参考文章
https://mmoaay.gitbooks.io/boost-asio-cpp-network-programming-chinese/content/Chapter1.html
1. 头文件目录
L:\boost_1_53_0
2.头文件
#include <boost/asio.hpp>
#include <boost/thread.hpp>
3.常用类
(1).io_service
Boost.Asio使用io_service同操作系统的输入、输出服务进行交互。通常一个io_service实例就足够
boost::asio::io_service ioService;
(2) endpoint
endpoint绑定了要连接的服务器端的ip地址及其端口,connet时需要用到endpoint。
boost::asio::ip::tcp::endpoint ep(boost::asio::ip::address::from_string("127.0.0.1"), 2001);
// 或者
auto endpoint = boost::asio::ip::tcp::endpoint(boost::asio::ip::address::from_string("127.0.0.1"), 2001);
(3)socket
boost::asio::ip::tcp::socket socket(ioService)
// 使用智能指针的方式:
std::shared_ptr<boost::asio::ip::tcp::socket> socketPtr(new boost::asio::ip::tcp::socket(ioService));
// 或者
std::shared_ptr<boost::asio::ip::tcp::socket> socketPtr;
socketPtr.reset(new boost::asio::ip::tcp::socket(ioService))
4. 操作
(1)connect与async_connect
客户端连接服务器时的同步连接与异步连接,用法如下:
socket.connect(endpoint);
socket.async_connect(endpoint);
//使用智能指针的方式:
socketptr.get()->connect(endpoint);
socketptr.async_connect(endpoint);
connect可以传入错误码,如下:
boost::system::error_code err;
socket.connect(endpoint, err);
async_connect可以绑定handler,用来接收连接成功消息,如下:
socket.async_connect(endpoint, connect_handler);
void connect_handler(const boost::system::error_code &ec)
{
}
5. 例子
客户端
#include <iostream>
#include <algorithm>
#include <memory>
#include <boost/asio.hpp>
#include <boost/thread.hpp>
using boost::asio::ip::tcp;
boost::asio::io_service ioService;
std::shared_ptr<boost::asio::ip::tcp::socket> socketPtr;
void connect_handler(const boost::system::error_code &ec)
{
if (!ec)
{
printf("connect");
socketPtr->write_some(boost::asio::buffer("hello", 6));// 阻塞
char data[512] = "";
size_t len = socketPtr->read_some(boost::asio::buffer(data));// 阻塞
printf(data);
}
}
void Connect(std::string ip, int port)
{
boost::asio::ip::tcp::endpoint endpoint(boost::asio::ip::address::from_string(ip), port);
socketPtr->async_connect(endpoint, connect_handler); // 异步
}
int main(int argc, char * argv[])
{
socketPtr.reset(new boost::asio::ip::tcp::socket(ioService));
Connect("127.0.0.1", 2001);
ioService.run();
return 0;
}
服务端:
#include <iostream>
#include <algorithm>
#include <memory>
#include <boost/asio.hpp>
#include <boost/thread.hpp>
using boost::asio::ip::tcp;
typedef std::shared_ptr<boost::asio::ip::tcp::socket> SOCKET_PTR;
void client_session(SOCKET_PTR socket_ptr)
{
while (true)
{
char data[512] = "";
size_t len = socket_ptr->read_some(boost::asio::buffer(data));// 阻塞
printf(data);
socket_ptr->write_some(boost::asio::buffer("ok", 2));
}
}
int main(int argc, char * argv[])
{
boost::asio::io_service ioService;
boost::asio::ip::tcp::endpoint endpoint(boost::asio::ip::address::from_string("127.0.0.1"), 2001);
boost::asio::ip::tcp::acceptor acceptor(ioService, endpoint);
while (true)
{
SOCKET_PTR socket_ptr(new boost::asio::ip::tcp::socket(ioService));
acceptor.accept(*socket_ptr); // 阻塞
boost::thread(boost::bind(client_session, socket_ptr));
}
return 0;
}