// If an ip address is passed in, just return that. If a hostname is passed
// in, look up its ip and return that. Returns "" on failure.
std::string hostbyname(const char* hostname) {
SockAddr sockAddr(hostname, 0, IPv6Enabled() ? AF_UNSPEC : AF_INET);
if (!sockAddr.isValid() || sockAddr.getAddr() == "0.0.0.0")
return "";
else
return sockAddr.getAddr();
}
// If an ip address is passed in, just return that. If a hostname is passed
// in, look up its ip and return that. Returns "" on failure.
string hostbyname(const char *hostname) {
SockAddr sockAddr(hostname, 0);
if (!sockAddr.isValid() || sockAddr.getAddr() == "0.0.0.0")
return "";
else
return sockAddr.getAddr();
}
CAcceptor::CAcceptor(const char *host, int bind_port, \
int backlog, int timeout) : \
CSock(AF_INET, SOCK_STREAM)
{
CInetAddr sockAddr(host, bind_port);
int res;
if (setsockopt(m_fd, SOL_SOCKET, \
SO_REUSEADDR, &res, sizeof(int)) < 0)
{
KL_SYS_ERRORLOG("file: "__FILE__", line: %d, " \
"set SO_REUSEADDR failed, err: %s", \
__LINE__, strerror(errno));
throw errno;
}
if(bind(m_fd, sockAddr.getsockaddr(), \
sizeof(struct sockaddr)) == -1){
KL_SYS_ERRORLOG("file: "__FILE__", line: %d, " \
"call bind failed, err: %s", \
__LINE__, strerror(errno));
throw errno;
}
listen(m_fd, backlog);
if(timeout > 0) //server option
{
if((res = setserveropt(timeout)) != 0)
{
KL_SYS_ERRORLOG("file: "__FILE__", line: %d, " \
"acceptor set server option failed, err: %s", \
__LINE__, strerror(res));
throw res;
}
}
if((res = setnonblocking()) != 0)
{
KL_SYS_ERRORLOG("file: "__FILE__", line: %d, " \
"acceptor set nonblocking failed, err: %s", \
__LINE__, strerror(res));
throw res;
}
}
bool LiveAppModuleImpl::DispatchUdpPacket(BYTE* data, int size, const InetSocketAddress& remoteSockAddr, UINT proxyType, ExtraProxyEnum extraProxy)
{
m_Statistics.TotalFlow.Download.Record( size );
const size_t totalDataSize = size;
APP_EVENT( "DispatchUdpPacket " << make_buffer_pair(data, size) << " from " << remoteSockAddr );//<< " " << HexEncoding::Encode(string((const char*)data, size)) );
//BYTE* rawData = data;
//size_t rawSize = size;
this->RecordDownload(size);
SimpleSocketAddress sockAddr(remoteSockAddr);
if ((size_t) size >= sizeof( OLD_UDP_PACKET_HEAD ) + sizeof( GUID ) )
{
#ifndef _PPL_TEMP_DISABLE_TRACKER
PacketInputStream is( data, size );
// 可能是老报文，尝试由tracker模块处理
if (m_tracker->TryHandleResponse( is, remoteSockAddr, (BYTE)proxyType ))
{
m_trackerFlow.Download.Record(size);
return true;
}
#endif
}
// 解混淆
int len = PacketObfuscator::UnObfuscate( reinterpret_cast<BYTE*>( data ), size );
if ( len <= 0 )
{
// 解混淆失败，可能是vod的报文
if ( VODProxy::HandlePacket( data, size, remoteSockAddr, m_BootModule.get(), m_StunModule.get() ) )
{
return true;
}
m_Statistics.TotalInvalidPackets++;
if ( size >= 3 )
{
VIEW_ERROR( "LiveAppModuleImpl::DispatchUdpPacket unshuffle failed 1 " << make_tuple( size, len ) << sockAddr << " action=" << strings::format( "0x%02X%02X 0x%02X", data[0], data[1], data[2] ) );
}
else
{
VIEW_ERROR( "LiveAppModuleImpl::DispatchUdpPacket unshuffle failed 1 " << make_tuple( size, len ) << sockAddr );
}
//LIVE_ASSERT( false );
return false;
}
if ( size < len )
{
m_Statistics.TotalInvalidPackets++;
VIEW_ERROR( "LiveAppModuleImpl::DispatchUdpPacket unshuffle failed 2 " << make_tuple( size, len ) << sockAddr );
return false;
}
// 截去混淆部分的头，取出真正的报文部分
data += len;
size -= len;
PacketInputStream is( data, size );
NEW_UDP_PACKET_HEAD head;
is >> head;
if ( !is )
{
m_Statistics.TotalInvalidPackets++;
VIEW_ERROR( "LiveAppModuleImpl::DispatchUdpPacket invalid 2 " << size << " " << sockAddr );
return false;
}
if ( head.ProtocolVersion < SYNACAST_VERSION_3 )
{
m_Statistics.TotalInvalidPackets++;
// 检查版本号与MAGIC
APP_ERROR("Invalid protocol version " << head.ProtocolVersion << " " << sockAddr);
return false;
}
UDPT_INFO("LiveAppModuleImpl::DispatchUdp "<<sockAddr << " " << (int)head.Action);
// session 处理完
if ( head.Action & PPL_P2P_CONNECTION_ACTION_FLAG )
{
UDP_SESSION_INFO sessionInfo;
is >> sessionInfo;
if ( !is )
{
m_Statistics.TotalInvalidPackets++;
APP_ERROR("Invalid session size " << size << " " << sockAddr);
return false;
}
bool res = m_Manager->HandleUDPSessionPacket(is, head, sessionInfo, sockAddr);
if ( false == res )
{
m_Statistics.TotalInvalidPackets++;
}
else
{
m_Statistics.UDPConnectionFlow.Download.Record(totalDataSize);
}
return res;
}