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作者：张晓明 杨建华 钱名海 来源：PCVC 2007年11月16日
关键字：
| SOCKET socket(int family,int type,int protocol) |
| SOCKRET s; s=socket(AF_INET,SOCK_DGRAM,0); 或s=socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP) |
| int bind(SOCKET s,struct sockaddr_in*name,int namelen) |
| //设置有关的全局变量 SOCKET sr,ss; HPSTR sockBufferS,sockBufferR; HANDLE hSendData,hReceiveData; DWROD dwDataSize=1024*4; struct sockaddr_in therel.there2; #DEFINE LOCAL_HOST_ADDR 200.200.200.201 #DEFINE REMOTE_HOST-ADDR 200.200.200.202 #DEFINE LOCAL_HOST_PORT 2000 #DEFINE LOCAL_HOST_PORT 2001 //套接字建立函数 BOOL make_skt(HWND hwnd) { struct sockaddr_in here,here1; ss=socket(AF_INET,SOCK_DGRAM,0); sr=socket(AF_INET,SOCK_DGRAM,0); if((ss==INVALID_SOCKET)||(sr==INVALID_SOCKET)) { MessageBox(hwnd,“套接字建立失败!”，“”,MB_OK); return(FALSE); } here.sin_family=AF_INET; here.sin_addr.s_addr=inet_addr(LOCAL_HOST_ADDR); here.sin_port=htons(LICAL_HOST_PORT); //another socket herel.sin_family=AF_INET; herel.sin_addr.s_addr(LOCAL_HOST_ADDR); herel.sin_port=htons(LOCAL_HOST_PORT1); SocketBuffer();//套接字缓冲区的锁定设置 setsockopt(ss,SOL_SOCKET,SO_SNDBUF,(char FAR*)sockBufferS,dwDataSize); if(bind(ss,(LPSOCKADDR)&here,sizeof(here))) { MessageBox(hwnd,“发送套接字绑定失败!”，“”，MB_OK); return(FALSE); } setsockopt(sr SQL_SOCKET,SO_RCVBUF|SO_REUSEADDR,(char FAR*) sockBufferR,dwDataSize); if(bind(sr,(LPSOCKADDR)&here1,sizeof(here1))) { MessageBox(hwnd,“接收套接字绑定失败!”，“”，MB_OK); return(FALSE); } return(TRUE); } //套接字缓冲区设置 void sockBuffer(void) { hSendData=GlobalAlloc(GMEM_MOVEABLE|GMEM_SHARE,dwDataSize); if(!hSendData) { MessageBox(hwnd,“发送套接字缓冲区定位失败!”，NULL, MB_OK|MB_ICONEXCLAMATION); return; } if((sockBufferS=GlobalLock(hSendData)==NULL) { MessageBox(hwnd,“发送套接字缓冲区锁定失败!”，NULL, MB_OK|MB_ICONEXCLAMATION); GlobalFree(hRecordData[0]; return; } hReceiveData=globalAlloc(GMEM_MOVEABLE|GMEM_SHARE,dwDataSize); if(!hReceiveData) { MessageBox(hwnd,"“接收套接字缓冲区定位败!”，NULL MB_OK|MB_ICONEXCLAMATION); return; } if((sockBufferT=Globallock(hReceiveData))=NULL) MessageBox(hwnd,"发送套接字缓冲区锁定失败!”，NULL, MB_OK|MB_ICONEXCLAMATION); GlobalFree(hRecordData[0]); return; } { |
| int sendto(SOCKET s.char*buf,int len,int flags,struct sockaddr_in to,int tolen); int recvfrom(SOCKET s.char*buf,int len,int flags,struct sockaddr_in fron,int*fromlen) |
| void CloseSocket(void) { GlobalUnlock(hSendData); GlobalFree(hSenddata); GlobalUnlock(hReceiveData); GlobalFree(hReceiveDava); if(WSAAysncSelect(ss,hwnd,0,0)=SOCKET_ERROR) { MessageBos(hwnd,“发送套接字关闭失败!”，“”，MB_OK); return; } if(WSAAysncSelect(sr,hwnd,0,0)==SOCKET_ERROR) { MessageBox(hwnd,“接收套接字关闭失败!”，“”，MB_OK); return; } WSACleanup(); closesockent(ss); closesockent(sr); return; } |
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