public void Decode(IByteBuffer buffer, FixedHeader fixedHeader)
{
int remainingLength = fixedHeader.RemaingLength;
// 协议名 Protocol Name
// 协议级别 Protocol Level
ProtocolName = buffer.ReadString(ref remainingLength);
ProtocolLevel = buffer.ReadByte();
// 连接标志 Connect Flags
int connectFlags = buffer.ReadByte();
CleanSession = (connectFlags & 0x02) == 0x02;
WillFlag = (connectFlags & 0x04) == 0x04;
if (WillFlag)
{
WillQos = (MqttQos)((connectFlags & 0x18) >> 3);
WillRetain = (connectFlags & 0x20) == 0x20;
}
UsernameFlag = (connectFlags & 0x80) == 0x80;
PasswordFlag = (connectFlags & 0x40) == 0x40;
// 保持连接 Keep Alive
KeepAlive = (ushort)buffer.ReadShort();
}
public override void Encode(IByteBuffer buffer)
{
var buf = Unpooled.Buffer();
try
{
if (SessionPresent)
{
buf.WriteByte(1); // 7 reserved 0-bits and SP = 1
}
else
{
buf.WriteByte(0); // 7 reserved 0-bits and SP = 0
}
buf.WriteByte((byte)ConnectReturnCode);
FixedHeader.RemaingLength = buf.ReadableBytes;
FixedHeader.WriteTo(buffer);
buffer.WriteBytes(buf);
buf = null;
}
finally
{
buf?.SafeRelease();
}
}
public void Decode(IByteBuffer buffer, FixedHeader fixedHeader)
{
int remainingLength = fixedHeader.RemaingLength;
PacketIdentifier = buffer.ReadUnsignedShort(ref remainingLength);
if (PacketIdentifier == 0)
{
throw new DecoderException("[MQTT-2.3.1-1]");
}
}
/// <summary>
/// 解码
/// </summary>
/// <param name="buffer"></param>
/// <param name="fixedHeader"></param>
/// <param name="variableHeader"></param>
public void Decode(IByteBuffer buffer, FixedHeader fixedHeader, ConnectVariableHeader variableHeader)
{
int remainingLength = fixedHeader.RemaingLength;
ClientId = buffer.ReadString(ref remainingLength);
if (variableHeader.WillFlag)
{
WillTopic = buffer.ReadString(ref remainingLength);
//WillMessage = buffer.ReadBytes(3);
}
}
public override void Encode(IByteBuffer buffer)
{
var buf = Unpooled.Buffer();
try
{
VariableHeader.Encode(buf, FixedHeader);
Payload.Encode(buf);
FixedHeader.Encode(buffer, buf.ReadableBytes);
buffer.WriteBytes(buf);
}
finally
{
buf?.Release();
}
}
/// <summary>
/// EncodePacketIdVariableHeader
/// </summary>
/// <param name="buffer"></param>
public override void Encode(IByteBuffer buffer)
{
var buf = Unpooled.Buffer();
try
{
WritePacketId(buf);
FixedHeader.RemaingLength = buf.ReadableBytes;
FixedHeader.WriteFixedHeader(buffer);
buffer.WriteBytes(buf);
buf = null;
}
finally
{
buf?.Release();
}
}
public override void Encode(IByteBuffer buffer)
{
var buf = Unpooled.Buffer();
try
{
//variable header
buf.WriteString(ProtocolName); //byte 1 - 8
buf.WriteByte(ProtocolLevel); //byte 9
//connect flags; //byte 10
var flags = UsernameFlag.ToByte() << 7;
flags |= PasswordFlag.ToByte() << 6;
flags |= WillRetain.ToByte() << 5;
flags |= ((byte)WillQos) << 3;
flags |= WillFlag.ToByte() << 2;
flags |= CleanSession.ToByte() << 1;
buf.WriteByte((byte)flags);
//keep alive
buf.WriteShort(KeepAlive); //byte 11 - 12
//payload
buf.WriteString(ClientId);
if (WillFlag)
{
buf.WriteString(WillTopic);
buf.WriteBytes(WillMessage);
}
if (UsernameFlag && PasswordFlag)
{
buf.WriteString(UserName);
buf.WriteString(Password);
}
FixedHeader.RemaingLength = buf.ReadableBytes;
FixedHeader.WriteTo(buffer);
buffer.WriteBytes(buf);
buf = null;
}
finally
{
buf?.SafeRelease();
}
}
public override void Encode(IByteBuffer buffer)
{
var buf = Unpooled.Buffer();
try
{
buf.WriteString(TopicName);
EncodePacketId(buf);
buf.WriteBytes(Payload, 0, Payload.Length);
FixedHeader.RemaingLength = buf.ReadableBytes;
FixedHeader.WriteTo(buffer);
buffer.WriteBytes(buf);
}
finally
{
buf?.Release();
}
}
/// <summary>
/// 编码
/// </summary>
/// <param name="buffer"></param>
public override void Encode(IByteBuffer buffer)
{
var buf = Unpooled.Buffer();
try
{
buf.WriteString(TopicName);
if (Qos > MqttQos.AtMostOnce)
{
buf.WriteUnsignedShort(PacketIdentifier);
}
buf.WriteBytes(Payload, 0, Payload.Length);
FixedHeader.Encode(buffer, buf.ReadableBytes);
buffer.WriteBytes(buf);
}
finally
{
buf?.Release();
}
}
public override void Encode(IByteBuffer buffer)
{
var buf = Unpooled.Buffer();
try
{
buf.WriteShort(PacketId);
foreach (var item in _topics)
{
buf.WriteString(item);
}
FixedHeader.RemaingLength = buf.ReadableBytes;
FixedHeader.WriteTo(buffer);
buffer.WriteBytes(buf);
}
finally
{
buf?.Release();
}
}
public override void Encode(IByteBuffer buffer)
{
var buf = Unpooled.Buffer();
try
{
buf.WriteUnsignedShort(PacketId);
foreach (var item in _subscribeTopics)
{
buf.WriteString(item.Topic);
buf.WriteByte((byte)item.Qos);
}
FixedHeader.RemaingLength = buf.ReadableBytes;
FixedHeader.WriteFixedHeader(buffer);
buffer.WriteBytes(buf);
}
finally
{
buf?.Release();
}
}
/// <summary>
/// 编码
/// </summary>
/// <param name="buffer"></param>
public override void Encode(IByteBuffer buffer)
{
FixedHeader.Encode(buffer, 2);
VariableHeader.Encode(buffer);
}
public void Encode(IByteBuffer buffer, FixedHeader fixedHeader)
{
buffer.WriteUnsignedShort(PacketIdentifier);
}
