public void SetComboBoxSelectedIndex(IPProtocol.IPProtocolType ipProtocolType)
{
for (int i = 0; i < comboBoxIPProtocols.Items.Count; i++)
{
object item = comboBoxIPProtocols.Items[i];
if ((IPProtocol.IPProtocolType)((DictionaryEntry)item).Key == ipProtocolType)
{
comboBoxIPProtocols.SelectedIndex = i;
break;
}
}
}
public IPPacket(IPVersions ipVersion,
IPProtocol.IPProtocolType ipProtocolType,
IPAddress sourceAddress,
IPAddress destinationAddress,
EthernetPacket ethernetPacket,
byte[] ipPacketPayload)
: base(EthernetFields_Fields.ETH_HEADER_LEN, null)
{
// determine how many bytes we need for this packet
int ipHeaderLength = ((ipVersion == IPVersions.IPv4) ? IPv4Fields_Fields.IP_HEADER_LEN : IPv6Fields_Fields.IPv6_HEADER_LEN);
int ipPayloadLength = (ipPacketPayload != null) ? ipPacketPayload.Length : 0;
int totalBytesRequired = 0;
totalBytesRequired += EthernetFields_Fields.ETH_HEADER_LEN;
totalBytesRequired += ipHeaderLength;
totalBytesRequired += ipPayloadLength;
// copy the ethernet packet header into the byte array
byte[] bytes = new Byte[totalBytesRequired];
Array.Copy(ethernetPacket.EthernetHeader, bytes, ethernetPacket.EthernetHeader.Length);
// set the packet bytes to our new, correct length
// buffer
//
// NOTE: we cannot say: Bytes = bytes; because
// the Bytes set property results in a call to
// InitIPPacket with a parameter of IPVersion which
// would result in the version being retrieved from
// an offset into the byte array but we haven't
// set the version in the byte array yet by setting
// this.IPVersion to a value
base.Bytes = bytes;
// call InitIPPacket to instantiate a packet of the proper type
InitIPPacket(ipVersion);
// set the header length to the default value for our ip version
IPHeaderLength = ipHeaderLength;
// set the EthernetPacket type to the proper ip version
base.EthernetProtocol = (ipVersion == IPVersions.IPv4) ? EthernetPacketType.IPv4 : EthernetPacketType.IPv6;
// set the ip protocol type
this.IPProtocol = ipProtocolType;
// set the current instance to the proper ip version
this.IPVersion = ipVersion;
// update the source and destination addresses
this.SourceAddress = sourceAddress;
this.DestinationAddress = destinationAddress;
// and set the payload to the payload that was passed in
if (ipPacketPayload != null)
{
Array.Copy(ipPacketPayload, 0, Bytes, _ipPayloadOffset, ipPacketPayload.Length);
IPPayloadLength = ipPacketPayload.Length;
}
else
{
IPPayloadLength = 0;
}
}
