/// <summary>
/// IPv4 handler.
/// </summary>
/// <param name="packetData">Packet data.</param>
/// <exception cref="sys.ArgumentOutOfRangeException">Thrown on fatal error (contact support).</exception>
/// <exception cref="sys.IO.IOException">Thrown on IO error.</exception>
/// <exception cref="sys.ArgumentException">Thrown on fatal error (contact support).</exception>
/// <exception cref="sys.OverflowException">Thrown if packetData array length is greater than Int32.MaxValue.</exception>
internal static void IPv4Handler(byte[] packetData)
{
var ip_packet = new IPPacket(packetData);
if (ip_packet.SourceIP == null)
{
Global.mDebugger.Send("SourceIP null in IPv4Handler!");
}
ARPCache.Update(ip_packet.SourceIP, ip_packet.SourceMAC);
if ((NetworkStack.AddressMap.ContainsKey(ip_packet.DestinationIP.Hash) == true) ||
(ip_packet.DestinationIP.address[3] == 255))
{
switch (ip_packet.Protocol)
{
case 1:
ICMPPacket.ICMPHandler(packetData);
break;
case 6:
TCPPacket.TCPHandler(packetData);
break;
case 17:
UDPPacket.UDPHandler(packetData);
break;
}
}
else if (NetworkStack.MACMap.ContainsKey(ip_packet.DestinationMAC.Hash))
{
DHCPPacket.DHCPHandler(packetData);
}
}
internal static void IPv4Handler(byte[] packetData)
{
IPPacket ip_packet = new IPPacket(packetData);
Kernel.debugger.Send("[Received] " + ip_packet.ToString());
if (ip_packet.SourceIP == null)
{
Kernel.debugger.Send("SourceIP null in IPv4Handler!");
}
ARPCache.Update(ip_packet.SourceIP, ip_packet.SourceMAC);
if ((NetworkStack.AddressMap.ContainsKey(ip_packet.DestinationIP.Hash) == true) ||
(ip_packet.DestinationIP.address[3] == 255))
{
switch (ip_packet.Protocol)
{
case 1:
ICMPPacket.ICMPHandler(packetData);
break;
/*case 6:
* TCPPacket.TCPHandler(packetData);
* break;*/
case 17:
UDPPacket.UDPHandler(packetData);
break;
}
}
else if (NetworkStack.MACMap.ContainsKey(ip_packet.DestinationMAC.Hash))
{
DHCPPacket.DHCPHandler(packetData);
}
}