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// Copyright 2019 Google LLC
//
// 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
//
// https://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 "socket.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <chrono>
#include <thread>
#include <vector>
// Basic socket send & receive test
TEST(Socket, SendRecv) {
const char* port = "19021";
auto server = dap::Socket("localhost", port);
auto client = dap::Socket::connect("localhost", port, 0);
ASSERT_TRUE(client != nullptr);
const std::string expect = "Hello World!";
std::string read;
auto thread = std::thread([&] {
auto conn = server.accept();
ASSERT_TRUE(conn != nullptr);
char c;
while (conn->read(&c, 1) != 0) {
read += c;
}
});
ASSERT_TRUE(client->write(expect.data(), expect.size()));
client->close();
thread.join();
ASSERT_EQ(read, expect);
}
// See https://github.com/google/cppdap/issues/37
TEST(Socket, CloseOnDifferentThread) {
const char* port = "19021";
auto server = dap::Socket("localhost", port);
auto client = dap::Socket::connect("localhost", port, 0);
ASSERT_TRUE(client != nullptr);
auto conn = server.accept();
auto thread = std::thread([&] {
// Closing client on different thread should unblock client->read().
client->close();
});
char c;
while (client->read(&c, 1) != 0) {
}
thread.join();
}
TEST(Socket, ConnectTimeout) {
const char* port = "19021";
const int timeoutMillis = 200;
const int maxAttempts = 1024;
using namespace std::chrono;
auto server = dap::Socket("localhost", port);
std::vector<std::shared_ptr<dap::ReaderWriter>> connections;
for (int i = 0; i < maxAttempts; i++) {
auto start = system_clock::now();
auto connection = dap::Socket::connect("localhost", port, timeoutMillis);
auto end = system_clock::now();
if (!connection) {
auto timeTakenMillis = duration_cast<milliseconds>(end - start).count();
ASSERT_GE(timeTakenMillis + 20, // +20ms for a bit of timing wiggle room
timeoutMillis);
return;
}
// Keep hold of the connections to saturate any incoming socket buffers.
connections.emplace_back(std::move(connection));
}
FAIL() << "Failed to test timeout after " << maxAttempts << " attempts";
}
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