基于UDP客户端与服务器代码

//#include"../common/InitSock.h" #include "../common/InitSock.h" #include<stdio.h> CInitSock initSock; int main() { SOCKET s=::socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP); if (s==INVALID_SOCKET) { printf("Failed socket()\n"); return 0; } sockaddr_in sin; sin.sin_family=AF_INET; sin.sin_port=htons(4567); sin.sin_addr.S_un.S_addr=INADDR_ANY; if(::bind(s,(LPSOCKADDR)&sin,sizeof(sin))==SOCKET_ERROR) { printf("Failed bind()\n"); return 0; } char buff[1024]; sockaddr_in addr; int nLen=sizeof(addr); while(TRUE) { int nRev=::recvfrom(s,buff,1024,0,(sockaddr*)&addr,&nLen); if(nRev>0) { buff[nRev]='\0'; printf("接收到数据（%s）:%s",::inet_ntoa(addr.sin_addr),buff); } } ::closesocket(s); }