局域网内手机控制开关工作电脑显示器：
#include <winsock2.h>#include <stdio.h>#include <windows.h>#pragma comment(lib,"ws2_32.lib")int main(int argc, char* argv[]){short port=8000;WSADATA wsa;init://init socketif(WSAStartup(MAKEWORD(2,2),&wsa)!=0){printf("init failed\n");exit(-1);}//create socktSOCKET serverSocket;if((serverSocket=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==INVALID_SOCKET){printf("create failed\n");exit(-1);}struct sockaddr_in serverAddress;memset(&serverAddress,0,sizeof(sockaddr_in));serverAddress.sin_family=AF_INET;serverAddress.sin_addr.S_un.S_addr = htonl(INADDR_ANY);serverAddress.sin_port = htons(port);if(bind(serverSocket,(sockaddr*)&serverAddress,sizeof(serverAddress))==SOCKET_ERROR){printf("port: %d\n",port);exit(-1);}if(listen(serverSocket,SOMAXCONN)==SOCKET_ERROR){printf("listen failed\n");exit(-1);}printf("Server %d is listening……\n",port);SOCKET clientSocket;struct sockaddr_in clientAddress;//addressmemset(&clientAddress,0,sizeof(clientAddress));int addrlen = sizeof(clientAddress);//accept connectionif((clientSocket=accept(serverSocket,(sockaddr*)&clientAddress,&addrlen))==INVALID_SOCKET){printf("connect failed");exit(-1);}printf("Accept connection from %s\n",inet_ntoa(clientAddress.sin_addr));char buf[4096];while(1){//receive dataint bytes;if((bytes=recv(clientSocket,buf,sizeof(buf),0))==0){printf("receive faild\n");WSACleanup();goto init;}buf[bytes]='\0';printf("Message from %s %s\n",inet_ntoa(clientAddress.sin_addr),buf);if(buf[0]=='a'){SendMessage(HWND_BROADCAST,WM_SYSCOMMAND,SC_MONITORPOWER,2);//close monitor}if(buf[0]=='b'){SendMessage(HWND_BROADCAST,WM_SYSCOMMAND,SC_MONITORPOWER,-1);//open monitor}if(send(clientSocket,buf,bytes,0)==SOCKET_ERROR){printf("send faild\n");WSACleanup();goto init;}}WSACleanup();return 0;}
，失败是什么?没有什么.只是更走近成功一步,
