Question

我正在使用Dev ++，根据我读过的关于套接字编程的教程，我需要为我的项目链接到libws2_32.a。

我不明白该怎么做。有人可以解释一下吗？

这是我的代码：

//CONNECT TO REMOTE HOST (CLIENT APPLICATION)
//Include the needed header files.
//Don't forget to link libws2_32.a to your program as well
#include <winsock.h>
#pragma comment(lib,"libwsock32.a")
SOCKET s; //Socket handle

//CONNECTTOHOST – Connects to a remote host
bool ConnectToHost(int PortNo, char* IPAddress)
{
    //Start up Winsock…
    WSADATA wsadata;

    int error = WSAStartup(0x0202, &wsadata);

    //Did something happen?
    if (error)
        return false;

    //Did we get the right Winsock version?
    if (wsadata.wVersion != 0x0202)
    {
        WSACleanup(); //Clean up Winsock
        return false;
    }

    //Fill out the information needed to initialize a socket…
    SOCKADDR_IN target; //Socket address information

    target.sin_family = AF_INET; // address family Internet
    target.sin_port = htons (PortNo); //Port to connect on
    target.sin_addr.s_addr = inet_addr (IPAddress); //Target IP

    s = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP); //Create socket
    if (s == INVALID_SOCKET)
    {
        return false; //Couldn't create the socket
    }  

    //Try connecting...

    if (connect(s, (SOCKADDR *)&target, sizeof(target)) == SOCKET_ERROR)
    {
        return false; //Couldn't connect
    }
    else
        return true; //Success
}

//CLOSECONNECTION – shuts down the socket and closes any connection on it
void CloseConnection ()
{
    //Close the socket if it exists
    if (s)
        closesocket(s);

    WSACleanup(); //Clean up Winsock
}

我得到的错误是：

[Linker error] undefined reference to `WSAStartup@8'

Answer 1

转到项目选项 - ＆gt;参数 - ＆gt;链接器 - ＆gt;添加库并添加所需的库文件 - 在您的情况下 - libws2_32.a

如何在开发C ++中链接libws2_32.a以进行套接字编程

1 个答案: