Changes with nginx 1.1.11 12 Dec 2011v1.1.11

*) 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.

Maxim Dounin

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3 files changed, 122 insertions, 1 deletions

diff --git a/src/mail/ngx_mail.c b/src/mail/ngx_mail.c
index 3eeb97fe0..0234d18ef 100644
--- a/src/mail/ngx_mail.c
+++ b/src/mail/ngx_mail.c
@@ -308,6 +308,12 @@ found:
     addr->ctx = listen->ctx;
     addr->bind = listen->bind;
     addr->wildcard = listen->wildcard;
+    addr->so_keepalive = listen->so_keepalive;
+#if (NGX_HAVE_KEEPALIVE_TUNABLE)
+    addr->tcp_keepidle = listen->tcp_keepidle;
+    addr->tcp_keepintvl = listen->tcp_keepintvl;
+    addr->tcp_keepcnt = listen->tcp_keepcnt;
+#endif
 #if (NGX_MAIL_SSL)
     addr->ssl = listen->ssl;
 #endif
@@ -373,6 +379,13 @@ ngx_mail_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports)
             ls->log.data = &ls->addr_text;
             ls->log.handler = ngx_accept_log_error;
 
+            ls->keepalive = addr[i].so_keepalive;
+#if (NGX_HAVE_KEEPALIVE_TUNABLE)
+            ls->keepidle = addr[i].tcp_keepidle;
+            ls->keepintvl = addr[i].tcp_keepintvl;
+            ls->keepcnt = addr[i].tcp_keepcnt;
+#endif
+
 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
             ls->ipv6only = addr[i].ipv6only;
 #endif
diff --git a/src/mail/ngx_mail.h b/src/mail/ngx_mail.h
index fd6d318a5..ca78d0553 100644
--- a/src/mail/ngx_mail.h
+++ b/src/mail/ngx_mail.h
@@ -40,6 +40,12 @@ typedef struct {
 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
     unsigned                ipv6only:2;
 #endif
+    unsigned                so_keepalive:2;
+#if (NGX_HAVE_KEEPALIVE_TUNABLE)
+    int                     tcp_keepidle;
+    int                     tcp_keepintvl;
+    int                     tcp_keepcnt;
+#endif
 } ngx_mail_listen_t;
 
 
@@ -95,6 +101,12 @@ typedef struct {
 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
     unsigned                ipv6only:2;
 #endif
+    unsigned                so_keepalive:2;
+#if (NGX_HAVE_KEEPALIVE_TUNABLE)
+    int                     tcp_keepidle;
+    int                     tcp_keepintvl;
+    int                     tcp_keepcnt;
+#endif
 } ngx_mail_conf_addr_t;
 
 
diff --git a/src/mail/ngx_mail_core_module.c b/src/mail/ngx_mail_core_module.c
index 0088fbf26..530bc5d49 100644
--- a/src/mail/ngx_mail_core_module.c
+++ b/src/mail/ngx_mail_core_module.c
@@ -24,6 +24,12 @@ static char *ngx_mail_core_resolver(ngx_conf_t *cf, ngx_command_t *cmd,
     void *conf);
 
 
+static ngx_conf_deprecated_t  ngx_conf_deprecated_so_keepalive = {
+    ngx_conf_deprecated, "so_keepalive", 
+    "so_keepalive\" parameter of the \"listen"
+};
+
+
 static ngx_command_t  ngx_mail_core_commands[] = {
 
     { ngx_string("server"),
@@ -52,7 +58,7 @@ static ngx_command_t  ngx_mail_core_commands[] = {
       ngx_conf_set_flag_slot,
       NGX_MAIL_SRV_CONF_OFFSET,
       offsetof(ngx_mail_core_srv_conf_t, so_keepalive),
-      NULL },
+      &ngx_conf_deprecated_so_keepalive },
 
     { ngx_string("timeout"),
       NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1,
@@ -446,6 +452,96 @@ ngx_mail_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
 #endif
         }
 
+        if (ngx_strncmp(value[i].data, "so_keepalive=", 13) == 0) {
+
+            if (ngx_strcmp(&value[i].data[13], "on") == 0) {
+                ls->so_keepalive = 1;
+
+            } else if (ngx_strcmp(&value[i].data[13], "off") == 0) {
+                ls->so_keepalive = 2;
+
+            } else {
+
+#if (NGX_HAVE_KEEPALIVE_TUNABLE)
+                u_char     *p, *end;
+                ngx_str_t   s;
+
+                end = value[i].data + value[i].len;
+                s.data = value[i].data + 13;
+
+                p = ngx_strlchr(s.data, end, ':');
+                if (p == NULL) {
+                    p = end;
+                }
+
+                if (p > s.data) {
+                    s.len = p - s.data;
+
+                    ls->tcp_keepidle = ngx_parse_time(&s, 1);
+                    if (ls->tcp_keepidle == NGX_ERROR) {
+                        goto invalid_so_keepalive;
+                    }
+                }
+
+                s.data = (p < end) ? (p + 1) : end;
+
+                p = ngx_strlchr(s.data, end, ':');
+                if (p == NULL) {
+                    p = end;
+                }
+
+                if (p > s.data) {
+                    s.len = p - s.data;
+
+                    ls->tcp_keepintvl = ngx_parse_time(&s, 1);
+                    if (ls->tcp_keepintvl == NGX_ERROR) {
+                        goto invalid_so_keepalive;
+                    }
+                }
+
+                s.data = (p < end) ? (p + 1) : end;
+
+                if (s.data < end) {
+                    s.len = end - s.data;
+
+                    ls->tcp_keepcnt = ngx_atoi(s.data, s.len);
+                    if (ls->tcp_keepcnt == NGX_ERROR) {
+                        goto invalid_so_keepalive;
+                    }
+                }
+
+                if (ls->tcp_keepidle == 0 && ls->tcp_keepintvl == 0
+                    && ls->tcp_keepcnt == 0)
+                {
+                    goto invalid_so_keepalive;
+                }
+
+                ls->so_keepalive = 1;
+
+#else
+
+                ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                                   "the \"so_keepalive\" parameter accepts "
+                                   "only \"on\" or \"off\" on this platform");
+                return NGX_CONF_ERROR;
+
+#endif
+            }
+
+            ls->bind = 1;
+
+            continue;
+
+#if (NGX_HAVE_KEEPALIVE_TUNABLE)
+        invalid_so_keepalive:
+
+            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                               "invalid so_keepalive value: \"%s\"",
+                               &value[i].data[13]);
+            return NGX_CONF_ERROR;
+#endif
+        }
+
         ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
                            "the invalid \"%V\" parameter", &value[i]);
         return NGX_CONF_ERROR;