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/*
* Copyright 2016 The Android Open Source Project
*
* 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 "model/setup/async_manager.h"
#include <gtest/gtest.h>
#include <cstdint>
#include <cstring>
#include <vector>
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
namespace test_vendor_lib {
class AsyncManagerSocketTest : public ::testing::Test {
public:
static const uint16_t kPort = 6111;
static const size_t kBufferSize = 16;
bool CheckBufferEquals() {
return strcmp(server_buffer_, client_buffer_) == 0;
}
protected:
int StartServer() {
struct sockaddr_in serv_addr;
int fd = socket(AF_INET, SOCK_STREAM, 0);
EXPECT_FALSE(fd < 0);
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
serv_addr.sin_port = htons(kPort);
int reuse_flag = 1;
EXPECT_FALSE(setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse_flag, sizeof(reuse_flag)) < 0);
EXPECT_FALSE(bind(fd, (sockaddr*)&serv_addr, sizeof(serv_addr)) < 0);
listen(fd, 1);
return fd;
}
int AcceptConnection(int fd) {
struct sockaddr_in cli_addr;
memset(&cli_addr, 0, sizeof(cli_addr));
socklen_t clilen = sizeof(cli_addr);
int connection_fd = accept(fd, (struct sockaddr*)&cli_addr, &clilen);
EXPECT_FALSE(connection_fd < 0);
return connection_fd;
}
void ReadIncomingMessage(int fd) {
int n = TEMP_FAILURE_RETRY(read(fd, server_buffer_, kBufferSize - 1));
EXPECT_FALSE(n < 0);
if (n == 0) { // got EOF
async_manager_.StopWatchingFileDescriptor(fd);
close(fd);
} else {
n = write(fd, "1", 1);
}
}
void SetUp() override {
memset(server_buffer_, 0, kBufferSize);
socket_fd_ = StartServer();
async_manager_.WatchFdForNonBlockingReads(socket_fd_, [this](int fd) {
int connection_fd = AcceptConnection(fd);
async_manager_.WatchFdForNonBlockingReads(connection_fd, [this](int fd) { ReadIncomingMessage(fd); });
});
}
void TearDown() override {
async_manager_.StopWatchingFileDescriptor(socket_fd_);
close(socket_fd_);
EXPECT_TRUE(CheckBufferEquals());
}
int ConnectClient() {
int socket_cli_fd = socket(AF_INET, SOCK_STREAM, 0);
EXPECT_FALSE(socket_cli_fd < 0);
struct hostent* server;
server = gethostbyname("localhost");
EXPECT_FALSE(server == NULL);
struct sockaddr_in serv_addr;
memset((void*)&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = *(reinterpret_cast<in_addr_t*>(server->h_addr));
serv_addr.sin_port = htons(kPort);
int result = connect(socket_cli_fd, (struct sockaddr*)&serv_addr, sizeof(serv_addr));
EXPECT_FALSE(result < 0);
return socket_cli_fd;
}
void WriteFromClient(int socket_cli_fd) {
strcpy(client_buffer_, "1");
int n = write(socket_cli_fd, client_buffer_, strlen(client_buffer_));
EXPECT_TRUE(n > 0);
}
void AwaitServerResponse(int socket_cli_fd) {
int n = read(socket_cli_fd, client_buffer_, 1);
EXPECT_TRUE(n > 0);
}
private:
AsyncManager async_manager_;
int socket_fd_;
char server_buffer_[kBufferSize];
char client_buffer_[kBufferSize];
};
TEST_F(AsyncManagerSocketTest, TestOneConnection) {
int socket_cli_fd = ConnectClient();
WriteFromClient(socket_cli_fd);
AwaitServerResponse(socket_cli_fd);
close(socket_cli_fd);
}
TEST_F(AsyncManagerSocketTest, TestRepeatedConnections) {
static const int num_connections = 300;
for (int i = 0; i < num_connections; i++) {
int socket_cli_fd = ConnectClient();
WriteFromClient(socket_cli_fd);
AwaitServerResponse(socket_cli_fd);
close(socket_cli_fd);
}
}
TEST_F(AsyncManagerSocketTest, TestMultipleConnections) {
static const int num_connections = 300;
int socket_cli_fd[num_connections];
for (int i = 0; i < num_connections; i++) {
socket_cli_fd[i] = ConnectClient();
EXPECT_TRUE(socket_cli_fd[i] > 0);
WriteFromClient(socket_cli_fd[i]);
}
for (int i = 0; i < num_connections; i++) {
AwaitServerResponse(socket_cli_fd[i]);
close(socket_cli_fd[i]);
}
}
} // namespace test_vendor_lib
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