//boost :boost_1_51// 1_44没有boost::asio::connect函数..与官网的向导不符...// (其实不是不符..代码与文档要匹配,看清稳定版还是最新版)// 可以用socket.connect...////CONTENT//Introduction to Sockets//内容引用URL :http://think-async.com/Asio/boost_asio_1_5_3/doc/html/boost_asio/tutorial.html//first class :daytime protocol TCP//synchronous TCP Daytime client//date: 2012-12-24#include "iostream"#include "boost/array.hpp"#include "boost/asio.hpp"using boost::asio::ip::tcp;void daytime_client(){ try{ //所有使用ASIO的程序最少有一个io_service对象 boost::asio::io_service io_service; //将服务器名字转换为TCP endpoint tcp::resolver resolver(io_service); std::string host ="192.168.3.144" ;//specify the host //resolver需要一个query对象,并将query转换为a list of endpoints //host name,也就是IP地址 //the name of service,也就是端口... tcp::resolver::query query(tcp::v4(),host,"13"); // tcp::resolver::query query(tcp::v4(),argv[1], "13"); //ip::tcp::resolver::iterator来保存list of endpoints tcp::resolver::iterator endpoint_iterator = resolver.resolve(query); //创建socket tcp::socket socket(io_service); //list of endpoints 可能包含IPV4 /IPV6 endpoint, //需要一个个测试找到可以用的,可以使程序兼容IP的版本 //这些工作由boost::asio::connect自动完成。 //连接socket //如果是boost1_44:error C2039: 'connect' : is not a member of 'boost::asio' boost::asio::connect(socket, endpoint_iterator); //read the response from the daytime service for(;;) { boost::array buf; boost::system::error_code error; //boost::asio::buffer确定缓冲大小并防止越界. size_t len = socket.read_some(boost::asio::buffer(buf),error); //当Server关闭连接的时候,read_some返回boost::asio::error::eof if(error == boost::asio::error::eof) break; else if(error) throw boost::system::system_error(error); std::cout.write(buf.data(),len); } } catch(std::exception &e) { std::cerr < < #include #include #include using boost::asio::ip::tcp;std::string make_daytime_string(){ using namespace std; //for time_t ,time ,ctime time_t now = time(0); return ctime(&now);}void daytime_server(){ try{ boost::asio::io_service io_service; //创建一个ip::tcp::acceptor用来监听连接. //初始化为监听TCP port 13, IPV4 tcp::acceptor acceptor(io_service,tcp::endpoint(tcp::v4(),13)); //情况2:创建一个连接,循环发送数据... tcp::socket socket(io_service); acceptor.accept(socket); for(;;) { //情况1:创建一个代表连接的socket,等待连接...只发送一次数据后析构.. //tcp::socket socket(io_service); //acceptor.accept(socket); //传送当前时间... std::string message = make_daytime_string(); boost::system::error_code ignored_error; boost::asio::write(socket,boost::asio::buffer(message),ignored_error); } } catch(std::exception &e) { std::cerr< <