diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index bfd812b..a08cada 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -361,6 +361,13 @@
       offsetof(ngx_http_core_loc_conf_t, client_body_in_file_only),
       &ngx_http_core_request_body_in_file },
 
+    { ngx_string("client_body_in_single_buffer"),
+      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_core_loc_conf_t, client_body_in_single_buffer),
+      NULL },
+
     { ngx_string("sendfile"),
       NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
                         |NGX_CONF_TAKE1,
@@ -1317,6 +1324,8 @@
         r->request_body_file_log_level = NGX_LOG_WARN;
     }
 
+    r->request_body_in_single_buf = clcf->client_body_in_single_buffer;
+
     if (r->keepalive && clcf->keepalive_timeout == 0) {
         r->keepalive = 0;
     }
@@ -2954,6 +2963,7 @@
     lcf->satisfy = NGX_CONF_UNSET_UINT;
     lcf->if_modified_since = NGX_CONF_UNSET_UINT;
     lcf->client_body_in_file_only = NGX_CONF_UNSET_UINT;
+    lcf->client_body_in_single_buffer = NGX_CONF_UNSET;
     lcf->internal = NGX_CONF_UNSET;
     lcf->sendfile = NGX_CONF_UNSET;
     lcf->sendfile_max_chunk = NGX_CONF_UNSET_SIZE;
@@ -3146,6 +3156,8 @@
                               NGX_HTTP_IMS_EXACT);
     ngx_conf_merge_uint_value(conf->client_body_in_file_only,
                               prev->client_body_in_file_only, 0);
+    ngx_conf_merge_value(conf->client_body_in_single_buffer,
+                              prev->client_body_in_single_buffer, 0);
     ngx_conf_merge_value(conf->internal, prev->internal, 0);
     ngx_conf_merge_value(conf->sendfile, prev->sendfile, 0);
     ngx_conf_merge_size_value(conf->sendfile_max_chunk,
diff --git a/src/http/ngx_http_core_module.h b/src/http/ngx_http_core_module.h
index 915b438..6abfc6e 100644
--- a/src/http/ngx_http_core_module.h
+++ b/src/http/ngx_http_core_module.h
@@ -341,6 +341,8 @@
     ngx_uint_t    if_modified_since;       /* if_modified_since */
     ngx_uint_t    client_body_in_file_only; /* client_body_in_file_only */
 
+    ngx_flag_t    client_body_in_single_buffer;
+                                           /* client_body_in_singe_buffer */
     ngx_flag_t    internal;                /* internal */
     ngx_flag_t    sendfile;                /* sendfile */
     ngx_flag_t    tcp_nopush;              /* tcp_nopush */