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Add packet inspector API.

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This commit is contained in:
Christian
2021-01-24 20:58:15 +01:00
parent e1d39a3fef
commit c1001db450
26 changed files with 480 additions and 289 deletions
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Source/MQTTnet.AspnetCore/MqttWebSocketServerAdapter.cs
+1 -1
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@@ -49,7 +49,7 @@ namespace MQTTnet.AspNetCore
var formatter = new MqttPacketFormatterAdapter(writer);
var channel = new MqttWebSocketChannel(webSocket, endpoint, isSecureConnection, clientCertificate);
using (var channelAdapter = new MqttChannelAdapter(channel, formatter, _rootLogger))
using (var channelAdapter = new MqttChannelAdapter(channel, formatter, null, _rootLogger))
{
await clientHandler(channelAdapter).ConfigureAwait(false);
}
Source/MQTTnet.Extensions.WebSocket4Net/WebSocket4NetMqttClientAdapterFactory.cs
+15 -7
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@@ -7,7 +7,7 @@ using System;
namespace MQTTnet.Extensions.WebSocket4Net
{
public class WebSocket4NetMqttClientAdapterFactory : IMqttClientAdapterFactory
public sealed class WebSocket4NetMqttClientAdapterFactory : IMqttClientAdapterFactory
{
readonly IMqttNetLogger _logger;
@@ -23,14 +23,22 @@ namespace MQTTnet.Extensions.WebSocket4Net
switch (options.ChannelOptions)
{
case MqttClientTcpOptions _:
{
return new MqttChannelAdapter(new MqttTcpChannel(options), new MqttPacketFormatterAdapter(options.ProtocolVersion), _logger);
}
{
return new MqttChannelAdapter(
new MqttTcpChannel(options),
new MqttPacketFormatterAdapter(options.ProtocolVersion),
options.PacketInspector,
_logger);
}
case MqttClientWebSocketOptions webSocketOptions:
{
return new MqttChannelAdapter(new WebSocket4NetMqttChannel(options, webSocketOptions), new MqttPacketFormatterAdapter(options.ProtocolVersion), _logger);
}
{
return new MqttChannelAdapter(
new WebSocket4NetMqttChannel(options, webSocketOptions),
new MqttPacketFormatterAdapter(options.ProtocolVersion),
options.PacketInspector,
_logger);
}
default:
{
Source/MQTTnet.Server/MQTTnet.Server.csproj
+1 -1
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@@ -1,7 +1,7 @@
<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFrameworks>netcoreapp3.1;net5.0</TargetFrameworks>
<TargetFrameworks>net5.0</TargetFrameworks>
<AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
<AssemblyName>MQTTnet.Server</AssemblyName>
<RootNamespace>MQTTnet.Server</RootNamespace>
Source/MQTTnet/Adapter/MqttChannelAdapter.cs
+123 -11
View File
@@ -11,6 +11,7 @@ using System.Runtime.InteropServices;
using System.Security.Cryptography.X509Certificates;
using System.Threading;
using System.Threading.Tasks;
using MQTTnet.Diagnostics.PacketInspection;
namespace MQTTnet.Adapter
{
@@ -19,26 +20,26 @@ namespace MQTTnet.Adapter
const uint ErrorOperationAborted = 0x800703E3;
const int ReadBufferSize = 4096;
readonly byte[] _singleByteBuffer = new byte[1];
readonly byte[] _fixedHeaderBuffer = new byte[2];
readonly MqttPacketInspectorHandler _packetInspectorHandler;
readonly IMqttNetScopedLogger _logger;
readonly IMqttChannel _channel;
readonly MqttPacketReader _packetReader;
readonly byte[] _fixedHeaderBuffer = new byte[2];
readonly AsyncLock _syncRoot = new AsyncLock();
long _bytesReceived;
long _bytesSent;
public MqttChannelAdapter(IMqttChannel channel, MqttPacketFormatterAdapter packetFormatterAdapter, IMqttNetLogger logger)
public MqttChannelAdapter(IMqttChannel channel, MqttPacketFormatterAdapter packetFormatterAdapter, IMqttPacketInspector packetInspector, IMqttNetLogger logger)
{
if (logger == null) throw new ArgumentNullException(nameof(logger));
_channel = channel ?? throw new ArgumentNullException(nameof(channel));
PacketFormatterAdapter = packetFormatterAdapter ?? throw new ArgumentNullException(nameof(packetFormatterAdapter));
_packetReader = new MqttPacketReader(_channel);
_packetInspectorHandler = new MqttPacketInspectorHandler(packetInspector, logger);
if (logger == null) throw new ArgumentNullException(nameof(logger));
_logger = logger.CreateScopedLogger(nameof(MqttChannelAdapter));
}
@@ -124,6 +125,7 @@ namespace MQTTnet.Adapter
try
{
var packetData = PacketFormatterAdapter.Encode(packet);
_packetInspectorHandler.BeginSendPacket(packetData);
await _channel.WriteAsync(packetData.Array, packetData.Offset, packetData.Count, cancellationToken).ConfigureAwait(false);
@@ -154,12 +156,16 @@ namespace MQTTnet.Adapter
try
{
_packetInspectorHandler.BeginReceivePacket();
var receivedPacket = await ReceiveAsync(cancellationToken).ConfigureAwait(false);
if (receivedPacket == null || cancellationToken.IsCancellationRequested)
{
return null;
}
_packetInspectorHandler.EndReceivePacket();
Interlocked.Add(ref _bytesSent, receivedPacket.TotalLength);
if (PacketFormatterAdapter.ProtocolVersion == MqttProtocolVersion.Unknown)
@@ -215,7 +221,12 @@ namespace MQTTnet.Adapter
async Task<ReceivedMqttPacket> ReceiveAsync(CancellationToken cancellationToken)
{
var readFixedHeaderResult = await _packetReader.ReadFixedHeaderAsync(_fixedHeaderBuffer, cancellationToken).ConfigureAwait(false);
if (cancellationToken.IsCancellationRequested)
{
return null;
}
var readFixedHeaderResult = await ReadFixedHeaderAsync(cancellationToken).ConfigureAwait(false);
if (cancellationToken.IsCancellationRequested)
{
@@ -234,7 +245,7 @@ namespace MQTTnet.Adapter
var fixedHeader = readFixedHeaderResult.FixedHeader;
if (fixedHeader.RemainingLength == 0)
{
return new ReceivedMqttPacket(fixedHeader.Flags, null, 2);
return new ReceivedMqttPacket(fixedHeader.Flags, new MqttPacketBodyReader(new byte[0], 0, 0), 2);
}
var bodyLength = fixedHeader.RemainingLength;
@@ -266,6 +277,8 @@ namespace MQTTnet.Adapter
bodyOffset += readBytes;
} while (bodyOffset < bodyLength);
_packetInspectorHandler.FillReceiveBuffer(body);
var bodyReader = new MqttPacketBodyReader(body, 0, bodyLength);
return new ReceivedMqttPacket(fixedHeader.Flags, bodyReader, fixedHeader.TotalLength);
}
@@ -275,11 +288,110 @@ namespace MQTTnet.Adapter
}
}
async Task<ReadFixedHeaderResult> ReadFixedHeaderAsync(CancellationToken cancellationToken)
{
// The MQTT fixed header contains 1 byte of flags and at least 1 byte for the remaining data length.
// So in all cases at least 2 bytes must be read for a complete MQTT packet.
var buffer = _fixedHeaderBuffer;
var totalBytesRead = 0;
while (totalBytesRead < buffer.Length)
{
var bytesRead = await _channel.ReadAsync(buffer, totalBytesRead, buffer.Length - totalBytesRead, cancellationToken).ConfigureAwait(false);
if (cancellationToken.IsCancellationRequested)
{
return null;
}
if (bytesRead == 0)
{
return new ReadFixedHeaderResult
{
ConnectionClosed = true
};
}
totalBytesRead += bytesRead;
}
_packetInspectorHandler.FillReceiveBuffer(buffer);
var hasRemainingLength = buffer[1] != 0;
if (!hasRemainingLength)
{
return new ReadFixedHeaderResult
{
FixedHeader = new MqttFixedHeader(buffer[0], 0, totalBytesRead)
};
}
var bodyLength = await ReadBodyLengthAsync(buffer[1], cancellationToken).ConfigureAwait(false);
if (!bodyLength.HasValue)
{
return new ReadFixedHeaderResult
{
ConnectionClosed = true
};
}
totalBytesRead += bodyLength.Value;
return new ReadFixedHeaderResult
{
FixedHeader = new MqttFixedHeader(buffer[0], bodyLength.Value, totalBytesRead)
};
}
async Task<int?> ReadBodyLengthAsync(byte initialEncodedByte, CancellationToken cancellationToken)
{
var offset = 0;
var multiplier = 128;
var value = initialEncodedByte & 127;
int encodedByte = initialEncodedByte;
while ((encodedByte & 128) != 0)
{
offset++;
if (offset > 3)
{
throw new MqttProtocolViolationException("Remaining length is invalid.");
}
if (cancellationToken.IsCancellationRequested)
{
return null;
}
var readCount = await _channel.ReadAsync(_singleByteBuffer, 0, 1, cancellationToken).ConfigureAwait(false);
if (cancellationToken.IsCancellationRequested)
{
return null;
}
if (readCount == 0)
{
return null;
}
_packetInspectorHandler.FillReceiveBuffer(_singleByteBuffer);
encodedByte = _singleByteBuffer[0];
value += (encodedByte & 127) * multiplier;
multiplier *= 128;
}
return value;
}
static bool IsWrappedException(Exception exception)
{
return exception is OperationCanceledException ||
exception is MqttCommunicationTimedOutException ||
exception is MqttCommunicationException;
exception is MqttCommunicationException ||
exception is MqttProtocolViolationException;
}
static void WrapAndThrowException(Exception exception)
@@ -295,7 +407,7 @@ namespace MQTTnet.Adapter
{
throw new OperationCanceledException();
}
if (socketException.SocketErrorCode == SocketError.ConnectionAborted)
{
throw new MqttCommunicationException(socketException);
Source/MQTTnet/Adapter/MqttPacketInspectorHandler.cs
+84
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@@ -0,0 +1,84 @@
using System;
using System.IO;
using System.Linq;
using MQTTnet.Diagnostics;
using MQTTnet.Diagnostics.PacketInspection;
namespace MQTTnet.Adapter
{
public sealed class MqttPacketInspectorHandler
{
readonly MemoryStream _receivedPacketBuffer;
readonly IMqttPacketInspector _packetInspector;
readonly IMqttNetScopedLogger _logger;
public MqttPacketInspectorHandler(IMqttPacketInspector packetInspector, IMqttNetLogger logger)
{
_packetInspector = packetInspector;
if (packetInspector != null)
{
_receivedPacketBuffer = new MemoryStream();
}
if (logger == null) throw new ArgumentNullException(nameof(logger));
_logger = logger.CreateScopedLogger(nameof(MqttPacketInspectorHandler));
}
public void BeginReceivePacket()
{
_receivedPacketBuffer?.SetLength(0);
}
public void EndReceivePacket()
{
if (_packetInspector == null)
{
return;
}
var buffer = _receivedPacketBuffer.ToArray();
_receivedPacketBuffer.SetLength(0);
InspectPacket(buffer, MqttPacketFlowDirection.Inbound);
}
public void BeginSendPacket(ArraySegment<byte> buffer)
{
if (_packetInspector == null)
{
return;
}
// Create a copy of the actual packet so that the inspector gets no access
// to the internal buffers. This is waste of memory but this feature is only
// intended for debugging etc. so that this is OK.
var bufferCopy = buffer.ToArray();
InspectPacket(bufferCopy, MqttPacketFlowDirection.Outbound);
}
public void FillReceiveBuffer(byte[] buffer)
{
_receivedPacketBuffer?.Write(buffer, 0, buffer.Length);
}
void InspectPacket(byte[] buffer, MqttPacketFlowDirection direction)
{
try
{
var context = new ProcessMqttPacketContext
{
Buffer = buffer,
Direction = direction
};
_packetInspector.ProcessMqttPacket(context);
}
catch (Exception exception)
{
_logger.Error(exception, "Error while inspecting packet.");
}
}
}
}
Source/MQTTnet/Adapter/ReceivedMqttPacket.cs
+5 -4
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@@ -1,19 +1,20 @@
using MQTTnet.Formatter;
using System;
using MQTTnet.Formatter;
namespace MQTTnet.Adapter
{
public sealed class ReceivedMqttPacket
{
public ReceivedMqttPacket(byte fixedHeader, IMqttPacketBodyReader body, int totalLength)
public ReceivedMqttPacket(byte fixedHeader, IMqttPacketBodyReader bodyReader, int totalLength)
{
FixedHeader = fixedHeader;
Body = body;
BodyReader = bodyReader ?? throw new ArgumentNullException(nameof(bodyReader));
TotalLength = totalLength;
}
public byte FixedHeader { get; }
public IMqttPacketBodyReader Body { get; }
public IMqttPacketBodyReader BodyReader { get; }
public int TotalLength { get; }
}
Source/MQTTnet/Client/Options/IMqttClientOptions.cs
+3
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@@ -3,6 +3,7 @@ using MQTTnet.Formatter;
using MQTTnet.Packets;
using System;
using System.Collections.Generic;
using MQTTnet.Diagnostics.PacketInspection;
namespace MQTTnet.Client.Options
{
@@ -29,5 +30,7 @@ namespace MQTTnet.Client.Options
uint? SessionExpiryInterval { get; }
ushort? TopicAliasMaximum { get; }
List<MqttUserProperty> UserProperties { get; set; }
IMqttPacketInspector PacketInspector { get; set; }
}
}
Source/MQTTnet/Client/Options/MqttClientOptions.cs
+3
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@@ -3,6 +3,7 @@ using MQTTnet.Formatter;
using MQTTnet.Packets;
using System;
using System.Collections.Generic;
using MQTTnet.Diagnostics.PacketInspection;
namespace MQTTnet.Client.Options
{
@@ -31,5 +32,7 @@ namespace MQTTnet.Client.Options
public uint? SessionExpiryInterval { get; set; }
public ushort? TopicAliasMaximum { get; set; }
public List<MqttUserProperty> UserProperties { get; set; }
public IMqttPacketInspector PacketInspector { get; set; }
}
}
Source/MQTTnet/Client/Options/MqttClientOptionsBuilder.cs
+7
View File
@@ -5,6 +5,7 @@ using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MQTTnet.Diagnostics.PacketInspection;
namespace MQTTnet.Client.Options
{
@@ -256,6 +257,12 @@ namespace MQTTnet.Client.Options
return this;
}
public MqttClientOptionsBuilder WithPacketInspector(IMqttPacketInspector packetInspector)
{
_options.PacketInspector = packetInspector;
return this;
}
public IMqttClientOptions Build()
{
if (_tcpOptions == null && _webSocketOptions == null)
Source/MQTTnet/Diagnostics/PacketInspection/IMqttPacketInspector.cs
+7
View File
@@ -0,0 +1,7 @@
namespace MQTTnet.Diagnostics.PacketInspection
{
public interface IMqttPacketInspector
{
void ProcessMqttPacket(ProcessMqttPacketContext context);
}
}
Source/MQTTnet/Diagnostics/PacketInspection/MqttPacketFlowDirection.cs
+9
View File
@@ -0,0 +1,9 @@
namespace MQTTnet.Diagnostics.PacketInspection
{
public enum MqttPacketFlowDirection
{
Inbound,
Outbound
}
}
Source/MQTTnet/Diagnostics/PacketInspection/ProcessMqttPacketContext.cs
+9
View File
@@ -0,0 +1,9 @@
namespace MQTTnet.Diagnostics.PacketInspection
{
public sealed class ProcessMqttPacketContext
{
public MqttPacketFlowDirection Direction { get; set; }
public byte[] Buffer { get; set; }
}
}
Source/MQTTnet/Formatter/MqttPacketFormatterAdapter.cs
+9 -9
View File
@@ -11,7 +11,7 @@ namespace MQTTnet.Formatter
public sealed class MqttPacketFormatterAdapter
{
IMqttPacketFormatter _formatter;
public MqttPacketFormatterAdapter(MqttProtocolVersion protocolVersion)
: this(protocolVersion, new MqttPacketWriter())
{
@@ -26,7 +26,7 @@ namespace MQTTnet.Formatter
public MqttPacketFormatterAdapter(IMqttPacketWriter writer)
{
Writer = writer;
}
}
public MqttProtocolVersion ProtocolVersion { get; private set; } = MqttProtocolVersion.Unknown;
@@ -39,7 +39,7 @@ namespace MQTTnet.Formatter
return _formatter.DataConverter;
}
}
public IMqttPacketWriter Writer { get; }
public ArraySegment<byte> Encode(MqttBasePacket packet)
@@ -69,10 +69,10 @@ namespace MQTTnet.Formatter
{
var protocolVersion = ParseProtocolVersion(receivedMqttPacket);
// Reset the position of the stream because the protocol version is part of
// Reset the position of the stream because the protocol version is part of
// the regular CONNECT packet. So it will not properly deserialized if this
// data is missing.
receivedMqttPacket.Body.Seek(0);
receivedMqttPacket.BodyReader.Seek(0);
UseProtocolVersion(protocolVersion);
}
@@ -83,7 +83,7 @@ namespace MQTTnet.Formatter
{
throw new InvalidOperationException("MQTT protocol version is invalid.");
}
switch (protocolVersion)
{
case MqttProtocolVersion.V500:
@@ -120,7 +120,7 @@ namespace MQTTnet.Formatter
{
if (receivedMqttPacket == null) throw new ArgumentNullException(nameof(receivedMqttPacket));
if (receivedMqttPacket.Body.Length < 7)
if (receivedMqttPacket.BodyReader.Length < 7)
{
// 2 byte protocol name length
// at least 4 byte protocol name
@@ -128,8 +128,8 @@ namespace MQTTnet.Formatter
throw new MqttProtocolViolationException("CONNECT packet must have at least 7 bytes.");
}
var protocolName = receivedMqttPacket.Body.ReadStringWithLengthPrefix();
var protocolLevel = receivedMqttPacket.Body.ReadByte();
var protocolName = receivedMqttPacket.BodyReader.ReadStringWithLengthPrefix();
var protocolLevel = receivedMqttPacket.BodyReader.ReadByte();
if (protocolName == "MQTT")
{
Source/MQTTnet/Formatter/MqttPacketReader.cs
-114
View File
@@ -1,114 +0,0 @@
using System;
using System.Threading;
using System.Threading.Tasks;
using MQTTnet.Channel;
using MQTTnet.Exceptions;
namespace MQTTnet.Formatter
{
public sealed class MqttPacketReader
{
readonly byte[] _singleByteBuffer = new byte[1];
readonly IMqttChannel _channel;
public MqttPacketReader(IMqttChannel channel)
{
_channel = channel ?? throw new ArgumentNullException(nameof(channel));
}
public async Task<ReadFixedHeaderResult> ReadFixedHeaderAsync(byte[] fixedHeaderBuffer, CancellationToken cancellationToken)
{
// The MQTT fixed header contains 1 byte of flags and at least 1 byte for the remaining data length.
// So in all cases at least 2 bytes must be read for a complete MQTT packet.
var buffer = fixedHeaderBuffer;
var totalBytesRead = 0;
while (totalBytesRead < buffer.Length)
{
var bytesRead = await _channel.ReadAsync(buffer, totalBytesRead, buffer.Length - totalBytesRead, cancellationToken).ConfigureAwait(false);
if (cancellationToken.IsCancellationRequested)
{
return null;
}
if (bytesRead == 0)
{
return new ReadFixedHeaderResult
{
ConnectionClosed = true
};
}
totalBytesRead += bytesRead;
}
var hasRemainingLength = buffer[1] != 0;
if (!hasRemainingLength)
{
return new ReadFixedHeaderResult
{
FixedHeader = new MqttFixedHeader(buffer[0], 0, totalBytesRead)
};
}
var bodyLength = await ReadBodyLengthAsync(buffer[1], cancellationToken).ConfigureAwait(false);
if (!bodyLength.HasValue)
{
return new ReadFixedHeaderResult
{
ConnectionClosed = true
};
}
totalBytesRead += bodyLength.Value;
return new ReadFixedHeaderResult
{
FixedHeader = new MqttFixedHeader(buffer[0], bodyLength.Value, totalBytesRead)
};
}
async Task<int?> ReadBodyLengthAsync(byte initialEncodedByte, CancellationToken cancellationToken)
{
var offset = 0;
var multiplier = 128;
var value = initialEncodedByte & 127;
int encodedByte = initialEncodedByte;
while ((encodedByte & 128) != 0)
{
offset++;
if (offset > 3)
{
throw new MqttProtocolViolationException("Remaining length is invalid.");
}
if (cancellationToken.IsCancellationRequested)
{
return null;
}
var readCount = await _channel.ReadAsync(_singleByteBuffer, 0, 1, cancellationToken).ConfigureAwait(false);
if (cancellationToken.IsCancellationRequested)
{
return null;
}
if (readCount == 0)
{
return null;
}
encodedByte = _singleByteBuffer[0];
value += (encodedByte & 127) * multiplier;
multiplier *= 128;
}
return value;
}
}
}
Source/MQTTnet/Formatter/V3/MqttV310PacketFormatter.cs
+15 -15
View File
@@ -63,20 +63,20 @@ namespace MQTTnet.Formatter.V3
switch ((MqttControlPacketType)controlPacketType)
{
case MqttControlPacketType.Connect: return DecodeConnectPacket(receivedMqttPacket.Body);
case MqttControlPacketType.ConnAck: return DecodeConnAckPacket(receivedMqttPacket.Body);
case MqttControlPacketType.Connect: return DecodeConnectPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.ConnAck: return DecodeConnAckPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.Disconnect: return DisconnectPacket;
case MqttControlPacketType.Publish: return DecodePublishPacket(receivedMqttPacket);
case MqttControlPacketType.PubAck: return DecodePubAckPacket(receivedMqttPacket.Body);
case MqttControlPacketType.PubRec: return DecodePubRecPacket(receivedMqttPacket.Body);
case MqttControlPacketType.PubRel: return DecodePubRelPacket(receivedMqttPacket.Body);
case MqttControlPacketType.PubComp: return DecodePubCompPacket(receivedMqttPacket.Body);
case MqttControlPacketType.PubAck: return DecodePubAckPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.PubRec: return DecodePubRecPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.PubRel: return DecodePubRelPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.PubComp: return DecodePubCompPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.PingReq: return PingReqPacket;
case MqttControlPacketType.PingResp: return PingRespPacket;
case MqttControlPacketType.Subscribe: return DecodeSubscribePacket(receivedMqttPacket.Body);
case MqttControlPacketType.SubAck: return DecodeSubAckPacket(receivedMqttPacket.Body);
case MqttControlPacketType.Unsubscibe: return DecodeUnsubscribePacket(receivedMqttPacket.Body);
case MqttControlPacketType.UnsubAck: return DecodeUnsubAckPacket(receivedMqttPacket.Body);
case MqttControlPacketType.Subscribe: return DecodeSubscribePacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.SubAck: return DecodeSubAckPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.Unsubscibe: return DecodeUnsubscribePacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.UnsubAck: return DecodeUnsubAckPacket(receivedMqttPacket.BodyReader);
default: throw new MqttProtocolViolationException($"Packet type ({controlPacketType}) not supported.");
}
@@ -202,18 +202,18 @@ namespace MQTTnet.Formatter.V3
static MqttBasePacket DecodePublishPacket(ReceivedMqttPacket receivedMqttPacket)
{
ThrowIfBodyIsEmpty(receivedMqttPacket.Body);
ThrowIfBodyIsEmpty(receivedMqttPacket.BodyReader);
var retain = (receivedMqttPacket.FixedHeader & 0x1) > 0;
var qualityOfServiceLevel = (MqttQualityOfServiceLevel)(receivedMqttPacket.FixedHeader >> 1 & 0x3);
var dup = (receivedMqttPacket.FixedHeader & 0x8) > 0;
var topic = receivedMqttPacket.Body.ReadStringWithLengthPrefix();
var topic = receivedMqttPacket.BodyReader.ReadStringWithLengthPrefix();
ushort packetIdentifier = 0;
if (qualityOfServiceLevel > MqttQualityOfServiceLevel.AtMostOnce)
{
packetIdentifier = receivedMqttPacket.Body.ReadTwoByteInteger();
packetIdentifier = receivedMqttPacket.BodyReader.ReadTwoByteInteger();
}
var packet = new MqttPublishPacket
@@ -225,9 +225,9 @@ namespace MQTTnet.Formatter.V3
Dup = dup
};
if (!receivedMqttPacket.Body.EndOfStream)
if (!receivedMqttPacket.BodyReader.EndOfStream)
{
packet.Payload = receivedMqttPacket.Body.ReadRemainingData();
packet.Payload = receivedMqttPacket.BodyReader.ReadRemainingData();
}
return packet;
Source/MQTTnet/Formatter/V5/MqttV500PacketDecoder.cs
+13 -13
View File
@@ -25,21 +25,21 @@ namespace MQTTnet.Formatter.V5
switch ((MqttControlPacketType)controlPacketType)
{
case MqttControlPacketType.Connect: return DecodeConnectPacket(receivedMqttPacket.Body);
case MqttControlPacketType.ConnAck: return DecodeConnAckPacket(receivedMqttPacket.Body);
case MqttControlPacketType.Disconnect: return DecodeDisconnectPacket(receivedMqttPacket.Body);
case MqttControlPacketType.Publish: return DecodePublishPacket(receivedMqttPacket.FixedHeader, receivedMqttPacket.Body);
case MqttControlPacketType.PubAck: return DecodePubAckPacket(receivedMqttPacket.Body);
case MqttControlPacketType.PubRec: return DecodePubRecPacket(receivedMqttPacket.Body);
case MqttControlPacketType.PubRel: return DecodePubRelPacket(receivedMqttPacket.Body);
case MqttControlPacketType.PubComp: return DecodePubCompPacket(receivedMqttPacket.Body);
case MqttControlPacketType.Connect: return DecodeConnectPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.ConnAck: return DecodeConnAckPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.Disconnect: return DecodeDisconnectPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.Publish: return DecodePublishPacket(receivedMqttPacket.FixedHeader, receivedMqttPacket.BodyReader);
case MqttControlPacketType.PubAck: return DecodePubAckPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.PubRec: return DecodePubRecPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.PubRel: return DecodePubRelPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.PubComp: return DecodePubCompPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.PingReq: return DecodePingReqPacket();
case MqttControlPacketType.PingResp: return DecodePingRespPacket();
case MqttControlPacketType.Subscribe: return DecodeSubscribePacket(receivedMqttPacket.Body);
case MqttControlPacketType.SubAck: return DecodeSubAckPacket(receivedMqttPacket.Body);
case MqttControlPacketType.Unsubscibe: return DecodeUnsubscribePacket(receivedMqttPacket.Body);
case MqttControlPacketType.UnsubAck: return DecodeUnsubAckPacket(receivedMqttPacket.Body);
case MqttControlPacketType.Auth: return DecodeAuthPacket(receivedMqttPacket.Body);
case MqttControlPacketType.Subscribe: return DecodeSubscribePacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.SubAck: return DecodeSubAckPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.Unsubscibe: return DecodeUnsubscribePacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.UnsubAck: return DecodeUnsubAckPacket(receivedMqttPacket.BodyReader);
case MqttControlPacketType.Auth: return DecodeAuthPacket(receivedMqttPacket.BodyReader);
default: throw new MqttProtocolViolationException($"Packet type ({controlPacketType}) not supported.");
}
Source/MQTTnet/Implementations/MqttClientAdapterFactory.cs
+9 -2
View File
@@ -3,6 +3,7 @@ using MQTTnet.Client.Options;
using MQTTnet.Diagnostics;
using MQTTnet.Formatter;
using System;
using MQTTnet.Channel;
namespace MQTTnet.Implementations
{
@@ -19,16 +20,19 @@ namespace MQTTnet.Implementations
{
if (options == null) throw new ArgumentNullException(nameof(options));
IMqttChannel channel;
switch (options.ChannelOptions)
{
case MqttClientTcpOptions _:
{
return new MqttChannelAdapter(new MqttTcpChannel(options), new MqttPacketFormatterAdapter(options.ProtocolVersion, new MqttPacketWriter()), _logger);
channel = new MqttTcpChannel(options);
break;
}
case MqttClientWebSocketOptions webSocketOptions:
{
return new MqttChannelAdapter(new MqttWebSocketChannel(webSocketOptions), new MqttPacketFormatterAdapter(options.ProtocolVersion, new MqttPacketWriter()), _logger);
channel = new MqttWebSocketChannel(webSocketOptions);
break;
}
default:
@@ -36,6 +40,9 @@ namespace MQTTnet.Implementations
throw new NotSupportedException();
}
}
var packetFormatterAdapter = new MqttPacketFormatterAdapter(options.ProtocolVersion, new MqttPacketWriter());
return new MqttChannelAdapter(channel, packetFormatterAdapter, options.PacketInspector, _logger);
}
}
}
Source/MQTTnet/Implementations/MqttTcpChannel.cs
+2 -2
View File
@@ -77,7 +77,7 @@ namespace MQTTnet.Implementations
cancellationToken.ThrowIfCancellationRequested();
var networkStream = socket.GetStream();
if (_tcpOptions.TlsOptions?.UseTls == true)
{
var sslStream = new SslStream(networkStream, false, InternalUserCertificateValidationCallback);
@@ -94,7 +94,7 @@ namespace MQTTnet.Implementations
};
await sslStream.AuthenticateAsClientAsync(sslOptions, cancellationToken).ConfigureAwait(false);
#else
#else
await sslStream.AuthenticateAsClientAsync(_tcpOptions.Server, LoadCertificates(), _tcpOptions.TlsOptions.SslProtocol, !_tcpOptions.TlsOptions.IgnoreCertificateRevocationErrors).ConfigureAwait(false);
#endif
}
Source/MQTTnet/Implementations/MqttTcpServerAdapter.Uwp.cs
+1 -1
View File
@@ -89,7 +89,7 @@ namespace MQTTnet.Implementations
}
}
using (var clientAdapter = new MqttChannelAdapter(new MqttTcpChannel(args.Socket, clientCertificate, _options), new MqttPacketFormatterAdapter(new MqttPacketWriter()), _rootLogger))
using (var clientAdapter = new MqttChannelAdapter(new MqttTcpChannel(args.Socket, clientCertificate, _options), new MqttPacketFormatterAdapter(new MqttPacketWriter()), null, _rootLogger))
{
await clientHandler(clientAdapter).ConfigureAwait(false);
}
Source/MQTTnet/Implementations/MqttTcpServerListener.cs
+5 -1
View File
@@ -178,7 +178,11 @@ namespace MQTTnet.Implementations
var clientHandler = ClientHandler;
if (clientHandler != null)
{
using (var clientAdapter = new MqttChannelAdapter(new MqttTcpChannel(stream, remoteEndPoint, clientCertificate), new MqttPacketFormatterAdapter(new MqttPacketWriter()), _rootLogger))
using (var clientAdapter = new MqttChannelAdapter(
new MqttTcpChannel(stream, remoteEndPoint, clientCertificate),
new MqttPacketFormatterAdapter(new MqttPacketWriter()),
null,
_rootLogger))
{
await clientHandler(clientAdapter).ConfigureAwait(false);
}
Source/MQTTnet/Internal/TestMqttChannel.cs
+6 -1
View File
@@ -6,7 +6,7 @@ using MQTTnet.Channel;
namespace MQTTnet.Internal
{
public class TestMqttChannel : IMqttChannel
public sealed class TestMqttChannel : IMqttChannel
{
readonly MemoryStream _stream;
@@ -15,6 +15,11 @@ namespace MQTTnet.Internal
_stream = stream;
}
public TestMqttChannel(byte[] buffer)
{
_stream = new MemoryStream(buffer);
}
public string Endpoint { get; } = "<Test channel>";
public bool IsSecureConnection { get; } = false;
Source/MQTTnet/MqttTopicFilterBuilder.cs
+29 -1
View File
@@ -13,6 +13,9 @@ namespace MQTTnet
{
MqttQualityOfServiceLevel _qualityOfServiceLevel = MqttQualityOfServiceLevel.AtMostOnce;
string _topic;
bool? _noLocal;
bool? _retainAsPublished;
MqttRetainHandling? _retainHandling;
public MqttTopicFilterBuilder WithTopic(string topic)
{
@@ -44,6 +47,24 @@ namespace MQTTnet
return this;
}
public MqttTopicFilterBuilder WithNoLocal(bool? value = true)
{
_noLocal = value;
return this;
}
public MqttTopicFilterBuilder WithRetainAsPublished(bool? value = true)
{
_retainAsPublished = value;
return this;
}
public MqttTopicFilterBuilder WithRetainHandling(MqttRetainHandling? value)
{
_retainHandling = value;
return this;
}
public MqttTopicFilter Build()
{
if (string.IsNullOrEmpty(_topic))
@@ -51,7 +72,14 @@ namespace MQTTnet
throw new MqttProtocolViolationException("Topic is not set.");
}
return new MqttTopicFilter { Topic = _topic, QualityOfServiceLevel = _qualityOfServiceLevel };
return new MqttTopicFilter
{
Topic = _topic,
QualityOfServiceLevel = _qualityOfServiceLevel,
NoLocal = _noLocal,
RetainAsPublished = _retainAsPublished,
RetainHandling = _retainHandling
};
}
}
}
Tests/MQTTnet.Benchmarks/ChannelAdapterBenchmark.cs
+1 -1
View File
@@ -43,7 +43,7 @@ namespace MQTTnet.Benchmarks
var channel = new TestMqttChannel(_stream);
_channelAdapter = new MqttChannelAdapter(channel, serializer, new MqttNetLogger());
_channelAdapter = new MqttChannelAdapter(channel, serializer, null, new MqttNetLogger());
}
[Benchmark]
Tests/MQTTnet.Benchmarks/SerializerBenchmark.cs
+3 -8
View File
@@ -9,6 +9,7 @@ using MQTTnet.Channel;
using MQTTnet.Formatter;
using MQTTnet.Formatter.V3;
using BenchmarkDotNet.Jobs;
using MQTTnet.Diagnostics;
namespace MQTTnet.Benchmarks
{
@@ -48,19 +49,13 @@ namespace MQTTnet.Benchmarks
{
var channel = new BenchmarkMqttChannel(_serializedPacket);
var fixedHeader = new byte[2];
var reader = new MqttPacketReader(channel);
var reader = new MqttChannelAdapter(channel, new MqttPacketFormatterAdapter(new MqttPacketWriter()), null, new MqttNetLogger());
for (var i = 0; i < 10000; i++)
{
channel.Reset();
var header = reader.ReadFixedHeaderAsync(fixedHeader, CancellationToken.None).GetAwaiter().GetResult().FixedHeader;
var receivedPacket = new ReceivedMqttPacket(
header.Flags,
new MqttPacketBodyReader(_serializedPacket.Array, _serializedPacket.Count - header.RemainingLength, _serializedPacket.Array.Length), 0);
_serializer.Decode(receivedPacket);
var header = reader.ReceivePacketAsync(CancellationToken.None).GetAwaiter().GetResult();
}
}
Tests/MQTTnet.Core.Tests/MqttPacketReader_Tests.cs
+22 -21
View File
@@ -1,23 +1,24 @@
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using MQTTnet.Formatter;
using MQTTnet.Internal;
//using System.IO;
//using System.Threading;
//using System.Threading.Tasks;
//using Microsoft.VisualStudio.TestTools.UnitTesting;
//using MQTTnet.Formatter;
//using MQTTnet.Internal;
namespace MQTTnet.Tests
{
[TestClass]
public class MqttPacketReader_Tests
{
[TestMethod]
public async Task MqttPacketReader_EmptyStream()
{
var fixedHeader = new byte[2];
var reader = new MqttPacketReader(new TestMqttChannel(new MemoryStream()));
var readResult = await reader.ReadFixedHeaderAsync(fixedHeader, CancellationToken.None);
//namespace MQTTnet.Tests
//{
// [TestClass]
// public class MqttPacketReader_Tests
// {
// [TestMethod]
// public async Task MqttPacketReader_EmptyStream()
// {
// var fixedHeader = new byte[2];
// var reader = new MqttPacketReader(new TestMqttChannel(new MemoryStream()));
// var readResult = await reader.ReadFixedHeaderAsync(fixedHeader, CancellationToken.None);
Assert.IsTrue(readResult.ConnectionClosed);
}
}
}
// Assert.IsTrue(readResult.ConnectionClosed);
// }
// }
//}
// TODO: Fix
Tests/MQTTnet.Core.Tests/MqttPacketSerializer_Tests.cs
+98 -76
View File
@@ -6,6 +6,7 @@ using System.Text;
using System.Threading;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using MQTTnet.Adapter;
using MQTTnet.Diagnostics;
using MQTTnet.Exceptions;
using MQTTnet.Formatter;
using MQTTnet.Formatter.V3;
@@ -22,7 +23,7 @@ namespace MQTTnet.Tests
[TestMethod]
public void DetectVersionFromMqttConnectPacket()
{
var p = new MqttConnectPacket
var packet = new MqttConnectPacket
{
ClientId = "XYZ",
Password = Encoding.UTF8.GetBytes("PASS"),
@@ -30,17 +31,26 @@ namespace MQTTnet.Tests
KeepAlivePeriod = 123,
CleanSession = true
};
var adapter = new MqttPacketFormatterAdapter(WriterFactory());
Assert.AreEqual(MqttProtocolVersion.V310, DeserializeAndDetectVersion(adapter, Serialize(p, MqttProtocolVersion.V310)));
Assert.AreEqual(MqttProtocolVersion.V311, DeserializeAndDetectVersion(adapter, Serialize(p, MqttProtocolVersion.V311)));
Assert.AreEqual(MqttProtocolVersion.V500, DeserializeAndDetectVersion(adapter, Serialize(p, MqttProtocolVersion.V500)));
Assert.AreEqual(
MqttProtocolVersion.V310,
DeserializeAndDetectVersion(new MqttPacketFormatterAdapter(new MqttPacketWriter()), Serialize(packet, MqttProtocolVersion.V310)));
Assert.AreEqual(
MqttProtocolVersion.V311,
DeserializeAndDetectVersion(new MqttPacketFormatterAdapter(new MqttPacketWriter()), Serialize(packet, MqttProtocolVersion.V311)));
Assert.AreEqual(
MqttProtocolVersion.V500,
DeserializeAndDetectVersion(new MqttPacketFormatterAdapter(new MqttPacketWriter()), Serialize(packet, MqttProtocolVersion.V500)));
var adapter = new MqttPacketFormatterAdapter(new MqttPacketWriter());
var ex = Assert.ThrowsException<MqttProtocolViolationException>(() => DeserializeAndDetectVersion(adapter, WriterFactory().AddMqttHeader(MqttControlPacketType.Connect, new byte[0])));
Assert.AreEqual("CONNECT packet must have at least 7 bytes.", ex.Message);
ex = Assert.ThrowsException<MqttProtocolViolationException>(() => DeserializeAndDetectVersion(adapter, WriterFactory().AddMqttHeader(MqttControlPacketType.Connect, new byte[7])));
Assert.AreEqual("Protocol '' not supported.", ex.Message);
ex = Assert.ThrowsException<MqttProtocolViolationException>(() => DeserializeAndDetectVersion(adapter, WriterFactory().AddMqttHeader(MqttControlPacketType.Connect, new byte[] { 255, 255, 0,0,0,0,0 })));
ex = Assert.ThrowsException<MqttProtocolViolationException>(() => DeserializeAndDetectVersion(adapter, WriterFactory().AddMqttHeader(MqttControlPacketType.Connect, new byte[] { 255, 255, 0, 0, 0, 0, 0 })));
Assert.AreEqual("Expected at least 65537 bytes but there are only 7 bytes", ex.Message);
}
@@ -205,24 +215,28 @@ namespace MQTTnet.Tests
Payload = payload
};
var buffer = serializer.Encode(publishPacket);
var testChannel = new TestMqttChannel(new MemoryStream(buffer.Array, buffer.Offset, buffer.Count));
var header = new MqttPacketReader(testChannel).ReadFixedHeaderAsync(
new byte[2],
CancellationToken.None).GetAwaiter().GetResult().FixedHeader;
var publishPacketCopy = Roundtrip(publishPacket);
var eof = buffer.Offset + buffer.Count;
//var buffer = serializer.Encode(publishPacket);
//var testChannel = new TestMqttChannel(new MemoryStream(buffer.Array, buffer.Offset, buffer.Count));
var receivedPacket = new ReceivedMqttPacket(
header.Flags,
new MqttPacketBodyReader(buffer.Array, eof - header.RemainingLength, buffer.Count + buffer.Offset),
0);
var packet = (MqttPublishPacket)serializer.Decode(receivedPacket);
//var header = new MqttPacketReader(testChannel).ReadFixedHeaderAsync(
// new byte[2],
// CancellationToken.None).GetAwaiter().GetResult().FixedHeader;
Assert.AreEqual(publishPacket.Topic, packet.Topic);
Assert.IsTrue(publishPacket.Payload.SequenceEqual(packet.Payload));
//var eof = buffer.Offset + buffer.Count;
//var receivedPacket = new ReceivedMqttPacket(
// header.Flags,
// new MqttPacketBodyReader(buffer.Array, eof - header.RemainingLength, buffer.Count + buffer.Offset),
// 0);
//var packet = (MqttPublishPacket)serializer.Decode(receivedPacket);
Assert.AreEqual(publishPacket.Topic, publishPacketCopy.Topic);
Assert.IsTrue(publishPacket.Payload.SequenceEqual(publishPacketCopy.Payload));
}
[TestMethod]
@@ -262,7 +276,7 @@ namespace MQTTnet.Tests
[TestMethod]
public void SerializeV500_MqttPublishPacket()
{
var prop = new MqttPublishPacketProperties {UserProperties = new List<MqttUserProperty>()};
var prop = new MqttPublishPacketProperties { UserProperties = new List<MqttUserProperty>() };
prop.ResponseTopic = "/Response";
@@ -581,15 +595,14 @@ namespace MQTTnet.Tests
DeserializeAndCompare(p, "sAIAew==");
}
private void SerializeAndCompare(MqttBasePacket packet, string expectedBase64Value, MqttProtocolVersion protocolVersion = MqttProtocolVersion.V311)
void SerializeAndCompare(MqttBasePacket packet, string expectedBase64Value, MqttProtocolVersion protocolVersion = MqttProtocolVersion.V311)
{
Assert.AreEqual(expectedBase64Value, Convert.ToBase64String(Serialize(packet, protocolVersion)));
}
private byte[] Serialize(MqttBasePacket packet, MqttProtocolVersion protocolVersion = MqttProtocolVersion.V311)
byte[] Serialize(MqttBasePacket packet, MqttProtocolVersion protocolVersion)
{
var serializer = MqttPacketFormatterAdapter.GetMqttPacketFormatter(protocolVersion, WriterFactory());
return Join(serializer.Encode(packet));
return MqttPacketFormatterAdapter.GetMqttPacketFormatter(protocolVersion, WriterFactory()).Encode(packet).ToArray();
}
protected virtual IMqttPacketWriter WriterFactory()
@@ -602,83 +615,92 @@ namespace MQTTnet.Tests
return new MqttPacketBodyReader(data, 0, data.Length);
}
private void DeserializeAndCompare(MqttBasePacket packet, string expectedBase64Value, MqttProtocolVersion protocolVersion = MqttProtocolVersion.V311)
void DeserializeAndCompare(MqttBasePacket packet, string expectedBase64Value, MqttProtocolVersion protocolVersion = MqttProtocolVersion.V311)
{
var writer = WriterFactory();
var serializer = MqttPacketFormatterAdapter.GetMqttPacketFormatter(protocolVersion, writer);
var buffer1 = serializer.Encode(packet);
using (var headerStream = new MemoryStream(Join(buffer1)))
using (var headerStream = new MemoryStream(buffer1.ToArray()))
{
var channel = new TestMqttChannel(headerStream);
var fixedHeader = new byte[2];
var header = new MqttPacketReader(channel).ReadFixedHeaderAsync(fixedHeader, CancellationToken.None).GetAwaiter().GetResult().FixedHeader;
var adapter = new MqttChannelAdapter(channel, new MqttPacketFormatterAdapter(protocolVersion, writer), null, new MqttNetLogger());
var receivedPacket = adapter.ReceivePacketAsync(CancellationToken.None).GetAwaiter().GetResult();
using (var bodyStream = new MemoryStream(Join(buffer1), (int)headerStream.Position, header.RemainingLength))
{
var reader = ReaderFactory(bodyStream.ToArray());
var deserializedPacket = serializer.Decode(new ReceivedMqttPacket(header.Flags, reader, 0));
var buffer2 = serializer.Encode(deserializedPacket);
var buffer2 = serializer.Encode(receivedPacket);
Assert.AreEqual(expectedBase64Value, Convert.ToBase64String(Join(buffer2)));
}
Assert.AreEqual(expectedBase64Value, Convert.ToBase64String(buffer2.ToArray()));
//adapter.ReceivePacketAsync(CancellationToken.None);
//var fixedHeader = new byte[2];
//var header = new MqttPacketReader(channel).ReadFixedHeaderAsync(fixedHeader, CancellationToken.None).GetAwaiter().GetResult().FixedHeader;
//using (var bodyStream = new MemoryStream(Join(buffer1), (int)headerStream.Position, header.RemainingLength))
//{
// var reader = ReaderFactory(bodyStream.ToArray());
// var deserializedPacket = serializer.Decode(new ReceivedMqttPacket(header.Flags, reader, 0));
// var buffer2 = serializer.Encode(deserializedPacket);
// Assert.AreEqual(expectedBase64Value, Convert.ToBase64String(Join(buffer2)));
//}
}
}
private T Roundtrip<T>(T packet, MqttProtocolVersion protocolVersion = MqttProtocolVersion.V311)
where T : MqttBasePacket
TPacket Roundtrip<TPacket>(TPacket packet, MqttProtocolVersion protocolVersion = MqttProtocolVersion.V311)
where TPacket : MqttBasePacket
{
var writer = WriterFactory();
var serializer = MqttPacketFormatterAdapter.GetMqttPacketFormatter(protocolVersion, writer);
var buffer = serializer.Encode(packet);
var buffer1 = serializer.Encode(packet);
var channel = new TestMqttChannel(buffer.ToArray());
var adapter = new MqttChannelAdapter(channel, new MqttPacketFormatterAdapter(protocolVersion, writer), null, new MqttNetLogger());
return (TPacket)adapter.ReceivePacketAsync(CancellationToken.None).GetAwaiter().GetResult();
using (var headerStream = new MemoryStream(Join(buffer1)))
{
var channel = new TestMqttChannel(headerStream);
var fixedHeader = new byte[2];
//using (var headerStream = new MemoryStream(buffer1.ToArray()))
//{
var header = new MqttPacketReader(channel).ReadFixedHeaderAsync(fixedHeader, CancellationToken.None).GetAwaiter().GetResult().FixedHeader;
using (var bodyStream = new MemoryStream(Join(buffer1), (int)headerStream.Position, (int)header.RemainingLength))
{
var reader = ReaderFactory(bodyStream.ToArray());
return (T)serializer.Decode(new ReceivedMqttPacket(header.Flags, reader, 0));
}
}
// //var fixedHeader = new byte[2];
// //var header = new MqttPacketReader(channel).ReadFixedHeaderAsync(fixedHeader, CancellationToken.None).GetAwaiter().GetResult().FixedHeader;
// //using (var bodyStream = new MemoryStream(Join(buffer1), (int)headerStream.Position, (int)header.RemainingLength))
// //{
// // var reader = ReaderFactory(bodyStream.ToArray());
// // return (T)serializer.Decode(new ReceivedMqttPacket(header.Flags, reader, 0));
// //}
//}
}
private MqttProtocolVersion DeserializeAndDetectVersion(MqttPacketFormatterAdapter adapter, byte[] buffer)
MqttProtocolVersion DeserializeAndDetectVersion(MqttPacketFormatterAdapter packetFormatterAdapter, byte[] buffer)
{
using (var headerStream = new MemoryStream(buffer))
{
var channel = new TestMqttChannel(headerStream);
var fixedHeader = new byte[2];
var channel = new TestMqttChannel(buffer);
var adapter = new MqttChannelAdapter(channel, packetFormatterAdapter, null, new MqttNetLogger());
var header = new MqttPacketReader(channel).ReadFixedHeaderAsync(fixedHeader, CancellationToken.None).GetAwaiter().GetResult().FixedHeader;
adapter.ReceivePacketAsync(CancellationToken.None).GetAwaiter().GetResult();
return packetFormatterAdapter.ProtocolVersion;
using (var bodyStream = new MemoryStream(buffer, (int)headerStream.Position, (int)header.RemainingLength))
{
var reader = ReaderFactory(bodyStream.ToArray());
var packet = new ReceivedMqttPacket(header.Flags, reader, 0);
adapter.DetectProtocolVersion(packet);
return adapter.ProtocolVersion;
}
}
}
//using (var headerStream = new MemoryStream(buffer))
//{
private static byte[] Join(params ArraySegment<byte>[] chunks)
{
var buffer = new MemoryStream();
foreach (var chunk in chunks)
{
buffer.Write(chunk.Array, chunk.Offset, chunk.Count);
}
return buffer.ToArray();
// //var fixedHeader = new byte[2];
// //var header = new MqttPacketReader(channel).ReadFixedHeaderAsync(fixedHeader, CancellationToken.None).GetAwaiter().GetResult().FixedHeader;
// //using (var bodyStream = new MemoryStream(buffer, (int)headerStream.Position, (int)header.RemainingLength))
// //{
// // var reader = ReaderFactory(bodyStream.ToArray());
// // var packet = new ReceivedMqttPacket(header.Flags, reader, 0);
// // packetFormatterAdapter.DetectProtocolVersion(packet);
// // return adapter.ProtocolVersion;
// //}
//}
}
}
}