仿真平台内核初版 -tlib库 包含<sparc arm riscv powerPC>

lib/Packet.Net/PacketDotNet/Tcp/TimeStamp.cs

@@ -0,0 +1,104 @@
+/*
+This file is part of PacketDotNet
+
+PacketDotNet is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+PacketDotNet is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with PacketDotNet.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+ *  Copyright 2010 Evan Plaice <evanplaice@gmail.com>
+ */
+using System;
+using MiscUtil.Conversion;
+using PacketDotNet.Utils;
+
+namespace PacketDotNet.Tcp
+{
+    /// <summary>
+    /// A Time Stamp Option
+    ///  Used for RTTM (Round Trip Time Measurement)
+    ///  and PAWS (Protect Against Wrapped Sequences)
+    ///
+    ///  Opsoletes the Echo and EchoReply option fields
+    /// </summary>
+    /// <remarks>
+    /// References:
+    ///  http://datatracker.ietf.org/doc/rfc1323/
+    /// </remarks>
+    public class TimeStamp : Option
+    {
+        #region Constructors
+
+        /// <summary>
+        /// Creates a Timestamp Option
+        /// </summary>
+        /// <param name="bytes">
+        /// A <see cref="System.Byte[]"/>
+        /// </param>
+        /// <param name="offset">
+        /// A <see cref="System.Int32"/>
+        /// </param>
+        /// <param name="length">
+        /// A <see cref="System.Int32"/>
+        /// </param>
+        public TimeStamp(byte[] bytes, int offset, int length) :
+            base(bytes, offset, length)
+        { }
+
+        #endregion
+
+        #region Properties
+
+        /// <summary>
+        /// The Timestamp value
+        /// </summary>
+        public uint Value
+        {
+            get { return EndianBitConverter.Big.ToUInt32(Bytes, ValueFieldOffset); }
+        }
+
+        /// <summary>
+        /// The Echo Reply
+        /// </summary>
+        public uint EchoReply
+        {
+            get { return EndianBitConverter.Big.ToUInt32(Bytes, EchoReplyFieldOffset); }
+        }
+
+        #endregion
+
+        #region Methods
+
+        /// <summary>
+        /// Returns the Option info as a string
+        /// </summary>
+        /// <returns>
+        /// A <see cref="System.String"/>
+        /// </returns>
+        public override string ToString()
+        {
+            return "[" + Kind.ToString() + ": Value=" + Value.ToString() + " EchoReply=" + EchoReply.ToString() + "]";
+        }
+
+        #endregion
+
+        #region Members
+
+        // the offset (in bytes) of the Value Field
+        const int ValueFieldOffset = 2;
+
+        // the offset (in bytes) of the Echo Reply Field
+        const int EchoReplyFieldOffset = 6;
+
+        #endregion
+    }
+}