/// <summary>
/// Runs the scenario.
/// </summary>
public override void Run()
{
Host H1 = new Host("H1"), H2 = new Host("H2");
H1.RegisterInterface(new Interface(new Nic(
new MacAddress("AA:AA:AA:AA:AA:AA")), "eth0", "192.168.1.2/24",
"192.168.1.1"));
H2.RegisterInterface(new Interface(new Nic(
new MacAddress("BB:BB:BB:BB:BB:BB")), "eth0", "192.168.1.3/24",
"192.168.1.1"));
// Attach both stations to a "thick" Ethernet 10BASE5 cable.
new C10Base5(250)
.Pierce(0, H1.Interfaces["eth0"].Nic.Connector)
.Pierce(250, H2.Interfaces["eth0"].Nic.Connector);
var dummyPacket1 = new IpPacket(new IpAddress("192.168.1.3"),
new IpAddress("192.168.1.2"), IpProtocol.Tcp, new byte[] { 1, 2, 3, 4 });
var dummyPacket2 = new IpPacket(new IpAddress("192.168.1.2"),
new IpAddress("192.168.1.3"), IpProtocol.Tcp, new byte[] { 1, 2, 3, 4 });
// Station H1 triggers a transmission at time t = 0ns.
Simulation.Callback(0, () => {
H1.Interfaces["eth0"].Output(new MacAddress("BB:BB:BB:BB:BB:BB"),
dummyPacket1.Serialize());
});
// Station H2 triggers a transmissin at time t = 1000ns.
Simulation.Callback(1000, () => {
H2.Interfaces["eth0"].Output(new MacAddress("AA:AA:AA:AA:AA:AA"),
dummyPacket2.Serialize());
});
Simulation.AddObject(H1.Hostname, H1);
Simulation.AddObject(H2.Hostname, H2);
Simulation.Start();
}
/// <summary>
/// Returns the IP header and the first 8 byte of the IP data segment
/// as an array of bytes.
/// </summary>
/// <param name="packet">The IP packet whose data to return.</param>
/// <returns>An arry of bytes containing the IP header and the first
/// 8 bytes of IP data of the specified IP packet.</returns>
/// <exception cref="ArgumentNullException">Thrown if the packet
/// parameter is null.</exception>
/// <remarks>Many ICMP packets include the IP header and the first 8
/// bytes of data of an IP packet.</remarks>
static byte[] GetIpData(IpPacket packet)
{
packet.ThrowIfNull("packet");
// Many ICMP packets include the 20-byte IP header and the first
// 8 bytes of an IP packet.
var serialized = packet.Serialize();
var size = Math.Min(20 + 8, serialized.Length);
var data = new byte[size];
Array.Copy(serialized, data, data.Length);
return(data);
}
/// <summary>
/// Returns the IP header and the first 8 byte of the IP data segment
/// as an array of bytes.
/// </summary>
/// <param name="packet">The IP packet whose data to return.</param>
/// <returns>An arry of bytes containing the IP header and the first
/// 8 bytes of IP data of the specified IP packet.</returns>
/// <exception cref="ArgumentNullException">Thrown if the packet
/// parameter is null.</exception>
/// <remarks>Many ICMP packets include the IP header and the first 8
/// bytes of data of an IP packet.</remarks>
static byte[] GetIpData(IpPacket packet) {
packet.ThrowIfNull("packet");
// Many ICMP packets include the 20-byte IP header and the first
// 8 bytes of an IP packet.
var serialized = packet.Serialize();
var size = Math.Min(20 + 8, serialized.Length);
var data = new byte[size];
Array.Copy(serialized, data, data.Length);
return data;
}
