Changes with nginx 0.3.29 20 Feb 2006v0.3.29

    *) Feature: now nginx uses less memory, if PHP in FastCGI mode sends
       many warnings before the response.

    *) Bugfix: the "Transfer-Encoding: chunked" header line was issued in
       the 204 responses for the HTTP/1.1 requests.

    *) Bugfix: nginx returned the 502 response, if the complete response
       header lines were transferred in a separate FastCGI records.

    *) Bugfix: if the proxied URI was specified in the "post_action"
       directive, then it ran only after a successful completion of a
       request.

9 files changed, 2000 insertions, 31 deletions

diff --git a/CHANGES b/CHANGES
index 389ee0b33..176f42ba2 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,4 +1,20 @@
 
+Changes with nginx 0.3.29                                        20 Feb 2006
+
+    *) Feature: now nginx uses less memory, if PHP in FastCGI mode sends 
+       many warnings before the response.
+
+    *) Bugfix: the "Transfer-Encoding: chunked" header line was issued in 
+       the 204 responses for the HTTP/1.1 requests.
+
+    *) Bugfix: nginx returned the 502 response, if the complete response 
+       header lines were transferred in a separate FastCGI records.
+
+    *) Bugfix: if the proxied URI was specified in the "post_action" 
+       directive, then it ran only after a successful completion of a 
+       request.
+
+
 Changes with nginx 0.3.28                                        16 Feb 2006
 
     *) Feature: the "restrict_host_names" directive is canceled.
diff --git a/CHANGES.ru b/CHANGES.ru
index a1425a36a..805f8da34 100644
--- a/CHANGES.ru
+++ b/CHANGES.ru
@@ -1,4 +1,19 @@
 
+Изменения в nginx 0.3.29                                          20.02.2006
+
+    *) Добавление: теперь nginx использует меньше памяти, если PHP в режиме 
+       FastCGI передаёт большое количество предупреждений перед ответом.
+
+    *) Исправление: в ответах 204 для запросов версии HTTP/1.1 выдавалась 
+       строка заголовка "Transfer-Encoding: chunked".
+
+    *) Исправление: nginx возвращал 502 код ответа, если FastCGI сервер 
+       передавал полные строки заголовка ответа в отдельных FastCGI записях.
+
+    *) Исправление: если в директиве post_action был указан проксируемый 
+       URI, то он выполнялся только после успешного завершения запроса.
+
+
 Изменения в nginx 0.3.28                                          16.02.2006
 
     *) Добавление: директива restrict_host_names упразднена.
diff --git a/src/core/nginx.h b/src/core/nginx.h
index 5adb47d1f..01ce1bd93 100644
--- a/src/core/nginx.h
+++ b/src/core/nginx.h
@@ -8,7 +8,7 @@
 #define _NGINX_H_INCLUDED_
 
 
-#define NGINX_VER          "nginx/0.3.28"
+#define NGINX_VER          "nginx/0.3.29"
 
 #define NGINX_VAR          "NGINX"
 #define NGX_OLDPID_EXT     ".oldbin"
diff --git a/src/event/ngx_event_accept.c b/src/event/ngx_event_accept.c
index 875c45d0e..a795075d0 100644
--- a/src/event/ngx_event_accept.c
+++ b/src/event/ngx_event_accept.c
@@ -264,8 +264,7 @@ ngx_trylock_accept_mutex(ngx_cycle_t *cycle)
         ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
                        "accept mutex locked");
 
-        if (ngx_accept_mutex_held && !(ngx_event_flags & NGX_USE_RTSIG_EVENT))
-        {
+        if (ngx_accept_mutex_held && !(ngx_event_flags & NGX_USE_RTSIG_EVENT)) {
             return NGX_OK;
         }
 
diff --git a/src/http/modules/ngx_http_chunked_filter_module.c b/src/http/modules/ngx_http_chunked_filter_module.c
index 89c4a0429..d8d12088c 100644
--- a/src/http/modules/ngx_http_chunked_filter_module.c
+++ b/src/http/modules/ngx_http_chunked_filter_module.c
@@ -50,7 +50,10 @@ static ngx_http_output_body_filter_pt    ngx_http_next_body_filter;
 static ngx_int_t
 ngx_http_chunked_header_filter(ngx_http_request_t *r)
 {
-    if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED || r != r->main) {
+    if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED
+        || r->headers_out.status == NGX_HTTP_NO_CONTENT
+        || r != r->main)
+    {
         return ngx_http_next_header_filter(r);
     }
 
diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
index 45b6e7382..978c32542 100644
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -46,7 +46,7 @@ typedef struct {
     size_t                     length;
     size_t                     padding;
 
-    ngx_uint_t                 header;
+    ngx_uint_t                 fastcgi_stdout;
 } ngx_http_fastcgi_ctx_t;
 
 
@@ -776,7 +776,7 @@ ngx_http_fastcgi_reinit_request(ngx_http_request_t *r)
     }
 
     f->state = ngx_http_fastcgi_st_version;
-    f->header = 0;
+    f->fastcgi_stdout = 0;
 
     return NGX_OK;
 }
@@ -876,13 +876,6 @@ ngx_http_fastcgi_process_header(ngx_http_request_t *r)
 
         if (f->type == NGX_HTTP_FASTCGI_STDERR) {
 
-            if (f->header) {
-                ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
-                              "upstream split a header in FastCGI records");
-
-                return NGX_HTTP_UPSTREAM_INVALID_HEADER;
-            }
-
             if (f->length) {
                 line.data = u->buffer.pos;
 
@@ -910,6 +903,18 @@ ngx_http_fastcgi_process_header(ngx_http_request_t *r)
                               "FastCGI sent in stderr: \"%V\"", &line);
 
                 if (u->buffer.pos == u->buffer.last) {
+
+                    if (!f->fastcgi_stdout) {
+
+                        /*
+                         * the special handling the large number
+                         * of the PHP warnings to not allocate memory
+                         */
+
+                        u->buffer.pos = u->buffer.start;
+                        u->buffer.last = u->buffer.start;
+                    }
+
                     return NGX_AGAIN;
                 }
 
@@ -923,6 +928,8 @@ ngx_http_fastcgi_process_header(ngx_http_request_t *r)
 
         /* f->type == NGX_HTTP_FASTCGI_STDOUT */
 
+        f->fastcgi_stdout = 1;
+
         start = u->buffer.pos;
 
         if (u->buffer.pos + f->length < u->buffer.last) {
@@ -939,8 +946,6 @@ ngx_http_fastcgi_process_header(ngx_http_request_t *r)
             last = NULL;
         }
 
-        f->header = 1;
-
         for ( ;; ) {
 
             rc = ngx_http_parse_header_line(r, &u->buffer);
@@ -991,7 +996,13 @@ ngx_http_fastcgi_process_header(ngx_http_request_t *r)
                                "http fastcgi header: \"%V: %V\"",
                                &h->key, &h->value);
 
-                continue;
+                if (u->buffer.pos < u->buffer.last) {
+                    continue;
+                }
+
+                /* the end of the FastCGI record */
+
+                break;
             }
 
             if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
@@ -1045,17 +1056,6 @@ ngx_http_fastcgi_process_header(ngx_http_request_t *r)
 
         f->length -= u->buffer.pos - start;
 
-        if (rc == NGX_AGAIN) {
-            if (u->buffer.pos == u->buffer.last) {
-                return NGX_AGAIN;
-            }
-
-            ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
-                          "upstream split a header in FastCGI records");
-
-            return NGX_HTTP_UPSTREAM_INVALID_HEADER;
-        }
-
         if (f->length == 0) {
             if (f->padding) {
                 f->state = ngx_http_fastcgi_st_padding;
@@ -1064,7 +1064,20 @@ ngx_http_fastcgi_process_header(ngx_http_request_t *r)
             }
         }
 
-        return NGX_OK;
+        if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
+            return NGX_OK;
+        }
+
+        if (u->buffer.pos == u->buffer.last) {
+            return NGX_AGAIN;
+        }
+
+        if (rc == NGX_AGAIN) {
+            ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
+                          "upstream split a header line in FastCGI records");
+
+            return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+        }
     }
 }
 
diff --git a/src/http/modules/ngx_http_fastcgi_module.c.orig b/src/http/modules/ngx_http_fastcgi_module.c.orig
new file mode 100644
index 000000000..b612b0707
--- /dev/null
+++ b/src/http/modules/ngx_http_fastcgi_module.c.orig
@@ -0,0 +1,1920 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+#include <nginx.h>
+
+
+typedef struct {
+    ngx_http_upstream_conf_t   upstream;
+
+    ngx_peers_t               *peers;
+
+    ngx_str_t                  index;
+
+    ngx_array_t               *flushes;
+    ngx_array_t               *params_len;
+    ngx_array_t               *params;
+    ngx_array_t               *params_source;
+} ngx_http_fastcgi_loc_conf_t;
+
+
+typedef enum {
+    ngx_http_fastcgi_st_version = 0,
+    ngx_http_fastcgi_st_type,
+    ngx_http_fastcgi_st_request_id_hi,
+    ngx_http_fastcgi_st_request_id_lo,
+    ngx_http_fastcgi_st_content_length_hi,
+    ngx_http_fastcgi_st_content_length_lo,
+    ngx_http_fastcgi_st_padding_length,
+    ngx_http_fastcgi_st_reserved,
+    ngx_http_fastcgi_st_data,
+    ngx_http_fastcgi_st_padding
+} ngx_http_fastcgi_state_e;
+
+
+typedef struct {
+    ngx_http_fastcgi_state_e   state;
+    u_char                    *pos;
+    u_char                    *last;
+    ngx_uint_t                 type;
+    size_t                     length;
+    size_t                     padding;
+
+    ngx_uint_t                 header;
+} ngx_http_fastcgi_ctx_t;
+
+
+#define NGX_HTTP_FASTCGI_RESPONDER      1
+
+#define NGX_HTTP_FASTCGI_BEGIN_REQUEST  1
+#define NGX_HTTP_FASTCGI_ABORT_REQUEST  2
+#define NGX_HTTP_FASTCGI_END_REQUEST    3
+#define NGX_HTTP_FASTCGI_PARAMS         4
+#define NGX_HTTP_FASTCGI_STDIN          5
+#define NGX_HTTP_FASTCGI_STDOUT         6
+#define NGX_HTTP_FASTCGI_STDERR         7
+#define NGX_HTTP_FASTCGI_DATA           8
+
+
+typedef struct {
+    u_char  version;
+    u_char  type;
+    u_char  request_id_hi;
+    u_char  request_id_lo;
+    u_char  content_length_hi;
+    u_char  content_length_lo;
+    u_char  padding_length;
+    u_char  reserved;
+} ngx_http_fastcgi_header_t;
+
+
+typedef struct {
+    u_char  role_hi;
+    u_char  role_lo;
+    u_char  flags;
+    u_char  reserved[5];
+} ngx_http_fastcgi_begin_request_t;
+
+
+typedef struct {
+    u_char  version;
+    u_char  type;
+    u_char  request_id_hi;
+    u_char  request_id_lo;
+} ngx_http_fastcgi_header_small_t;
+
+
+typedef struct {
+    ngx_http_fastcgi_header_t         h0;
+    ngx_http_fastcgi_begin_request_t  br;
+    ngx_http_fastcgi_header_small_t   h1;
+} ngx_http_fastcgi_request_start_t;
+
+
+static ngx_int_t ngx_http_fastcgi_create_request(ngx_http_request_t *r);
+static ngx_int_t ngx_http_fastcgi_reinit_request(ngx_http_request_t *r);
+static ngx_int_t ngx_http_fastcgi_process_header(ngx_http_request_t *r);
+static ngx_int_t ngx_http_fastcgi_input_filter(ngx_event_pipe_t *p,
+    ngx_buf_t *buf);
+static ngx_int_t ngx_http_fastcgi_process_record(ngx_http_request_t *r,
+    ngx_http_fastcgi_ctx_t *f);
+static void ngx_http_fastcgi_abort_request(ngx_http_request_t *r);
+static void ngx_http_fastcgi_finalize_request(ngx_http_request_t *r,
+    ngx_int_t rc);
+
+static ngx_int_t ngx_http_fastcgi_add_variables(ngx_conf_t *cf);
+static void *ngx_http_fastcgi_create_loc_conf(ngx_conf_t *cf);
+static char *ngx_http_fastcgi_merge_loc_conf(ngx_conf_t *cf,
+    void *parent, void *child);
+static ngx_int_t ngx_http_fastcgi_script_name_variable(ngx_http_request_t *r,
+    ngx_http_variable_value_t *v, uintptr_t data);
+
+static char *ngx_http_fastcgi_pass(ngx_conf_t *cf, ngx_command_t *cmd,
+    void *conf);
+static char *ngx_http_fastcgi_lowat_check(ngx_conf_t *cf, void *post,
+    void *data);
+
+
+static ngx_http_fastcgi_request_start_t  ngx_http_fastcgi_request_start = {
+    { 1,                                               /* version */
+      NGX_HTTP_FASTCGI_BEGIN_REQUEST,                  /* type */
+      0,                                               /* request_id_hi */
+      1,                                               /* request_id_lo */
+      0,                                               /* content_length_hi */
+      sizeof(ngx_http_fastcgi_begin_request_t),        /* content_length_lo */
+      0,                                               /* padding_length */
+      0 },                                             /* reserved */
+
+    { 0,                                               /* role_hi */
+      NGX_HTTP_FASTCGI_RESPONDER,                      /* role_lo */
+      0, /* NGX_HTTP_FASTCGI_KEEP_CONN */              /* flags */
+      { 0, 0, 0, 0, 0 } },                             /* reserved[5] */
+
+    { 1,                                               /* version */
+      NGX_HTTP_FASTCGI_PARAMS,                         /* type */
+      0,                                               /* request_id_hi */
+      1 },                                             /* request_id_lo */
+
+};
+
+
+static ngx_str_t  ngx_http_fastcgi_script_name =
+    ngx_string("fastcgi_script_name");
+
+
+static ngx_conf_post_t  ngx_http_fastcgi_lowat_post =
+    { ngx_http_fastcgi_lowat_check };
+
+static ngx_conf_deprecated_t  ngx_conf_deprecated_fastcgi_header_buffer_size = {
+    ngx_conf_deprecated, "fastcgi_header_buffer_size", "fastcgi_buffer_size"
+};
+
+
+static ngx_conf_bitmask_t  ngx_http_fastcgi_next_upstream_masks[] = {
+    { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
+    { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
+    { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
+    { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 },
+    { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
+    { ngx_null_string, 0 }
+};
+
+
+static ngx_command_t  ngx_http_fastcgi_commands[] = {
+
+    { ngx_string("fastcgi_pass"),
+      NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_http_fastcgi_pass,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      0,
+      NULL },
+
+    { ngx_string("fastcgi_index"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_str_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, index),
+      NULL },
+
+    { ngx_string("fastcgi_connect_timeout"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_msec_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.connect_timeout),
+      NULL },
+
+    { ngx_string("fastcgi_send_timeout"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_msec_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.send_timeout),
+      NULL },
+
+    { ngx_string("fastcgi_send_lowat"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_size_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.send_lowat),
+      &ngx_http_fastcgi_lowat_post },
+
+    { ngx_string("fastcgi_buffer_size"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_size_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.buffer_size),
+      NULL },
+
+    { ngx_string("fastcgi_header_buffer_size"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_size_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.buffer_size),
+      &ngx_conf_deprecated_fastcgi_header_buffer_size },
+
+    { ngx_string("fastcgi_pass_request_headers"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.pass_request_headers),
+      NULL },
+
+    { ngx_string("fastcgi_pass_request_body"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.pass_request_body),
+      NULL },
+
+    { ngx_string("fastcgi_redirect_errors"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.redirect_errors),
+      NULL },
+
+    { ngx_string("fastcgi_x_powered_by"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.pass_x_powered_by),
+      NULL },
+
+    { ngx_string("fastcgi_read_timeout"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_msec_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.read_timeout),
+      NULL },
+
+    { ngx_string("fastcgi_buffers"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
+      ngx_conf_set_bufs_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.bufs),
+      NULL },
+
+    { ngx_string("fastcgi_busy_buffers_size"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_size_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.busy_buffers_size_conf),
+      NULL },
+
+    { ngx_string("fastcgi_temp_path"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234,
+      ngx_conf_set_path_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.temp_path),
+      (void *) ngx_garbage_collector_temp_handler },
+
+    { ngx_string("fastcgi_max_temp_file_size"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_size_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.max_temp_file_size_conf),
+      NULL },
+
+    { ngx_string("fastcgi_temp_file_write_size"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_size_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.temp_file_write_size_conf),
+      NULL },
+
+    { ngx_string("fastcgi_next_upstream"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
+      ngx_conf_set_bitmask_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.next_upstream),
+      &ngx_http_fastcgi_next_upstream_masks },
+
+    { ngx_string("fastcgi_upstream_max_fails"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.max_fails),
+      NULL },
+
+    { ngx_string("fastcgi_upstream_fail_timeout"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_sec_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.fail_timeout),
+      NULL },
+
+    { ngx_string("fastcgi_param"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
+      ngx_conf_set_table_elt_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, params_source),
+      NULL },
+
+      ngx_null_command
+};
+
+
+ngx_http_module_t  ngx_http_fastcgi_module_ctx = {
+    ngx_http_fastcgi_add_variables,        /* preconfiguration */
+    NULL,                                  /* postconfiguration */
+
+    NULL,                                  /* create main configuration */
+    NULL,                                  /* init main configuration */
+
+    NULL,                                  /* create server configuration */
+    NULL,                                  /* merge server configuration */
+
+    ngx_http_fastcgi_create_loc_conf,      /* create location configuration */
+    ngx_http_fastcgi_merge_loc_conf        /* merge location configuration */
+};
+
+
+ngx_module_t  ngx_http_fastcgi_module = {
+    NGX_MODULE_V1,
+    &ngx_http_fastcgi_module_ctx,          /* module context */
+    ngx_http_fastcgi_commands,             /* module directives */
+    NGX_HTTP_MODULE,                       /* module type */
+    NULL,                                  /* init master */
+    NULL,                                  /* init module */
+    NULL,                                  /* init process */
+    NULL,                                  /* init thread */
+    NULL,                                  /* exit thread */
+    NULL,                                  /* exit process */
+    NULL,                                  /* exit master */
+    NGX_MODULE_V1_PADDING
+};
+
+
+static ngx_int_t
+ngx_http_fastcgi_handler(ngx_http_request_t *r)
+{
+    ngx_int_t                     rc;
+    ngx_http_upstream_t          *u;
+    ngx_http_fastcgi_loc_conf_t  *flcf;
+
+    flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
+
+    u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
+    if (u == NULL) {
+        return NGX_HTTP_INTERNAL_SERVER_ERROR;
+    }
+
+    u->peer.log = r->connection->log;
+    u->peer.log_error = NGX_ERROR_ERR;
+    u->peer.peers = flcf->peers;
+    u->peer.tries = flcf->peers->number;
+#if (NGX_THREADS)
+    u->peer.lock = &r->connection->lock;
+#endif
+
+    u->output.tag = (ngx_buf_tag_t) &ngx_http_fastcgi_module;
+
+    u->conf = &flcf->upstream;
+
+    u->create_request = ngx_http_fastcgi_create_request;
+    u->reinit_request = ngx_http_fastcgi_reinit_request;
+    u->process_header = ngx_http_fastcgi_process_header;
+    u->abort_request = ngx_http_fastcgi_abort_request;
+    u->finalize_request = ngx_http_fastcgi_finalize_request;
+
+    u->pipe = ngx_pcalloc(r->pool, sizeof(ngx_event_pipe_t));
+    if (u->pipe == NULL) {
+        return NGX_HTTP_INTERNAL_SERVER_ERROR;
+    }
+
+    u->pipe->input_filter = ngx_http_fastcgi_input_filter;
+    u->pipe->input_ctx = r;
+
+    r->upstream = u;
+
+    rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init);
+
+    if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
+        return rc;
+    }
+
+    return NGX_DONE;
+}
+
+
+static ngx_int_t
+ngx_http_fastcgi_create_request(ngx_http_request_t *r)
+{
+    off_t                         file_pos;
+    u_char                        ch, *pos;
+    size_t                        size, len, key_len, val_len, padding;
+    ngx_uint_t                    i, n, next;
+    ngx_buf_t                    *b;
+    ngx_chain_t                  *cl, *body;
+    ngx_list_part_t              *part;
+    ngx_table_elt_t              *header;
+    ngx_http_script_code_pt       code;
+    ngx_http_script_engine_t      e, le;
+    ngx_http_fastcgi_header_t    *h;
+    ngx_http_fastcgi_loc_conf_t  *flcf;
+    ngx_http_script_len_code_pt   lcode;
+
+    len = 0;
+
+    flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
+
+    if (flcf->params_len) {
+        ngx_memzero(&le, sizeof(ngx_http_script_engine_t));
+
+        ngx_http_script_flush_no_cachable_variables(r, flcf->flushes);
+        le.flushed = 1;
+
+        le.ip = flcf->params_len->elts;
+        le.request = r;
+
+        while (*(uintptr_t *) le.ip) {
+
+            lcode = *(ngx_http_script_len_code_pt *) le.ip;
+            key_len = 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);
+
+            len += 1 + key_len + ((val_len > 127) ? 4 : 1) + val_len;
+        }
+    }
+
+    if (flcf->upstream.pass_request_headers) {
+
+        part = &r->headers_in.headers.part;
+        header = part->elts;
+
+        for (i = 0; /* void */; i++) {
+
+            if (i >= part->nelts) {
+                if (part->next == NULL) {
+                    break;
+                }
+
+                part = part->next;
+                header = part->elts;
+                i = 0;
+            }
+
+            len += ((sizeof("HTTP_") - 1 + header[i].key.len > 127) ? 4 : 1)
+                + ((header[i].value.len > 127) ? 4 : 1)
+                + sizeof("HTTP_") - 1 + header[i].key.len + header[i].value.len;
+        }
+    }
+
+
+    if (len > 65535) {
+        ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
+                      "fastcgi: the request record is too big");
+        return NGX_ERROR;
+    }
+
+
+    padding = 8 - len % 8;
+    padding = (padding == 8) ? 0 : padding;
+
+
+    size = sizeof(ngx_http_fastcgi_header_t)
+           + sizeof(ngx_http_fastcgi_begin_request_t)
+
+           + sizeof(ngx_http_fastcgi_header_t)  /* NGX_HTTP_FASTCGI_PARAMS */
+           + len + padding
+           + sizeof(ngx_http_fastcgi_header_t)  /* NGX_HTTP_FASTCGI_PARAMS */
+
+           + sizeof(ngx_http_fastcgi_header_t); /* NGX_HTTP_FASTCGI_STDIN */
+
+
+    b = ngx_create_temp_buf(r->pool, size);
+    if (b == NULL) {
+        return NGX_ERROR;
+    }
+
+    cl = ngx_alloc_chain_link(r->pool);
+    if (cl == NULL) {
+        return NGX_ERROR;
+    }
+
+    cl->buf = b;
+
+    ngx_memcpy(b->pos, &ngx_http_fastcgi_request_start,
+               sizeof(ngx_http_fastcgi_request_start_t));
+
+    h = (ngx_http_fastcgi_header_t *)
+             (b->pos + sizeof(ngx_http_fastcgi_header_t)
+                     + sizeof(ngx_http_fastcgi_begin_request_t));
+
+    h->content_length_hi = (u_char) ((len >> 8) & 0xff);
+    h->content_length_lo = (u_char) (len & 0xff);
+    h->padding_length = (u_char) padding;
+    h->reserved = 0;
+
+    b->last = b->pos + sizeof(ngx_http_fastcgi_header_t)
+                     + sizeof(ngx_http_fastcgi_begin_request_t)
+                     + sizeof(ngx_http_fastcgi_header_t);
+
+
+    if (flcf->params_len) {
+        ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
+
+        e.ip = flcf->params->elts;
+        e.pos = b->last;
+        e.request = r;
+        e.flushed = 1;
+
+        le.ip = flcf->params_len->elts;
+
+        while (*(uintptr_t *) le.ip) {
+
+            lcode = *(ngx_http_script_len_code_pt *) le.ip;
+            key_len = (u_char) 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);
+
+            *e.pos++ = (u_char) key_len;
+
+            if (val_len > 127) {
+                *e.pos++ = (u_char) (((val_len >> 24) & 0x7f) | 0x80);
+                *e.pos++ = (u_char) ((val_len >> 16) & 0xff);
+                *e.pos++ = (u_char) ((val_len >> 8) & 0xff);
+                *e.pos++ = (u_char) (val_len & 0xff);
+
+            } else {
+                *e.pos++ = (u_char) val_len;
+            }
+
+            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);
+        }
+
+        b->last = e.pos;
+    }
+
+
+    if (flcf->upstream.pass_request_headers) {
+
+        part = &r->headers_in.headers.part;
+        header = part->elts;
+
+        for (i = 0; /* void */; i++) {
+
+            if (i >= part->nelts) {
+                if (part->next == NULL) {
+                    break;
+                }
+
+                part = part->next;
+                header = part->elts;
+                i = 0;
+            }
+
+            len = sizeof("HTTP_") - 1 + header[i].key.len;
+            if (len > 127) {
+                *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80);
+                *b->last++ = (u_char) ((len >> 16) & 0xff);
+                *b->last++ = (u_char) ((len >> 8) & 0xff);
+                *b->last++ = (u_char) (len & 0xff);
+
+            } else {
+                *b->last++ = (u_char) len;
+            }
+
+            len = header[i].value.len;
+            if (len > 127) {
+                *b->last++ = (u_char) (((len >> 24) & 0x7f) | 0x80);
+                *b->last++ = (u_char) ((len >> 16) & 0xff);
+                *b->last++ = (u_char) ((len >> 8) & 0xff);
+                *b->last++ = (u_char) (len & 0xff);
+
+            } else {
+                *b->last++ = (u_char) len;
+            }
+
+            b->last = ngx_cpymem(b->last, "HTTP_", sizeof("HTTP_") - 1);
+
+            for (n = 0; n < header[i].key.len; n++) {
+                ch = header[i].key.data[n];
+
+                if (ch >= 'a' && ch <= 'z') {
+                    ch &= ~0x20;
+
+                } else if (ch == '-') {
+                    ch = '_';
+                }
+
+                *b->last++ = ch;
+            }
+
+            b->last = ngx_copy(b->last, header[i].value.data,
+                               header[i].value.len);
+        }
+    }
+
+
+    if (padding) {
+        ngx_memzero(b->last, padding);
+        b->last += padding;
+    }
+
+
+    h = (ngx_http_fastcgi_header_t *) b->last;
+    b->last += sizeof(ngx_http_fastcgi_header_t);
+
+    h->version = 1;
+    h->type = NGX_HTTP_FASTCGI_PARAMS;
+    h->request_id_hi = 0;
+    h->request_id_lo = 1;
+    h->content_length_hi = 0;
+    h->content_length_lo = 0;
+    h->padding_length = 0;
+    h->reserved = 0;
+
+    h = (ngx_http_fastcgi_header_t *) b->last;
+    b->last += sizeof(ngx_http_fastcgi_header_t);
+
+    if (flcf->upstream.pass_request_body) {
+        body = r->upstream->request_bufs;
+        r->upstream->request_bufs = cl;
+
+#if (NGX_SUPPRESS_WARN)
+        file_pos = 0;
+        pos = NULL;
+#endif
+
+        while (body) {
+
+            if (body->buf->in_file) {
+                file_pos = body->buf->file_pos;
+
+            } else {
+                pos = body->buf->pos;
+            }
+
+            next = 0;
+
+            do {
+                b = ngx_alloc_buf(r->pool);
+                if (b == NULL) {
+                    return NGX_ERROR;
+                }
+
+                ngx_memcpy(b, body->buf, sizeof(ngx_buf_t));
+
+                if (body->buf->in_file) {
+                    b->file_pos = file_pos;
+                    file_pos += 32 * 1024;
+
+                    if (file_pos > body->buf->file_last) {
+                        file_pos = body->buf->file_last;
+                        next = 1;
+                    }
+
+                    b->file_last = file_pos;
+                    len = (ngx_uint_t) (file_pos - b->file_pos);
+
+                } else {
+                    b->pos = pos;
+                    pos += 32 * 1024;
+
+                    if (pos > body->buf->last) {
+                        pos = body->buf->last;
+                        next = 1;
+                    }
+
+                    b->last = pos;
+                    len = (ngx_uint_t) (pos - b->pos);
+                }
+
+                padding = 8 - len % 8;
+                padding = (padding == 8) ? 0 : padding;
+
+                h->version = 1;
+                h->type = NGX_HTTP_FASTCGI_STDIN;
+                h->request_id_hi = 0;
+                h->request_id_lo = 1;
+                h->content_length_hi = (u_char) ((len >> 8) & 0xff);
+                h->content_length_lo = (u_char) (len & 0xff);
+                h->padding_length = (u_char) padding;
+                h->reserved = 0;
+
+                cl->next = ngx_alloc_chain_link(r->pool);
+                if (cl->next == NULL) {
+                    return NGX_ERROR;
+                }
+
+                cl = cl->next;
+                cl->buf = b;
+
+                b = ngx_create_temp_buf(r->pool,
+                                        sizeof(ngx_http_fastcgi_header_t)
+                                        + padding);
+                if (b == NULL) {
+                    return NGX_ERROR;
+                }
+
+                if (padding) {
+                    ngx_memzero(b->last, padding);
+                    b->last += padding;
+                }
+
+                h = (ngx_http_fastcgi_header_t *) b->last;
+                b->last += sizeof(ngx_http_fastcgi_header_t);
+
+                cl->next = ngx_alloc_chain_link(r->pool);
+                if (cl->next == NULL) {
+                    return NGX_ERROR;
+                }
+
+                cl = cl->next;
+                cl->buf = b;
+
+            } while (!next);
+
+            body = body->next;
+        }
+
+    } else {
+        r->upstream->request_bufs = cl;
+    }
+
+    h->version = 1;
+    h->type = NGX_HTTP_FASTCGI_STDIN;
+    h->request_id_hi = 0;
+    h->request_id_lo = 1;
+    h->content_length_hi = 0;
+    h->content_length_lo = 0;
+    h->padding_length = 0;
+    h->reserved = 0;
+
+    cl->next = NULL;
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_fastcgi_reinit_request(ngx_http_request_t *r)
+{
+    ngx_http_fastcgi_ctx_t  *f;
+
+    f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
+
+    if (f == NULL) {
+        return NGX_OK;
+    }
+
+    f->state = ngx_http_fastcgi_st_version;
+    f->header = 0;
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_fastcgi_process_header(ngx_http_request_t *r)
+{
+    u_char                         *start, *last;
+    ngx_str_t                      *status_line, line;
+    ngx_int_t                       rc, status;
+    ngx_uint_t                      key;
+    ngx_table_elt_t                *h;
+    ngx_http_upstream_t            *u;
+    ngx_http_fastcgi_ctx_t         *f;
+    ngx_http_upstream_header_t     *hh;
+    ngx_http_upstream_main_conf_t  *umcf;
+
+    f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
+
+    umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
+    hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
+
+    if (f == NULL) {
+        f = ngx_pcalloc(r->pool, sizeof(ngx_http_fastcgi_ctx_t));
+        if (f == NULL) {
+            return NGX_HTTP_INTERNAL_SERVER_ERROR;
+        }
+
+        ngx_http_set_ctx(r, f, ngx_http_fastcgi_module);
+    }
+
+    u = r->upstream;
+
+    for ( ;; ) {
+
+        if (f->state < ngx_http_fastcgi_st_data) {
+
+            f->pos = u->buffer.pos;
+            f->last = u->buffer.last;
+
+            rc = ngx_http_fastcgi_process_record(r, f);
+
+            u->buffer.pos = f->pos;
+            u->buffer.last = f->last;
+
+            if (rc == NGX_AGAIN) {
+                return NGX_AGAIN;
+            }
+
+            if (rc == NGX_ERROR) {
+                return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+            }
+
+            if (f->type != NGX_HTTP_FASTCGI_STDOUT
+                && f->type != NGX_HTTP_FASTCGI_STDERR)
+            {
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "upstream sent unexpected FastCGI record: %d",
+                              f->type);
+
+                return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+            }
+
+            if (f->type == NGX_HTTP_FASTCGI_STDOUT && f->length == 0) {
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "upstream closed prematurely FastCGI stdout");
+
+                return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+            }
+        }
+
+        if (f->state == ngx_http_fastcgi_st_padding) {
+
+            if (u->buffer.pos + f->padding < u->buffer.last) {
+                f->state = ngx_http_fastcgi_st_version;
+                u->buffer.pos += f->padding;
+
+                continue;
+            }
+
+            if (u->buffer.pos + f->padding == u->buffer.last) {
+                f->state = ngx_http_fastcgi_st_version;
+                u->buffer.pos = u->buffer.last;
+
+                return NGX_AGAIN;
+            }
+
+            f->padding -= u->buffer.last - u->buffer.pos;
+            u->buffer.pos = u->buffer.last;
+
+            return NGX_AGAIN;
+        }
+
+
+        /* f->state == ngx_http_fastcgi_st_data */
+
+        if (f->type == NGX_HTTP_FASTCGI_STDERR) {
+
+            if (f->header) {
+                ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
+                              "upstream split a header in FastCGI records");
+
+                return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+            }
+
+            if (f->length) {
+                line.data = u->buffer.pos;
+
+                if (u->buffer.pos + f->length <= u->buffer.last) {
+                    line.len = f->length;
+                    u->buffer.pos += f->length;
+                    f->length = 0;
+                    f->state = ngx_http_fastcgi_st_padding;
+
+                } else {
+                    line.len = u->buffer.last - u->buffer.pos;
+                    f->length -= u->buffer.last - u->buffer.pos;
+                    u->buffer.pos = u->buffer.last;
+                }
+
+                while (line.data[line.len - 1] == LF
+                       || line.data[line.len - 1] == CR
+                       || line.data[line.len - 1] == '.'
+                       || line.data[line.len - 1] == ' ')
+                {
+                    line.len--;
+                }
+
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "FastCGI sent in stderr: \"%V\"", &line);
+
+                if (u->buffer.pos == u->buffer.last) {
+                    return NGX_AGAIN;
+                }
+
+            } else {
+                f->state = ngx_http_fastcgi_st_version;
+            }
+
+            continue;
+        }
+
+
+        /* f->type == NGX_HTTP_FASTCGI_STDOUT */
+
+        start = u->buffer.pos;
+
+        if (u->buffer.pos + f->length < u->buffer.last) {
+
+            /*
+             * set u->buffer.last to the end of the FastCGI record data
+             * for ngx_http_parse_header_line()
+             */
+
+            last = u->buffer.last;
+            u->buffer.last = u->buffer.pos + f->length;
+
+        } else {
+            last = NULL;
+        }
+
+        f->header = 1;
+
+        for ( ;; ) {
+
+            rc = ngx_http_parse_header_line(r, &u->buffer);
+
+            ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                           "http fastcgi parser: %d", rc);
+
+            if (rc == NGX_AGAIN) {
+                break;
+            }
+
+            if (rc == NGX_OK) {
+
+                /* a header line has been parsed successfully */
+
+                h = ngx_list_push(&u->headers_in.headers);
+                if (h == NULL) {
+                    return NGX_HTTP_INTERNAL_SERVER_ERROR;
+                }
+
+                h->hash = r->header_hash;
+
+                h->key.len = r->header_name_end - r->header_name_start;
+                h->value.len = r->header_end - r->header_start;
+
+                h->key.data = ngx_palloc(r->pool,
+                                         h->key.len + 1 + h->value.len + 1);
+                if (h->key.data == NULL) {
+                    return NGX_HTTP_INTERNAL_SERVER_ERROR;
+                }
+
+                h->value.data = h->key.data + h->key.len + 1;
+
+                ngx_cpystrn(h->key.data, r->header_name_start, h->key.len + 1);
+                ngx_cpystrn(h->value.data, r->header_start, h->value.len + 1);
+
+                key = h->hash % umcf->headers_in_hash.hash_size;
+
+                if (hh[key].name.len == h->key.len
+                    && ngx_strcasecmp(hh[key].name.data, h->key.data) == 0)
+                {
+                    if (hh[key].handler(r, h, hh[key].offset) != NGX_OK) {
+                        return NGX_HTTP_INTERNAL_SERVER_ERROR;
+                    }
+                }
+
+                ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                               "http fastcgi header: \"%V: %V\"",
+                               &h->key, &h->value);
+
+                continue;
+            }
+
+            if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
+
+                /* a whole header has been parsed successfully */
+
+                ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                               "http fastcgi header done");
+
+                if (u->headers_in.status) {
+                    status_line = &u->headers_in.status->value;
+
+                    status = ngx_atoi(status_line->data, 3);
+
+                    if (status == NGX_ERROR) {
+                        return NGX_HTTP_INTERNAL_SERVER_ERROR;
+                    }
+
+                    u->headers_in.status_n = status;
+                    u->headers_in.status_line = *status_line;
+
+                } else {
+                    u->headers_in.status_n = 200;
+                    u->headers_in.status_line.len = sizeof("200 OK") - 1;
+                    u->headers_in.status_line.data = (u_char *) "200 OK";
+                }
+
+                u->state->status = u->headers_in.status_n;
+#if 0
+                if (u->cachable) {
+                    u->cachable = ngx_http_upstream_is_cachable(r);
+                }
+#endif
+
+                break;
+            }
+
+            /* there was error while a header line parsing */
+
+            ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                          ngx_http_upstream_header_errors[rc
+                                                - NGX_HTTP_PARSE_HEADER_ERROR]);
+
+            return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+
+        }
+
+        if (last) {
+            u->buffer.last = last;
+        }
+
+        f->length -= u->buffer.pos - start;
+
+        if (rc == NGX_AGAIN) {
+            if (u->buffer.pos == u->buffer.last) {
+                return NGX_AGAIN;
+            }
+        }
+
+        if (f->length == 0) {
+            if (f->padding) {
+                f->state = ngx_http_fastcgi_st_padding;
+            } else {
+                f->state = ngx_http_fastcgi_st_version;
+            }
+        }
+
+        return NGX_OK;
+    }
+}
+
+
+static ngx_int_t
+ngx_http_fastcgi_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
+{
+    ngx_int_t                rc;
+    ngx_buf_t               *b, **prev;
+    ngx_str_t                line;
+    ngx_chain_t             *cl;
+    ngx_http_request_t      *r;
+    ngx_http_fastcgi_ctx_t  *f;
+
+    if (buf->pos == buf->last) {
+        return NGX_OK;
+    }
+
+    r = p->input_ctx;
+    f = ngx_http_get_module_ctx(r, ngx_http_fastcgi_module);
+
+    b = NULL;
+    prev = &buf->shadow;
+
+    f->pos = buf->pos;
+    f->last = buf->last;
+
+    for ( ;; ) {
+        if (f->state < ngx_http_fastcgi_st_data) {
+
+            rc = ngx_http_fastcgi_process_record(r, f);
+
+            if (rc == NGX_AGAIN) {
+                break;
+            }
+
+            if (rc == NGX_ERROR) {
+                return NGX_ERROR;
+            }
+
+            if (f->type == NGX_HTTP_FASTCGI_STDOUT && f->length == 0) {
+                f->state = ngx_http_fastcgi_st_version;
+                p->upstream_done = 1;
+
+                ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0,
+                               "http fastcgi closed stdout");
+
+                continue;
+            }
+
+            if (f->type == NGX_HTTP_FASTCGI_END_REQUEST) {
+                f->state = ngx_http_fastcgi_st_version;
+                p->upstream_done = 1;
+
+                ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0,
+                               "http fastcgi sent end request");
+
+                break;
+            }
+        }
+
+
+        if (f->state == ngx_http_fastcgi_st_padding) {
+
+            if (f->pos + f->padding < f->last) {
+                f->state = ngx_http_fastcgi_st_version;
+                f->pos += f->padding;
+
+                continue;
+            }
+
+            if (f->pos + f->padding == f->last) {
+                f->state = ngx_http_fastcgi_st_version;
+
+                break;
+            }
+
+            f->padding -= f->last - f->pos;
+
+            break;
+        }
+
+
+        /* f->state == ngx_http_fastcgi_st_data */
+
+        if (f->type == NGX_HTTP_FASTCGI_STDERR) {
+
+            if (f->length) {
+                line.data = f->pos;
+
+                if (f->pos + f->length <= f->last) {
+                    line.len = f->length;
+                    f->pos += f->length;
+                    f->length = 0;
+                    f->state = ngx_http_fastcgi_st_padding;
+
+                } else {
+                    line.len = f->last - f->pos;
+                    f->length -= f->last - f->pos;
+                    f->pos = f->last;
+                }
+
+                while (line.data[line.len - 1] == LF
+                       || line.data[line.len - 1] == CR
+                       || line.data[line.len - 1] == '.'
+                       || line.data[line.len - 1] == ' ')
+                {
+                    line.len--;
+                }
+
+                ngx_log_error(NGX_LOG_ERR, p->log, 0,
+                              "FastCGI sent in stderr: \"%V\"", &line);
+
+                if (f->pos == f->last) {
+                    break;
+                }
+
+            } else {
+                f->state = ngx_http_fastcgi_st_version;
+            }
+
+            continue;
+        }
+
+
+        /* f->type == NGX_HTTP_FASTCGI_STDOUT */
+
+        if (p->free) {
+            b = p->free->buf;
+            p->free = p->free->next;
+
+        } else {
+            b = ngx_alloc_buf(p->pool);
+            if (b == NULL) {
+                return NGX_ERROR;
+            }
+        }
+
+        ngx_memzero(b, sizeof(ngx_buf_t));
+
+        b->pos = f->pos;
+        b->start = buf->start;
+        b->end = buf->end;
+        b->tag = p->tag;
+        b->temporary = 1;
+        b->recycled = 1;
+
+        *prev = b;
+        prev = &b->shadow;
+
+        cl = ngx_alloc_chain_link(p->pool);
+        if (cl == NULL) {
+            return NGX_ERROR;
+        }
+
+        cl->buf = b;
+        cl->next = NULL;
+
+        if (p->in) {
+            *p->last_in = cl;
+        } else {
+            p->in = cl;
+        }
+        p->last_in = &cl->next;
+
+
+        /* STUB */ b->num = buf->num;
+
+        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "input buf #%d", b->num);
+
+
+        if (f->pos + f->length < f->last) {
+
+            if (f->padding) {
+                f->state = ngx_http_fastcgi_st_padding;
+            } else {
+                f->state = ngx_http_fastcgi_st_version;
+            }
+
+            f->pos += f->length;
+            b->last = f->pos;
+
+            continue;
+        }
+
+        if (f->pos + f->length == f->last) {
+
+            if (f->padding) {
+                f->state = ngx_http_fastcgi_st_padding;
+            } else {
+                f->state = ngx_http_fastcgi_st_version;
+            }
+
+            b->last = f->last;
+
+            break;
+        }
+
+        f->length -= f->last - f->pos;
+
+        b->last = f->last;
+
+        break;
+
+    }
+
+    if (b) {
+        b->shadow = buf;
+        b->last_shadow = 1;
+
+        return NGX_OK;
+    }
+
+    /* there is no data record in the buf, add it to free chain */
+
+    if (ngx_event_pipe_add_free_buf(p, buf) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_fastcgi_process_record(ngx_http_request_t *r,
+    ngx_http_fastcgi_ctx_t *f)
+{
+    u_char                     ch, *p;
+    ngx_http_fastcgi_state_e   state;
+
+    state = f->state;
+
+    for (p = f->pos; p < f->last; p++) {
+
+        ch = *p;
+
+        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "http fastcgi record byte: %02Xd", ch);
+
+        switch (state) {
+
+        case ngx_http_fastcgi_st_version:
+            if (ch != 1) {
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "upstream sent unsupported FastCGI "
+                              "protocol version: %d", ch);
+                return NGX_ERROR;
+            }
+            state = ngx_http_fastcgi_st_type;
+            break;
+
+        case ngx_http_fastcgi_st_type:
+            switch (ch) {
+            case NGX_HTTP_FASTCGI_STDOUT:
+            case NGX_HTTP_FASTCGI_STDERR:
+            case NGX_HTTP_FASTCGI_END_REQUEST:
+                 f->type = (ngx_uint_t) ch;
+                 break;
+            default:
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "upstream sent invalid FastCGI "
+                              "record type: %d", ch);
+                return NGX_ERROR;
+
+            }
+            state = ngx_http_fastcgi_st_request_id_hi;
+            break;
+
+        /* we support the single request per connection */
+
+        case ngx_http_fastcgi_st_request_id_hi:
+            if (ch != 0) {
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "upstream sent unexpected FastCGI "
+                              "request id high byte: %d", ch);
+                return NGX_ERROR;
+            }
+            state = ngx_http_fastcgi_st_request_id_lo;
+            break;
+
+        case ngx_http_fastcgi_st_request_id_lo:
+            if (ch != 1) {
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "upstream sent unexpected FastCGI "
+                              "request id low byte: %d", ch);
+                return NGX_ERROR;
+            }
+            state = ngx_http_fastcgi_st_content_length_hi;
+            break;
+
+        case ngx_http_fastcgi_st_content_length_hi:
+            f->length = ch << 8;
+            state = ngx_http_fastcgi_st_content_length_lo;
+            break;
+
+        case ngx_http_fastcgi_st_content_length_lo:
+            f->length |= (size_t) ch;
+            state = ngx_http_fastcgi_st_padding_length;
+            break;
+
+        case ngx_http_fastcgi_st_padding_length:
+            f->padding = (size_t) ch;
+            state = ngx_http_fastcgi_st_reserved;
+            break;
+
+        case ngx_http_fastcgi_st_reserved:
+            state = ngx_http_fastcgi_st_data;
+
+            ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                           "http fastcgi record length: %z", f->length);
+
+            f->pos = p + 1;
+            f->state = state;
+
+            return NGX_OK;
+
+        /* suppress warning */
+        case ngx_http_fastcgi_st_data:
+        case ngx_http_fastcgi_st_padding:
+            break;
+        }
+    }
+
+    f->state = state;
+
+    return NGX_AGAIN;
+}
+
+
+static void
+ngx_http_fastcgi_abort_request(ngx_http_request_t *r)
+{
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "abort http fastcgi request");
+
+    return;
+}
+
+
+static void
+ngx_http_fastcgi_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
+{
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "finalize http fastcgi request");
+
+    return;
+}
+
+
+static ngx_int_t
+ngx_http_fastcgi_add_variables(ngx_conf_t *cf)
+{
+    ngx_http_variable_t  *var;
+
+    var = ngx_http_add_variable(cf, &ngx_http_fastcgi_script_name,
+                                NGX_HTTP_VAR_NOHASH);
+    if (var == NULL) {
+        return NGX_ERROR;
+    }
+
+    var->handler = ngx_http_fastcgi_script_name_variable;
+
+    return NGX_OK;
+}
+
+
+static void *
+ngx_http_fastcgi_create_loc_conf(ngx_conf_t *cf)
+{
+    ngx_http_fastcgi_loc_conf_t  *conf;
+
+    conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_fastcgi_loc_conf_t));
+    if (conf == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    /*
+     * set by ngx_pcalloc():
+     *
+     *     conf->upstream.bufs.num = 0;
+     *     conf->upstream.path = NULL;
+     *     conf->upstream.next_upstream = 0;
+     *     conf->upstream.temp_path = NULL;
+     *     conf->upstream.schema = { 0, NULL };
+     *     conf->upstream.uri = { 0, NULL };
+     *     conf->upstream.location = NULL;
+     *
+     *     conf->index.len = 0;
+     *     conf->index.data = NULL;
+     */
+
+    conf->upstream.buffering = NGX_CONF_UNSET;
+
+    conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC;
+    conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC;
+    conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC;
+
+    conf->upstream.send_lowat = NGX_CONF_UNSET_SIZE;
+    conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE;
+
+    conf->upstream.busy_buffers_size_conf = NGX_CONF_UNSET_SIZE;
+    conf->upstream.max_temp_file_size_conf = NGX_CONF_UNSET_SIZE;
+    conf->upstream.temp_file_write_size_conf = NGX_CONF_UNSET_SIZE;
+
+    conf->upstream.max_fails = NGX_CONF_UNSET_UINT;
+    conf->upstream.fail_timeout = NGX_CONF_UNSET;
+
+    conf->upstream.pass_request_headers = NGX_CONF_UNSET;
+    conf->upstream.pass_request_body = NGX_CONF_UNSET;
+
+    conf->upstream.redirect_errors = NGX_CONF_UNSET;
+
+    /* "fastcgi_cyclic_temp_file" is disabled */
+    conf->upstream.cyclic_temp_file = 0;
+
+    conf->upstream.pass_x_powered_by = NGX_CONF_UNSET;
+
+    /* the hardcoded values */
+    conf->upstream.pass_server = 1;
+    conf->upstream.pass_date = 1;
+
+    return conf;
+}
+
+
+static char *
+ngx_http_fastcgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
+{
+    ngx_http_fastcgi_loc_conf_t *prev = parent;
+    ngx_http_fastcgi_loc_conf_t *conf = child;
+
+    u_char                       *p;
+    size_t                        size;
+    uintptr_t                    *code;
+    ngx_uint_t                    i;
+    ngx_table_elt_t              *src;
+    ngx_http_script_compile_t     sc;
+    ngx_http_script_copy_code_t  *copy;
+
+    ngx_conf_merge_value(conf->upstream.buffering,
+                              prev->upstream.buffering, 1);
+
+    ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
+                              prev->upstream.connect_timeout, 60000);
+
+    ngx_conf_merge_msec_value(conf->upstream.send_timeout,
+                              prev->upstream.send_timeout, 60000);
+
+    ngx_conf_merge_msec_value(conf->upstream.read_timeout,
+                              prev->upstream.read_timeout, 60000);
+
+    ngx_conf_merge_size_value(conf->upstream.send_lowat,
+                              prev->upstream.send_lowat, 0);
+
+    ngx_conf_merge_size_value(conf->upstream.buffer_size,
+                              prev->upstream.buffer_size,
+                              (size_t) ngx_pagesize);
+
+
+    ngx_conf_merge_bufs_value(conf->upstream.bufs, prev->upstream.bufs,
+                              8, ngx_pagesize);
+
+    if (conf->upstream.bufs.num < 2) {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                           "there must be at least 2 \"fastcgi_buffers\"");
+        return NGX_CONF_ERROR;
+    }
+
+
+    size = conf->upstream.buffer_size;
+    if (size < conf->upstream.bufs.size) {
+        size = conf->upstream.bufs.size;
+    }
+
+
+    ngx_conf_merge_size_value(conf->upstream.busy_buffers_size_conf,
+                              prev->upstream.busy_buffers_size_conf,
+                              NGX_CONF_UNSET_SIZE);
+
+    if (conf->upstream.busy_buffers_size_conf == NGX_CONF_UNSET_SIZE) {
+        conf->upstream.busy_buffers_size = 2 * size;
+    } else {
+        conf->upstream.busy_buffers_size =
+                                         conf->upstream.busy_buffers_size_conf;
+    }
+
+    if (conf->upstream.busy_buffers_size < size) {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+             "\"fastcgi_busy_buffers_size\" must be equal or bigger than "
+             "maximum of the value of \"fastcgi_header_buffer_size\" and "
+             "one of the \"fastcgi_buffers\"");
+
+        return NGX_CONF_ERROR;
+    }
+
+    if (conf->upstream.busy_buffers_size
+        > (conf->upstream.bufs.num - 1) * conf->upstream.bufs.size)
+    {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+             "\"fastcgi_busy_buffers_size\" must be less than "
+             "the size of all \"fastcgi_buffers\" minus one buffer");
+
+        return NGX_CONF_ERROR;
+    }
+
+
+    ngx_conf_merge_size_value(conf->upstream.temp_file_write_size_conf,
+                              prev->upstream.temp_file_write_size_conf,
+                              NGX_CONF_UNSET_SIZE);
+
+    if (conf->upstream.temp_file_write_size_conf == NGX_CONF_UNSET_SIZE) {
+        conf->upstream.temp_file_write_size = 2 * size;
+    } else {
+        conf->upstream.temp_file_write_size =
+                                      conf->upstream.temp_file_write_size_conf;
+    }
+
+    if (conf->upstream.temp_file_write_size < size) {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+             "\"fastcgi_temp_file_write_size\" must be equal or bigger than "
+             "maximum of the value of \"fastcgi_header_buffer_size\" and "
+             "one of the \"fastcgi_buffers\"");
+
+        return NGX_CONF_ERROR;
+    }
+
+
+    ngx_conf_merge_size_value(conf->upstream.max_temp_file_size_conf,
+                              prev->upstream.max_temp_file_size_conf,
+                              NGX_CONF_UNSET_SIZE);
+
+    if (conf->upstream.max_temp_file_size_conf == NGX_CONF_UNSET_SIZE) {
+        conf->upstream.max_temp_file_size = 1024 * 1024 * 1024;
+    } else {
+        conf->upstream.max_temp_file_size =
+                                        conf->upstream.max_temp_file_size_conf;
+    }
+
+    if (conf->upstream.max_temp_file_size != 0
+        && conf->upstream.max_temp_file_size < size)
+    {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+             "\"fastcgi_max_temp_file_size\" must be equal to zero to disable "
+             "the temporary files usage or must be equal or bigger than "
+             "maximum of the value of \"fastcgi_header_buffer_size\" and "
+             "one of the \"fastcgi_buffers\"");
+
+        return NGX_CONF_ERROR;
+    }
+
+
+    ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
+                              prev->upstream.next_upstream,
+                              (NGX_CONF_BITMASK_SET
+                               |NGX_HTTP_UPSTREAM_FT_ERROR
+                               |NGX_HTTP_UPSTREAM_FT_TIMEOUT));
+
+    ngx_conf_merge_unsigned_value(conf->upstream.max_fails,
+                              prev->upstream.max_fails, 1);
+
+    ngx_conf_merge_sec_value(conf->upstream.fail_timeout,
+                              prev->upstream.fail_timeout, 10);
+
+    if (conf->peers && conf->peers->number > 1) {
+        for (i = 0; i < conf->peers->number; i++) {
+            conf->peers->peer[i].weight = 1;
+            conf->peers->peer[i].max_fails = conf->upstream.max_fails;
+            conf->peers->peer[i].fail_timeout = conf->upstream.fail_timeout;
+        }
+    }
+
+    ngx_conf_merge_path_value(conf->upstream.temp_path,
+                              prev->upstream.temp_path,
+                              NGX_HTTP_FASTCGI_TEMP_PATH, 1, 2, 0,
+                              ngx_garbage_collector_temp_handler, cf);
+
+    ngx_conf_merge_value(conf->upstream.pass_request_headers,
+                              prev->upstream.pass_request_headers, 1);
+    ngx_conf_merge_value(conf->upstream.pass_request_body,
+                              prev->upstream.pass_request_body, 1);
+
+    ngx_conf_merge_value(conf->upstream.redirect_errors,
+                              prev->upstream.redirect_errors, 0);
+
+    ngx_conf_merge_value(conf->upstream.pass_x_powered_by,
+                              prev->upstream.pass_x_powered_by, 1);
+
+
+    ngx_conf_merge_str_value(conf->index, prev->index, "");
+
+    if (conf->peers == NULL) {
+        conf->peers = prev->peers;
+    }
+
+    if (conf->params_source == NULL) {
+        conf->flushes = prev->flushes;
+        conf->params_len = prev->params_len;
+        conf->params = prev->params;
+        conf->params_source = prev->params_source;
+
+        if (conf->params_source == NULL) {
+            return NGX_CONF_OK;
+        }
+    }
+
+    conf->params_len = ngx_array_create(cf->pool, 64, 1);
+    if (conf->params_len == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    conf->params = ngx_array_create(cf->pool, 512, 1);
+    if (conf->params == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    src = conf->params_source->elts;
+    for (i = 0; i < conf->params_source->nelts; i++) {
+
+        if (ngx_http_script_variables_count(&src[i].value) == 0) {
+            copy = ngx_array_push_n(conf->params_len,
+                                    sizeof(ngx_http_script_copy_code_t));
+            if (copy == NULL) {
+                return NGX_CONF_ERROR;
+            }
+
+            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_CONF_ERROR;
+            }
+
+            copy->code = (ngx_http_script_code_pt)
+                                                 ngx_http_script_copy_len_code;
+            copy->len = src[i].value.len;
+
+
+            size = (sizeof(ngx_http_script_copy_code_t)
+                       + src[i].key.len + src[i].value.len
+                       + sizeof(uintptr_t) - 1)
+                    & ~(sizeof(uintptr_t) - 1);
+
+            copy = ngx_array_push_n(conf->params, size);
+            if (copy == NULL) {
+                return NGX_CONF_ERROR;
+            }
+
+            copy->code = ngx_http_script_copy_code;
+            copy->len = src[i].key.len + src[i].value.len;
+
+            p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
+
+            p = ngx_cpymem(p, src[i].key.data, src[i].key.len);
+            ngx_memcpy(p, src[i].value.data, src[i].value.len);
+
+        } else {
+            copy = ngx_array_push_n(conf->params_len,
+                                    sizeof(ngx_http_script_copy_code_t));
+            if (copy == NULL) {
+                return NGX_CONF_ERROR;
+            }
+
+            copy->code = (ngx_http_script_code_pt)
+                                                 ngx_http_script_copy_len_code;
+            copy->len = src[i].key.len;
+
+
+            size = (sizeof(ngx_http_script_copy_code_t)
+                    + src[i].key.len + sizeof(uintptr_t) - 1)
+                    & ~(sizeof(uintptr_t) - 1);
+
+            copy = ngx_array_push_n(conf->params, size);
+            if (copy == NULL) {
+                return NGX_CONF_ERROR;
+            }
+
+            copy->code = ngx_http_script_copy_code;
+            copy->len = src[i].key.len;
+
+            p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
+            ngx_memcpy(p, src[i].key.data, src[i].key.len);
+
+
+            ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
+
+            sc.cf = cf;
+            sc.source = &src[i].value;
+            sc.flushes = &conf->flushes;
+            sc.lengths = &conf->params_len;
+            sc.values = &conf->params;
+
+            if (ngx_http_script_compile(&sc) != NGX_OK) {
+                return NGX_CONF_ERROR;
+            }
+        }
+
+        code = ngx_array_push_n(conf->params_len, sizeof(uintptr_t));
+        if (code == NULL) {
+            return NGX_CONF_ERROR;
+        }
+
+        *code = (uintptr_t) NULL;
+
+
+        code = ngx_array_push_n(conf->params, sizeof(uintptr_t));
+        if (code == NULL) {
+            return NGX_CONF_ERROR;
+        }
+
+        *code = (uintptr_t) NULL;
+    }
+
+    code = ngx_array_push_n(conf->params_len, sizeof(uintptr_t));
+    if (code == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    *code = (uintptr_t) NULL;
+
+    return NGX_CONF_OK;
+}
+
+
+static ngx_int_t
+ngx_http_fastcgi_script_name_variable(ngx_http_request_t *r,
+    ngx_http_variable_value_t *v, uintptr_t data)
+{
+    u_char                       *p;
+    ngx_http_fastcgi_loc_conf_t  *flcf;
+
+    v->valid = 1;
+    v->no_cachable = 0;
+    v->not_found = 0;
+
+    flcf = ngx_http_get_module_loc_conf(r, ngx_http_fastcgi_module);
+
+    if (r->uri.data[r->uri.len - 1] != '/') {
+        v->len = r->uri.len;
+        v->data = r->uri.data;
+        return NGX_OK;
+    }
+
+    v->len = r->uri.len + flcf->index.len;
+
+    v->data = ngx_palloc(r->pool, v->len);
+    if (v->data == NULL) {
+        return NGX_ERROR;
+    }
+
+    p = ngx_copy(v->data, r->uri.data, r->uri.len);
+    ngx_memcpy(p, flcf->index.data, flcf->index.len);
+
+    return NGX_OK;
+}
+
+
+static char *
+ngx_http_fastcgi_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+    ngx_http_fastcgi_loc_conf_t *lcf = conf;
+
+    ngx_str_t                   *value;
+    ngx_inet_upstream_t          inet_upstream;
+    ngx_http_core_loc_conf_t    *clcf;
+#if (NGX_HAVE_UNIX_DOMAIN)
+    ngx_unix_domain_upstream_t   unix_upstream;
+#endif
+
+    if (lcf->upstream.schema.len) {
+        return "is duplicate";
+    }
+
+    value = cf->args->elts;
+
+    if (ngx_strncasecmp(value[1].data, "unix:", 5) == 0) {
+
+#if (NGX_HAVE_UNIX_DOMAIN)
+
+        ngx_memzero(&unix_upstream, sizeof(ngx_unix_domain_upstream_t));
+
+        unix_upstream.name = value[1];
+        unix_upstream.url = value[1];
+
+        lcf->peers = ngx_unix_upstream_parse(cf, &unix_upstream);
+        if (lcf->peers == NULL) {
+            return NGX_CONF_ERROR;
+        }
+
+        lcf->peers->peer[0].uri_separator = "";
+
+#else
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                           "the unix domain sockets are not supported "
+                           "on this platform");
+        return NGX_CONF_ERROR;
+
+#endif
+
+    } else {
+        ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t));
+
+        inet_upstream.name = value[1];
+        inet_upstream.url = value[1];
+
+        lcf->peers = ngx_inet_upstream_parse(cf, &inet_upstream);
+        if (lcf->peers == NULL) {
+            return NGX_CONF_ERROR;
+        }
+    }
+
+    lcf->upstream.schema.len = sizeof("fastcgi://") - 1;
+    lcf->upstream.schema.data = (u_char *) "fastcgi://";
+
+    clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
+
+    clcf->handler = ngx_http_fastcgi_handler;
+
+    lcf->upstream.location = clcf->name;
+
+    if (clcf->name.data[clcf->name.len - 1] == '/') {
+        clcf->auto_redirect = 1;
+    }
+
+    return NGX_CONF_OK;
+}
+
+
+static char *
+ngx_http_fastcgi_lowat_check(ngx_conf_t *cf, void *post, void *data)
+{
+#if (NGX_FREEBSD)
+    ssize_t *np = data;
+
+    if (*np >= ngx_freebsd_net_inet_tcp_sendspace) {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                           "\"fastcgi_send_lowat\" must be less than %d "
+                           "(sysctl net.inet.tcp.sendspace)",
+                           ngx_freebsd_net_inet_tcp_sendspace);
+
+        return NGX_CONF_ERROR;
+    }
+
+#elif !(NGX_HAVE_SO_SNDLOWAT)
+    ssize_t *np = data;
+
+    ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
+                       "\"fastcgi_send_lowat\" is not supported, ignored");
+
+    *np = 0;
+
+#endif
+
+    return NGX_CONF_OK;
+}
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index b97515cc3..348c84bfc 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -1396,7 +1396,6 @@ ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
         || rc == NGX_HTTP_REQUEST_TIME_OUT
         || r->connection->error)
     {
-
         if (ngx_http_post_action(r) == NGX_OK) {
             return;
         }
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index cb5528371..e73b3b379 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -283,8 +283,12 @@ ngx_http_upstream_init(ngx_http_request_t *r)
         ngx_del_timer(c->read);
     }
 
-    r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
-    r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
+    if (!(r->http_version == NGX_HTTP_VERSION_9 && r->header_only)) {
+        /* not a post_action */
+
+        r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
+        r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
+    }
 
     if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {