我刚刚通过“Beej网络编程指南”这本书开始学习winsock。我正在Windows下编程,并通过gcc运行它。这只是编写第一个服务器程序的开始,但是在尝试编译时会出现这些错误。
/* Server */
#include <iostream>
#include <windows.h>
#include <winsock2.h>
using namespace std;
const int winsockVersion = 2;
#define BACKLOG 10
#define PORT 3000
int main(void){
WSADATA wsadata;
if (WSAStartup(MAKEWORD(winsockVersion,0),&wsadata) == 0){
struct addrinfo hints, *res;
memset(&hints,0,sizeof hints);
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
if ( getaddrinfo(NULL,PORT,&hints,&res) == 0 ){
cout<<"-Call to get addrinfo successful!." << endl;
}
cout<<"res af_family" << res->ai_family << endl;
}
//clear stuff
if( WSACleanup() != 0){
cout<<"-WSACleanup unsuccessful" << endl;
}else{
cout<<"-WSACleanup successful" << endl;
}
return 0;
}
这些是我收到的错误
g++ -o server.exe server.cpp -lws2_32
Process started >>>
server.cpp: In function `int main()':
server.cpp:20: error: aggregate `addrinfo hints' has incomplete type and cannot be defined
server.cpp:25: error: `AI_PASSIVE' was not declared in this scope
server.cpp:27: error: `getaddrinfo' was not declared in this scope
server.cpp:31: error: invalid use of undefined type `struct addrinfo'
server.cpp:20: error: forward declaration of `struct addrinfo'
server.cpp:54:2: warning: no newline at end of file
<<< Process finished.
不应该在windows.h或winsock.h中定义结构和功能吗?
解决方案
编辑
对于偶然发现此问题的任何人,请添加
#define _WIN32_WINNT 0x501
#include <ws2tcpip.h>
如果getaddrinfo声明未声明,则在源顶部。
最佳答案
您可能想要#include <ws2tcpip.h>
。请记住,在Stack Overflow之前,Google是您遇到这类问题的 friend :您将立即从MSDN中获得答案!
关于c++ - Winsock编译错误,无法找到addrinfo结构和一些相关函数,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/4243027/