/// <summary>
/// Processes session and link frames.
/// </summary>
/// <param name="frame">The received frame.</param>
public virtual void ProcessFrame(Frame frame)
{
Performative command = frame.Command;
try
{
AmqpDebug.Log(this, false, command);
if (command.DescriptorCode == Begin.Code)
{
this.OnReceiveBegin((Begin)command);
}
else if (command.DescriptorCode == End.Code)
{
this.OnReceiveEnd((End)command);
}
else if (command.DescriptorCode == Disposition.Code)
{
this.OnReceiveDisposition((Disposition)command);
}
else if (command.DescriptorCode == Flow.Code)
{
this.OnReceiveFlow((Flow)command);
}
else
{
this.OnReceiveLinkFrame(frame);
}
}
catch (Exception exception) when(!Fx.IsFatal(exception))
{
AmqpTrace.Provider.AmqpLogError(this, "ProcessFrame", exception);
this.SafeClose(exception);
}
}
void HandleSaslCommand(Performative command)
{
if (command.DescriptorCode == SaslMechanisms.Code)
{
this.OnSaslServerMechanisms((SaslMechanisms)command);
}
else if (command.DescriptorCode == SaslInit.Code)
{
this.OnSaslInit((SaslInit)command);
}
else if (command.DescriptorCode == SaslChallenge.Code)
{
this.saslHandler.OnChallenge((SaslChallenge)command);
}
else if (command.DescriptorCode == SaslResponse.Code)
{
this.saslHandler.OnResponse((SaslResponse)command);
}
else if (command.DescriptorCode == SaslOutcome.Code)
{
this.OnSaslOutcome((SaslOutcome)command);
}
else
{
throw new AmqpException(AmqpErrorCode.NotAllowed, command.ToString());
}
}
/// <summary>
/// For internal implementation only.
/// </summary>
public void SendCommand(Performative command, ushort channel, ByteBuffer payload)
{
#if DEBUG
Frame frame = new Frame();
frame.Channel = channel;
frame.Command = command;
frame.Payload = payload.AsSegment();
frame.Trace(true, this);
AmqpTrace.Provider.AmqpLogOperationVerbose(this, TraceOperation.Send, frame);
#endif
int frameSize;
if (payload == null)
{
// The frame buffer is disposed when the write completes
ByteBuffer buffer = Frame.EncodeCommand(FrameType.Amqp, channel, command, 0);
frameSize = buffer.Length;
this.SendBuffer(buffer);
}
else
{
// The frame buffer is disposed when the write completes
ByteBuffer cmdBuffer = Frame.EncodeCommand(FrameType.Amqp, channel, command, payload.Length);
frameSize = cmdBuffer.Length + payload.Length;
this.SendBuffer(cmdBuffer, payload);
}
this.heartBeat.OnSend();
if (this.UsageMeter != null)
{
this.UsageMeter.OnWrite(this, command == null ? 0 : command.DescriptorCode, frameSize);
}
}
void HandleSaslCommand(Performative command)
{
Utils.Trace(TraceLevel.Verbose, "{0}: Handle SASL command {1}", this.transport, command);
if (command.DescriptorCode == SaslMechanisms.Code)
{
this.OnSaslServerMechanisms((SaslMechanisms)command);
}
else if (command.DescriptorCode == SaslInit.Code)
{
this.OnSaslInit((SaslInit)command);
}
else if (command.DescriptorCode == SaslChallenge.Code)
{
this.saslHandler.OnChallenge((SaslChallenge)command);
}
else if (command.DescriptorCode == SaslResponse.Code)
{
this.saslHandler.OnResponse((SaslResponse)command);
}
else if (command.DescriptorCode == SaslOutcome.Code)
{
this.OnSaslOutcome((SaslOutcome)command);
}
else
{
throw new AmqpException(AmqpError.NotAllowed, command.ToString());
}
}
public static void Log(object source, bool send, Performative command)
{
AmqpDebugImpl instance = AmqpDebugImpl.GetInstance(source);
ulong code = command.DescriptorCode;
uint p1 = 0;
uint p2 = 0;
if (code == Transfer.Code)
{
Transfer transfer = (Transfer)command;
p1 = transfer.DeliveryId ?? 0;
p2 = transfer.Settled() ? 1u : 0u;
}
else if (code == Disposition.Code)
{
Disposition disp = (Disposition)command;
p1 = disp.First ?? 0;
p2 = disp.Last ?? p1;
}
else if (code == Flow.Code)
{
Flow flow = (Flow)command;
p1 = flow.IncomingWindow ?? 0;
p2 = flow.NextIncomingId ?? 0;
if (flow.Handle.HasValue)
{
instance.LogInternal(send, code, flow.DeliveryCount.Value, flow.LinkCredit.Value);
}
}
instance.LogInternal(send, code, p1, p2);
}
public void WriteFrame(Performative command, bool needReply)
{
try
{
#if DEBUG
Frame frame = new Frame(FrameType.Sasl)
{
Command = command
};
frame.Trace(true);
AmqpTrace.Provider.AmqpLogOperationVerbose(this, TraceOperation.Send, frame);
#endif
ByteBuffer buffer = Frame.EncodeCommand(FrameType.Sasl, 0, command, 0);
TransportAsyncCallbackArgs args = new TransportAsyncCallbackArgs();
args.SetBuffer(buffer);
args.CompletedCallback = onWriteFrameComplete;
args.UserToken = this;
args.UserToken2 = needReply;
this.writer.WriteBuffer(args);
}
catch (Exception exception)
{
if (Fx.IsFatal(exception))
{
throw;
}
this.HandleException("WriteFrame", exception);
}
}
public void ProcessFrame(Frame frame)
{
Performative command = frame.Command;
try
{
if (command.DescriptorCode == Attach.Code)
{
this.OnReceiveAttach((Attach)command);
}
else if (command.DescriptorCode == Detach.Code)
{
this.OnReceiveDetach((Detach)command);
}
else if (command.DescriptorCode == Transfer.Code)
{
// Transfer is called by incoming session directly
//this.OnReceiveTransfer((Transfer)command, frame.Payload);
}
else if (command.DescriptorCode == Flow.Code)
{
this.OnReceiveFlow((Flow)command);
}
else
{
throw new AmqpException(AmqpError.InvalidField, "descriptor-code");
}
}
catch (AmqpException exception)
{
this.TryClose(exception);
Utils.Trace(TraceLevel.Error, "{0}: Fault with exception: {1}", this, exception);
}
}
public void ProcessFrame(Frame frame)
{
Performative command = frame.Command;
try
{
if (command.DescriptorCode == Attach.Code)
{
this.OnReceiveAttach((Attach)command);
}
else if (command.DescriptorCode == Detach.Code)
{
this.OnReceiveDetach((Detach)command);
}
else if (command.DescriptorCode == Transfer.Code)
{
this.OnReceiveTransfer((Transfer)command, frame);
}
else if (command.DescriptorCode == Flow.Code)
{
this.OnReceiveFlow((Flow)command);
}
else
{
throw new AmqpException(AmqpErrorCode.InvalidField, AmqpResources.GetString(AmqpResources.AmqpInvalidPerformativeCode, command.DescriptorCode));
}
}
catch (Exception exception) when(!Fx.IsFatal(exception))
{
AmqpTrace.Provider.AmqpLogError(this, nameof(ProcessFrame), exception.Message);
this.SafeClose(exception);
}
}
public void SendCommand(Performative command, ushort channel, Action <object> callback, object state)
{
Frame frame = new Frame(FrameType.Amqp, channel, command);
Utils.Trace(TraceLevel.Frame, "SEND {0}", frame);
this.AsyncIO.Writer.WriteBuffer(frame.Buffer, command.PayloadList, callback, state);
this.active = true;
}
void WriteCommand(Performative command)
{
Frame frame = new Frame(FrameType.Amqp, 0, command);
ByteBuffer byteBuffer = ByteBuffer.Wrap(Frame.HeaderSize + command.EncodeSize);
frame.Encode(byteBuffer);
this.AsyncIO.Writer.WriteBuffer(frame.Buffer, command.PayloadList, null, null);
}
protected void NotifyOpening(Performative command)
{
EventHandler <OpenEventArgs> eventHandler = this.Opening;
if (eventHandler != null)
{
eventHandler(this, new OpenEventArgs(command));
}
}
protected void NotifyOpening(Performative command)
{
EventHandler <OpenEventArgs> opening = this.Opening;
if (opening != null)
{
opening(this, new OpenEventArgs(command));
}
}
void OnReceiveSessionFrame(Frame frame)
{
AmqpSession session = null;
Performative command = frame.Command;
ushort channel = frame.Channel;
if (command.DescriptorCode == Begin.Code)
{
Begin begin = (Begin)command;
if (begin.RemoteChannel.HasValue)
{
// reply to begin
lock (this.ThisLock)
{
if (!this.sessionsByLocalHandle.TryGetObject(begin.RemoteChannel.Value, out session))
{
throw new AmqpException(AmqpErrorCode.NotFound, AmqpResources.GetString(AmqpResources.AmqpChannelNotFound, begin.RemoteChannel.Value, this));
}
session.RemoteChannel = channel;
this.sessionsByRemoteHandle.Add(channel, session);
}
}
else
{
// new begin request
AmqpSessionSettings settings = AmqpSessionSettings.Create(begin);
settings.RemoteChannel = channel;
session = this.SessionFactory.CreateSession(this, settings);
this.AddSession(session, channel);
}
}
else
{
if (!this.sessionsByRemoteHandle.TryGetObject((uint)channel, out session))
{
if (command.DescriptorCode == End.Code ||
command.DescriptorCode == Detach.Code ||
this.Settings.IgnoreMissingSessions)
{
// The session close may timed out already
AmqpTrace.Provider.AmqpMissingHandle(this, "session", channel);
return;
}
throw new AmqpException(AmqpErrorCode.NotFound, AmqpResources.GetString(AmqpResources.AmqpChannelNotFound, channel, this));
}
else if (command.DescriptorCode == End.Code)
{
this.sessionsByRemoteHandle.Remove((uint)channel);
session.RemoteChannel = null;
}
}
session.ProcessFrame(frame);
}
void OnReceiveLinkFrame(Frame frame)
{
AmqpLink link = null;
Performative command = frame.Command;
if (command.DescriptorCode == Attach.Code)
{
Attach attach = (Attach)command;
lock (this.ThisLock)
{
this.links.TryGetValue(attach.LinkName, out link);
}
if (link == null)
{
if (!this.TryCreateRemoteLink(attach, out link))
{
return;
}
}
else
{
lock (this.ThisLock)
{
link.RemoteHandle = attach.Handle;
this.linksByRemoteHandle.Add(attach.Handle.Value, link);
}
}
}
else
{
LinkPerformative linkBody = (LinkPerformative)command;
if (!this.linksByRemoteHandle.TryGetObject(linkBody.Handle.Value, out link))
{
if (this.Settings.IgnoreMissingLinks)
{
AmqpTrace.Provider.AmqpMissingHandle(this.connection, this, "link", linkBody.Handle.Value);
return;
}
if (linkBody.DescriptorCode != Detach.Code)
{
this.SafeClose(new AmqpException(AmqpErrorCode.UnattachedHandle, AmqpResources.GetString(AmqpResources.AmqpHandleNotFound, linkBody.Handle.Value, this)));
}
return;
}
}
link.ProcessFrame(frame);
}
public virtual void ProcessFrame(Frame frame)
{
Performative command = frame.Command;
try
{
if (command.ValueBuffer != null)
{
// Deferred link frames are decoded here
command.DecodeValue(command.ValueBuffer);
if (command.ValueBuffer.Length > 0)
{
command.Payload = command.ValueBuffer.Array;
}
command.ValueBuffer = null;
Utils.Trace(TraceLevel.Frame, "RECV {0}", frame);
}
if (command.DescriptorCode == Begin.Code)
{
this.OnReceiveBegin((Begin)command);
}
else if (command.DescriptorCode == End.Code)
{
this.OnReceiveEnd((End)command);
}
else if (command.DescriptorCode == Disposition.Code)
{
this.OnReceiveDisposition((Disposition)command);
}
else if (command.DescriptorCode == Flow.Code)
{
this.OnReceiveFlow((Flow)command);
}
else
{
this.OnReceiveLinkFrame(frame);
}
}
catch (Exception exception)
{
if (Fx.IsFatal(exception))
{
throw;
}
Utils.Trace(TraceLevel.Error, "{0}: Fault with exception: {1}", this, exception);
this.TryClose(exception);
}
}
private void OnReceiveSessionFrame(Frame frame)
{
AmqpSession nullable = null;
Performative command = frame.Command;
ushort channel = frame.Channel;
if (command.DescriptorCode != Begin.Code)
{
if (!this.sessionsByRemoteHandle.TryGetObject(channel, out nullable))
{
if (command.DescriptorCode != End.Code && command.DescriptorCode != Detach.Code && !base.Settings.IgnoreMissingSessions)
{
throw new AmqpException(AmqpError.NotFound, SRAmqp.AmqpChannelNotFound(channel, this));
}
return;
}
if (command.DescriptorCode == End.Code)
{
this.sessionsByRemoteHandle.Remove(channel);
nullable.RemoteChannel = null;
}
}
else
{
Begin begin = (Begin)command;
if (!begin.RemoteChannel.HasValue)
{
AmqpSessionSettings amqpSessionSetting = AmqpSessionSettings.Create(begin);
amqpSessionSetting.RemoteChannel = new ushort?(channel);
nullable = this.SessionFactory.CreateSession(this, amqpSessionSetting);
this.AddSession(nullable, new ushort?(channel));
}
else
{
lock (base.ThisLock)
{
if (!this.sessionsByLocalHandle.TryGetObject(begin.RemoteChannel.Value, out nullable))
{
Error notFound = AmqpError.NotFound;
ushort?remoteChannel = begin.RemoteChannel;
throw new AmqpException(notFound, SRAmqp.AmqpChannelNotFound(remoteChannel.Value, this));
}
nullable.RemoteChannel = new ushort?(channel);
this.sessionsByRemoteHandle.Add(channel, nullable);
}
}
}
nullable.ProcessFrame(frame);
}
void OnReceiveSessionFrame(Frame frame)
{
AmqpSession session = null;
Performative command = frame.Command;
ushort channel = frame.Channel;
if (command.DescriptorCode == Begin.Code)
{
Begin begin = (Begin)command;
if (begin.RemoteChannel.HasValue)
{
// reply to begin
lock (this.ThisLock)
{
if (!this.sessionsByLocalHandle.TryGetObject(begin.RemoteChannel.Value, out session))
{
throw new AmqpException(AmqpError.NotFound, SRClient.AmqpChannelNotFound(begin.RemoteChannel.Value));
}
session.RemoteChannel = channel;
this.sessionsByRemoteHandle.Add(channel, session);
}
}
else
{
// new begin request
AmqpSessionSettings settings = AmqpSessionSettings.Create(begin);
settings.RemoteChannel = channel;
session = this.SessionFactory.CreateSession(this, settings);
this.AddSession(session, channel);
}
}
else
{
if (!this.sessionsByRemoteHandle.TryGetObject((uint)channel, out session))
{
if (frame.Command.DescriptorCode == End.Code ||
frame.Command.DescriptorCode == Detach.Code)
{
return;
}
throw new AmqpException(AmqpError.NotFound, SRClient.AmqpChannelNotFound((uint)channel));
}
}
session.ProcessFrame(frame);
}
private void ProcessFrame(Frame frame)
{
Performative command = frame.Command;
if (command.DescriptorCode == Open.Code)
{
this.OnReceiveOpen((Open)frame.Command);
return;
}
if (command.DescriptorCode != Close.Code)
{
this.OnReceiveSessionFrame(frame);
return;
}
this.OnReceiveClose((Close)frame.Command);
}
public void WriteFrame(Performative command, bool needReply)
{
try
{
Frame frame = new Frame(FrameType.Sasl, 0, command);
TransportAsyncCallbackArgs args = new TransportAsyncCallbackArgs();
args.SetBuffer(frame.Buffer);
args.CompletedCallback = this.onWriteFrameComplete;
args.UserToken = needReply;
this.writer.WriteBuffer(args);
}
catch (Exception exception)
{
this.HandleException(exception);
}
}
public void Message(Performative p, string senderId, string receiverId, string content)
{
switch (p)
{
case Performative.Inform:
ThreadPool.QueueUserWorkItem(delegate { Communication.Send(senderId, receiverId, "inform[content:" + content + ";]"); });
break;
case Performative.Cfp:
ThreadPool.QueueUserWorkItem(delegate { Communication.Send(senderId, receiverId, "cfp[content:" + content + ";]"); });
break;
case Performative.Proposal:
ThreadPool.QueueUserWorkItem(delegate { Communication.Send(senderId, receiverId, "proposal[from:" + senderId + ";content:" + content + "]"); });
break;
}
}
private void OnReceiveLinkFrame(Frame frame)
{
AmqpLink handle = null;
Performative command = frame.Command;
if (command.DescriptorCode != Attach.Code)
{
LinkPerformative linkPerformative = (LinkPerformative)command;
if (!this.linksByRemoteHandle.TryGetObject(linkPerformative.Handle.Value, out handle))
{
if (this.Settings.IgnoreMissingLinks)
{
return;
}
if (linkPerformative.DescriptorCode != Detach.Code)
{
Error unattachedHandle = AmqpError.UnattachedHandle;
uint? nullable = linkPerformative.Handle;
base.SafeClose(new AmqpException(unattachedHandle, SRAmqp.AmqpHandleNotFound(nullable.Value, this)));
}
return;
}
}
else
{
Attach attach = (Attach)command;
lock (base.ThisLock)
{
this.links.TryGetValue(attach.LinkName, out handle);
}
if (handle != null)
{
lock (base.ThisLock)
{
handle.RemoteHandle = attach.Handle;
this.linksByRemoteHandle.Add(attach.Handle.Value, handle);
}
}
else if (!this.TryCreateRemoteLink(attach, out handle))
{
return;
}
}
handle.ProcessFrame(frame);
}
void ProcessFrame(Frame frame)
{
Performative command = frame.Command;
Fx.Assert(command != null, "Must have a valid command");
if (command.DescriptorCode == OpenCommand.Code)
{
this.OnReceiveOpen((Open)frame.Command);
}
else if (command.DescriptorCode == CloseCommand.Code)
{
this.OnReceiveClose((Close)frame.Command);
}
else
{
this.OnReceiveSessionFrame(frame);
}
}
public void SendCommand(Performative command, ushort channel, ArraySegment <byte>[] payload)
{
if (payload == null)
{
base.SendBuffer(Frame.EncodeCommand(FrameType.Amqp, channel, command, 0));
return;
}
ByteBuffer[] byteBuffer = new ByteBuffer[1 + (int)payload.Length];
int count = 0;
for (int i = 0; i < (int)payload.Length; i++)
{
ArraySegment <byte> nums = payload[i];
count = count + nums.Count;
byteBuffer[i + 1] = new ByteBuffer(nums);
}
byteBuffer[0] = Frame.EncodeCommand(FrameType.Amqp, channel, command, count);
base.SendBuffers(byteBuffer);
}
public void SendCommand(Performative command, ushort channel, ArraySegment <byte>[] payload)
{
#if DEBUG
Frame frame = new Frame();
frame.Channel = channel;
frame.Command = command;
frame.Trace(true, this, channel, command, -1);
AmqpTrace.Provider.AmqpLogOperationVerbose(this, TraceOperation.Send, frame);
#endif
int frameSize = 0;
if (payload == null)
{
// The frame buffer is disposed when the write completes
ByteBuffer buffer = Frame.EncodeCommand(FrameType.Amqp, channel, command, 0);
frameSize = buffer.Length;
this.SendBuffer(buffer);
}
else
{
ByteBuffer[] buffers = new ByteBuffer[1 + payload.Length];
int payloadSize = 0;
for (int i = 0; i < payload.Length; ++i)
{
ArraySegment <byte> segment = payload[i];
payloadSize += segment.Count;
buffers[i + 1] = new ByteBuffer(segment);
}
// The frame buffer is disposed when the write completes
ByteBuffer cmdBuffer = Frame.EncodeCommand(FrameType.Amqp, channel, command, payloadSize);
frameSize = cmdBuffer.Length + payloadSize;
buffers[0] = cmdBuffer;
this.SendBuffers(buffers);
}
this.heartBeat.OnSend();
if (this.UsageMeter != null)
{
this.UsageMeter.OnWrite(this, command == null ? 0 : command.DescriptorCode, frameSize);
}
}
public void WriteFrame(Performative command, bool needReply)
{
try
{
ByteBuffer byteBuffer = Frame.EncodeCommand(FrameType.Sasl, 0, command, 0);
TransportAsyncCallbackArgs transportAsyncCallbackArg = new TransportAsyncCallbackArgs();
transportAsyncCallbackArg.SetBuffer(byteBuffer);
transportAsyncCallbackArg.CompletedCallback = SaslNegotiator.onWriteFrameComplete;
transportAsyncCallbackArg.UserToken = this;
transportAsyncCallbackArg.UserToken2 = needReply;
this.writer.WriteBuffer(transportAsyncCallbackArg);
}
catch (Exception exception1)
{
Exception exception = exception1;
if (Fx.IsFatal(exception))
{
throw;
}
this.HandleException("WriteFrame", exception);
}
}
void SendCommand(Performative command, Action <object> callback, object state)
{
this.connection.SendCommand(command, this.LocalChannel, callback, state);
Utils.Trace(TraceLevel.Debug, "{0}: Sent command {1}", this, command);
if (command.DescriptorCode == Disposition.Code)
{
this.diagnostics.SendDisposition();
Disposition disposition = (Disposition)command;
this.diagnostics.SetLastDisposition(disposition.Last == null ? disposition.First.Value : disposition.Last.Value);
Utils.Trace(TraceLevel.Verbose, "{0}: Dispose {1}-{2}, settled:{3}, outcome:{4}.", this, disposition.First.Value, disposition.Last, disposition.Settled, disposition.State.DescriptorName.Value);
}
else if (command.DescriptorCode == Flow.Code)
{
this.diagnostics.SendFlow();
}
else if (command.DescriptorCode == Transfer.Code)
{
this.diagnostics.SendTransfer();
}
}
public virtual void ProcessFrame(Frame frame)
{
Performative command = frame.Command;
try
{
if (command.DescriptorCode == Begin.Code)
{
this.OnReceiveBegin((Begin)command);
}
else if (command.DescriptorCode == End.Code)
{
this.OnReceiveEnd((End)command);
}
else if (command.DescriptorCode == Disposition.Code)
{
this.OnReceiveDisposition((Disposition)command);
}
else if (command.DescriptorCode != Flow.Code)
{
this.OnReceiveLinkFrame(frame);
}
else
{
this.OnReceiveFlow((Flow)command);
}
}
catch (Exception exception1)
{
Exception exception = exception1;
if (Fx.IsFatal(exception))
{
throw;
}
MessagingClientEtwProvider.TraceClient <AmqpSession, Exception>((AmqpSession source, Exception ex) => MessagingClientEtwProvider.Provider.EventWriteAmqpLogError(source, "ProcessFrame", ex.Message), this, exception);
base.SafeClose(exception);
}
}
public void ProcessFrame(Frame frame)
{
Performative command = frame.Command;
try
{
if (command.DescriptorCode == Attach.Code)
{
this.OnReceiveAttach((Attach)command);
}
else if (command.DescriptorCode == Detach.Code)
{
this.OnReceiveDetach((Detach)command);
}
else if (command.DescriptorCode != Transfer.Code)
{
if (command.DescriptorCode != Flow.Code)
{
throw new AmqpException(AmqpError.InvalidField, SRAmqp.AmqpInvalidPerformativeCode(command.DescriptorCode));
}
this.OnReceiveFlow((Flow)command);
}
else
{
this.OnReceiveTransfer((Transfer)command, frame);
}
}
catch (Exception exception1)
{
Exception exception = exception1;
if (Fx.IsFatal(exception))
{
throw;
}
MessagingClientEtwProvider.TraceClient <AmqpLink, Exception>((AmqpLink source, Exception ex) => MessagingClientEtwProvider.Provider.EventWriteAmqpLogError(source, "ProcessFrame", ex.Message), this, exception);
base.SafeClose(exception);
}
}
public static void Trace(this object target, bool send, AmqpConnection connection, ushort channel, Performative performative, int payload)
{
if (AmqpDebug)
{
if (PerformativeTraceCallback != null)
{
PerformativeTraceCallback(send, connection, channel, performative, payload);
}
else
{
Trace(target, send);
}
}
}
public OpenEventArgs(Performative command)
{
this.command = command;
}
