nghttpx: Fix the issue that forwarded h3 GET request always has chunked TE

.github/workflows/build.yml

@@ -114,8 +114,9 @@ jobs:
     - name: Build nghttp3
       if: matrix.http3 == 'http3'
       run: |
-        git clone --depth 1 -b v0.1.1 https://github.com/ngtcp2/nghttp3
+        git clone https://github.com/ngtcp2/nghttp3
         cd nghttp3
+        git checkout 207318c92e0578ac393c31dcd797e4a4dca3e31a
         autoreconf -i
         ./configure --prefix=$PWD/build --enable-lib-only
         make -j$(nproc) check

README.rst

@@ -366,8 +366,9 @@ Build nghttp3:
 
 .. code-block:: text
 
-   $ git clone --depth 1 -b v0.1.1 https://github.com/ngtcp2/nghttp3
+   $ git clone https://github.com/ngtcp2/nghttp3
    $ cd nghttp3
+   $ git checkout 207318c92e0578ac393c31dcd797e4a4dca3e31a
    $ autoreconf -i
    $ ./configure --prefix=$PWD/build --enable-lib-only
    $ make -j$(nproc)

src/shrpx_http3_upstream.cc

@@ -1998,7 +1998,7 @@ int Http3Upstream::http_recv_request_header(Downstream *downstream,
 }
 
 namespace {
-int http_end_request_headers(nghttp3_conn *conn, int64_t stream_id,
+int http_end_request_headers(nghttp3_conn *conn, int64_t stream_id, int fin,
                              void *user_data, void *stream_user_data) {
   auto upstream = static_cast<Http3Upstream *>(user_data);
   auto handler = upstream->get_client_handler();
@@ -2008,7 +2008,7 @@ int http_end_request_headers(nghttp3_conn *conn, int64_t stream_id,
     return 0;
   }
 
-  if (upstream->http_end_request_headers(downstream) != 0) {
+  if (upstream->http_end_request_headers(downstream, fin) != 0) {
     return NGHTTP3_ERR_CALLBACK_FAILURE;
   }
 
@@ -2019,7 +2019,7 @@ int http_end_request_headers(nghttp3_conn *conn, int64_t stream_id,
 }
 } // namespace
 
-int Http3Upstream::http_end_request_headers(Downstream *downstream) {
+int Http3Upstream::http_end_request_headers(Downstream *downstream, int fin) {
   auto lgconf = log_config();
   lgconf->update_tstamp(std::chrono::system_clock::now());
   auto &req = downstream->request();
@@ -2115,8 +2115,11 @@ int Http3Upstream::http_end_request_headers(Downstream *downstream) {
     req.connect_proto = ConnectProto::WEBSOCKET;
   }
 
-  // We are not sure that request has body or not at the moment.
-  req.http2_expect_body = true;
+  if (!fin) {
+    req.http2_expect_body = true;
+  } else if (req.fs.content_length == -1) {
+    req.fs.content_length = 0;
+  }
 
   downstream->inspect_http2_request();
 

src/shrpx_http3_upstream.h

@@ -125,7 +125,7 @@ public:
   int http_recv_request_header(Downstream *downstream, int32_t token,
                                nghttp3_rcbuf *name, nghttp3_rcbuf *value,
                                uint8_t flags);
-  int http_end_request_headers(Downstream *downstream);
+  int http_end_request_headers(Downstream *downstream, int fin);
   int http_end_stream(Downstream *downstream);
   void start_downstream(Downstream *downstream);
   void initiate_downstream(Downstream *downstream);