/// <summary>
/// Receive data
/// </summary>
/// <param name="timeout">timeout value, default 5000ms</param>
/// <returns>time value (-1 = timeout)</returns>
/// <exception cref="InvalidOperationException">Thrown on fatal error (contact support).</exception>
private int Receive(int timeout = 5000)
{
int second = 0;
int _deltaT = 0;
while (rxBuffer.Count < 1)
{
if (second > (timeout / 1000))
{
return(-1);
}
if (_deltaT != RTC.Second)
{
second++;
_deltaT = RTC.Second;
}
}
var packet = new DHCPPacket(rxBuffer.Dequeue().RawData);
if (packet.MessageType == 2) //Boot Reply
{
if (packet.RawData[284] == 0x02) //Offer packet received
{
Global.mDebugger.Send("Offer received.");
return(SendRequestPacket(packet.Client));
}
else if (packet.RawData[284] == 0x05 || packet.RawData[284] == 0x06) //ACK or NAK DHCP packet received
{
var ack = new DHCPAck(packet.RawData);
if (asked)
{
Apply(ack, true);
}
else
{
Apply(ack);
}
}
}
return(second);
}
/*
* Method called to applied the differents options received in the DHCP packet ACK
**/
/// <summary>
/// Apply the new IP configuration received.
/// </summary>
/// <param name="Options">DHCPOption class using the packetData from the received dhcp packet.</param>
/// <param name="message">Enable/Disable the displaying of messages about DHCP applying and conf. Disabled by default.
/// </param>
private void Apply(DHCPAck packet, bool message = false)
{
NetworkStack.RemoveAllConfigIP();
//cf. Roadmap. (have to change this, because some network interfaces are not configured in dhcp mode) [have to be done in 0.5.x]
foreach (NetworkDevice networkDevice in NetworkDevice.Devices)
{
if (packet.Client.ToString() == null ||
packet.Client.ToString() == null ||
packet.Client.ToString() == null ||
packet.Client.ToString() == null)
{
throw new Exception("Parsing DHCP ACK Packet failed, can't apply network configuration.");
}
else
{
if (message)
{
Global.mDebugger.Send("[DHCP ACK][" + networkDevice.Name + "] Packet received, applying IP configuration...");
Global.mDebugger.Send(" IP Address : " + packet.Client.ToString());
Global.mDebugger.Send(" Subnet mask : " + packet.Subnet.ToString());
Global.mDebugger.Send(" Gateway : " + packet.Server.ToString());
Global.mDebugger.Send(" DNS server : " + packet.DNS.ToString());
}
IPConfig.Enable(networkDevice, packet.Client, packet.Subnet, packet.Server);
DNSConfig.Add(packet.DNS);
if (message)
{
Global.mDebugger.Send("[DHCP CONFIG][" + networkDevice.Name + "] IP configuration applied.");
asked = false;
}
}
}
Close();
}
