connection.patch

Backported from tengine

"received" struct member added for ngx_connection_s

--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -463,6 +463,7 @@ ngx_http_wait_request_handler(ngx_event_
     }
 
     b->last += n;
+    c->received += n;
 
     if (hc->proxy_protocol) {
         hc->proxy_protocol = 0;
@@ -1406,6 +1407,7 @@ ngx_http_read_request_header(ngx_http_re
     }
 
     r->header_in->last += n;
+    c->received += n;
 
     return n;
 }
@@ -2920,6 +2922,10 @@ ngx_http_set_keepalive(ngx_http_request_
         c->data = r;
 
         c->sent = 0;
+
+        /* bytes in the buffer have already been counted */
+        c->received = 0;
+
         c->destroyed = 0;
 
         if (rev->timer_set) {
@@ -3173,6 +3179,7 @@ ngx_http_keepalive_handler(ngx_event_t *
     }
 
     c->sent = 0;
+    c->received = n;
     c->destroyed = 0;
 
     ngx_del_timer(rev);
@@ -3264,6 +3271,8 @@ ngx_http_lingering_close_handler(ngx_eve
             return;
         }
 
+        c->received += n;
+
     } while (rev->ready);
 
     if (ngx_handle_read_event(rev, 0) != NGX_OK) {
--- a/src/core/ngx_connection.h
+++ b/src/core/ngx_connection.h
@@ -130,6 +130,7 @@ struct ngx_connection_s {
     ngx_listening_t    *listening;
 
     off_t               sent;
+    off_t               received;
 
     ngx_log_t          *log;