public static ByteBuffer Encode(FrameType type, ushort channel, DescribedList command)
{
ByteBuffer buffer = new ByteBuffer(cmdBufferSize, true);
EncodeFrame(buffer, type, channel, command);
AmqpBitConverter.WriteInt(buffer.Buffer, 0, buffer.Length);
return buffer;
}
public static void Encode(ByteBuffer buffer, FrameType type, ushort channel, DescribedList command)
{
buffer.Append(FixedWidth.UInt);
AmqpBitConverter.WriteUByte(buffer, DOF);
AmqpBitConverter.WriteUByte(buffer, (byte)type);
AmqpBitConverter.WriteUShort(buffer, channel);
Codec.Encode(command, buffer);
AmqpBitConverter.WriteInt(buffer.Buffer, buffer.Offset, buffer.Length);
}
protected override DescribedList OnCommand(DescribedList command)
{
if (command.Descriptor.Code == Codec.SaslInit.Code)
{
SaslInit init = (SaslInit)command;
SaslCode code = this.ValidateCredentials(init);
return new SaslOutcome() { Code = code };
}
throw new AmqpException(ErrorCode.NotAllowed, command.ToString());
}
protected override DescribedList OnCommand(DescribedList command)
{
if (command.Descriptor.Code == Codec.SaslInit.Code)
{
return new SaslOutcome() { Code = SaslCode.Ok };
}
else if (command.Descriptor.Code == Codec.SaslMechanisms.Code)
{
return null;
}
throw new AmqpException(ErrorCode.NotAllowed, command.ToString());
}
public static void GetFrame(ByteBuffer buffer, out ushort channel, out DescribedList command)
{
AmqpBitConverter.ReadUInt(buffer);
AmqpBitConverter.ReadUByte(buffer);
AmqpBitConverter.ReadUByte(buffer);
channel = AmqpBitConverter.ReadUShort(buffer);
if (buffer.Length > 0)
{
command = (DescribedList)Codec.Decode(buffer);
}
else
{
command = null;
}
}
void SendCommand(ITransport transport, DescribedList command)
{
ByteBuffer buffer = new ByteBuffer(Frame.CmdBufferSize, true);
Frame.Encode(buffer, FrameType.Sasl, 0, command);
transport.Send(buffer);
Trace.WriteLine(TraceLevel.Frame, "SEND {0}", command);
}
/// <summary> /// Processes the received command and returns a response. If returns /// null, the SASL handshake completes. /// </summary> /// <param name="command"></param> /// <returns></returns> protected abstract DescribedList OnCommand(DescribedList command);
internal DescribedList OnCommandInternal(DescribedList command)
{
return this.OnCommand(command);
}
void OnSessionCommand(ushort remoteChannel, DescribedList command, ByteBuffer buffer)
{
this.GetSession(this.remoteSessions, remoteChannel).OnCommand(command, buffer);
}
internal void SendCommand(ushort channel, DescribedList command)
{
this.ThrowIfClosed("Send");
ByteBuffer buffer = this.AllocateBuffer(Frame.CmdBufferSize);
Frame.Encode(buffer, FrameType.Amqp, channel, command);
this.transport.Send(buffer);
Trace.WriteLine(TraceLevel.Frame, "SEND (ch={0}) {1}", channel, command);
}
internal void SendCommand(DescribedList command)
{
this.connection.SendCommand(this.channel, command);
}
internal void OnCommand(DescribedList command, ByteBuffer buffer)
{
Fx.Assert(this.state < State.EndReceived, "Session is ending or ended and cannot receive commands.");
if (command.Descriptor.Code == Codec.Attach.Code)
{
this.OnAttach((Attach)command);
}
else if (command.Descriptor.Code == Codec.Detach.Code)
{
this.OnDetach((Detach)command);
}
else if (command.Descriptor.Code == Codec.Flow.Code)
{
this.OnFlow((Flow)command);
}
else if (command.Descriptor.Code == Codec.Transfer.Code)
{
this.OnTransfer((Transfer)command, buffer);
}
else if (command.Descriptor.Code == Codec.Dispose.Code)
{
this.OnDispose((Dispose)command);
}
else
{
throw new AmqpException(ErrorCode.NotImplemented,
Fx.Format(SRAmqp.AmqpOperationNotSupported, command.Descriptor.Name));
}
}
static void EncodeFrame(ByteBuffer buffer, FrameType type, ushort channel, DescribedList command)
{
AmqpBitConverter.WriteUInt(buffer, 0u);
AmqpBitConverter.WriteUByte(buffer, DOF);
AmqpBitConverter.WriteUByte(buffer, (byte)type);
AmqpBitConverter.WriteUShort(buffer, channel);
Codec.Encode(command, buffer);
}
protected override DescribedList OnCommand(DescribedList command)
{
if (this.innerProfile == null)
{
if (command.Descriptor.Code == Codec.SaslInit.Code)
{
var init = (SaslInit)command;
SaslMechanism saslMechanism;
if (!this.listener.saslSettings.TryGetMechanism(init.Mechanism, out saslMechanism))
{
throw new AmqpException(ErrorCode.NotImplemented, init.Mechanism);
}
this.innerProfile = saslMechanism.CreateProfile();
}
else
{
throw new AmqpException(ErrorCode.NotAllowed, command.Descriptor.Name);
}
}
return this.innerProfile.OnCommandInternal(command);
}
protected override DescribedList OnCommand(DescribedList command)
{
return null;
}
internal void SendCommand(DescribedList command)
{
if (command.Descriptor.Code == Codec.End.Code || this.state < State.EndSent)
{
this.connection.SendCommand(this.channel, command);
}
}