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Redone network packet abstraction. Prepared for easy access to packet data.

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This commit is contained in:
lotodore
2007-04-08 16:18:20 +00:00
parent 6f458ec012
commit 2f5c8d7da1
14 changed files with 656 additions and 230 deletions
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src/net/common/receiverhelper.cpp
+8 -40
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@@ -98,50 +98,18 @@ ReceiverHelper::InternalGetPacket()
// This is necessary, because we use TCP.
// Packets may be received in multiple chunks or
// several packets may be received at once.
if (m_tmpInBufSize >= sizeof(NetPacketHeader))
if (m_tmpInBufSize >= MIN_PACKET_SIZE)
{
NetPacketHeader *tmpHeader = (NetPacketHeader *)m_tmpInBuf;
u_int16_t tmpLen = ntohs(tmpHeader->length);
if (tmpLen < sizeof(NetPacketHeader)
|| tmpLen > MAX_PACKET_SIZE)
try
{
// Invalid packet - reset input buffer.
// This call will also handle the memmove stuff, i.e.
// buffering for partial packets.
tmpPacket = NetPacket::Create(m_tmpInBuf, m_tmpInBufSize);
} catch (const NetException &)
{
// Reset buffer on error.
m_tmpInBufSize = 0;
}
else if (m_tmpInBufSize >= tmpLen)
{
tmpPacket = InternalCreateNetPacket(tmpHeader);
m_tmpInBufSize -= tmpLen;
}
}
return tmpPacket;
}
boost::shared_ptr<NetPacket>
ReceiverHelper::InternalCreateNetPacket(const NetPacketHeader *p)
{
boost::shared_ptr<NetPacket> tmpPacket;
try
{
switch(ntohs(p->type))
{
case NET_TYPE_INIT:
tmpPacket = boost::shared_ptr<NetPacket>(new NetPacketInit);
break;
case NET_TYPE_INIT_ACK:
tmpPacket = boost::shared_ptr<NetPacket>(new NetPacketInitAck);
break;
case NET_TYPE_GAME_START:
tmpPacket = boost::shared_ptr<NetPacket>(new NetPacketGameStart);
break;
}
if (tmpPacket.get())
tmpPacket->SetData(p);
} catch (const NetException &)
{
tmpPacket.reset();
}
return tmpPacket;
}