TEST_F(RouterTest, RetryUpstreamReset) {
  NiceMock<Http::MockRequestEncoder> encoder1;
  Http::ResponseDecoder* response_decoder = nullptr;
  EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _))
      .WillOnce(Invoke(
          [&](Http::ResponseDecoder& decoder,
              Http::ConnectionPool::Callbacks& callbacks) -> Http::ConnectionPool::Cancellable* {
            response_decoder = &decoder;
            callbacks.onPoolReady(encoder1, cm_.thread_local_cluster_.conn_pool_.host_,
                                  upstream_stream_info_, Http::Protocol::Http10);
            return nullptr;
          }));
  expectResponseTimerCreate();

  Http::TestRequestHeaderMapImpl headers{{"x-envoy-retry-on", "5xx"}, {"x-envoy-internal", "true"}};
  HttpTestUtility::addDefaultHeaders(headers);
  router_.decodeHeaders(headers, false);
  EXPECT_CALL(*router_.retry_state_, enabled()).WillOnce(Return(true));
  EXPECT_CALL(callbacks_, addDecodedData(_, _));
  Buffer::OwnedImpl body("test body");
  router_.decodeData(body, true);
  EXPECT_EQ(1U,
            callbacks_.route_->route_entry_.virtual_cluster_.stats().upstream_rq_total_.value());

  router_.retry_state_->expectResetRetry();
  EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_.host_->outlier_detector_,
              putResult(Upstream::Outlier::Result::LocalOriginConnectFailed, _));
  encoder1.stream_.resetStream(Http::StreamResetReason::RemoteReset);

  // We expect this reset to kick off a new request.
  NiceMock<Http::MockRequestEncoder> encoder2;
  EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _))
      .WillOnce(Invoke(
          [&](Http::ResponseDecoder& decoder,
              Http::ConnectionPool::Callbacks& callbacks) -> Http::ConnectionPool::Cancellable* {
            response_decoder = &decoder;
            EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_.host_->outlier_detector_,
                        putResult(Upstream::Outlier::Result::LocalOriginConnectSuccess,
                                  absl::optional<uint64_t>(absl::nullopt)));
            callbacks.onPoolReady(encoder2, cm_.thread_local_cluster_.conn_pool_.host_,
                                  upstream_stream_info_, Http::Protocol::Http10);
            return nullptr;
          }));
  router_.retry_state_->callback_();
  EXPECT_EQ(2U,
            callbacks_.route_->route_entry_.virtual_cluster_.stats().upstream_rq_total_.value());
  EXPECT_TRUE(verifyHostUpstreamStats(0, 1));

  // Normal response.
  EXPECT_CALL(*router_.retry_state_, shouldRetryHeaders(_, _)).WillOnce(Return(RetryStatus::No));
  Http::ResponseHeaderMapPtr response_headers(
      new Http::TestResponseHeaderMapImpl{{":status", "200"}});
  EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_.host_->outlier_detector_,
              putHttpResponseCode(200));
  response_decoder->decodeHeaders(std::move(response_headers), true);
  EXPECT_TRUE(verifyHostUpstreamStats(1, 1));
}
TEST_F(RouterTest, RetryUpstreamReset) {
  NiceMock<Http::MockRequestEncoder> encoder1;
  Http::ResponseDecoder* response_decoder = nullptr;
  EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _))
      .WillOnce(Invoke(
          [&](Http::ResponseDecoder& decoder,
              Http::ConnectionPool::Callbacks& callbacks) -> Http::ConnectionPool::Cancellable* {
            response_decoder = &decoder;
            callbacks.onPoolReady(encoder1, cm_.thread_local_cluster_.conn_pool_.host_,
                                  upstream_stream_info_, Http::Protocol::Http10);
            return nullptr;
          }));
  expectResponseTimerCreate();

  Http::TestRequestHeaderMapImpl headers{{"x-envoy-retry-on", "5xx"}, {"x-envoy-internal", "true"}};
  HttpTestUtility::addDefaultHeaders(headers);
  router_.decodeHeaders(headers, false);
  EXPECT_CALL(*router_.retry_state_, enabled()).WillOnce(Return(true));
  EXPECT_CALL(callbacks_, addDecodedData(_, _));
  Buffer::OwnedImpl body("test body");
  router_.decodeData(body, true);
  EXPECT_EQ(1U,
            callbacks_.route_->route_entry_.virtual_cluster_.stats().upstream_rq_total_.value());

  router_.retry_state_->expectResetRetry();
  EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_.host_->outlier_detector_,
              putResult(Upstream::Outlier::Result::LocalOriginConnectFailed, _));
  encoder1.stream_.resetStream(Http::StreamResetReason::RemoteReset);

   
  NiceMock<Http::MockRequestEncoder> encoder2;
  EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_, newStream(_, _))
      .WillOnce(Invoke(
          [&](Http::ResponseDecoder& decoder,
              Http::ConnectionPool::Callbacks& callbacks) -> Http::ConnectionPool::Cancellable* {
            response_decoder = &decoder;
            EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_.host_->outlier_detector_,
                        putResult(Upstream::Outlier::Result::LocalOriginConnectSuccess,
                                  absl::optional<uint64_t>(absl::nullopt)));
            callbacks.onPoolReady(encoder2, cm_.thread_local_cluster_.conn_pool_.host_,
                                  upstream_stream_info_, Http::Protocol::Http10);
            return nullptr;
          }));
  router_.retry_state_->callback_();
  EXPECT_EQ(2U,
            callbacks_.route_->route_entry_.virtual_cluster_.stats().upstream_rq_total_.value());
  EXPECT_TRUE(verifyHostUpstreamStats(0, 1));

   
  EXPECT_CALL(*router_.retry_state_, shouldRetryHeaders(_, _)).WillOnce(Return(RetryStatus::No));
  Http::ResponseHeaderMapPtr response_headers(
      new Http::TestResponseHeaderMapImpl{{":status", "200"}});
  EXPECT_CALL(cm_.thread_local_cluster_.conn_pool_.host_->outlier_detector_,
              putHttpResponseCode(200));
  response_decoder->decodeHeaders(std::move(response_headers), true);
  EXPECT_TRUE(verifyHostUpstreamStats(1, 1));
}