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; } }