void SendHeader()
{
byte[] header = new byte[] { (byte)'A', (byte)'M', (byte)'Q', (byte)'P', 0, 1, 0, 0 };
this.writer.Send(new ByteBuffer(header, 0, header.Length, header.Length));
Trace.WriteLine(TraceLevel.Frame, "SEND AMQP 0 1.0.0");
Trace.WriteBuffer("SEND {0}", header, 0, header.Length);
}
public async Task PumpAsync(uint maxFrameSize, Func <ProtocolHeader, bool> onHeader, Func <ByteBuffer, bool> onBuffer)
{
byte[] header = new byte[FixedWidth.ULong];
if (onHeader != null)
{
// header
await this.ReceiveBufferAsync(header, 0, FixedWidth.ULong).ConfigureAwait(false);
Trace.WriteBuffer("RECV {0}", header, 0, header.Length);
if (!onHeader(ProtocolHeader.Create(header, 0)))
{
return;
}
}
// frames
while (true)
{
await this.ReceiveBufferAsync(header, 0, FixedWidth.UInt).ConfigureAwait(false);
int frameSize = AmqpBitConverter.ReadInt(header, 0);
if ((uint)frameSize > maxFrameSize)
{
throw new AmqpException(ErrorCode.InvalidField,
Fx.Format(SRAmqp.InvalidFrameSize, frameSize, maxFrameSize));
}
ByteBuffer buffer = this.bufferManager.GetByteBuffer(frameSize);
try
{
Buffer.BlockCopy(header, 0, buffer.Buffer, buffer.Offset, FixedWidth.UInt);
await this.ReceiveBufferAsync(buffer.Buffer, buffer.Offset + FixedWidth.UInt, frameSize - FixedWidth.UInt).ConfigureAwait(false);
buffer.Append(frameSize);
Trace.WriteBuffer("RECV {0}", buffer.Buffer, buffer.Offset, buffer.Length);
if (!onBuffer(buffer))
{
break;
}
}
finally
{
buffer.ReleaseReference();
}
}
}
internal void SendCommand(ushort channel, DescribedList command)
{
if (command.Descriptor.Code == Codec.Close.Code || this.state < ConnectionState.CloseSent)
{
ByteBuffer buffer = this.AllocateBuffer(Frame.CmdBufferSize);
Frame.Encode(buffer, FrameType.Amqp, channel, command);
this.writer.Send(buffer);
Trace.WriteLine(TraceLevel.Frame, "SEND (ch={0}) {1}", channel, command);
Trace.WriteBuffer("SEND {0}", buffer.Buffer, buffer.Offset, buffer.Length);
if (this.heartBeat != null)
{
this.heartBeat.OnSend();
}
}
}
internal int SendCommand(ushort channel, Transfer transfer, bool first, ByteBuffer payload, int reservedBytes)
{
this.ThrowIfClosed("Send");
ByteBuffer buffer = this.AllocateBuffer(Frame.CmdBufferSize);
Frame.Encode(buffer, FrameType.Amqp, channel, transfer);
int payloadSize = payload.Length;
int frameSize = buffer.Length + payloadSize;
bool more = frameSize > this.remoteMaxFrameSize;
if (more)
{
transfer.More = true;
buffer.Reset();
Frame.Encode(buffer, FrameType.Amqp, channel, transfer);
frameSize = (int)this.remoteMaxFrameSize;
payloadSize = frameSize - buffer.Length;
}
AmqpBitConverter.WriteInt(buffer.Buffer, buffer.Offset, frameSize);
ByteBuffer frameBuffer;
if (first && !more && reservedBytes >= buffer.Length)
{
// optimize for most common case: single-transfer message
frameBuffer = this.WrapBuffer(payload, payload.Offset - buffer.Length, frameSize);
Array.Copy(buffer.Buffer, buffer.Offset, frameBuffer.Buffer, frameBuffer.Offset, buffer.Length);
buffer.ReleaseReference();
}
else
{
AmqpBitConverter.WriteBytes(buffer, payload.Buffer, payload.Offset, payloadSize);
frameBuffer = buffer;
}
payload.Complete(payloadSize);
this.writer.Send(frameBuffer);
Trace.WriteLine(TraceLevel.Frame, "SEND (ch={0}) {1} payload {2}", channel, transfer, payloadSize);
Trace.WriteBuffer("SEND {0}", frameBuffer.Buffer, frameBuffer.Offset, frameBuffer.Length);
return(payloadSize);
}
