Method SendUDP

pcsx2/DEV9/sockets.cpp:464–527

}

bool SocketAdapter::SendUDP(ConnectionKey Key, IP_Packet* ipPkt)
{
	IP_PayloadPtr* ipPayload = static_cast<IP_PayloadPtr*>(ipPkt->GetPayload());
	UDP_Packet udp(ipPayload->data, ipPayload->GetLength());

	Key.ps2Port = udp.sourcePort;
	Key.srvPort = udp.destinationPort;

	const int res = SendFromConnection(Key, ipPkt);
	if (res == 1)
		return true;
	else if (res == 0)
		return false;
	else
	{
		// Always bind the UDP source port
		// PS2 software can run into issues if the source port is not preserved
		UDP_FixedPort* fPort = nullptr;
		BaseSession* fSession;
		if (fixedUDPPorts.TryGetValue(udp.sourcePort, &fSession))
		{
			fPort = static_cast<UDP_FixedPort*>(fSession);
		}
		else
		{
			ConnectionKey fKey{};
			fKey.protocol = static_cast<u8>(IP_Type::UDP);
			fKey.ps2Port = udp.sourcePort;
			fKey.srvPort = 0;

			Console.WriteLn("DEV9: Socket: Binding UDP fixed port %d", udp.sourcePort);

			fPort = new UDP_FixedPort(fKey, adapterIP, udp.sourcePort);
			fPort->AddConnectionClosedHandler([&](BaseSession* session) { HandleFixedPortClosed(session); });

			fPort->destIP = {};
			fPort->sourceIP = dhcpServer.ps2IP;

			connections.Add(fKey, fPort);
			fixedUDPPorts.Add(udp.sourcePort, fPort);

			fPort->Init();
		}

		Console.WriteLn("DEV9: Socket: Creating New UDP Connection from fixed port %d to %d", udp.sourcePort, udp.destinationPort);
		UDP_Session* s = fPort->NewClientSession(Key,
			ipPkt->destinationIP == dhcpServer.broadcastIP || ipPkt->destinationIP == IP_Address{{{255, 255, 255, 255}}},
			(ipPkt->destinationIP.bytes[0] & 0xF0) == 0xE0);

		// If we are unable to bind to the port, fall back to a dynamic port
		if (s == nullptr)
		{
			Console.Error("DEV9: Socket: Failed to Create New UDP Connection from fixed port");
			Console.WriteLn("DEV9: Socket: Retrying with dynamic port to %d", udp.destinationPort);
			s = new UDP_Session(Key, adapterIP);
		}

		s->AddConnectionClosedHandler([&](BaseSession* session) { HandleConnectionClosed(session); });