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//
//
// Copyright 2020 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//
#include <memory>
#include "gtest/gtest.h"
#include <grpc/status.h>
#include <grpc/support/log.h>
#include "src/core/lib/gprpp/time.h"
#include "test/core/end2end/cq_verifier.h"
#include "test/core/end2end/end2end_tests.h"
namespace grpc_core {
namespace {
// Client requests status along with the initial metadata. Server streams
// messages and ends with a non-OK status. Client reads after server is done
// writing, and expects to get the status after the messages.
void ServerStreaming(CoreEnd2endTest& test, int num_messages) {
auto c = test.NewClientCall("/foo").Timeout(Duration::Minutes(1)).Create();
CoreEnd2endTest::IncomingMetadata server_initial_metadata;
CoreEnd2endTest::IncomingStatusOnClient server_status;
c.NewBatch(1)
.SendInitialMetadata({})
.RecvInitialMetadata(server_initial_metadata)
// Client requests status early but should not receive status till all the
// messages are received.
.RecvStatusOnClient(server_status);
// Client sends close early
c.NewBatch(3).SendCloseFromClient();
test.Expect(3, true);
test.Step();
auto s = test.RequestCall(100);
test.Expect(100, true);
test.Step();
s.NewBatch(101).SendInitialMetadata({});
test.Expect(101, true);
test.Step();
// Server writes bunch of messages
for (int i = 0; i < num_messages; i++) {
s.NewBatch(103).SendMessage("hello world");
test.Expect(103, true);
test.Step();
}
// Server sends status
CoreEnd2endTest::IncomingCloseOnServer client_close;
s.NewBatch(104)
.SendStatusFromServer(GRPC_STATUS_UNIMPLEMENTED, "xyz", {})
.RecvCloseOnServer(client_close);
bool seen_status = false;
test.Expect(1, CoreEnd2endTest::Maybe{&seen_status});
test.Expect(104, true);
test.Step();
gpr_log(GPR_DEBUG, "SEEN_STATUS:%d", seen_status);
// Client keeps reading messages till it gets the status
int num_messages_received = 0;
while (true) {
CoreEnd2endTest::IncomingMessage server_message;
c.NewBatch(102).RecvMessage(server_message);
test.Expect(1, CqVerifier::Maybe{&seen_status});
test.Expect(102, true);
test.Step();
if (server_message.is_end_of_stream()) {
// The transport has received the trailing metadata.
break;
}
EXPECT_EQ(server_message.payload(), "hello world");
num_messages_received++;
}
GPR_ASSERT(num_messages_received == num_messages);
if (!seen_status) {
test.Expect(1, true);
test.Step();
}
EXPECT_EQ(server_status.status(), GRPC_STATUS_UNIMPLEMENTED);
EXPECT_EQ(server_status.message(), "xyz");
}
CORE_END2END_TEST(Http2Test, ServerStreaming) { ServerStreaming(*this, 1); }
CORE_END2END_TEST(Http2Test, ServerStreamingEmptyStream) {
ServerStreaming(*this, 0);
}
CORE_END2END_TEST(Http2Test, ServerStreaming10Messages) {
ServerStreaming(*this, 10);
}
} // namespace
} // namespace grpc_core
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