From e820239bba7cde1858300fa55edbceff19c28342 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Tue, 17 Aug 2021 19:05:53 +0900
Subject: [PATCH] nghttpx: Implement http_reset_stream and
 http_send_stop_sending

---
 src/shrpx_http3_upstream.cc | 38 +++++++++++++++++++++++++++++++++++--
 src/shrpx_http3_upstream.h  |  2 ++
 2 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/src/shrpx_http3_upstream.cc b/src/shrpx_http3_upstream.cc
index 7f43ff95..5c05fe0d 100644
--- a/src/shrpx_http3_upstream.cc
+++ b/src/shrpx_http3_upstream.cc
@@ -1904,18 +1904,52 @@ namespace {
 int http_send_stop_sending(nghttp3_conn *conn, int64_t stream_id,
                            uint64_t app_error_code, void *user_data,
                            void *stream_user_data) {
+  auto upstream = static_cast<Http3Upstream *>(user_data);
+
+  if (upstream->http_send_stop_sending(stream_id, app_error_code) != 0) {
+    return NGHTTP3_ERR_CALLBACK_FAILURE;
+  }
+
   return 0;
 }
 } // namespace
 
+int Http3Upstream::http_send_stop_sending(int64_t stream_id,
+                                          uint64_t app_error_code) {
+  auto rv = ngtcp2_conn_shutdown_stream_read(conn_, stream_id, app_error_code);
+  if (ngtcp2_err_is_fatal(rv)) {
+    LOG(ERROR) << "ngtcp2_conn_shutdown_stream_read: " << ngtcp2_strerror(rv);
+    return -1;
+  }
+
+  return 0;
+}
+
 namespace {
 int http_reset_stream(nghttp3_conn *conn, int64_t stream_id,
                       uint64_t app_error_code, void *user_data,
                       void *stream_user_data) {
+  auto upstream = static_cast<Http3Upstream *>(user_data);
+
+  if (upstream->http_reset_stream(stream_id, app_error_code) != 0) {
+    return NGHTTP3_ERR_CALLBACK_FAILURE;
+  }
+
   return 0;
 }
 } // namespace
 
+int Http3Upstream::http_reset_stream(int64_t stream_id,
+                                     uint64_t app_error_code) {
+  auto rv = ngtcp2_conn_shutdown_stream_write(conn_, stream_id, app_error_code);
+  if (ngtcp2_err_is_fatal(rv)) {
+    LOG(ERROR) << "ngtcp2_conn_shutdown_stream_write: " << ngtcp2_strerror(rv);
+    return -1;
+  }
+
+  return 0;
+}
+
 int Http3Upstream::setup_httpconn() {
   int rv;
 
@@ -1934,9 +1968,9 @@ int Http3Upstream::setup_httpconn() {
       nullptr, // begin_trailers
       nullptr, // recv_trailer
       nullptr, // end_trailers
-      http_send_stop_sending,
+      shrpx::http_send_stop_sending,
       shrpx::http_end_stream,
-      http_reset_stream,
+      shrpx::http_reset_stream,
   };
 
   nghttp3_settings settings;
diff --git a/src/shrpx_http3_upstream.h b/src/shrpx_http3_upstream.h
index fd052ec6..24e1064d 100644
--- a/src/shrpx_http3_upstream.h
+++ b/src/shrpx_http3_upstream.h
@@ -138,6 +138,8 @@ public:
                             const std::vector<nghttp3_nv> &nva) const;
   int http_acked_stream_data(Downstream *downstream, size_t datalen);
   int http_shutdown_stream_read(int64_t stream_id);
+  int http_reset_stream(int64_t stream_id, uint64_t app_error_code);
+  int http_send_stop_sending(int64_t stream_id, uint64_t app_error_code);
 
 private:
   ClientHandler *handler_;