsgi_param" directives.

    *) Feature: the $https variable.

    *) Feature: the "proxy_redirect" directive supports variables in the
       first parameter.

    *) Feature: the "proxy_redirect" directive supports regular expressions.

    *) Bugfix: the $sent_http_cache_control variable might contain a wrong
       value if the "expires" directive was used.
       Thanks to Yichun Zhang.

    *) Bugfix: the "read_ahead" directive might not work combined with
       "try_files" and "open_file_cache".

    *) Bugfix: a segmentation fault might occur in a worker process if small
       time was used in the "inactive" parameter of the "proxy_cache_path"
       directive.

    *) Bugfix: responses from cache might hang.

CHANGES

@@ -1,4 +1,33 @@
 
+Changes with nginx 1.1.11                                        12 Dec 2011
+
+    *) Feature: the "so_keepalive" parameter of the "listen" directive.
+       Thanks to Vsevolod Stakhov.
+
+    *) Feature: the "if_not_empty" parameter of the
+       "fastcgi/scgi/uwsgi_param" directives.
+
+    *) Feature: the $https variable.
+
+    *) Feature: the "proxy_redirect" directive supports variables in the
+       first parameter.
+
+    *) Feature: the "proxy_redirect" directive supports regular expressions.
+
+    *) Bugfix: the $sent_http_cache_control variable might contain a wrong
+       value if the "expires" directive was used.
+       Thanks to Yichun Zhang.
+
+    *) Bugfix: the "read_ahead" directive might not work combined with
+       "try_files" and "open_file_cache".
+
+    *) Bugfix: a segmentation fault might occur in a worker process if small
+       time was used in the "inactive" parameter of the "proxy_cache_path"
+       directive.
+
+    *) Bugfix: responses from cache might hang.
+
+
 Changes with nginx 1.1.10                                        30 Nov 2011
 
     *) Bugfix: a segmentation fault occured in a worker process if AIO was

CHANGES.ru

@@ -1,4 +1,34 @@
 
+Изменения в nginx 1.1.11                                          12.12.2011
+
+    *) Добавление: параметр so_keepalive в директиве listen.
+       Спасибо Всеволоду Стахову.
+
+    *) Добавление: параметр if_not_empty в директивах
+       fastcgi/scgi/uwsgi_param.
+
+    *) Добавление: переменная $https.
+
+    *) Добавление: директива proxy_redirect поддерживает переменные в первом
+       параметре.
+
+    *) Добавление: директива proxy_redirect поддерживает регулярные
+       выражения.
+
+    *) Исправление: переменная $sent_http_cache_control могла содержать
+       неверное значение при использовании директивы expires.
+       Спасибо Yichun Zhang.
+
+    *) Исправление: директива read_ahead могла не работать при использовании
+       совместно с try_files и open_file_cache.
+
+    *) Исправление: если в параметре inactive директивы proxy_cache_path
+       было указано малое время, в рабочем процессе мог произойти
+       segmentation fault.
+
+    *) Исправление: ответы из кэша могли зависать.
+
+
 Изменения в nginx 1.1.10                                          30.11.2011
 
     *) Исправление: при использовании AIO на Linux в рабочем процессе

auto/unix

@@ -328,6 +328,20 @@ ngx_feature_test="setsockopt(0, IPPROTO_TCP, TCP_DEFER_ACCEPT, NULL, 0)"
 . auto/feature
 
 
+ngx_feature="TCP_KEEPIDLE, TCP_KEEPINTVL, TCP_KEEPCNT"
+ngx_feature_name="NGX_HAVE_KEEPALIVE_TUNABLE"
+ngx_feature_run=no
+ngx_feature_incs="#include <sys/socket.h>
+                  #include <netinet/in.h>
+                  #include <netinet/tcp.h>"
+ngx_feature_path=
+ngx_feature_libs=
+ngx_feature_test="setsockopt(0, IPPROTO_TCP, TCP_KEEPIDLE, NULL, 0);
+                  setsockopt(0, IPPROTO_TCP, TCP_KEEPINTVL, NULL, 0);
+                  setsockopt(0, IPPROTO_TCP, TCP_KEEPCNT, NULL, 0)"
+. auto/feature
+
+
 ngx_feature="accept4()"
 ngx_feature_name="NGX_HAVE_ACCEPT4"
 ngx_feature_run=no

conf/fastcgi_params

@@ -9,6 +9,7 @@ fastcgi_param  REQUEST_URI        $request_uri;
 fastcgi_param  DOCUMENT_URI       $document_uri;
 fastcgi_param  DOCUMENT_ROOT      $document_root;
 fastcgi_param  SERVER_PROTOCOL    $server_protocol;
+fastcgi_param  HTTPS              $https if_not_empty;
 
 fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
 fastcgi_param  SERVER_SOFTWARE    nginx/$nginx_version;

conf/scgi_params

@@ -8,6 +8,7 @@ scgi_param  DOCUMENT_URI       $document_uri;
 scgi_param  DOCUMENT_ROOT      $document_root;
 scgi_param  SCGI               1;
 scgi_param  SERVER_PROTOCOL    $server_protocol;
+scgi_param  HTTPS              $https if_not_empty;
 
 scgi_param  REMOTE_ADDR        $remote_addr;
 scgi_param  REMOTE_PORT        $remote_port;

conf/uwsgi_params

@@ -8,6 +8,7 @@ uwsgi_param  REQUEST_URI        $request_uri;
 uwsgi_param  PATH_INFO          $document_uri;
 uwsgi_param  DOCUMENT_ROOT      $document_root;
 uwsgi_param  SERVER_PROTOCOL    $server_protocol;
+uwsgi_param  HTTPS              $https if_not_empty;
 
 uwsgi_param  REMOTE_ADDR        $remote_addr;
 uwsgi_param  REMOTE_PORT        $remote_port;

src/core/nginx.h

@@ -8,8 +8,8 @@
 #define _NGINX_H_INCLUDED_
 
 
-#define nginx_version      1001010
-#define NGINX_VERSION      "1.1.10"
+#define nginx_version      1001011
+#define NGINX_VERSION      "1.1.11"
 #define NGINX_VER          "nginx/" NGINX_VERSION
 
 #define NGINX_VAR          "NGINX"

src/core/ngx_connection.c

@@ -462,6 +462,7 @@ ngx_open_listening_sockets(ngx_cycle_t *cycle)
 void
 ngx_configure_listening_sockets(ngx_cycle_t *cycle)
 {
+    int                        keepalive;
     ngx_uint_t                 i;
     ngx_listening_t           *ls;
 
@@ -499,6 +500,56 @@ ngx_configure_listening_sockets(ngx_cycle_t *cycle)
             }
         }
 
+        if (ls[i].keepalive) {
+            keepalive = (ls[i].keepalive == 1) ? 1 : 0;
+
+            if (setsockopt(ls[i].fd, SOL_SOCKET, SO_KEEPALIVE,
+                           (const void *) &keepalive, sizeof(int))
+                == -1)
+            {
+                ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
+                              "setsockopt(SO_KEEPALIVE, %d) %V failed, ignored",
+                              keepalive, &ls[i].addr_text);
+            }
+        }
+
+#if (NGX_HAVE_KEEPALIVE_TUNABLE)
+
+        if (ls[i].keepidle) {
+            if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPIDLE,
+                           (const void *) &ls[i].keepidle, sizeof(int))
+                == -1)
+            {
+                ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
+                              "setsockopt(TCP_KEEPIDLE, %d) %V failed, ignored",
+                              ls[i].keepidle, &ls[i].addr_text);
+            }
+        }
+
+        if (ls[i].keepintvl) {
+            if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPINTVL,
+                           (const void *) &ls[i].keepintvl, sizeof(int))
+                == -1)
+            {
+                ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
+                             "setsockopt(TCP_KEEPINTVL, %d) %V failed, ignored",
+                             ls[i].keepintvl, &ls[i].addr_text);
+            }
+        }
+
+        if (ls[i].keepcnt) {
+            if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPCNT,
+                           (const void *) &ls[i].keepcnt, sizeof(int))
+                == -1)
+            {
+                ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
+                              "setsockopt(TCP_KEEPCNT, %d) %V failed, ignored",
+                              ls[i].keepcnt, &ls[i].addr_text);
+            }
+        }
+
+#endif
+
 #if (NGX_HAVE_SETFIB)
         if (ls[i].setfib != -1) {
             if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SETFIB,

src/core/ngx_connection.h

@@ -27,6 +27,11 @@ struct ngx_listening_s {
     int                 backlog;
     int                 rcvbuf;
     int                 sndbuf;
+#if (NGX_HAVE_KEEPALIVE_TUNABLE)
+    int                 keepidle;
+    int                 keepintvl;
+    int                 keepcnt;
+#endif
 
     /* handler of accepted connection */
     ngx_connection_handler_pt   handler;
@@ -60,6 +65,7 @@ struct ngx_listening_s {
 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
     unsigned            ipv6only:2;
 #endif
+    unsigned            keepalive:2;
 
 #if (NGX_HAVE_DEFERRED_ACCEPT)
     unsigned            deferred_accept:1;

src/core/ngx_regex.c

@@ -136,23 +136,6 @@ ngx_regex_compile(ngx_regex_compile_t *rc)
 }
 
 
-ngx_int_t
-ngx_regex_capture_count(ngx_regex_t *re)
-{
-    int  rc, n;
-
-    n = 0;
-
-    rc = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &n);
-
-    if (rc < 0) {
-        return (ngx_int_t) rc;
-    }
-
-    return (ngx_int_t) n;
-}
-
-
 ngx_int_t
 ngx_regex_exec_array(ngx_array_t *a, ngx_str_t *s, ngx_log_t *log)
 {

src/http/modules/ngx_http_fastcgi_module.c

@@ -411,8 +411,8 @@ static ngx_command_t  ngx_http_fastcgi_commands[] = {
       &ngx_http_fastcgi_next_upstream_masks },
 
     { ngx_string("fastcgi_param"),
-      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
-      ngx_conf_set_keyval_slot,
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE23,
+      ngx_http_upstream_param_set_slot,
       NGX_HTTP_LOC_CONF_OFFSET,
       offsetof(ngx_http_fastcgi_loc_conf_t, params_source),
       NULL },
@@ -708,7 +708,7 @@ ngx_http_fastcgi_create_request(ngx_http_request_t *r)
     u_char                        ch, *pos, *lowcase_key;
     size_t                        size, len, key_len, val_len, padding,
                                   allocated;
-    ngx_uint_t                    i, n, next, hash, header_params;
+    ngx_uint_t                    i, n, next, hash, skip_empty, header_params;
     ngx_buf_t                    *b;
     ngx_chain_t                  *cl, *body;
     ngx_list_part_t              *part;
@@ -739,11 +739,18 @@ ngx_http_fastcgi_create_request(ngx_http_request_t *r)
             lcode = *(ngx_http_script_len_code_pt *) le.ip;
             key_len = lcode(&le);
 
+            lcode = *(ngx_http_script_len_code_pt *) le.ip;
+            skip_empty = lcode(&le);
+
             for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) {
                 lcode = *(ngx_http_script_len_code_pt *) le.ip;
             }
             le.ip += sizeof(uintptr_t);
 
+            if (skip_empty && val_len == 0) {
+                continue;
+            }
+
             len += 1 + key_len + ((val_len > 127) ? 4 : 1) + val_len;
         }
     }
@@ -893,11 +900,28 @@ ngx_http_fastcgi_create_request(ngx_http_request_t *r)
             lcode = *(ngx_http_script_len_code_pt *) le.ip;
             key_len = (u_char) lcode(&le);
 
+            lcode = *(ngx_http_script_len_code_pt *) le.ip;
+            skip_empty = lcode(&le);
+
             for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) {
                 lcode = *(ngx_http_script_len_code_pt *) le.ip;
             }
             le.ip += sizeof(uintptr_t);
 
+            if (skip_empty && val_len == 0) {
+                e.skip = 1;
+
+                while (*(uintptr_t *) e.ip) {
+                    code = *(ngx_http_script_code_pt *) e.ip;
+                    code((ngx_http_script_engine_t *) &e);
+                }
+                e.ip += sizeof(uintptr_t);
+
+                e.skip = 0;
+
+                continue;
+            }
+
             *e.pos++ = (u_char) key_len;
 
             if (val_len > 127) {
@@ -2370,9 +2394,9 @@ ngx_http_fastcgi_merge_params(ngx_conf_t *cf,
 #if (NGX_HTTP_CACHE)
     ngx_array_t                   params_merged;
 #endif
-    ngx_keyval_t                 *src;
     ngx_hash_key_t               *hk;
     ngx_hash_init_t               hash;
+    ngx_http_upstream_param_t    *src;
     ngx_http_script_compile_t     sc;
     ngx_http_script_copy_code_t  *copy;
 
@@ -2433,9 +2457,11 @@ ngx_http_fastcgi_merge_params(ngx_conf_t *cf,
 #if (NGX_HTTP_CACHE)
 
     if (conf->upstream.cache) {
-        ngx_keyval_t  *h, *s;
+        ngx_keyval_t               *h;
+        ngx_http_upstream_param_t  *s;
 
-        if (ngx_array_init(&params_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t))
+        if (ngx_array_init(&params_merged, cf->temp_pool, 4,
+                           sizeof(ngx_http_upstream_param_t))
             != NGX_OK)
         {
             return NGX_ERROR;
@@ -2469,7 +2495,9 @@ ngx_http_fastcgi_merge_params(ngx_conf_t *cf,
                 return NGX_ERROR;
             }
 
-            *s = *h;
+            s->key = h->key;
+            s->value = h->value;
+            s->skip_empty = 0;
 
         next:
 
@@ -2511,6 +2539,15 @@ ngx_http_fastcgi_merge_params(ngx_conf_t *cf,
         copy->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code;
         copy->len = src[i].key.len;
 
+        copy = ngx_array_push_n(conf->params_len,
+                                sizeof(ngx_http_script_copy_code_t));
+        if (copy == NULL) {
+            return NGX_ERROR;
+        }
+
+        copy->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code;
+        copy->len = src[i].skip_empty;
+
 
         size = (sizeof(ngx_http_script_copy_code_t)
                 + src[i].key.len + sizeof(uintptr_t) - 1)

src/http/modules/ngx_http_log_module.c

@@ -971,7 +971,7 @@ ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
 
         if (buf == NGX_ERROR) {
             ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
-                               "invalid parameter \"%V\"", &value[3]);
+                               "invalid buffer value \"%V\"", &name);
             return NGX_CONF_ERROR;
         }
 
@@ -1004,6 +1004,12 @@ ngx_http_log_set_format(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
     ngx_uint_t           i;
     ngx_http_log_fmt_t  *fmt;
 
+    if (cf->cmd_type != NGX_HTTP_MAIN_CONF) {
+        ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
+                           "the \"log_format\" directive may be used "
+                           "only on \"http\" level");
+    }
+
     value = cf->args->elts;
 
     fmt = lmcf->formats.elts;