?? mysocket.cpp
字號:
#include "stdafx.h"
#include "MySocket.h"
CMySocket::CMySocket()
{
m_hSocket = INVALID_SOCKET;
}
CMySocket::~CMySocket()
{
Close();
}
BOOL CMySocket::Close()
{
if(m_hSocket == INVALID_SOCKET)
return FALSE;
::closesocket(m_hSocket);
m_hSocket = INVALID_SOCKET;
return TRUE;
}
BOOL CMySocket::Create(int nPort, char* ip)
{
if(m_hSocket != INVALID_SOCKET)
return FALSE;
m_hSocket = ::socket(PF_INET, SOCK_DGRAM, 0);
if (m_hSocket == INVALID_SOCKET)
return FALSE;
// Bind to the port
SOCKADDR_IN SockAddr;
memset(&SockAddr,0, sizeof(SockAddr));
SockAddr.sin_family = AF_INET;
SockAddr.sin_addr.s_addr = inet_addr(ip);
SockAddr.sin_port = ::htons(nPort);
// Bind to the address and port
int r = ::bind(m_hSocket, (SOCKADDR*)&SockAddr, sizeof(SockAddr));
if (r == 0)
{
// ::setsockopt(SOL_SOCKET, SO_DONTLINGER, 1);
// ::setsockopt(SOL_SOCKET, SO_KEEPALIVE, 1);
}
else
{
return FALSE;
}
return TRUE;
}
int CMySocket::SendTo(char* lBuf, int bufSize, int nPort, char* addr)
{
if(m_hSocket == INVALID_SOCKET)
return 0;
SOCKADDR_IN SockAddr;
memset(&SockAddr,0, sizeof(SockAddr));
SockAddr.sin_family = AF_INET;
SockAddr.sin_addr.s_addr = inet_addr(addr);
SockAddr.sin_port = ::htons(nPort);
return ::sendto(m_hSocket, lBuf, bufSize, 0, (sockaddr*)&SockAddr, sizeof(SockAddr));
}
int CMySocket::ReceiveFrom(char* lBuf, int bufSize, char* addr)
{
if(m_hSocket == INVALID_SOCKET)
return 0;
SOCKADDR_IN addr1;
memset(&addr1, 0, sizeof(addr1));
int addrlen = sizeof(addr1);
int ret = ::recvfrom(m_hSocket, lBuf, bufSize, 0, (sockaddr*)&addr1, &addrlen);
strcpy(addr, inet_ntoa(addr1.sin_addr));
return ret;
}
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