// Actually checks to see if data can go to the internet (via UDP 53)
private void DoCheckDNSNetwork(object oIn)
{
try
{
StateManager CurState = (StateManager)oIn;
byte[] bIDOut = new byte[8];
// First, try a DNS ping through proxy (whether it's on or not)
EDNSPacket Packet = SendUdpNetworkPacket(g_sProxyIP, g_sIDIP, 53, 0x10, false, bIDOut);
DNSPacket.PacketExplode pe = new DNSPacket.PacketExplode(Packet.GetResponsePacket());
// Retry over TCP if truncated
if (pe.IsTruncated())
{
Packet = SendTcpNetworkPacket(g_sProxyIP, g_sIDIP, 53, 0x10, false, bIDOut);
}
if (Packet.GetResponsePacket().Length > 0)
{
// We got a result through the proxy; all is well
CurState.SetEncryptedState(true);
CurState.SetNetworkState(true, true);
}
else
{
// We did not get a response through the proxy, so encryption is a no-go
CurState.SetEncryptedState(false);
// Try a second DNS ping, this time through the OpenDNS resolver
Packet = SendUdpNetworkPacket(g_sResolverIP, g_sIDIP, 53, 0x10, false, bIDOut);
if (Packet.GetResponsePacket().Length > 0)
{
// We have at least SOME internet connection
CurState.SetNetworkState(true, true);
}
else
{
// We could not reach the network at all
CurState.SetNetworkState(false, true);
}
}
}
catch (Exception Ex)
{
// Do nothing
}
}
// Actually checks to see if data can go to the internet (via UDP 53)
private void DoCheckDNSNetwork(object oIn)
{
try
{
StateManager CurState = (StateManager)oIn;
byte[] bIDOut = new byte[8];
// First, try a DNS ping through proxy (whether it's on or not)
EDNSPacket Packet = SendUdpNetworkPacket(g_sProxyIP, g_sIDIP, 53, 0x10, false, bIDOut);
DNSPacket.PacketExplode pe = new DNSPacket.PacketExplode(Packet.GetResponsePacket());
// Retry over TCP if truncated
if (pe.IsTruncated())
{
Packet = SendTcpNetworkPacket(g_sProxyIP, g_sIDIP, 53, 0x10, false, bIDOut);
}
if (Packet.GetResponsePacket().Length > 0)
{
// We got a result through the proxy; all is well
CurState.SetEncryptedState(true);
CurState.SetNetworkState(true, true);
}
else
{
// We did not get a response through the proxy, so encryption is a no-go
CurState.SetEncryptedState(false);
// Try a second DNS ping, this time through the OpenDNS resolver
Packet = SendUdpNetworkPacket(g_sResolverIP, g_sIDIP, 53, 0x10, false, bIDOut);
if (Packet.GetResponsePacket().Length > 0)
{
// We have at least SOME internet connection
CurState.SetNetworkState(true, true);
}
else
{
// We could not reach the network at all
CurState.SetNetworkState(false, true);
}
}
}
catch (Exception Ex)
{
// Do nothing
}
}
