Changes with nginx 0.6.3 12 Jul 2007v0.6.3

    *) Feature: the "proxy_store" and "fastcgi_store" directives.

    *) Bugfix: a segmentation fault might occur in worker process if the
       "auth_http_header" directive was used.

    *) Bugfix: a segmentation fault occurred in worker process if the
       CRAM-MD5 authentication method was used, but it was not enabled.

    *) Bugfix: a segmentation fault might occur in worker process when the
       HTTPS protocol was used in the "proxy_pass" directive.

    *) Bugfix: a segmentation fault might occur in worker process if the
       eventport method was used.

    *) Bugfix: the "proxy_ignore_client_abort" and
       "fastcgi_ignore_client_abort" directives did not work; bug appeared
       in 0.5.13.

21 files changed, 427 insertions, 49 deletions

diff --git a/CHANGES b/CHANGES
index d053b0e20..8ee8b4c8d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,4 +1,25 @@
 
+Changes with nginx 0.6.3                                         12 Jul 2007
+
+    *) Feature: the "proxy_store" and "fastcgi_store" directives.
+
+    *) Bugfix: a segmentation fault might occur in worker process if the 
+       "auth_http_header" directive was used.
+
+    *) Bugfix: a segmentation fault occurred in worker process if the 
+       CRAM-MD5 authentication method was used, but it was not enabled.
+
+    *) Bugfix: a segmentation fault might occur in worker process when the 
+       HTTPS protocol was used in the "proxy_pass" directive.
+
+    *) Bugfix: a segmentation fault might occur in worker process if the 
+       eventport method was used.
+
+    *) Bugfix: the "proxy_ignore_client_abort" and 
+       "fastcgi_ignore_client_abort" directives did not work; bug appeared 
+       in 0.5.13.
+
+
 Changes with nginx 0.6.2                                         09 Jul 2007
 
     *) Bugfix: if the FastCGI header was split in records, then nginx 
@@ -227,7 +248,7 @@ Changes with nginx 0.5.13                                        19 Feb 2007
        send timeout only.
 
     *) Bugfix: nginx could not be built on platforms different from i386, 
-       amd64, sparc и ppc; bug appeared in 0.5.8.
+       amd64, sparc and ppc; bug appeared in 0.5.8.
 
 
 Changes with nginx 0.5.12                                        12 Feb 2007
diff --git a/CHANGES.ru b/CHANGES.ru
index 356178611..ed95f68d2 100644
--- a/CHANGES.ru
+++ b/CHANGES.ru
@@ -1,4 +1,24 @@
 
+Изменения в nginx 0.6.3                                           12.07.2007
+
+    *) Добавление: директивы proxy_store и fastcgi_store.
+
+    *) Исправление: при использовании директивы auth_http_header в рабочем 
+       процессе мог произойти segmentation fault.
+
+    *) Исправление: если использовался метод аутентификации CRAM-MD5, но он 
+       не был разрешён, то в рабочем процессе происходил segmentation fault.
+
+    *) Исправление: при использовании протокола HTTPS в директиве 
+       proxy_pass в рабочем процессе мог произойти segmentation fault.
+
+    *) Исправление: в рабочем процессе мог произойти segmentation fault, 
+       если использовался метод eventport.
+
+    *) Исправление: директивы proxy_ignore_client_abort и 
+       fastcgi_ignore_client_abort не работали; ошибка появилась в 0.5.13.
+
+
 Изменения в nginx 0.6.2                                           09.07.2007
 
     *) Исправление: если заголовок ответа был разделён в FastCGI-записях, 
diff --git a/src/core/nginx.c b/src/core/nginx.c
index 357b1b9cd..df6c72cfd 100644
--- a/src/core/nginx.c
+++ b/src/core/nginx.c
@@ -796,6 +796,7 @@ ngx_core_module_init_conf(ngx_cycle_t *cycle, void *conf)
 
     if (ccf->user == (uid_t) NGX_CONF_UNSET_UINT && geteuid() == 0) {
 
+        ngx_set_errno(0);
         pwd = getpwnam(NGX_USER);
         if (pwd == NULL) {
             ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
@@ -806,6 +807,7 @@ ngx_core_module_init_conf(ngx_cycle_t *cycle, void *conf)
         ccf->username = NGX_USER;
         ccf->user = pwd->pw_uid;
 
+        ngx_set_errno(0);
         grp = getgrnam(NGX_GROUP);
         if (grp == NULL) {
             ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
@@ -920,6 +922,7 @@ ngx_set_user(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
 
     ccf->username = (char *) value[1].data;
 
+    ngx_set_errno(0);
     pwd = getpwnam((const char *) value[1].data);
     if (pwd == NULL) {
         ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
@@ -931,6 +934,7 @@ ngx_set_user(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
 
     group = (char *) ((cf->args->nelts == 2) ? value[1].data : value[2].data);
 
+    ngx_set_errno(0);
     grp = getgrnam(group);
     if (grp == NULL) {
         ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
diff --git a/src/core/nginx.h b/src/core/nginx.h
index 8a99384e8..5c52e36c2 100644
--- a/src/core/nginx.h
+++ b/src/core/nginx.h
@@ -8,7 +8,7 @@
 #define _NGINX_H_INCLUDED_
 
 
-#define NGINX_VERSION      "0.6.2"
+#define NGINX_VERSION      "0.6.3"
 #define NGINX_VER          "nginx/" NGINX_VERSION
 
 #define NGINX_VAR          "NGINX"
diff --git a/src/core/ngx_file.c b/src/core/ngx_file.c
index cef4dc1b8..656610dc8 100644
--- a/src/core/ngx_file.c
+++ b/src/core/ngx_file.c
@@ -293,6 +293,72 @@ ngx_conf_set_path_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
 }
 
 
+char *
+ngx_conf_set_access_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+    char  *confp = conf;
+
+    u_char      *p;
+    ngx_str_t   *value;
+    ngx_uint_t   i, right, shift, *access;
+
+    access = (ngx_uint_t *) (confp + cmd->offset);
+    
+    if (*access != NGX_CONF_UNSET_UINT) {
+        return "is duplicate";
+    }
+    
+    value = cf->args->elts;
+
+    *access = 0600;
+
+    for (i = 1; i < cf->args->nelts; i++) {
+
+        p = value[i].data;
+
+        if (ngx_strncmp(p, "user:", sizeof("user:") - 1) == 0) {
+            shift = 6;
+            p += sizeof("user:") - 1;
+
+        } else if (ngx_strncmp(p, "group:", sizeof("group:") - 1) == 0) {
+            shift = 3;
+            p += sizeof("group:") - 1;
+
+        } else if (ngx_strncmp(p, "all:", sizeof("all:") - 1) == 0) {
+            shift = 0;
+            p += sizeof("all:") - 1;
+
+        } else if (ngx_strncmp(p, "off", sizeof("off") - 1) == 0) {
+            *access = 0;
+            return NGX_CONF_OK;
+
+        } else {
+            goto invalid;
+        }
+
+        if (ngx_strcmp(p, "rw") == 0) {
+            right = 6;
+
+        } else if (ngx_strcmp(p, "r") == 0) {
+            right = 4;
+
+        } else {
+            goto invalid;
+        }
+
+        *access |= right << shift;
+    }
+    
+    return NGX_CONF_OK;
+
+invalid:
+
+    ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid value \"%V\"", &value[i]);
+
+    return NGX_CONF_ERROR;
+}
+
+
 ngx_int_t
 ngx_add_path(ngx_conf_t *cf, ngx_path_t **slot)
 {
diff --git a/src/core/ngx_file.h b/src/core/ngx_file.h
index e42489d8d..0f819a1b8 100644
--- a/src/core/ngx_file.h
+++ b/src/core/ngx_file.h
@@ -95,6 +95,7 @@ void ngx_init_temp_number(void);
 ngx_atomic_uint_t ngx_next_temp_number(ngx_uint_t collision);
 
 char *ngx_conf_set_path_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
+char *ngx_conf_set_access_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
 
 
 #define ngx_conf_merge_path_value(curr, prev, path, l1, l2, l3, clean, cf)    \
diff --git a/src/event/modules/ngx_eventport_module.c b/src/event/modules/ngx_eventport_module.c
index bd046edbb..0abb2eec1 100644
--- a/src/event/modules/ngx_eventport_module.c
+++ b/src/event/modules/ngx_eventport_module.c
@@ -514,6 +514,10 @@ ngx_eventport_process_events(ngx_cycle_t *cycle, ngx_msec_t timer,
 
                 } else {
                     rev->handler(rev);
+
+                    if (ev->closed) {
+                        continue;
+                    }
                 }
 
                 if (rev->accept) {
diff --git a/src/event/ngx_event_connect.h b/src/event/ngx_event_connect.h
index f8a7de944..6cad04279 100644
--- a/src/event/ngx_event_connect.h
+++ b/src/event/ngx_event_connect.h
@@ -13,50 +13,56 @@
 #include <ngx_event.h>
 
 
-#define NGX_PEER_KEEPALIVE   1
-#define NGX_PEER_NEXT        2
-#define NGX_PEER_FAILED      4
+#define NGX_PEER_KEEPALIVE           1
+#define NGX_PEER_NEXT                2
+#define NGX_PEER_FAILED              4
 
 
 typedef struct ngx_peer_connection_s  ngx_peer_connection_t;
 
 typedef ngx_int_t (*ngx_event_get_peer_pt)(ngx_peer_connection_t *pc,
     void *data);
-#if (NGX_SSL)
-typedef void (*ngx_event_save_peer_pt)(ngx_peer_connection_t *pc, void *data);
-#endif
 typedef void (*ngx_event_free_peer_pt)(ngx_peer_connection_t *pc, void *data,
     ngx_uint_t state);
+#if (NGX_SSL)
+
+typedef ngx_int_t (*ngx_event_set_peer_session_pt)(ngx_peer_connection_t *pc,
+    void *data);
+typedef void (*ngx_event_save_peer_session_pt)(ngx_peer_connection_t *pc,
+    void *data);
+#endif
 
 
 struct ngx_peer_connection_s {
-    ngx_connection_t        *connection;
+    ngx_connection_t                *connection;
 
-    struct sockaddr         *sockaddr;
-    socklen_t                socklen;
-    ngx_str_t               *name;
+    struct sockaddr                 *sockaddr;
+    socklen_t                        socklen;
+    ngx_str_t                       *name;
 
-    ngx_uint_t               tries;
+    ngx_uint_t                       tries;
 
-    ngx_event_get_peer_pt    get;
-    ngx_event_free_peer_pt   free;
-    void                    *data;
+    ngx_event_get_peer_pt            get;
+    ngx_event_free_peer_pt           free;
+    void                            *data;
 
 #if (NGX_SSL)
-    ngx_ssl_session_t       *ssl_session;
-    ngx_event_save_peer_pt   save_session;
+    ngx_event_set_peer_session_pt    set_session;
+    ngx_event_save_peer_session_pt   save_session;
 #endif
 
 #if (NGX_THREADS)
-    ngx_atomic_t            *lock;
+    ngx_atomic_t                    *lock;
 #endif
 
-    int                      rcvbuf;
+    int                              rcvbuf;
+
+    ngx_log_t                       *log;
 
-    ngx_log_t               *log;
+    unsigned                         cached:1;
 
-    unsigned                 cached:1;
-    unsigned                 log_error:2;  /* ngx_connection_log_error_e */
+                                     /* ngx_connection_log_error_e */
+    unsigned                         log_error:2;
 };
 
 
diff --git a/src/http/modules/ngx_http_dav_module.c b/src/http/modules/ngx_http_dav_module.c
index 9fab59bf7..5539f6195 100644
--- a/src/http/modules/ngx_http_dav_module.c
+++ b/src/http/modules/ngx_http_dav_module.c
@@ -239,9 +239,7 @@ ngx_http_dav_put_handler(ngx_http_request_t *r)
 
 #if !(NGX_WIN32)
 
-    if (ngx_change_file_access(temp->data, dlcf->access)
-        == NGX_FILE_ERROR)
-    {
+    if (ngx_change_file_access(temp->data, dlcf->access) == NGX_FILE_ERROR) {
         err = ngx_errno;
         not_found = NGX_HTTP_INTERNAL_SERVER_ERROR;
         failed = ngx_change_file_access_n;
diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
index 246574b13..dc4a85cce 100644
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -200,6 +200,13 @@ static ngx_command_t  ngx_http_fastcgi_commands[] = {
       offsetof(ngx_http_fastcgi_loc_conf_t, index),
       NULL },
 
+    { ngx_string("fastcgi_store"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123,
+      ngx_conf_set_access_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.store),
+      NULL },
+
     { ngx_string("fastcgi_ignore_client_abort"),
       NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
       ngx_conf_set_flag_slot,
@@ -1633,6 +1640,7 @@ ngx_http_fastcgi_create_loc_conf(ngx_conf_t *cf)
      *     conf->index.data = NULL;
      */
 
+    conf->upstream.store = NGX_CONF_UNSET_UINT;
     conf->upstream.buffering = NGX_CONF_UNSET;
     conf->upstream.ignore_client_abort = NGX_CONF_UNSET;
 
@@ -1677,6 +1685,9 @@ ngx_http_fastcgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
     ngx_http_script_compile_t     sc;
     ngx_http_script_copy_code_t  *copy;
 
+    ngx_conf_merge_uint_value(conf->upstream.store,
+                              prev->upstream.store, 0);
+
     ngx_conf_merge_value(conf->upstream.buffering,
                               prev->upstream.buffering, 1);
 
diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index 3ea8006fe..d77e183a3 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -154,6 +154,13 @@ static ngx_command_t  ngx_http_proxy_commands[] = {
       0,
       NULL },
 
+    { ngx_string("proxy_store"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123,
+      ngx_conf_set_access_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_proxy_loc_conf_t, upstream.store),
+      NULL },
+
     { ngx_string("proxy_buffering"),
       NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
       ngx_conf_set_flag_slot,
@@ -1502,6 +1509,7 @@ ngx_http_proxy_create_loc_conf(ngx_conf_t *cf)
      *     conf->rewrite_locations = NULL;
      */
 
+    conf->upstream.store = NGX_CONF_UNSET_UINT;
     conf->upstream.buffering = NGX_CONF_UNSET;
     conf->upstream.ignore_client_abort = NGX_CONF_UNSET;
 
@@ -1553,6 +1561,9 @@ ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
     ngx_http_script_compile_t     sc;
     ngx_http_script_copy_code_t  *copy;
 
+    ngx_conf_merge_uint_value(conf->upstream.store,
+                              prev->upstream.store, 0);
+
     ngx_conf_merge_value(conf->upstream.buffering,
                               prev->upstream.buffering, 1);
 
diff --git a/src/http/modules/ngx_http_upstream_ip_hash_module.c b/src/http/modules/ngx_http_upstream_ip_hash_module.c
index ba1cd53ff..3ef424921 100644
--- a/src/http/modules/ngx_http_upstream_ip_hash_module.c
+++ b/src/http/modules/ngx_http_upstream_ip_hash_module.c
@@ -198,9 +198,6 @@ ngx_http_upstream_get_ip_hash_peer(ngx_peer_connection_t *pc, void *data)
     pc->sockaddr = peer->sockaddr;
     pc->socklen = peer->socklen;
     pc->name = &peer->name;
-#if (NGX_SSL)
-    pc->ssl_session = peer->ssl_session;
-#endif
 
     /* ngx_unlock_mutex(iphp->rrp.peers->mutex); */
 
diff --git a/src/http/modules/perl/nginx.pm b/src/http/modules/perl/nginx.pm
index 5cab67d3a..a9e9837d4 100644
--- a/src/http/modules/perl/nginx.pm
+++ b/src/http/modules/perl/nginx.pm
@@ -47,7 +47,7 @@ our @EXPORT = qw(
     HTTP_INSUFFICIENT_STORAGE
 );
 
-our $VERSION = '0.6.2';
+our $VERSION = '0.6.3';
 
 require XSLoader;
 XSLoader::load('nginx', $VERSION);
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 66381e031..21812e636 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -34,6 +34,7 @@ static ngx_int_t ngx_http_set_write_handler(ngx_http_request_t *r);
 static void ngx_http_writer(ngx_http_request_t *r);
 
 static void ngx_http_block_read(ngx_http_request_t *r);
+static void ngx_http_test_read(ngx_http_request_t *r);
 static void ngx_http_set_keepalive(ngx_http_request_t *r);
 static void ngx_http_keepalive_handler(ngx_event_t *ev);
 static void ngx_http_set_lingering_close(ngx_http_request_t *r);
@@ -1701,7 +1702,7 @@ ngx_http_set_write_handler(ngx_http_request_t *r)
 
     r->http_state = NGX_HTTP_WRITING_REQUEST_STATE;
 
-    r->read_event_handler = ngx_http_block_read;
+    r->read_event_handler = ngx_http_test_read;
     r->write_event_handler = ngx_http_writer;
 
     wev = r->connection->write;
@@ -1814,6 +1815,26 @@ ngx_http_writer(ngx_http_request_t *r)
 static void
 ngx_http_block_read(ngx_http_request_t *r)
 {
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http read blocked");
+
+    /* aio does not call this handler */
+
+    if ((ngx_event_flags & NGX_USE_LEVEL_EVENT)
+        && r->connection->read->active)
+    {
+        if (ngx_del_event(r->connection->read, NGX_READ_EVENT, 0)
+            == NGX_ERROR)
+        {
+            ngx_http_close_request(r, 0);
+        }
+    }
+}
+
+
+static void
+ngx_http_test_read(ngx_http_request_t *r)
+{
     int                n;
     char               buf[1];
     ngx_err_t          err;
@@ -1823,7 +1844,7 @@ ngx_http_block_read(ngx_http_request_t *r)
     c = r->connection;
     rev = c->read;
 
-    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http read blocked");
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http test read");
 
 #if (NGX_HAVE_KQUEUE)
 
diff --git a/src/http/ngx_http_request_body.c b/src/http/ngx_http_request_body.c
index bfdc8e443..494f48416 100644
--- a/src/http/ngx_http_request_body.c
+++ b/src/http/ngx_http_request_body.c
@@ -88,6 +88,7 @@ ngx_http_read_client_request_body(ngx_http_request_t *r,
         }
 
         post_handler(r);
+
         return NGX_OK;
     }
 
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index c1bae266c..bf892fcd6 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -33,6 +33,8 @@ static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
     ssize_t bytes);
 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
 static void ngx_http_upstream_process_body(ngx_event_t *ev);
+static void ngx_http_upstream_store(ngx_http_request_t *r,
+    ngx_http_upstream_t *u);
 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
 static void ngx_http_upstream_next(ngx_http_request_t *r,
     ngx_http_upstream_t *u, ngx_uint_t ft_type);
@@ -116,6 +118,12 @@ ngx_http_upstream_header_t  ngx_http_upstream_headers_in[] = {
                  ngx_http_upstream_copy_header_line,
                  offsetof(ngx_http_headers_out_t, date), 0 },
 
+    { ngx_string("Last-Modified"),
+                 ngx_http_upstream_process_header_line,
+                 offsetof(ngx_http_upstream_headers_in_t, last_modified),
+                 ngx_http_upstream_copy_header_line,
+                 offsetof(ngx_http_headers_out_t, last_modified), 0 },
+
     { ngx_string("Server"),
                  ngx_http_upstream_process_header_line,
                  offsetof(ngx_http_upstream_headers_in_t, server),
@@ -364,6 +372,8 @@ ngx_http_upstream_init(ngx_http_request_t *r)
     cln->data = r;
     u->cleanup = &cln->handler;
 
+    u->store = (u->conf->store != 0);
+
     ngx_http_upstream_connect(r, u);
 }
 
@@ -424,7 +434,7 @@ ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
             ev->error = 1;
         }
 
-        if (!u->cachable && u->peer.connection) {
+        if (!u->cachable && !u->store && u->peer.connection) {
             ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
                           "kevent() reported that client closed prematurely "
                           "connection, so upstream connection is closed too");
@@ -490,7 +500,7 @@ ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
     ev->eof = 1;
     c->error = 1;
 
-    if (!u->cachable && u->peer.connection) {
+    if (!u->cachable && !u->store && u->peer.connection) {
         ngx_log_error(NGX_LOG_INFO, ev->log, err,
                       "client closed prematurely connection, "
                       "so upstream connection is closed too");
@@ -657,7 +667,7 @@ ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
     c->sendfile = 0;
     u->output.sendfile = 0;
 
-    if (ngx_ssl_set_session(c, u->peer.ssl_session) != NGX_OK) {
+    if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
         ngx_http_upstream_finalize_request(r, u,
                                            NGX_HTTP_INTERNAL_SERVER_ERROR);
         return;
@@ -1523,7 +1533,7 @@ ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
     p->pool = r->pool;
     p->log = c->log;
 
-    p->cachable = u->cachable;
+    p->cachable = u->cachable || u->store;
 
     p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
     if (p->temp_file == NULL) {
@@ -1536,8 +1546,9 @@ ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
     p->temp_file->path = u->conf->temp_path;
     p->temp_file->pool = r->pool;
 
-    if (u->cachable) {
+    if (u->cachable || u->store) {
         p->temp_file->persistent = 1;
+
     } else {
         p->temp_file->log_level = NGX_LOG_WARN;
         p->temp_file->warn = "an upstream response is buffered "
@@ -1552,6 +1563,7 @@ ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
         ngx_http_upstream_finalize_request(r, u, 0);
         return;
     }
+
     p->preread_bufs->buf = &u->buffer;
     p->preread_bufs->next = NULL;
     u->buffer.recycled = 1;
@@ -1559,11 +1571,13 @@ ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
     p->preread_size = u->buffer.last - u->buffer.pos;
 
     if (u->cachable) {
+
         p->buf_to_file = ngx_calloc_buf(r->pool);
         if (p->buf_to_file == NULL) {
             ngx_http_upstream_finalize_request(r, u, 0);
             return;
         }
+
         p->buf_to_file->pos = u->buffer.start;
         p->buf_to_file->last = u->buffer.pos;
         p->buf_to_file->temporary = 1;
@@ -1910,6 +1924,27 @@ ngx_http_upstream_process_body(ngx_event_t *ev)
 
     if (u->peer.connection) {
 
+        if (u->store) {
+
+            if (p->upstream_eof && u->headers_in.status_n == NGX_HTTP_OK) {
+
+                ngx_http_upstream_store(r, u);
+
+            } else if ((p->upstream_error
+                        || (p->upstream_eof
+                            && u->headers_in.status_n != NGX_HTTP_OK))
+                       && u->pipe->temp_file->file.fd != NGX_INVALID_FILE)
+            {
+                if (ngx_delete_file(u->pipe->temp_file->file.name.data)
+                    == NGX_FILE_ERROR)
+                {
+                    ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
+                                  ngx_delete_file_n " \"%s\" failed",
+                                  u->pipe->temp_file->file.name.data);
+                }
+            }
+        }
+
 #if (NGX_HTTP_FILE_CACHE)
 
         if (p->upstream_done && u->cachable) {
@@ -1955,6 +1990,130 @@ ngx_http_upstream_process_body(ngx_event_t *ev)
 
 
 static void
+ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
+{
+    char             *failed;
+    u_char           *name;
+    size_t            root;
+    time_t            lm;
+    ngx_err_t         err;
+    ngx_str_t        *temp, path, *last_modified;
+    ngx_temp_file_t  *tf;
+
+    if (u->pipe->temp_file->file.fd == NGX_INVALID_FILE) {
+
+        /* create file for empty 200 response */
+
+        tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
+        if (tf == NULL) {
+            return;
+        }
+
+        tf->file.fd = NGX_INVALID_FILE;
+        tf->file.log = r->connection->log;
+        tf->path = u->conf->temp_path;
+        tf->pool = r->pool;
+        tf->persistent = 1;
+
+        if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
+                                 tf->persistent, tf->clean, tf->access)
+            != NGX_OK)
+        {
+            return;
+        }
+
+        u->pipe->temp_file = tf;
+    }
+
+    temp = &u->pipe->temp_file->file.name;
+
+#if !(NGX_WIN32)
+
+    if (ngx_change_file_access(temp->data, u->conf->store) == NGX_FILE_ERROR) {
+        err = ngx_errno;
+        failed = ngx_change_file_access_n;
+        name = temp->data;
+
+        goto failed;
+    }
+
+#endif
+
+    if (r->upstream->headers_in.last_modified) {
+
+        last_modified = &r->upstream->headers_in.last_modified->value;
+
+        lm = ngx_http_parse_time(last_modified->data, last_modified->len);
+
+        if (lm != NGX_ERROR) {
+            if (ngx_set_file_time(temp->data, u->pipe->temp_file->file.fd, lm)
+                != NGX_OK)
+            {
+                err = ngx_errno;
+                failed = ngx_set_file_time_n;
+                name = temp->data;
+    
+                goto failed;
+            }
+        }
+    }
+
+    ngx_http_map_uri_to_path(r, &path, &root, 0);
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "upstream stores \"%s\" to \"%s\"", temp->data, path.data);
+
+    failed = ngx_rename_file_n;
+    name = path.data;
+
+    if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
+        return;
+    }
+
+    err = ngx_errno;
+
+    if (err == NGX_ENOENT) {
+
+        err = ngx_create_full_path(path.data, ngx_dir_access(u->conf->store));
+
+        if (err == 0) {
+            if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
+                return;
+            }
+
+            err = ngx_errno;
+        }
+    }
+
+#if (NGX_WIN32)
+
+    if (err == NGX_EEXIST) {
+        if (ngx_win32_rename_file(temp, &path, r->pool) != NGX_ERROR) {
+
+            if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
+                return;
+            }
+        }
+
+        err = ngx_errno;
+    }
+
+#endif
+
+failed:
+
+    if (ngx_delete_file(temp->data) == NGX_FILE_ERROR) {
+        ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
+                      ngx_delete_file_n " \"%s\" failed",
+                      temp->data);
+    }
+
+    ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
+                  "%s \"%s\" failed", failed, name);
+}
+
+
+static void
 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
 {
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
diff --git a/src/http/ngx_http_upstream.h b/src/http/ngx_http_upstream.h
index b2e3f3e93..4ba38ec0f 100644
--- a/src/http/ngx_http_upstream.h
+++ b/src/http/ngx_http_upstream.h
@@ -118,6 +118,7 @@ typedef struct {
     size_t                          temp_file_write_size_conf;
 
     ngx_uint_t                      next_upstream;
+    ngx_uint_t                      store;
 
     ngx_bufs_t                      bufs;
 
@@ -237,6 +238,7 @@ struct ngx_http_upstream_s {
 
     ngx_http_cleanup_pt            *cleanup;
 
+    unsigned                        store:1;
     unsigned                        cachable:1;
     unsigned                        accel:1;
 
diff --git a/src/http/ngx_http_upstream_round_robin.c b/src/http/ngx_http_upstream_round_robin.c
index b54e7a72d..af90d1d59 100644
--- a/src/http/ngx_http_upstream_round_robin.c
+++ b/src/http/ngx_http_upstream_round_robin.c
@@ -152,7 +152,10 @@ ngx_http_upstream_init_round_robin_peer(ngx_http_request_t *r,
     r->upstream->peer.free = ngx_http_upstream_free_round_robin_peer;
     r->upstream->peer.tries = rrp->peers->number;
 #if (NGX_HTTP_SSL)
-    r->upstream->peer.save_session = ngx_http_upstream_save_round_robin_peer;
+    r->upstream->peer.set_session =
+                               ngx_http_upstream_set_round_robin_peer_session;
+    r->upstream->peer.save_session =
+                               ngx_http_upstream_save_round_robin_peer_session;
 #endif
 
     return NGX_OK;
@@ -328,9 +331,6 @@ ngx_http_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, void *data)
     pc->sockaddr = peer->sockaddr;
     pc->socklen = peer->socklen;
     pc->name = &peer->name;
-#if (NGX_SSL)
-    pc->ssl_session = peer->ssl_session;
-#endif
 
     /* ngx_unlock_mutex(rrp->peers->mutex); */
 
@@ -408,29 +408,72 @@ ngx_http_upstream_free_round_robin_peer(ngx_peer_connection_t *pc, void *data,
 
 #if (NGX_HTTP_SSL)
 
-void
-ngx_http_upstream_save_round_robin_peer(ngx_peer_connection_t *pc, void *data)
+ngx_int_t
+ngx_http_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc,
+    void *data)
 {
     ngx_http_upstream_rr_peer_data_t  *rrp = data;
 
+    ngx_int_t                     rc;
     ngx_ssl_session_t            *ssl_session;
     ngx_http_upstream_rr_peer_t  *peer;
 
+    peer = &rrp->peers->peer[rrp->current];
+
+    /* TODO: threads only mutex */
+    /* ngx_lock_mutex(rrp->peers->mutex); */
+
+    ssl_session = peer->ssl_session;
+
+    rc = ngx_ssl_set_session(pc->connection, ssl_session);
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
+                  "set session: %p:%d",
+                  ssl_session, ssl_session ? ssl_session->references : 0);
+
+    /* ngx_unlock_mutex(rrp->peers->mutex); */
+
+    return rc;
+}
+
+
+void
+ngx_http_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc,
+    void *data)
+{
+    ngx_http_upstream_rr_peer_data_t  *rrp = data;
+
+    ngx_ssl_session_t            *old_ssl_session, *ssl_session;
+    ngx_http_upstream_rr_peer_t  *peer;
+
     ssl_session = ngx_ssl_get_session(pc->connection);
 
     if (ssl_session == NULL) {
         return;
     }
 
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
+                  "save session: %p:%d", ssl_session, ssl_session->references);
+
     peer = &rrp->peers->peer[rrp->current];
 
+    /* TODO: threads only mutex */
     /* ngx_lock_mutex(rrp->peers->mutex); */
+
+    old_ssl_session = peer->ssl_session;
     peer->ssl_session = ssl_session;
+
     /* ngx_unlock_mutex(rrp->peers->mutex); */
 
-    if (pc->ssl_session) {
+    if (old_ssl_session) {
+
+        ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
+                      "old session: %p:%d",
+                       old_ssl_session, old_ssl_session->references);
+
         /* TODO: may block */
-        ngx_ssl_free_session(pc->ssl_session);
+
+        ngx_ssl_free_session(old_ssl_session);
     }
 }
 
diff --git a/src/http/ngx_http_upstream_round_robin.h b/src/http/ngx_http_upstream_round_robin.h
index 5d952217b..2e2bf132f 100644
--- a/src/http/ngx_http_upstream_round_robin.h
+++ b/src/http/ngx_http_upstream_round_robin.h
@@ -30,7 +30,7 @@ typedef struct {
     ngx_uint_t                      down;          /* unsigned  down:1; */
 
 #if (NGX_SSL)
-    ngx_ssl_session_t              *ssl_session;
+    ngx_ssl_session_t              *ssl_session;   /* local to a process */
 #endif
 } ngx_http_upstream_rr_peer_t;
 
@@ -68,7 +68,10 @@ void ngx_http_upstream_free_round_robin_peer(ngx_peer_connection_t *pc,
     void *data, ngx_uint_t state);
 
 #if (NGX_HTTP_SSL)
-void ngx_http_upstream_save_round_robin_peer(ngx_peer_connection_t *pc,
+ngx_int_t
+    ngx_http_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc,
+    void *data);
+void ngx_http_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc,
     void *data);
 #endif
 
diff --git a/src/mail/ngx_mail_auth_http_module.c b/src/mail/ngx_mail_auth_http_module.c
index 8028c957a..c7e0fc038 100644
--- a/src/mail/ngx_mail_auth_http_module.c
+++ b/src/mail/ngx_mail_auth_http_module.c
@@ -1169,6 +1169,7 @@ ngx_mail_auth_http_create_request(ngx_mail_session_t *s, ngx_pool_t *pool,
                 + sizeof(CRLF) - 1
           + sizeof("Client-IP: ") - 1 + s->connection->addr_text.len
                 + sizeof(CRLF) - 1
+          + ahcf->header.len
           + sizeof(CRLF) - 1;
 
     b = ngx_create_temp_buf(pool, len);
diff --git a/src/mail/ngx_mail_handler.c b/src/mail/ngx_mail_handler.c
index e41983248..8fee001bb 100644
--- a/src/mail/ngx_mail_handler.c
+++ b/src/mail/ngx_mail_handler.c
@@ -708,7 +708,10 @@ ngx_pop3_auth_state(ngx_event_t *rev)
                                               (u_char *) "CRAM-MD5", 8)
                               == 0)
                 {
-                    if (s->args.nelts != 1) {
+                    if (!(cscf->pop3_auth_methods
+                          & NGX_MAIL_AUTH_CRAM_MD5_ENABLED)
+                        || s->args.nelts != 1)
+                    {
                         rc = NGX_MAIL_PARSE_INVALID_COMMAND;
                         break;
                     }
@@ -1368,7 +1371,13 @@ ngx_smtp_auth_state(ngx_event_t *rev)
                                               (u_char *) "CRAM-MD5", 8)
                               == 0)
                 {
-                    if (s->args.nelts != 1) {
+                    cscf = ngx_mail_get_module_srv_conf(s,
+                                                        ngx_mail_core_module);
+
+                    if (!(cscf->smtp_auth_methods
+                          & NGX_MAIL_AUTH_CRAM_MD5_ENABLED)
+                        || s->args.nelts != 1)
+                    {
                         rc = NGX_MAIL_PARSE_INVALID_COMMAND;
                         break;
                     }