77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
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// UDP.cpp: implementation of the CUDP class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "StdAfx.h"
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#include "UDP.h"
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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CUDP::CUDP()
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{
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}
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CUDP::~CUDP()
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{
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}
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void CUDP::init()
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{
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WSAData wsd;
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if (WSAStartup(MAKEWORD(2,2),&wsd)!=0)
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{
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WSACleanup();
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exit(1);
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}
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if ((m_SocketSend=socket(AF_INET,SOCK_DGRAM,0))==-1)
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{
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perror("NetSocks Failed");
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exit(0);
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}
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int optval=8;
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if (setsockopt(m_SocketSend,IPPROTO_IP,SO_REUSEADDR,(char*)&optval,sizeof(int))==-1)
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{
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perror("setsockopt(IP_TTL)");
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}
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if ((m_SocketRecv=socket(AF_INET,SOCK_DGRAM,0))==-1)
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{
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perror("NetSocks Failed");
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exit(0);
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}
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if (setsockopt(m_SocketRecv,IPPROTO_IP,SO_REUSEADDR,(char*)&optval,sizeof(int))==-1)
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{
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perror("setsockopt(IP_TTL)");
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}
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}
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void CUDP::UDPSend(char buf[],int len,unsigned short PortNo,const char* IP)
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{
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SOCKADDR_IN remote;
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memset((char*)&remote,0,sizeof(SOCKADDR_IN));
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remote.sin_family=AF_INET;
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remote.sin_port=htons(PortNo);
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remote.sin_addr.s_addr=inet_addr(IP);
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sendto(m_SocketSend,buf,len,0,(SOCKADDR*)&remote,sizeof(SOCKADDR_IN));
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}
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void CUDP::UDPRecv(char buf[],int len,unsigned short PortNo,const char* IP)
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{
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SOCKADDR_IN localRaddr,remoteSaddr;
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localRaddr.sin_family=AF_INET;
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localRaddr.sin_addr.S_un.S_addr=htons(INADDR_ANY);
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localRaddr.sin_port=htons(PortNo);
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remoteSaddr.sin_family=AF_INET;
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remoteSaddr.sin_addr.S_un.S_addr=inet_addr(IP);
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remoteSaddr.sin_port=htons(PortNo);
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int socklen=sizeof(SOCKADDR_IN);
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bind(m_SocketRecv,(SOCKADDR FAR*)&localRaddr,sizeof(SOCKADDR_IN));
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recvfrom(m_SocketRecv,buf,len,0,(SOCKADDR*)&remoteSaddr,&socklen);
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}
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void CUDP::UDPClose()
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{
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closesocket(m_SocketRecv);
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closesocket(m_SocketSend);
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WSACleanup();
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}
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