1、简要
从前用的网络编程函数现在又做了一定的改动，报了这么3个错误。
error C4996: ‘inet_ntoa‘: Use inet_ntop() or InetNtop() instead or define _WINSOCK_DEPRECATED_NO_WARNINGS to disable deprecated API warningserror C4996: ‘gethostbyaddr‘: Use getnameinfo() or GetNameInfoW() instead or define _WINSOCK_DEPRECATED_NO_WARNINGS to disable deprecated API warningserror C4996: ‘inet_ntoa‘: Use inet_ntop() or InetNtop() instead or define _WINSOCK_DEPRECATED_NO_WARNINGS to disable deprecated API warnings
2、解决方法1
右键属性-属性页选择【C/C++】->【常规】->【SDL检查】 选择为否。
3、代码解决
既然已经明确提示需要换更安全的函数，那就按照要求来就好了。
serverAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");//自己的IP或者127.0.0.1
改为：
//新改进代码InetPton(AF_INET, _T("127.0.0.1"),
gethostbyaddr()改用getnameinfo()；
inet_ntop()改用getaddrinfo();
修改后的代码：
#include "stdafx.h"#include #pragma comment(lib,"ws2_32.lib")#include /*1. 初始化环境 wsastartup2. 创建套接字 socket3. 绑定套接字 bind4. 监听套接字 listen5. 处理套接字连接 accept6. 发送接收数据 send/recv7. 关闭套接字 closesocket8. 清理环境 wsacleanup*/int main(){ // 1. 初始化环境 wsastartup WSADATA wsd = { 0 }; int re = WSAStartup(MAKEWORD(2, 2), if (re != 0) { return 0; } if (LOBYTE(wsd.wVersion) != 2 || HIBYTE(wsd.wVersion) != 2) { return 0; } // 2. 创建套接字 socket SOCKET listenSock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (listenSock == INVALID_SOCKET) { return 0; } // 3. 绑定套接字 bind sockaddr_in serverAddr; serverAddr.sin_family = AF_INET; serverAddr.sin_port = htons(0x5566); //旧代码 //serverAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");//自己的IP或者127.0.0.1 //新改进代码 InetPton(AF_INET, _T("127.0.0.1"), re = bind(listenSock, (sockaddr *) // 4. 监听套接字 listen re = listen(listenSock, SOMAXCONN); // 5. 处理套接字连接 accept sockaddr_in clientAddr; int size = sizeof(clientAddr); SOCKET sToClientSock = accept( listenSock, (sockaddr *) //测试获取的结果 //更换为新函数查看使用结果 //旧 主机名 hostent * pHost = gethostbyaddr((char *) //旧 IP地址 char * p = inet_ntoa(*(struct in_addr *) (*pHost->h_addr_list)); //新代码测试 /////////////////////////////////////////////////////////////////// struct addrinfo *ptr = NULL; struct addrinfo hints; struct addrinfo *result = NULL; struct sockaddr_in *sockaddr_ipv4; char hostname[NI_MAXHOST]; //主机名称 char servInfo[NI_MAXSERV]; //具体连接成功的端口 getnameinfo((struct sockaddr *) ZeroMemory( hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; hints.ai_protocol = IPPROTO_TCP; getaddrinfo(hostname, servInfo, for (ptr = result; ptr != NULL; ptr = ptr->ai_next) { switch (ptr->ai_family) { case AF_UNSPEC: printf("Unspecified\n"); break; case AF_INET: printf("AF_INET (IPv4)\n"); sockaddr_ipv4 = (struct sockaddr_in *) ptr->ai_addr; printf("\tIPv4 address %s\n", inet_ntoa(sockaddr_ipv4->sin_addr)); break; } } /////////////////////////////////////////////////////////////////// // 6.1 发送数据 send char buf[100] = "hello socket client,from server!"; re = send(sToClientSock, buf, strlen(buf), 0); if (re == SOCKET_ERROR) { goto over; } // 6.2 接收数据 recv re = recv(sToClientSock, buf, sizeof(buf), 0); if (re == INVALID_SOCKET) { goto over; }over: // 7. 关闭套接字 closesocket closesocket(listenSock); closesocket(sToClientSock); // 8. 清理环境 wsacleanup WSACleanup(); return 0;}