99 lines
2.0 KiB
C++
99 lines
2.0 KiB
C++
#include "StdAfx.h"
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#include "NetDatagram.h"
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CNetworkDatagram::CNetworkDatagram()
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{
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__Initialize();
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}
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CNetworkDatagram::~CNetworkDatagram()
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{
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Destroy();
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}
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void CNetworkDatagram::Destroy()
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{
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if (INVALID_SOCKET==m_sock)
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return;
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closesocket(m_sock);
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__Initialize();
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}
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bool CNetworkDatagram::Create(UINT uPort)
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{
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assert(INVALID_SOCKET==m_sock);
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m_sock = socket(AF_INET, SOCK_DGRAM, 0);
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DWORD arg = 1;
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ioctlsocket(m_sock, FIONBIO, &arg); // Non-blocking mode
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SOCKADDR_IN sockAddrIn;
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memset(&sockAddrIn, 0, sizeof(SOCKADDR_IN));
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sockAddrIn.sin_family = AF_INET;
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sockAddrIn.sin_addr.s_addr = INADDR_ANY;
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sockAddrIn.sin_port = htons(uPort);
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if (SOCKET_ERROR == bind(m_sock, (PSOCKADDR)&sockAddrIn, sizeof(SOCKADDR_IN)))
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{
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return false;
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}
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return true;
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}
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#pragma warning(push)
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#pragma warning(disable:4127)
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void CNetworkDatagram::Update()
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{
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if (m_sock == INVALID_SOCKET)
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return;
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FD_ZERO(&m_fdsRecv);
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FD_ZERO(&m_fdsSend);
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FD_SET(m_sock, &m_fdsRecv);
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FD_SET(m_sock, &m_fdsSend);
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TIMEVAL delay;
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delay.tv_sec = 0;
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delay.tv_usec = 0;
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if (select(0, &m_fdsRecv, &m_fdsSend, NULL, &delay) == SOCKET_ERROR)
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return;
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}
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#pragma warning(pop)
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bool CNetworkDatagram::CanRecv()
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{
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if (FD_ISSET(m_sock, &m_fdsRecv))
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return true;
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return false;
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}
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int CNetworkDatagram::PeekRecvFrom(UINT uBufLen, void* pvBuf, SOCKADDR_IN* pkSockAddrIn)
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{
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int nSockAddrInLen=sizeof(SOCKADDR_IN);
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return recvfrom(m_sock, (char*)pvBuf, uBufLen, MSG_PEEK, (PSOCKADDR)pkSockAddrIn, &nSockAddrInLen);
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}
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int CNetworkDatagram::RecvFrom(UINT uBufLen, void* pvBuf, SOCKADDR_IN* pkSockAddrIn)
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{
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int nSockAddrInLen=sizeof(SOCKADDR_IN);
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return recvfrom(m_sock, (char*)pvBuf, uBufLen, 0, (PSOCKADDR)pkSockAddrIn, &nSockAddrInLen);
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}
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int CNetworkDatagram::SendTo(UINT uBufLen, const void* c_pvBuf, const SOCKADDR_IN& c_rkSockAddrIn)
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{
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return sendto(m_sock, (const char *)c_pvBuf, uBufLen, 0, (PSOCKADDR)&c_rkSockAddrIn, sizeof(SOCKADDR_IN));
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}
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void CNetworkDatagram::__Initialize()
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{
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m_sock=INVALID_SOCKET;
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} |