The MSG_GETSEGLIST (GetSegmentList) message contains a request for a download segment list. It is used when retrieving a set of segments.
Inheritance: PccrrPacket
示例#1
0
        /// <summary>
        /// Create a MsgGetSegList request.
        /// </summary>
        /// <param name="cryptoAlgoIdValues">The cryptoAlgoId.</param>
        /// <param name="requestID">Request ID.</param>
        /// <param name="segmentIDs">Array of segment IDs.</param>
        /// <param name="extensibleBlob">Extensible blob.</param>
        /// <returns>MsgGetSegList request.</returns>
        public PccrrGetSegListRequestPacket CreateMsgGetSegListRequest(
            CryptoAlgoId_Values cryptoAlgoIdValues,
            Guid requestID,
            byte[][] segmentIDs,
            byte[] extensibleBlob)
        {
            var packet = new PccrrGetSegListRequestPacket();

            var msgGetSegList = new MSG_GETSEGLIST();

            msgGetSegList.RequestID         = requestID;
            msgGetSegList.CountOfSegmentIDs = (uint)segmentIDs.Length;
            msgGetSegList.SegmentIDs        = new SegmentIDStructure[segmentIDs.Length];
            for (int i = 0; i < segmentIDs.Length; i++)
            {
                msgGetSegList.SegmentIDs[i] = new SegmentIDStructure(segmentIDs[i]);
            }
            ///[MS-PCCRR]Section 2.2.4.4 SizeOfExtensibleBlob: Size, in bytes, of the ExtensibleBlob field. Implementations MAY support extensible blobs in MSG_GETSEGLIST
            ///message.Implementations that do not support extensible blobs in MSG_GETSEGLIST messages MUST set SizeOfExtensibleBlob to zero and omit the ExtensibleBlob field.
            msgGetSegList.SizeOfExtensibleBlob = (uint)extensibleBlob.Length;
            msgGetSegList.ExtensibleBlob       = extensibleBlob;

            packet.MsgGetSegList = msgGetSegList;
            MESSAGE_HEADER messageHeader = PccrrUtitlity.CreateMessageHeader(cryptoAlgoIdValues, MsgType_Values.MSG_GETSEGLIST, new ProtoVersion {
                MajorVersion = 2, MinorVersion = 0
            });

            messageHeader.MsgSize += (uint)TypeMarshal.GetBlockMemorySize(msgGetSegList);
            packet.MessageHeader   = messageHeader;

            return(packet);
        }
示例#2
0
        /// <summary>
        /// Decode request message.
        /// </summary>
        /// <param name="rawdata">The raw data.</param>
        /// <param name="uri">The request uri.</param>
        /// <param name="method">The request method.</param>
        /// <returns>The PccrrPacket.</returns>
        public PccrrPacket DecodeRequestMessage(byte[] rawdata, Uri uri, HttpMethod method)
        {
            if (rawdata == null)
            {
                throw new ArgumentNullException("rawdata");
            }

            if (rawdata.Length == 0)
            {
                throw new ArgumentException("The rawdata should not be empty.");
            }

            int messageLength = 0;

            messageLength = rawdata.Length;

            PccrrPacket packet = null;

            if (messageLength > 0)
            {
                int index = 0;

                REQUEST_MESSAGE ret = new REQUEST_MESSAGE();
                ret.MESSAGEHEADER = this.DecodeMessageHeader(rawdata, ref index);

                switch (ret.MESSAGEHEADER.MsgType)
                {
                case MsgType_Values.MSG_NEGO_REQ:
                    PccrrNegoRequestPacket pccrrNegoRequestPacket = new PccrrNegoRequestPacket();

                    MSG_NEGO_REQ msgNEGOREQ = this.DecodeMSG_NEGO_REQ(rawdata, ref index);
                    pccrrNegoRequestPacket.MsgNegoReq    = msgNEGOREQ;
                    pccrrNegoRequestPacket.MessageHeader = ret.MESSAGEHEADER;
                    pccrrNegoRequestPacket.Method        = method;
                    pccrrNegoRequestPacket.Uri           = uri;
                    packet = pccrrNegoRequestPacket;
                    break;

                case MsgType_Values.MSG_GETBLKLIST:
                    PccrrGETBLKLISTRequestPacket pccrrGETBLKLISTRequestPacket = new PccrrGETBLKLISTRequestPacket();

                    MSG_GETBLKLIST msgGETBLKLIST = this.DecodeMSG_GETBLKLIST(rawdata, ref index);
                    pccrrGETBLKLISTRequestPacket.MsgGetBLKLIST = msgGETBLKLIST;
                    pccrrGETBLKLISTRequestPacket.MessageHeader = ret.MESSAGEHEADER;
                    pccrrGETBLKLISTRequestPacket.Method        = method;
                    pccrrGETBLKLISTRequestPacket.Uri           = uri;
                    packet = pccrrGETBLKLISTRequestPacket;
                    break;

                case MsgType_Values.MSG_GETBLKS:
                    PccrrGETBLKSRequestPacket pccrrGETBLKSRequestPacket = new PccrrGETBLKSRequestPacket();

                    MSG_GETBLKS msgGETBLKS = this.DecodeMSG_GETBLKS(rawdata, ref index);
                    pccrrGETBLKSRequestPacket.MsgGetBLKS    = msgGETBLKS;
                    pccrrGETBLKSRequestPacket.MessageHeader = ret.MESSAGEHEADER;
                    pccrrGETBLKSRequestPacket.Method        = method;
                    pccrrGETBLKSRequestPacket.Uri           = uri;
                    packet = pccrrGETBLKSRequestPacket;
                    break;

                case MsgType_Values.MSG_GETSEGLIST:
                    PccrrGetSegListRequestPacket pccrrGetSegListRequestPacket = new PccrrGetSegListRequestPacket();
                    pccrrGetSegListRequestPacket.MsgGetSegList = TypeMarshal.ToStruct <MSG_GETSEGLIST>(rawdata, ref index);
                    pccrrGetSegListRequestPacket.MessageHeader = ret.MESSAGEHEADER;
                    pccrrGetSegListRequestPacket.Method        = method;
                    pccrrGetSegListRequestPacket.Uri           = uri;
                    packet = pccrrGetSegListRequestPacket;
                    break;
                }
            }

            return(packet);
        }
        /// <summary>
        /// Decode request message.
        /// </summary>
        /// <param name="rawdata">The raw data.</param>
        /// <param name="uri">The request uri.</param>
        /// <param name="method">The request method.</param>
        /// <returns>The PccrrPacket.</returns>
        public PccrrPacket DecodeRequestMessage(byte[] rawdata, Uri uri, HttpMethod method)
        {
            if (rawdata == null)
            {
                throw new ArgumentNullException("rawdata");
            }

            if (rawdata.Length == 0)
            {
                throw new ArgumentException("The rawdata should not be empty.");
            }

            int messageLength = 0;

            messageLength = rawdata.Length;

            PccrrPacket packet = null;

            if (messageLength > 0)
            {
                int index = 0;

                REQUEST_MESSAGE ret = new REQUEST_MESSAGE();
                ret.MESSAGEHEADER = this.DecodeMessageHeader(rawdata, ref index);

                switch (ret.MESSAGEHEADER.MsgType)
                {
                    case MsgType_Values.MSG_NEGO_REQ:
                        PccrrNegoRequestPacket pccrrNegoRequestPacket = new PccrrNegoRequestPacket();

                        MSG_NEGO_REQ msgNEGOREQ = this.DecodeMSG_NEGO_REQ(rawdata, ref index);
                        pccrrNegoRequestPacket.MsgNegoReq = msgNEGOREQ;
                        pccrrNegoRequestPacket.MessageHeader = ret.MESSAGEHEADER;
                        pccrrNegoRequestPacket.Method = method;
                        pccrrNegoRequestPacket.Uri = uri;
                        packet = pccrrNegoRequestPacket;
                        break;
                    case MsgType_Values.MSG_GETBLKLIST:
                        PccrrGETBLKLISTRequestPacket pccrrGETBLKLISTRequestPacket = new PccrrGETBLKLISTRequestPacket();

                        MSG_GETBLKLIST msgGETBLKLIST = this.DecodeMSG_GETBLKLIST(rawdata, ref index);
                        pccrrGETBLKLISTRequestPacket.MsgGetBLKLIST = msgGETBLKLIST;
                        pccrrGETBLKLISTRequestPacket.MessageHeader = ret.MESSAGEHEADER;
                        pccrrGETBLKLISTRequestPacket.Method = method;
                        pccrrGETBLKLISTRequestPacket.Uri = uri;
                        packet = pccrrGETBLKLISTRequestPacket;
                        break;
                    case MsgType_Values.MSG_GETBLKS:
                        PccrrGETBLKSRequestPacket pccrrGETBLKSRequestPacket = new PccrrGETBLKSRequestPacket();

                        MSG_GETBLKS msgGETBLKS = this.DecodeMSG_GETBLKS(rawdata, ref index);
                        pccrrGETBLKSRequestPacket.MsgGetBLKS = msgGETBLKS;
                        pccrrGETBLKSRequestPacket.MessageHeader = ret.MESSAGEHEADER;
                        pccrrGETBLKSRequestPacket.Method = method;
                        pccrrGETBLKSRequestPacket.Uri = uri;
                        packet = pccrrGETBLKSRequestPacket;
                        break;

                    case MsgType_Values.MSG_GETSEGLIST:
                        PccrrGetSegListRequestPacket pccrrGetSegListRequestPacket = new PccrrGetSegListRequestPacket();
                        pccrrGetSegListRequestPacket.MsgGetSegList = TypeMarshal.ToStruct<MSG_GETSEGLIST>(rawdata, ref index);
                        pccrrGetSegListRequestPacket.MessageHeader = ret.MESSAGEHEADER;
                        pccrrGetSegListRequestPacket.Method = method;
                        pccrrGetSegListRequestPacket.Uri = uri;
                        packet = pccrrGetSegListRequestPacket;
                        break;
                }
            }

            return packet;
        }
        /// <summary>
        /// Create a MsgGetSegList request.
        /// </summary>
        /// <param name="cryptoAlgoIdValues">The cryptoAlgoId.</param>
        /// <param name="requestID">Request ID.</param>
        /// <param name="segmentIDs">Array of segment IDs.</param>
        /// <param name="extensibleBlob">Extensible blob.</param>
        /// <returns>MsgGetSegList request.</returns>
        public PccrrGetSegListRequestPacket CreateMsgGetSegListRequest(
            CryptoAlgoId_Values cryptoAlgoIdValues,
            Guid requestID,
            byte[][] segmentIDs,
            byte[] extensibleBlob)
        {
            var packet = new PccrrGetSegListRequestPacket();

            var msgGetSegList = new MSG_GETSEGLIST();
            msgGetSegList.RequestID = requestID;
            msgGetSegList.CountOfSegmentIDs = (uint)segmentIDs.Length;
            msgGetSegList.SegmentIDs = new SegmentIDStructure[segmentIDs.Length];
            for (int i = 0; i < segmentIDs.Length; i++)
            {
                msgGetSegList.SegmentIDs[i] = new SegmentIDStructure(segmentIDs[i]);
            }
            ///[MS-PCCRR]Section 2.2.4.4 SizeOfExtensibleBlob: Size, in bytes, of the ExtensibleBlob field. Implementations MAY support extensible blobs in MSG_GETSEGLIST
            ///message.Implementations that do not support extensible blobs in MSG_GETSEGLIST messages MUST set SizeOfExtensibleBlob to zero and omit the ExtensibleBlob field.
            msgGetSegList.SizeOfExtensibleBlob = (uint)extensibleBlob.Length;
            msgGetSegList.ExtensibleBlob = extensibleBlob;

            packet.MsgGetSegList = msgGetSegList;
            MESSAGE_HEADER messageHeader = PccrrUtitlity.CreateMessageHeader(cryptoAlgoIdValues, MsgType_Values.MSG_GETSEGLIST, new ProtoVersion { MajorVersion = 2, MinorVersion = 0 });
            messageHeader.MsgSize += (uint)TypeMarshal.GetBlockMemorySize(msgGetSegList);
            packet.MessageHeader = messageHeader;

            return packet;
        }
 protected override void HandlePccrrGetSegListRequestPacket(PccrrGetSegListRequestPacket pccrrGetSegListRequest)
 {
     var pccrrSegListResponsePacket = pccrrServer.CreateSegListResponse(
             cryptoAlgoId,
             pccrrGetSegListRequest.MsgGetSegList.RequestID,
             new BLOCK_RANGE[] { new BLOCK_RANGE { Index = 0, Count = pccrrGetSegListRequest.MsgGetSegList.CountOfSegmentIDs } });
     pccrrServer.SendPacket(pccrrSegListResponsePacket);
 }
 protected override void HandlePccrrGetSegListRequestPacket(PccrrGetSegListRequestPacket pccrrGetSegListRequest)
 {
     // Not supported in v1
     throw new NotImplementedException();
 }
 protected abstract void HandlePccrrGetSegListRequestPacket(PccrrGetSegListRequestPacket pccrrGetSegListRequest);