104 lines
2.8 KiB
C#
104 lines
2.8 KiB
C#
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/*
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This file is part of PacketDotNet
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PacketDotNet is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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PacketDotNet is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PacketDotNet. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Copyright 2010 Evan Plaice <evanplaice@gmail.com>
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*/
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using System;
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using MiscUtil.Conversion;
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using PacketDotNet.Utils;
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namespace PacketDotNet.Tcp
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{
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/// <summary>
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/// A Time Stamp Option
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/// Used for RTTM (Round Trip Time Measurement)
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/// and PAWS (Protect Against Wrapped Sequences)
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///
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/// Opsoletes the Echo and EchoReply option fields
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/// </summary>
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/// <remarks>
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/// References:
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/// http://datatracker.ietf.org/doc/rfc1323/
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/// </remarks>
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public class TimeStamp : Option
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{
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#region Constructors
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/// <summary>
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/// Creates a Timestamp Option
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/// </summary>
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/// <param name="bytes">
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/// A <see cref="System.Byte[]"/>
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/// </param>
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/// <param name="offset">
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/// A <see cref="System.Int32"/>
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/// </param>
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/// <param name="length">
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/// A <see cref="System.Int32"/>
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/// </param>
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public TimeStamp(byte[] bytes, int offset, int length) :
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base(bytes, offset, length)
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{ }
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#endregion
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#region Properties
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/// <summary>
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/// The Timestamp value
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/// </summary>
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public uint Value
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{
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get { return EndianBitConverter.Big.ToUInt32(Bytes, ValueFieldOffset); }
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}
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/// <summary>
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/// The Echo Reply
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/// </summary>
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public uint EchoReply
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{
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get { return EndianBitConverter.Big.ToUInt32(Bytes, EchoReplyFieldOffset); }
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}
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#endregion
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#region Methods
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/// <summary>
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/// Returns the Option info as a string
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/// </summary>
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/// <returns>
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/// A <see cref="System.String"/>
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/// </returns>
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public override string ToString()
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{
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return "[" + Kind.ToString() + ": Value=" + Value.ToString() + " EchoReply=" + EchoReply.ToString() + "]";
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}
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#endregion
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#region Members
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// the offset (in bytes) of the Value Field
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const int ValueFieldOffset = 2;
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// the offset (in bytes) of the Echo Reply Field
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const int EchoReplyFieldOffset = 6;
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#endregion
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}
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}
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