// GET response message PDU.// Copyright (C) 2008-2010 Malcolm Crowe, Lex Li, and other contributors.// // Permission is hereby granted, free of charge, to any person obtaining a copy of this// software and associated documentation files (the "Software"), to deal in the Software// without restriction, including without limitation the rights to use, copy, modify, merge,// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons// to whom the Software is furnished to do so, subject to the following conditions:// // The above copyright notice and this permission notice shall be included in all copies or// substantial portions of the Software.// // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER// DEALINGS IN THE SOFTWARE. /* * Created by SharpDevelop. * User: lextm * Date: 2008/5/1 * Time: 18:10 *  * To change this template use Tools | Options | Coding | Edit Standard Headers. */ using System;using System.Collections.Generic;using System.Globalization;using System.IO; namespace GSF.Net.Snmp{    /// <summary>    /// Response PDU.    /// </summary>    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Pdu")]    public sealed class ResponsePdu : ISnmpPdu    {        private readonly Sequence _varbindSection;        private readonly byte[] _length;        private byte[] _raw;         /// <summary>        /// Creates a <see cref="ResponsePdu"/> with all contents.        /// </summary>        /// <param name="requestId">The request ID.</param>        /// <param name="errorStatus">Error status.</param>        /// <param name="errorIndex">Error index.</param>        /// <param name="variables">Variables.</param>        public ResponsePdu(int requestId, ErrorCode errorStatus, int errorIndex, IList<Variable> variables)        {            if (variables == null)            {                throw new ArgumentNullException(nameof(variables));            }             RequestId = new Integer32(requestId);            ErrorStatus = new Integer32((int)errorStatus);            ErrorIndex = new Integer32(errorIndex);            Variables = variables;            _varbindSection = Variable.Transform(variables);        }         /// <summary>        /// Initializes a new instance of the <see cref="ResponsePdu"/> class.        /// </summary>        /// <param name="length">The length data.</param>        /// <param name="stream">The stream.</param>        public ResponsePdu(Tuple<int, byte[]> length, Stream stream)        {            if (length == null)            {                throw new ArgumentNullException(nameof(length));            }             if (stream == null)            {                throw new ArgumentNullException(nameof(stream));            }             RequestId = (Integer32)DataFactory.CreateSnmpData(stream);            ErrorStatus = (Integer32)DataFactory.CreateSnmpData(stream);            ErrorIndex = (Integer32)DataFactory.CreateSnmpData(stream);            _varbindSection = (Sequence)DataFactory.CreateSnmpData(stream);            Variables = Variable.Transform(_varbindSection);            _length = length.Item2;        }         /// <summary>        /// Gets the request ID.        /// </summary>        /// <value>The request ID.</value>        public Integer32 RequestId { get; private set; }         /// <summary>        /// Error status.        /// </summary>        public Integer32 ErrorStatus { get; private set; }         /// <summary>        /// Error index.        /// </summary>        public Integer32 ErrorIndex { get; private set; }         /// <summary>        /// Variables.        /// </summary>        public IList<Variable> Variables { get; private set; }         /// <summary>        /// Type code.        /// </summary>        public SnmpType TypeCode        {            get            {                return SnmpType.ResponsePdu;            }        }         /// <summary>        /// Appends the bytes to <see cref="Stream"/>.        /// </summary>        /// <param name="stream">The stream.</param>        public void AppendBytesTo(Stream stream)        {            if (stream == null)            {                throw new ArgumentNullException(nameof(stream));            }             if (_raw == null)            {                _raw = ByteTool.ParseItems(RequestId, ErrorStatus, ErrorIndex, _varbindSection);            }             stream.AppendBytes(TypeCode, _length, _raw);        }         /// <summary>        /// Returns a <see cref="string"/> that represents this <see cref="ResponsePdu"/>/        /// </summary>        /// <returns></returns>        public override string ToString()        {            return string.Format(                CultureInfo.InvariantCulture,                "Response PDU: seq: {0}; status: {1}; index: {2}; variable count: {3}",                RequestId,                ErrorStatus,                ErrorIndex,                Variables.Count.ToString(CultureInfo.InvariantCulture));        }    }}