renamed the "nonbuffered-upstream-truncation" patch to "upstream-truncation" patch; also fixed issues with chunked upstream response bodies. thanks Andy Yuan for reporting this issue in #24.

patches/nginx-1.2.7-nonbuffered-upstream-truncation.patch

@@ -1,63 +0,0 @@
---- nginx-1.2.7/src/http/ngx_http_upstream.c	2012-08-06 10:34:08.000000000 -0700
-+++ nginx-1.2.7-patched/src/http/ngx_http_upstream.c	2012-09-09 21:58:04.727761891 -0700
-@@ -2383,7 +2383,7 @@
- 
-     if (c->read->timedout) {
-         ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
--        ngx_http_upstream_finalize_request(r, u, 0);
-+        ngx_http_upstream_finalize_request(r, u, NGX_HTTP_GATEWAY_TIME_OUT);
-         return;
-     }
- 
-@@ -2430,13 +2430,17 @@
-             if (u->busy_bufs == NULL) {
- 
-                 if (u->length == 0
--                    || upstream->read->eof
--                    || upstream->read->error)
-+                    || (upstream->read->eof && u->headers_in.content_length_n == -1))
-                 {
-                     ngx_http_upstream_finalize_request(r, u, 0);
-                     return;
-                 }
- 
-+                if (upstream->read->eof || upstream->read->error) {
-+                    ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
-+                    return;
-+                }
-+
-                 b->pos = b->start;
-                 b->last = b->start;
-             }
-@@ -2710,7 +2714,16 @@
- #if 0
-             ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
- #endif
--            ngx_http_upstream_finalize_request(r, u, 0);
-+
-+            if (p->upstream_done
-+                || (p->upstream_eof && u->headers_in.content_length_n == -1))
-+            {
-+                ngx_http_upstream_finalize_request(r, u, 0);
-+
-+            } else {
-+                ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
-+            }
-+
-             return;
-         }
-     }
-@@ -3073,6 +3086,13 @@
-         && rc != NGX_HTTP_REQUEST_TIME_OUT
-         && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
-     {
-+        if (rc == NGX_ERROR) {
-+            r->headers_out.status = NGX_HTTP_INTERNAL_SERVER_ERROR;
-+
-+        } else {
-+            r->headers_out.status = rc;
-+        }
-+
-         rc = 0;
-     }
- 

patches/nginx-1.2.7-upstream-truncation.patch

@@ -0,0 +1,83 @@
+--- nginx-1.2.7/src/http/ngx_http_upstream.c	2013-02-11 06:39:49.000000000 -0800
++++ nginx-1.2.7-patched/src/http/ngx_http_upstream.c	2013-04-04 18:18:09.749357094 -0700
+@@ -2399,7 +2399,7 @@ ngx_http_upstream_process_non_buffered_u
+ 
+     if (c->read->timedout) {
+         ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
+-        ngx_http_upstream_finalize_request(r, u, 0);
++        ngx_http_upstream_finalize_request(r, u, NGX_HTTP_GATEWAY_TIME_OUT);
+         return;
+     }
+ 
+@@ -2415,11 +2415,13 @@ ngx_http_upstream_process_non_buffered_r
+     ssize_t                    n;
+     ngx_buf_t                 *b;
+     ngx_int_t                  rc;
++    ngx_event_pipe_t          *p;
+     ngx_connection_t          *downstream, *upstream;
+     ngx_http_upstream_t       *u;
+     ngx_http_core_loc_conf_t  *clcf;
+ 
+     u = r->upstream;
++    p = u->pipe;
+     downstream = r->connection;
+     upstream = u->peer.connection;
+ 
+@@ -2446,13 +2448,19 @@ ngx_http_upstream_process_non_buffered_r
+             if (u->busy_bufs == NULL) {
+ 
+                 if (u->length == 0
+-                    || upstream->read->eof
+-                    || upstream->read->error)
++                    || (upstream->read->eof
++                        && u->length == -1
++                        && p->length == -1))
+                 {
+                     ngx_http_upstream_finalize_request(r, u, 0);
+                     return;
+                 }
+ 
++                if (upstream->read->eof || upstream->read->error) {
++                    ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
++                    return;
++                }
++
+                 b->pos = b->start;
+                 b->last = b->start;
+             }
+@@ -2720,7 +2728,9 @@ ngx_http_upstream_process_request(ngx_ht
+ 
+ #endif
+ 
+-        if (p->upstream_done || p->upstream_eof || p->upstream_error) {
++        if (p->upstream_done
++            || (p->upstream_eof && u->length == -1 && p->length == -1))
++        {
+             ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                            "http upstream exit: %p", p->out);
+ #if 0
+@@ -2729,6 +2739,14 @@ ngx_http_upstream_process_request(ngx_ht
+             ngx_http_upstream_finalize_request(r, u, 0);
+             return;
+         }
++
++        if (p->upstream_eof || p->upstream_error) {
++            ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
++                           "http upstream exit: %p", p->out);
++
++            ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
++            return;
++       }
+     }
+ 
+     if (p->downstream_error) {
+@@ -3087,7 +3105,8 @@ ngx_http_upstream_finalize_request(ngx_h
+ 
+     if (u->header_sent
+         && rc != NGX_HTTP_REQUEST_TIME_OUT
+-        && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
++        && rc != NGX_HTTP_GATEWAY_TIME_OUT
++        && rc >= NGX_HTTP_SPECIAL_RESPONSE)
+     {
+         rc = 0;
+     }

util/mirror-tarballs

@@ -109,8 +109,8 @@ echo "$info_txt applying the location_if_inherits_proxy patch for nginx"
 patch -p1 < $root/patches/nginx-$main_ver-location_if_inherits_proxy.patch || exit 1
 echo
 
-echo "$info_txt applying the nonbuffered-upstream-truncation patch for nginx"
+echo "$info_txt applying the upstream-truncation patch for nginx"
-patch -p1 < $root/patches/nginx-$main_ver-nonbuffered-upstream-truncation.patch || exit 1
+patch -p1 < $root/patches/nginx-$main_ver-upstream-truncation.patch || exit 1
 echo
 
 echo "$info_txt applying the channel-uninit-params patch for nginx"