internal override void OnTransfer(Delivery delivery, Transfer transfer, ByteBuffer buffer)
{
if (delivery == null)
{
delivery = this.deliveryCurrent;
AmqpBitConverter.WriteBytes(delivery.Buffer, buffer.Buffer, buffer.Offset, buffer.Length);
}
else
{
buffer.AddReference();
delivery.Buffer = buffer;
lock (this.ThisLock)
{
this.OnDelivery(transfer.DeliveryId);
}
}
if (!transfer.More)
{
this.deliveryCurrent = null;
delivery.Message = Message.Decode(delivery.Buffer);
Waiter waiter;
MessageCallback callback = this.onMessage;
lock (this.ThisLock)
{
waiter = (Waiter)this.waiterList.First;
if (waiter != null)
{
this.waiterList.Remove(waiter);
}
else if (callback == null)
{
this.receivedMessages.Add(new MessageNode()
{
Message = delivery.Message
});
return;
}
}
while (waiter != null)
{
if (waiter.Signal(delivery.Message))
{
return;
}
lock (this.ThisLock)
{
waiter = (Waiter)this.waiterList.First;
if (waiter != null)
{
this.waiterList.Remove(waiter);
}
else if (callback == null)
{
this.receivedMessages.Add(new MessageNode()
{
Message = delivery.Message
});
return;
}
}
}
Fx.Assert(waiter == null, "waiter must be null now");
Fx.Assert(callback != null, "callback must not be null now");
callback(this, delivery.Message);
}
else
{
this.deliveryCurrent = delivery;
}
}
/// <summary>
/// Sets the read position.
/// </summary>
/// <param name="seekPosition">Position to set.</param>
public void Seek(int seekPosition)
{
Fx.Assert(seekPosition >= 0, "seekPosition must not be negative.");
Fx.Assert((this.start + seekPosition) <= this.write, "seekPosition too large.");
this.read = this.start + seekPosition;
}
/// <summary>
/// Moves back the write position. As a result, length is decreased by size.
/// </summary>
/// <param name="size"></param>
public void Shrink(int size)
{
Fx.Assert(size >= 0 && size <= this.Length, "size must be positive and not greater then length.");
this.write -= size;
}
/// <summary>
/// Advances the write position. As a result, length is increased by size.
/// </summary>
/// <param name="size">Size to advance.</param>
public void Append(int size)
{
Fx.Assert(size >= 0, "size must be positive.");
Fx.Assert((this.write + size) <= this.end, "Append size too large.");
this.write += size;
}
/// <summary>
/// Advances the read position.
/// </summary>
/// <param name="size">Size to advance.</param>
public void Complete(int size)
{
Fx.Assert(size >= 0, "size must be positive.");
Fx.Assert((this.read + size) <= this.write, "Complete size too large.");
this.read += size;
}
void Parse(string address)
{
// amqp[s]://user:[email protected]:port/foo/bar
ParseState state = ParseState.Scheme;
int startIndex = 0;
for (int i = 0; i < address.Length; ++i)
{
switch (address[i])
{
case ':':
if (state == ParseState.Scheme)
{
this.Scheme = address.Substring(startIndex, i - startIndex);
state = ParseState.Slash1;
}
else if (state == ParseState.User)
{
this.User = address.Substring(startIndex, i - startIndex);
state = ParseState.Password;
startIndex = i + 1;
}
else if (state == ParseState.Host)
{
this.Host = address.Substring(startIndex, i - startIndex);
state = ParseState.Port;
startIndex = i + 1;
}
else
{
throw new AmqpException(ErrorCode.InvalidField,
Fx.Format(SRAmqp.InvalidAddressFormat));
}
break;
case '/':
if (state == ParseState.Slash1)
{
state = ParseState.Slash2;
}
else if (state == ParseState.Slash2)
{
state = ParseState.User;
startIndex = i + 1;
}
else if (state == ParseState.User || state == ParseState.Host)
{
this.Host = address.Substring(startIndex, i - startIndex);
state = ParseState.Path;
startIndex = i;
}
else if (state == ParseState.Port)
{
this.Port = int.Parse(address.Substring(startIndex, i - startIndex));
state = ParseState.Path;
startIndex = i;
}
else if (state == ParseState.Password)
{
this.Host = this.User;
this.User = null;
this.Port = int.Parse(address.Substring(startIndex, i - startIndex));
state = ParseState.Path;
startIndex = i;
}
break;
case '@':
if (state == ParseState.Password)
{
this.Password = address.Substring(startIndex, i - startIndex);
state = ParseState.Host;
startIndex = i + 1;
}
else
{
throw new AmqpException(ErrorCode.InvalidField,
Fx.Format(SRAmqp.InvalidAddressFormat));
}
break;
default:
break;
}
if (state == ParseState.Path)
{
this.Path = address.Substring(startIndex);
break;
}
}
// check state in case of no trailing slash
if (state == ParseState.User || state == ParseState.Host)
{
this.Host = address.Substring(startIndex);
}
else if (state == ParseState.Password)
{
this.Host = this.User;
this.User = null;
if (startIndex < address.Length - 1)
{
this.Port = int.Parse(address.Substring(startIndex));
}
}
else if (state == ParseState.Port)
{
this.Port = int.Parse(address.Substring(startIndex));
}
if (this.Password != null && this.Password.Length > 0)
{
this.Password = Uri.UnescapeDataString(this.Password);
}
if (this.User != null && this.User.Length > 0)
{
this.User = Uri.UnescapeDataString(this.User);
}
if (this.Host != null)
{
this.Host = Uri.UnescapeDataString(this.Host);
}
}
public void Start()
{
Fx.StartThread(this.PumpThread);
}
internal override void OnTransfer(Delivery delivery, Transfer transfer, ByteBuffer buffer)
{
if (!transfer.More)
{
Waiter waiter;
MessageCallback callback;
lock (this.ThisLock)
{
if (delivery == null)
{
// multi-transfer delivery
delivery = this.deliveryCurrent;
this.deliveryCurrent = null;
Fx.Assert(delivery != null, "Must have a delivery in the queue");
AmqpBitConverter.WriteBytes(delivery.Buffer, buffer.Buffer, buffer.Offset, buffer.Length);
delivery.Message = Message.Decode(delivery.Buffer);
delivery.Buffer = null;
}
else
{
// single tranfer delivery
this.OnDelivery(transfer.DeliveryId);
delivery.Message = Message.Decode(buffer);
}
callback = this.onMessage;
waiter = (Waiter)this.waiterList.First;
if (waiter != null)
{
this.waiterList.Remove(waiter);
}
if (waiter == null && callback == null)
{
this.receivedMessages.Add(new MessageNode()
{
Message = delivery.Message
});
return;
}
}
while (waiter != null)
{
if (waiter.Signal(delivery.Message))
{
this.OnDeliverMessage();
return;
}
lock (this.ThisLock)
{
waiter = (Waiter)this.waiterList.First;
if (waiter != null)
{
this.waiterList.Remove(waiter);
}
else if (callback == null)
{
this.receivedMessages.Add(new MessageNode()
{
Message = delivery.Message
});
return;
}
}
}
Fx.Assert(waiter == null, "waiter must be null now");
Fx.Assert(callback != null, "callback must not be null now");
callback(this, delivery.Message);
this.OnDeliverMessage();
}
else
{
lock (this.ThisLock)
{
if (delivery == null)
{
delivery = this.deliveryCurrent;
Fx.Assert(delivery != null, "Must have a current delivery");
AmqpBitConverter.WriteBytes(delivery.Buffer, buffer.Buffer, buffer.Offset, buffer.Length);
}
else
{
this.OnDelivery(transfer.DeliveryId);
delivery.Buffer = new ByteBuffer(buffer.Length * 2, true);
AmqpBitConverter.WriteBytes(delivery.Buffer, buffer.Buffer, buffer.Offset, buffer.Length);
this.deliveryCurrent = delivery;
}
}
}
}
void OnFrame(ushort channel, ulong code, List fields, ByteBuffer payload)
{
switch (code)
{
case 0x10ul: // open
Fx.DebugPrint(false, channel, "open", fields, "container-id", "host-name", "max-frame-size", "channel-max", "idle-time-out");
this.state |= OpenReceived;
// process open.idle-time-out if exists: final value is determined by the min of the local and the remote values
uint remoteValue = uint.MaxValue;
if (fields.Count >= 5 && fields[4] != null)
{
remoteValue = (uint)fields[4];
}
uint timeout = this.idleTimeout < remoteValue ? this.idleTimeout : remoteValue;
if (timeout < uint.MaxValue)
{
timeout -= 5000;
timeout = timeout > MaxIdleTimeout ? MaxIdleTimeout : timeout;
this.heartBeatTimer = new Timer(onHeartBeatTimer, this, (int)timeout, (int)timeout);
}
break;
case 0x11ul: // begin
Fx.DebugPrint(false, channel, "begin", fields, "remote-channel", "next-outgoing-id", "incoming-window", "outgoing-window", "handle-max");
this.nextIncomingId = (uint)fields[1];
this.outWindow = (uint)fields[2];
this.state |= BeginReceived;
break;
case 0x12ul: // attach
{
Fx.DebugPrint(false, channel, "attach", fields, "name", "handle", "role", "snd-mode", "rcv-mode", "source", "target");
Link link = null;
uint remoteHandle = (uint)fields[1];
Fx.AssertAndThrow(ErrorCode.ClientInvalidHandle, remoteHandle < this.links.Length);
lock (this)
{
for (int i = 0; i < this.links.Length; i++)
{
if (this.links[i] != null && this.links[i].Name.Equals(fields[0]))
{
link = this.links[i];
int index = (int)~link.RemoteHandle;
Fx.AssertAndThrow(ErrorCode.ClientInvalidHandle, index == i);
if (index != (int)remoteHandle)
{
Fx.AssertAndThrow(ErrorCode.ClientHandlInUse, this.links[(int)remoteHandle] == null);
this.links[(int)remoteHandle] = link;
this.links[i] = null;
}
break;
}
}
}
Fx.AssertAndThrow(ErrorCode.ClientLinkNotFound, link != null);
link.RemoteHandle = remoteHandle;
link.State |= AttachReceived;
link.OnAttach(fields);
break;
}
case 0x13ul: // flow
{
Fx.DebugPrint(false, channel, "flow", fields, "next-in-id", "in-window", "next-out", "out-window", "handle", "dc", "credit");
uint nextIncomingId = (uint)fields[0];
uint incomingWindow = (uint)fields[1];
lock (this)
{
this.outWindow = incomingWindow < uint.MaxValue ?
nextIncomingId + incomingWindow - this.nextOutgoingId :
uint.MaxValue;
}
if (fields[4] != null)
{
Link link = this.links[(uint)fields[4]];
Fx.AssertAndThrow(ErrorCode.ClientLinkNotFound, link != null);
link.OnFlow(fields);
}
break;
}
case 0x14ul: // transfer
{
lock (this)
{
this.nextOutgoingId++;
if (--this.inWindow == 0)
{
this.inWindow = DefaultWindowSize;
List flow = new List()
{
this.nextIncomingId, this.inWindow, this.nextOutgoingId, this.outWindow
};
this.WriteFrame(0, 0, 0x13, flow);
Fx.DebugPrint(true, 0, "flow", flow, "next-in-id", "in-window", "next-out", "out-window", "handle", "dc", "credit");
}
}
Link link = this.links[(uint)fields[0]];
Fx.AssertAndThrow(ErrorCode.ClientLinkNotFound, link != null);
((Receiver)link).OnTransfer(fields, payload);
break;
}
case 0x15ul: // disposition
{
Fx.DebugPrint(false, channel, "disposition", fields, "role", "first", "last");
bool role = (bool)fields[0];
uint first = (uint)fields[1];
uint last = fields[2] == null ? first : (uint)fields[2];
for (int i = 0; i < this.links.Length; i++)
{
Link link = this.links[i];
if (link != null && role != link.Role)
{
link.OnDisposition(first, last, fields[4] as DescribedValue);
}
}
break;
}
case 0x16ul: // detach
{
Fx.DebugPrint(false, channel, "detach", fields, "handle");
Link link = this.links[(uint)fields[0]];
Fx.AssertAndThrow(ErrorCode.ClientLinkNotFound, link != null);
link.State |= DetachReceived;
if ((link.State & DetachSent) == 0)
{
this.CloseLink(link);
this.RaiseErrorEvent(link, GetError(fields, 2));
}
break;
}
case 0x17ul: // end
Fx.DebugPrint(false, channel, "end", null);
this.state |= EndReceived;
if ((this.state & EndSent) == 0)
{
this.WriteFrame(0, 0, 0x17ul, new List());
Fx.DebugPrint(true, channel, "end", null);
this.ClearLinks();
}
break;
case 0x18ul: // close
Fx.DebugPrint(false, channel, "close", null);
this.state |= CloseReceived;
if ((this.state & CloseSent) == 0)
{
this.Close();
this.RaiseErrorEvent(null, GetError(fields, 0));
}
break;
default:
Fx.AssertAndThrow(ErrorCode.ClientInvalidCodeOnFrame, false);
break;
}
}
/// <summary>
/// Establish a connection and a session for the client.
/// </summary>
/// <param name="host">The network host name or IP address to connect.</param>
/// <param name="port">The port to connect.</param>
/// <param name="useSsl">If true, use secure socket.</param>
/// <param name="userName">If set, the user name for authentication.</param>
/// <param name="password">If set, the password for authentication.</param>
public void Connect(string host, int port, bool useSsl, string userName, string password)
{
this.transport = Connect(host, port, useSsl);
byte[] header = new byte[8] {
(byte)'A', (byte)'M', (byte)'Q', (byte)'P', 0, 1, 0, 0
};
byte[] retHeader;
if (userName != null)
{
header[4] = 3;
this.transport.Write(header, 0, 8);
Fx.DebugPrint(true, 0, "AMQP", new List {
string.Concat(header[5], header[6], header[7])
}, header[4]);
byte[] b1 = Encoding.UTF8.GetBytes(userName);
byte[] b2 = Encoding.UTF8.GetBytes(password ?? string.Empty);
byte[] b = new byte[1 + b1.Length + 1 + b2.Length];
Array.Copy(b1, 0, b, 1, b1.Length);
Array.Copy(b2, 0, b, b1.Length + 2, b2.Length);
List saslInit = new List()
{
new Symbol("PLAIN"), b
};
this.WriteFrame(1, 0, 0x41, saslInit);
Fx.DebugPrint(true, 0, "sasl-init", saslInit, "mechanism");
this.transport.Flush();
retHeader = this.ReadFixedSizeBuffer(8);
Fx.DebugPrint(false, 0, "AMQP", new List {
string.Concat(retHeader[5], retHeader[6], retHeader[7])
}, retHeader[4]);
Fx.AssertAndThrow(ErrorCode.ClientInitializeHeaderCheckFailed, AreHeaderEqual(header, retHeader));
List body = this.ReadFrameBody(1, 0, 0x40);
Fx.DebugPrint(false, 0, "sasl-mechanisms", body, "server-mechanisms");
Fx.AssertAndThrow(ErrorCode.ClientInitializeWrongBodyCount, body.Count > 0);
Symbol[] mechanisms = GetSymbolMultiple(body[0]);
Fx.AssertAndThrow(ErrorCode.ClientInitializeWrongSymbol, Array.IndexOf(mechanisms, new Symbol("PLAIN")) >= 0);
body = this.ReadFrameBody(1, 0, 0x44);
Fx.AssertAndThrow(ErrorCode.ClientInitializeWrongBodyCount, body.Count > 0);
Fx.DebugPrint(false, 0, "sasl-outcome", body, "code");
Fx.AssertAndThrow(ErrorCode.ClientInitializeSaslFailed, body[0].Equals((byte)0)); // sasl-outcome.code = OK
header[4] = 0;
}
this.transport.Write(header, 0, 8);
Fx.DebugPrint(true, 0, "AMQP", new List {
string.Concat(header[5], header[6], header[7])
}, header[4]);
// perform open
this.state |= OpenSent;
var open = new List()
{
Guid.NewGuid().ToString(), this.hostName ?? host, MaxFrameSize, (ushort)0
};
this.WriteFrame(0, 0, 0x10, open);
Fx.DebugPrint(true, 0, "open", open, "container-id", "host-name", "max-frame-size", "channel-max", "idle-time-out");
// perform begin
this.state |= BeginSent;
var begin = new List()
{
null, this.nextOutgoingId, this.inWindow, this.outWindow, (uint)(this.links.Length - 1)
};
this.WriteFrame(0, 0, 0x11, begin);
Fx.DebugPrint(true, 0, "begin", begin, "remote-channel", "next-outgoing-id", "incoming-window", "outgoing-window", "handle-max");
retHeader = this.ReadFixedSizeBuffer(8);
Fx.DebugPrint(false, 0, "AMQP", new List {
string.Concat(retHeader[5], retHeader[6], retHeader[7])
}, retHeader[4]);
Fx.AssertAndThrow(ErrorCode.ClientInitializeHeaderCheckFailed, AreHeaderEqual(header, retHeader));
new Thread(this.PumpThread).Start();
}
