/// <summary>
/// Receives a flow from the session.
/// </summary>
/// <param name="flow">The received flow.</param>
protected virtual void OnReceiveFlow(Flow flow)
{
this.outgoingChannel.OnFlow(flow);
this.incomingChannel.OnFlow(flow);
if (flow.Handle.HasValue)
{
AmqpLink link = null;
if (!this.linksByRemoteHandle.TryGetObject(flow.Handle.Value, out link))
{
if (this.Settings.IgnoreMissingLinks)
{
AmqpTrace.Provider.AmqpMissingHandle(this.connection, this, "link", flow.Handle.Value);
return;
}
this.SafeClose(new AmqpException(AmqpErrorCode.UnattachedHandle, AmqpResources.GetString(AmqpResources.AmqpHandleNotFound, flow.Handle.Value, this)));
return;
}
link.OnFlow(flow);
}
else if (flow.Echo())
{
this.SendFlow();
}
}
protected override void OnProcessTransfer(Delivery delivery, Transfer transfer, Frame frame)
{
Fx.Assert(delivery == null || delivery == this.currentMessage, "The delivery must be null or must be the same as the current message.");
if (this.Settings.MaxMessageSize.HasValue && this.Settings.MaxMessageSize.Value > 0)
{
ulong size = (ulong)(this.currentMessage.BytesTransfered + frame.Payload.Count);
if (size > this.Settings.MaxMessageSize.Value)
{
if (this.IsClosing())
{
// The closing sequence has been started, so any
// transfer is meaningless, so we can treat them as no-op
return;
}
throw new AmqpException(AmqpErrorCode.MessageSizeExceeded,
AmqpResources.GetString(AmqpResources.AmqpMessageSizeExceeded, this.currentMessage.DeliveryId.Value, size, this.Settings.MaxMessageSize.Value));
}
}
Fx.Assert(this.currentMessage != null, "Current message must have been created!");
ArraySegment <byte> payload = frame.Payload;
frame.RawByteBuffer.AdjustPosition(payload.Offset, payload.Count);
frame.RawByteBuffer.Clone(); // Message also owns the buffer from now on
this.currentMessage.AddPayload(frame.RawByteBuffer, !transfer.More());
if (!transfer.More())
{
AmqpMessage message = this.currentMessage;
this.currentMessage = null;
AmqpTrace.Provider.AmqpReceiveMessage(this, message.DeliveryId.Value, message.RawByteBuffers.Count);
this.OnReceiveMessage(message);
}
}
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 Open(TimeSpan timeout)
{
bool syncOpen = false;
lock (this.thisLock)
{
if (this.openCalled)
{
throw new InvalidOperationException(AmqpResources.GetString(AmqpResources.AmqpInvalidReOpenOperation, this, this.State));
}
this.openCalled = true;
if (this.State == AmqpObjectState.OpenReceived)
{
syncOpen = true;
}
}
if (syncOpen)
{
this.OpenInternal();
this.NotifyOpened();
}
else
{
this.OnOpen(timeout);
}
}
public void Open(TimeSpan timeout)
{
bool syncOpen = false;
lock (this.thisLock)
{
if (this.openCalled)
{
var exception = new InvalidOperationException(AmqpResources.GetString(AmqpResources.AmqpInvalidReOpenOperation, this, this.State));
AmqpTrace.Provider.AmqpThrowingExceptionWarning(ExceptionTrace.GetDetailsForThrownException(exception));
throw Fx.Exception.AsWarning(exception);
}
this.openCalled = true;
if (this.State == AmqpObjectState.OpenReceived)
{
syncOpen = true;
}
}
if (syncOpen)
{
this.OpenInternal();
this.NotifyOpened();
}
else
{
this.OnOpen(timeout);
}
}
protected StateTransition TransitState(string operation, StateTransition[] states)
{
StateTransition state = null;
lock (this.ThisLock)
{
foreach (StateTransition st in states)
{
if (st.From == this.State)
{
this.State = st.To;
state = st;
break;
}
}
}
if (state == null)
{
throw new AmqpException(AmqpErrorCode.IllegalState, AmqpResources.GetString(AmqpResources.AmqpIllegalOperationState, operation, this.State));
}
AmqpTrace.Provider.AmqpStateTransition(this, operation, state.From, state.To);
return(state);
}
public uint Add(T value)
{
if (this.count > this.maxHandle)
{
throw new AmqpException(AmqpErrorCode.ResourceLimitExceeded, AmqpResources.GetString(AmqpResources.AmqpHandleExceeded, this.maxHandle));
}
else if (this.count >= this.handleArray.Length)
{
this.GrowHandleArray(this.handleArray.Length * 2);
int index = this.count;
this.handleArray[index] = value;
this.count++;
return((uint)index);
}
else
{
for (int i = 0; i < this.handleArray.Length; i++)
{
if (this.handleArray[i] == null)
{
this.handleArray[i] = value;
this.count++;
return((uint)i);
}
}
// count and actual handles go out of sync. there must be a bug
throw new AmqpException(AmqpErrorCode.InternalError, null);
}
}
protected virtual void CompleteOnTimer()
{
if (this.timer != null)
{
this.timer.Dispose();
}
this.CompleteInternal(false, new TimeoutException(AmqpResources.GetString(AmqpResources.AmqpTimeout, this.timeout, this.Target)));
}
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);
}
static Error AdvanceBuffer(ByteBuffer buffer, uint size)
{
if (size > buffer.Length)
{
return(GetDecodeError(AmqpResources.GetString(Resources.AmqpInsufficientBufferSize, size, buffer.Length)));
}
buffer.Complete((int)size);
return(null);
}
public void Validate(bool write, int dataSize)
{
bool valid = false;
if (write)
{
if (this.Size < dataSize && this.autoGrow)
{
if (this.references != 1)
{
throw new InvalidOperationException("Cannot grow the current buffer because it has more than one references");
}
int newSize = Math.Max(this.Capacity * 2, this.Capacity + dataSize);
ManagedBuffer newBuffer;
if (this.bufferManager != null)
{
newBuffer = ByteBuffer.AllocateBuffer(newSize, this.bufferManager);
}
else
{
newBuffer = new ManagedBuffer(new byte[newSize], null);
}
System.Buffer.BlockCopy(this.buffer, this.start, newBuffer.Buffer, 0, this.Capacity);
int consumed = this.read - this.start;
int written = this.write - this.start;
this.start = 0;
this.read = consumed;
this.write = written;
this.end = newSize;
if (this.bufferManager != null)
{
this.bufferManager.ReturnBuffer(this.buffer);
}
this.buffer = newBuffer.Buffer;
this.bufferManager = newBuffer.BufferManager;
}
valid = this.Size >= dataSize;
}
else
{
valid = this.Length >= dataSize;
}
if (!valid)
{
throw new AmqpException(AmqpErrorCode.DecodeError, AmqpResources.GetString(AmqpResources.AmqpInsufficientBufferSize, dataSize, write ? this.Size : this.Length));
}
}
protected void ProcessTransfer(Transfer transfer, Frame rawFrame, Delivery delivery, bool newDelivery)
{
if (newDelivery)
{
if (this.linkCredit < uint.MaxValue)
{
bool creditAvailable = true;
lock (this.syncRoot)
{
// Updating new total credit is delayed to avoid flooding
// the network with flows when there are many links that are
// frequently opened/closed
if (this.tempTotalCredit != null &&
this.ApplyTempTotalLinkCredit())
{
this.SendFlow(false, false, properties: null);
}
if (this.linkCredit == 0 && this.bufferedCredit == 0)
{
creditAvailable = false;
}
else
{
this.deliveryCount.Increment();
if (this.bufferedCredit > 0)
{
--this.bufferedCredit;
}
else if (this.linkCredit < uint.MaxValue)
{
--this.linkCredit;
}
}
}
if (!creditAvailable)
{
throw new AmqpException(AmqpErrorCode.TransferLimitExceeded,
AmqpResources.GetString(AmqpResources.AmqpTransferLimitExceeded, delivery.DeliveryId.Value));
}
}
if (!delivery.Settled)
{
lock (this.syncRoot)
{
this.unsettledMap.Add(delivery.DeliveryTag, delivery);
}
}
}
this.OnProcessTransfer(delivery, transfer, rawFrame);
}
/// <summary>
/// Compares two integers as sequence numbers.
/// </summary>
/// <param name="x">The first number.</param>
/// <param name="y">The second number.</param>
/// <returns>A negative integer, 0, or a possitive number if the first is
/// less than, equal or greater than the second respectively.</returns>
public static int Compare(int x, int y)
{
int delta = x - y;
if (delta == int.MinValue)
{
// Behavior of comparing 0u-2147483648u, 1u-2147483649u, ...
// is undefined, so we do not allow it.
throw new InvalidOperationException(AmqpResources.GetString(AmqpResources.AmqpInvalidSequenceNumberComparison, x, y));
}
return(delta);
}
static Error ScanDataSection(byte formatCode, ByteBuffer buffer)
{
switch (formatCode)
{
case FormatCode.Binary8:
return(AdvanceBuffer(buffer, AmqpBitConverter.ReadUByte(buffer)));
case FormatCode.Binary32:
return(AdvanceBuffer(buffer, AmqpBitConverter.ReadUInt(buffer)));
default:
return(GetDecodeError(AmqpResources.GetString(Resources.AmqpInvalidFormatCode, formatCode, buffer.Offset)));
}
}
void EnsureBodyType(SectionFlag expected)
{
if (this.sectionFlags == 0 && this.buffer != null)
{
this.Initialize(SectionFlag.All);
}
SectionFlag actual = this.sectionFlags & SectionFlag.Body;
if (actual > 0 && actual != expected)
{
throw new InvalidOperationException(AmqpResources.GetString(Resources.AmqpInvalidMessageBodyType, actual, expected));
}
}
public IAsyncResult BeginOpen(TimeSpan timeout, AsyncCallback callback, object state)
{
lock (this.thisLock)
{
if (this.openCalled)
{
throw new InvalidOperationException(AmqpResources.GetString(AmqpResources.AmqpInvalidReOpenOperation, this, this.State));
}
this.openCalled = true;
}
AmqpTrace.Provider.AmqpLogOperationVerbose(this, TraceOperation.Execute, "BeginOpen");
return(new OpenAsyncResult(this, timeout, callback, state));
}
static void OnHeartBeatTimer(object state)
{
TimedHeartBeat thisPtr = (TimedHeartBeat)state;
if (thisPtr.connection.IsClosing())
{
return;
}
DateTime now = DateTime.UtcNow;
try
{
if (thisPtr.localInterval < uint.MaxValue &&
now.Subtract(thisPtr.lastReceiveTime).TotalMilliseconds > thisPtr.localInterval)
{
string message = AmqpResources.GetString(AmqpResources.AmqpConnectionInactive,
thisPtr.localInterval, thisPtr.connection.Settings.ContainerId);
AmqpTrace.Provider.AmqpLogError(thisPtr.connection, "OnHeartBeatTimer", message);
thisPtr.connection.SafeClose(new AmqpException(AmqpErrorCode.ConnectionForced, message));
return;
}
if (thisPtr.remoteInterval < uint.MaxValue &&
now.Subtract(thisPtr.lastSendTime).TotalMilliseconds >= thisPtr.remoteInterval)
{
thisPtr.connection.SendCommand(null, 0, null);
}
thisPtr.SetTimer(now);
}
catch (Exception exception)
{
if (Fx.IsFatal(exception))
{
throw;
}
if (!thisPtr.connection.IsClosing())
{
AmqpTrace.Provider.AmqpLogError(thisPtr.connection, "OnHeartBeatTimer", exception.Message);
thisPtr.connection.SafeClose(exception);
}
}
}
async Task <RequestResponseAmqpLink> CreateCbsLinkAsync(TimeSpan timeout)
{
string address = CbsConstants.CbsAddress;
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
AmqpSession session = null;
RequestResponseAmqpLink link = null;
Exception lastException = null;
while (timeoutHelper.RemainingTime() > TimeSpan.Zero)
{
try
{
AmqpSessionSettings sessionSettings = new AmqpSessionSettings()
{
Properties = new Fields()
};
session = this.connection.CreateSession(sessionSettings);
await session.OpenAsync(timeoutHelper.RemainingTime()).ConfigureAwait(false);
Fields properties = new Fields();
properties.Add(CbsConstants.TimeoutName, (uint)timeoutHelper.RemainingTime().TotalMilliseconds);
link = new RequestResponseAmqpLink("cbs", session, address, properties);
await link.OpenAsync(timeoutHelper.RemainingTime()).ConfigureAwait(false);
AmqpTrace.Provider.AmqpOpenEntitySucceeded(this, link.Name, address);
return(link);
}
catch (Exception exception)
{
if (this.connection.IsClosing())
{
throw new OperationCanceledException("Connection is closing or closed.", exception);
}
lastException = exception;
AmqpTrace.Provider.AmqpOpenEntityFailed(this, this.GetType().Name, address, exception);
}
await Task.Delay(1000).ConfigureAwait(false);
}
link?.Abort();
session?.SafeClose();
throw new TimeoutException(AmqpResources.GetString(AmqpResources.AmqpTimeout, timeout, address), lastException);
}
public void AttachLink(AmqpLink link)
{
Fx.Assert(link.Session == this, "The link is not owned by this session.");
link.Closed += onLinkClosed;
lock (this.ThisLock)
{
if (this.links.ContainsKey(link.Name))
{
throw new AmqpException(AmqpErrorCode.ResourceLocked, AmqpResources.GetString(AmqpResources.AmqpLinkNameInUse, link.Name, this.LocalChannel));
}
this.links.Add(link.Name, link);
link.LocalHandle = this.linksByLocalHandle.Add(link);
}
AmqpTrace.Provider.AmqpAttachLink(this.connection, this, link, link.LocalHandle.Value, link.RemoteHandle ?? 0u, link.Name, link.IsReceiver ? "receiver" : "sender");
}
void OnReceiveOpen(Open open)
{
StateTransition stateTransition = this.TransitState("R:OPEN", StateTransition.ReceiveOpen);
uint peerIdleTimeout = open.IdleTimeOut();
if (peerIdleTimeout < this.Settings.MinIdleTimeout)
{
this.CompleteOpen(false,
new AmqpException(AmqpErrorCode.NotAllowed, AmqpResources.GetString(AmqpResources.AmqpIdleTimeoutNotSupported, peerIdleTimeout, this.Settings.MinIdleTimeout)));
return;
}
this.Negotiate(open);
this.NotifyOpening(open);
if (stateTransition.To == AmqpObjectState.OpenReceived)
{
this.SendOpen();
}
if (this.isInitiator)
{
// check if open returned an error right away
Error openError = null;
if (open.Properties != null && open.Properties.TryGetValue <Error>(AmqpConstants.OpenErrorName, out openError))
{
this.CompleteOpen(stateTransition.From == AmqpObjectState.Start, new AmqpException(openError));
return;
}
}
uint myIdleTimeout = this.Settings.IdleTimeOut();
peerIdleTimeout = open.IdleTimeOut();
if (peerIdleTimeout != uint.MaxValue || myIdleTimeout != uint.MaxValue)
{
this.heartBeat = HeartBeat.Initialize(this, myIdleTimeout, peerIdleTimeout);
}
this.CompleteOpen(stateTransition.From == AmqpObjectState.Start, null);
}
public void Add(uint handle, T value)
{
if (handle > this.maxHandle)
{
throw new AmqpException(AmqpErrorCode.ResourceLimitExceeded, AmqpResources.GetString(AmqpResources.AmqpHandleExceeded, this.maxHandle));
}
int index = (int)handle;
if (index >= this.handleArray.Length)
{
int capacity = UpperPowerOfTwo(this.handleArray.Length, index);
this.GrowHandleArray(capacity);
}
else if (this.handleArray[index] != null)
{
throw new AmqpException(AmqpErrorCode.HandleInUse, AmqpResources.GetString(AmqpResources.AmqpHandleInUse, handle, this.handleArray[index]));
}
this.handleArray[(int)handle] = value;
this.count++;
}
internal static AmqpDescribed CreateAmqpDescribed(
ByteBuffer buffer,
Dictionary <string, Func <AmqpDescribed> > byName,
Dictionary <ulong, Func <AmqpDescribed> > byCode)
{
FormatCode formatCode = AmqpEncoding.ReadFormatCode(buffer);
if (formatCode == FormatCode.Null)
{
return(null);
}
EncodingBase.VerifyFormatCode(formatCode, buffer.Offset, FormatCode.Described);
Func <AmqpDescribed> knownTypeCtor = null;
formatCode = AmqpEncoding.ReadFormatCode(buffer);
if (formatCode == FormatCode.Symbol8 || formatCode == FormatCode.Symbol32)
{
AmqpSymbol name = SymbolEncoding.Decode(buffer, formatCode);
byName.TryGetValue(name.Value, out knownTypeCtor);
}
else if (formatCode == FormatCode.ULong0 || formatCode == FormatCode.ULong || formatCode == FormatCode.SmallULong)
{
ulong code = ULongEncoding.Decode(buffer, formatCode).Value;
byCode.TryGetValue(code, out knownTypeCtor);
}
if (knownTypeCtor == null)
{
throw AmqpEncoding.GetEncodingException(AmqpResources.GetString(AmqpResources.AmqpInvalidFormatCode, formatCode, buffer.Offset));
}
AmqpDescribed value = knownTypeCtor();
return(value);
}
protected override void OnProtocolHeader(ProtocolHeader header)
{
#if DEBUG
header.Trace(false);
AmqpTrace.Provider.AmqpLogOperationVerbose(this, TraceOperation.Receive, header);
#endif
this.heartBeat.OnReceive();
if (this.UsageMeter != null)
{
this.UsageMeter.OnRead(this, 0, header.EncodeSize);
}
this.TransitState("R:HDR", StateTransition.ReceiveHeader);
Exception exception = null;
if (this.isInitiator)
{
if (!this.initialHeader.Equals(header))
{
exception = new AmqpException(AmqpErrorCode.NotImplemented, AmqpResources.GetString(AmqpResources.AmqpProtocolVersionNotSupported, this.initialHeader.ToString(), header.ToString()));
}
}
else
{
ProtocolHeader supportedHeader = this.amqpSettings.GetSupportedHeader(header);
this.SendProtocolHeader(supportedHeader);
if (!supportedHeader.Equals(header))
{
exception = new AmqpException(AmqpErrorCode.NotImplemented, AmqpResources.GetString(AmqpResources.AmqpProtocolVersionNotSupported, this.initialHeader.ToString(), header.ToString()));
}
}
if (exception != null)
{
this.CompleteOpen(false, exception);
}
}
static Exception ConvertToException(int statusCode, string statusDescription)
{
Exception exception;
if (Enum.IsDefined(typeof(AmqpResponseStatusCode), statusCode))
{
AmqpResponseStatusCode amqpResponseStatusCode = (AmqpResponseStatusCode)statusCode;
switch (amqpResponseStatusCode)
{
case AmqpResponseStatusCode.BadRequest:
exception = new AmqpException(AmqpErrorCode.InvalidField, AmqpResources.GetString(AmqpResources.AmqpPutTokenFailed, statusCode, statusDescription));
break;
case AmqpResponseStatusCode.NotFound:
exception = new AmqpException(AmqpErrorCode.NotFound, AmqpResources.GetString(AmqpResources.AmqpPutTokenFailed, statusCode, statusDescription));
break;
case AmqpResponseStatusCode.Forbidden:
exception = new AmqpException(AmqpErrorCode.TransferLimitExceeded, AmqpResources.GetString(AmqpResources.AmqpPutTokenFailed, statusCode, statusDescription));
break;
case AmqpResponseStatusCode.Unauthorized:
exception = new AmqpException(AmqpErrorCode.UnauthorizedAccess, AmqpResources.GetString(AmqpResources.AmqpPutTokenFailed, statusCode, statusDescription));
break;
default:
exception = new AmqpException(AmqpErrorCode.InvalidField, AmqpResources.GetString(AmqpResources.AmqpPutTokenFailed, statusCode, statusDescription));
break;
}
}
else
{
exception = new AmqpException(AmqpErrorCode.InvalidField, AmqpResources.GetString(AmqpResources.AmqpPutTokenFailed, statusCode, statusDescription));
}
return(exception);
}
static Error ScanValueSection(byte formatCode, ByteBuffer buffer, int depth = 0)
{
if (formatCode == FormatCode.Described)
{
if (depth > 10)
{
// protection for stack overflow
return(GetDecodeError(AmqpResources.GetString(Resources.AmqpInvalidFormatCode, formatCode, buffer.Offset)));
}
Error error = ScanValueSection(AmqpEncoding.ReadFormatCode(buffer), buffer, depth + 1);
if (error != null)
{
return(error);
}
formatCode = AmqpEncoding.ReadFormatCode(buffer);
}
uint size;
if (formatCode >= FormatCode.Binary8)
{
// variable width
size = (formatCode & 0x10) == 0 ?
AmqpBitConverter.ReadUByte(buffer) :
AmqpBitConverter.ReadUInt(buffer);
}
else
{
// fixed width
size = (uint)((1 << ((formatCode >> 4) - 4)) >> 1);
}
return(AdvanceBuffer(buffer, size));
}
/// <summary>
/// Attaches a link to the session. The link is assigned a local handle on success.
/// </summary>
/// <param name="link">The link to attach.</param>
public void AttachLink(AmqpLink link)
{
Fx.Assert(link.Session == this, "The link is not owned by this session.");
lock (this.ThisLock)
{
if (this.IsClosing())
{
throw new InvalidOperationException(AmqpResources.GetString(AmqpResources.AmqpIllegalOperationState, "attach", this.State));
}
if (this.links.ContainsKey(link.Name))
{
throw new AmqpException(AmqpErrorCode.ResourceLocked, AmqpResources.GetString(AmqpResources.AmqpLinkNameInUse, link.Name, this.LocalChannel));
}
link.Closed += onLinkClosed;
this.links.Add(link.Name, link);
link.LocalHandle = this.linksByLocalHandle.Add(link);
}
AmqpTrace.Provider.AmqpAttachLink(this, link, link.LocalHandle.Value,
link.RemoteHandle ?? 0u, link.Name, link.IsReceiver ? "receiver" : "sender", link.Settings.Source, link.Settings.Target);
}
void NotifyClosed()
{
// Make sure no pending async result is leaked
if (this.pendingOpen != null)
{
this.CompleteOpen(false, this.TerminalException ?? new OperationCanceledException(AmqpResources.GetString(AmqpResources.AmqpObjectAborted, this.name)));
}
if (this.pendingClose != null)
{
this.CompleteClose(false, this.TerminalException ?? new OperationCanceledException(AmqpResources.GetString(AmqpResources.AmqpObjectAborted, this.name)));
}
EventHandler closed = null;
lock (this.thisLock)
{
if (!this.closedHandlerInvoked)
{
closed = this.Closed;
this.closedHandlerInvoked = true;
}
}
if (closed != null)
{
closed(this, EventArgs.Empty);
}
}
static bool TryReadSectionInfo(ByteBuffer buffer, out SectionInfo info, out Error error)
{
info = default(SectionInfo);
FormatCode formatCode = AmqpEncoding.ReadFormatCode(buffer);
if (formatCode != FormatCode.Described)
{
error = GetDecodeError(AmqpResources.GetString(Resources.AmqpInvalidFormatCode, formatCode, buffer.Offset - FixedWidth.FormatCode));
return(false);
}
ulong code = ulong.MaxValue;
formatCode = AmqpEncoding.ReadFormatCode(buffer);
switch (formatCode)
{
case FormatCode.SmallULong:
code = AmqpBitConverter.ReadUByte(buffer);
break;
case FormatCode.ULong:
code = AmqpBitConverter.ReadULong(buffer);
break;
case FormatCode.Symbol32:
case FormatCode.Symbol8:
// symbol name should be seldom used so do not optimize for it
AmqpSymbol name = SymbolEncoding.Decode(buffer, formatCode);
for (int i = 0; i < MessageSections.Length; i++)
{
if (MessageSections[i].Name.Equals(name.Value))
{
code = MessageSections[i].Code;
break;
}
}
if (code == ulong.MaxValue)
{
error = GetDecodeError(AmqpResources.GetString(Resources.AmqpInvalidMessageSectionCode, name));
return(false);
}
break;
default:
error = GetDecodeError(AmqpResources.GetString(Resources.AmqpInvalidFormatCode, formatCode, buffer.Offset - FixedWidth.FormatCode));
return(false);
}
int index = (int)(code - MessageSections[0].Code);
if (index < 0 || index >= MessageSections.Length)
{
error = GetDecodeError(AmqpResources.GetString(Resources.AmqpInvalidMessageSectionCode, code));
return(false);
}
info = MessageSections[index];
error = null;
return(true);
}
static void OnHeartBeatTimer(object state)
{
TimedHeartBeat thisPtr = (TimedHeartBeat)state;
if (thisPtr.connection.IsClosing())
{
return;
}
bool wasActive = false;
DateTime capturedLastActive = thisPtr.lastSendTime;
DateTime now = DateTime.UtcNow;
DateTime scheduleAfterTime = now;
if (now.Subtract(capturedLastActive) < TimeSpan.FromMilliseconds(thisPtr.heartBeatInterval))
{
wasActive = true;
scheduleAfterTime = capturedLastActive;
}
try
{
if (!wasActive)
{
thisPtr.connection.SendCommand(null, 0, null);
}
thisPtr.heartBeatTimer.Change(scheduleAfterTime.AddMilliseconds(thisPtr.heartBeatInterval).Subtract(now), Timeout.InfiniteTimeSpan);
}
catch (Exception exception)
{
if (Fx.IsFatal(exception))
{
throw;
}
AmqpTrace.Provider.AmqpLogError(thisPtr.connection, "OnHeartBeatTimer", exception.Message);
}
// idle timeout can be different for the peers. but instead of creating another timer,
// we use the sending timer to also check if we have received anything just in case
uint thisIdletimeout = thisPtr.connection.Settings.IdleTimeOut();
if (thisIdletimeout < uint.MaxValue &&
now > thisPtr.lastReceiveTime.AddMilliseconds((int)thisIdletimeout))
{
AmqpTrace.Provider.AmqpLogError(thisPtr.connection, "OnHeartBeatTimer", AmqpResources.GetString(AmqpResources.AmqpTimeout, thisIdletimeout, thisPtr.connection));
thisPtr.connection.SafeClose(new AmqpException(AmqpErrorCode.ConnectionForced, AmqpResources.AmqpConnectionInactive));
}
}
protected override IEnumerator <AsyncStep> GetAsyncSteps()
{
string address = CbsConstants.CbsAddress;
while (this.RemainingTime() > TimeSpan.Zero)
{
try
{
AmqpSessionSettings sessionSettings = new AmqpSessionSettings()
{
Properties = new Fields()
};
this.session = new AmqpSession(this.connection, sessionSettings, this);
connection.AddSession(session, null);
}
catch (InvalidOperationException exception)
{
this.Complete(exception);
yield break;
}
yield return(this.CallAsync(
(thisPtr, t, c, s) => thisPtr.session.BeginOpen(t, c, s),
(thisPtr, r) => thisPtr.session.EndOpen(r),
ExceptionPolicy.Continue));
Exception lastException = this.LastAsyncStepException;
if (lastException != null)
{
AmqpTrace.Provider.AmqpOpenEntityFailed(this.connection, this.session, string.Empty, address, lastException.Message);
this.session.Abort();
this.Complete(lastException);
yield break;
}
Fields properties = new Fields();
properties.Add(CbsConstants.TimeoutName, (uint)this.RemainingTime().TotalMilliseconds);
this.Link = new RequestResponseAmqpLink("cbs", this.session, address, properties);
yield return(this.CallAsync(
(thisPtr, t, c, s) => thisPtr.Link.BeginOpen(t, c, s),
(thisPtr, r) => thisPtr.Link.EndOpen(r),
ExceptionPolicy.Continue));
lastException = this.LastAsyncStepException;
if (lastException != null)
{
AmqpTrace.Provider.AmqpOpenEntityFailed(this.connection, this.Link, this.Link.Name, address, lastException.Message);
this.session.SafeClose();
this.Link = null;
this.Complete(lastException);
yield break;
}
AmqpTrace.Provider.AmqpOpenEntitySucceeded(this.connection, this.Link, this.Link.Name, address);
yield break;
}
if (this.session != null)
{
this.session.SafeClose();
}
this.Complete(new TimeoutException(AmqpResources.GetString(AmqpResources.AmqpTimeout, this.OriginalTimeout, address)));
}