internal Publish(FixedHeader header, byte[] payload)
: base(header)
{
var payloadLength = payload.Length;
m_header = new VariableHeader <PublishHeaderData>();
VariableHeader = m_header;
// get topic length
var topicLength = System.Net.IPAddress.NetworkToHostOrder(BitConverter.ToInt16(payload, 0));
payloadLength -= 2;
// get topic name
m_header.HeaderData.TopicName = Encoding.UTF8.GetString(payload, 2, topicLength);
payloadLength -= topicLength;
if (header.QoS > 0)
{
// pull message ID
m_header.HeaderData.MessageID = (ushort)System.Net.IPAddress.NetworkToHostOrder(BitConverter.ToInt16(payload, payload.Length - payloadLength));
payloadLength -= 2;
}
m_data = new byte[payloadLength];
Buffer.BlockCopy(payload, payload.Length - payloadLength, m_data, 0, m_data.Length);
}
public Connect(string userName, string password, string clientIdentifier)
: base(MessageType.Connect)
{
m_header = new VariableHeader <ConnectHeaderData>();
VariableHeader = m_header;
if (!userName.IsNullOrEmpty())
{
UserName = userName;
m_header.HeaderData.HasUserName = true;
}
if (!password.IsNullOrEmpty())
{
Password = password;
m_header.HeaderData.HasPassword = true;
}
//delete by 赵雪峰 20160908
//Validate
// .Begin()
// .IsNotNull(clientIdentifier)
// .IsGreaterThanOrEqualTo(clientIdentifier.Length, 1)
// .IsLessThanOrEqualTo(clientIdentifier.Length, 23)
// .Check();
Validate
.Begin()
.IsNotNull(clientIdentifier)
.IsGreaterThanOrEqualTo(clientIdentifier.Length, 1)
.IsLessThanOrEqualTo(clientIdentifier.Length, 64)
.Check();
ClientIdentifier = clientIdentifier;
}
public byte[] Serialize()
{
var data = new List <byte>();
var payload = this.Payload;
var length = payload == null ? 0 : payload.Length;
byte[] variableHeader = null;
if (VariableHeader != null)
{
variableHeader = VariableHeader.Serialize();
length += variableHeader.Length;
}
FixedHeader.RemainingLength = length;
data.AddRange(FixedHeader.Serialize());
if (variableHeader != null)
{
data.AddRange(variableHeader);
}
if (payload != null)
{
data.AddRange(payload);
}
return(data.ToArray());
}
public Subscribe(Subscription[] subscriptions, ushort messageID)
: base(MessageType.Subscribe, QoS.AcknowledgeDelivery, false, false)
{
Validate
.Begin()
.IsNotNull(subscriptions)
//.IsGreaterThanOrEqualTo(1, subscriptions.Length) modify by 赵雪峰 20160910
.IsGreaterThanOrEqualTo(subscriptions.Length, 1)
.Check();
m_header = new VariableHeader <MessageIDHeaderData>();
m_header.HeaderData.MessageID = messageID;
VariableHeader = m_header;
m_subscriptions = subscriptions;
}
public Unsubscribe(string[] topics, ushort messageID)
: base(MessageType.Unsubscribe, QoS.AcknowledgeDelivery, false, false)
//: base(MessageType.Subscribe, QoS.AcknowledgeDelivery, false, false)modify by 赵雪峰 20160910
{
Validate
.Begin()
.IsNotNull(topics)
//.IsGreaterThanOrEqualTo(1, topics.Length) modify by 赵雪峰 20160910
.IsGreaterThanOrEqualTo(topics.Length, 1)
.Check();
m_header = new VariableHeader <MessageIDHeaderData>();
m_header.HeaderData.MessageID = messageID;
VariableHeader = m_header;
m_topics = topics;
}
public Publish(string topicName, byte[] messageData, ushort messageID, QoS qos, bool retain)
: base(MessageType.Publish, qos, retain, false)
{
m_header = new VariableHeader <PublishHeaderData>();
VariableHeader = m_header;
Validate
.Begin()
.IsNotNullOrEmpty(topicName)
.IsNotNull(messageData)
.Check();
m_header.HeaderData.TopicName = topicName;
if (messageID != 0)
{
m_header.HeaderData.MessageID = messageID;
}
m_data = messageData;
}
private Message DeserializeAndDispatchMessage(byte[] headerdata, byte[] payload)
{
try
{
var header = FixedHeader.Deserialize(headerdata);
TracingDebug("Received: " + header.MessageType.ToString());
switch (header.MessageType)
{
case MessageType.ConnectAck:
var connect = new ConnectAck(header, payload);
IsConnected = true;
autoResetConnEvent.Set();
return(connect);
case MessageType.PingResponse:
return(new PingResponse(header, payload));
case MessageType.SubscribeAck:
break;
case MessageType.UnsubscribeAck:
break;
case MessageType.Publish:
var pub = new Publish(header, payload);
var handler = MessageReceived;
TracingDebug("Topic=" + pub.Topic);
if (handler != null)
{
//handler(pub.Topic, pub.QoS, pub.Payload);
handler(pub.Topic, pub.Payload);
}
if (header.QoS == QoS.AcknowledgeDelivery)
{
var ackMsg = new PublishAck();
var m_header = new VariableHeader <MessageIDHeaderData>();
m_header.HeaderData.MessageID = (ushort)(pub.m_header.HeaderData.MessageID);
ackMsg.VariableHeader = m_header;
//ackMsg.MessageIdentifier = pubMsg.MessageIdentifier;
Send(ackMsg);
TracingDebug("Send PublishAck: MessageID=" + m_header.HeaderData.MessageID);
}
break;
case MessageType.PublishAck:
// TODO: handle this
break;
case MessageType.Connect:
// server connecting to us
throw new NotSupportedException();
default:
throw new NotSupportedException();
}
return(null);
}
catch (Exception e)
{
TracingDebug("DeserializeAndDispatchMessage:" + e.Message);
return(null);
}
}