Upstream: added check if a response is complete.
Checks were added to both buffered and unbuffered code paths to detect
and complain if a response is incomplete. Appropriate error codes are
now passed to ngx_http_upstream_finalize_request().
With this change in unbuffered mode we now use u->length set to -1 as an
indicator that EOF is allowed per protocol and used to indicate response
end (much like its with p->length in buffered mode). Proxy module was
changed to set u->length to 1 (instead of previously used -1) in case of
chunked transfer encoding used to comply with the above.
diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index 2cf0133..a22ed0f 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -1542,7 +1542,7 @@
u->pipe->length = 3; /* "0" LF LF */
u->input_filter = ngx_http_proxy_non_buffered_chunked_filter;
- u->length = -1;
+ u->length = 1;
} else if (u->headers_in.content_length_n == 0) {
/* empty body: special case as filter won't be called */
