C++、python和go语言实现的简单客户端服务器代码示例

#include <iostream>
#include <boost/asio.hpp>

using boost::asio::ip::tcp;
enum {max_length = 1024};

typedef boost::shared_ptr<tcp::socket> socket_ptr;

int main()
{
    boost::asio::io_service io_service;
    tcp::acceptor a(io_service, tcp::endpoint(tcp::v4(), atoi("12345")));
    for (;;)
    {
        socket_ptr sock(new tcp::socket(io_service));
        a.accept(*sock);
        char data[max_length];
        boost::system::error_code error;
        size_t length = sock->read_some(boost::asio::buffer(data), error);
        data[length] = 0;
        std::cout<<data<<std::endl;
        sock->close();
    }
    return 0;
}

using boost::asio::ip::tcp;
enum { max_length = 1024 };

int main(int argc, char* argv[])
{
    boost::asio::io_service io_service;
    tcp::resolver resolver(io_service);
    tcp::resolver::query query(tcp::v4(), "127.0.0.1","12345");
    tcp::resolver::iterator iterator = resolver.resolve(query);

    tcp::socket s(io_service);
    s.connect(*iterator);

    std::cout << "Please input: ";
    char request[max_length];
    std::cin.getline(request, max_length);
    size_t request_length = strlen(request);
    boost::asio::write(s, boost::asio::buffer(request, request_length));
    return 0;
}

import(
    "net"
    "fmt"
    "bufio"
)

func main() {
    client,err := net.Listen("tcp","127.0.0.1:12345")
    if err != nil {
        fmt.Printf("Error : %s\n",err.String())
    }
    for {
        if c, err := client.Accept(); err == nil {
            defer c.Close()
            line, _ := bufio.NewReader(c).ReadString('\n')
            fmt.Println(line)
        }
    }
}

import(
    "net"
    "fmt"
)

func main() {
    conn, err := net.Dial("tcp", "127.0.0.1:12345")
    if err != nil {
        fmt.Printf("Error : %s\n",err.String())
    }
    conn.Write([]byte("Just a test"))    
}