support mqtt3.1

-)remain length support >1 byte
-)swicth protocol from 3 to 4

Author: 于家鹏

MQTTClient_AS3/src/com/godpaper/mqtt/as3/core/MQTT_Protocol.as

@@ -92,6 +92,7 @@ package com.godpaper.mqtt.as3.core
 		protected var qos:uint;
 		protected var retain:uint;
 		protected var remainingLength:uint;
+		protected var remainPosition:uint;
 
 		///* stores the will of the client {willFlag,willQos,willRetainFlag} */
 		public static var WILL:Array;
@@ -198,7 +199,20 @@ package com.godpaper.mqtt.as3.core
 
 			this.position = 0;
 			this.writeByte(value);
-			this.writeByte(remainingLength);
+			var le:uint = remainingLength;
+			var digit:uint = 0;
+			do {
+				digit = le % 128;
+				le = le / 128;
+				if(le > 0 ){
+					digit = digit| 0x80;
+				}
+				this.writeByte(digit);
+
+			}while(le > 0);
+			this.remainPosition = this.position;
+
+			//this.writeByte(remainingLength);
 			this.readBytes(fixHead);
 
 			type = value & 0xF0;
@@ -207,6 +221,7 @@ package com.godpaper.mqtt.as3.core
 			retain = value & 0x01;
 		}
 
+
 		public function writeMessageValue(value:*):void//Variable Head
 		{
 			this.position = 2;
@@ -220,11 +235,25 @@ package com.godpaper.mqtt.as3.core
 			this.position = 0;
 			this.writeType(input.readUnsignedByte());
 			//get VarHead and Payload use RemainingLength
-			remainingLength = input.readUnsignedByte();
+
+			//remainingLength = input.readUnsignedByte();
 
-			input.readBytes(this, 2, remainingLength);
-			serialize();
+			//input.readBytes(this, 2, remainingLength);
+
+			var multiplier :uint = 1;
+			var remainLength:uint = 0;
+			do 
+			{
+				var le:uint = input.readUnsignedByte();
+				remainLength += (le & 127) * multiplier;
+				multiplier *= 128;
+				
+			}
+			while ((le & 128) != 0);
+			remainingLength = remainLength;
 			writeMessageType( type + (dup << 3) + (qos << 1) + retain );
+			input.readBytes(this, this.remainPosition, remainingLength);
+			serialize();
 		}
 
 		public function readMessageType():ByteArray
@@ -256,9 +285,9 @@ package com.godpaper.mqtt.as3.core
 			payLoad = new ByteArray();
 
 			this.position = 0;
-			this.readBytes(fixHead, 0, 2);
+			this.readBytes(fixHead, 0, this.remainPosition);
 
-			this.position = 2;
+			this.position = this.remainPosition;
 			switch( type ){
 				case CONNECT://Remaining Length is the length of the variable header (12 bytes) and the length of the Payload
 					this.readBytes(varHead, 0 , 12);
@@ -268,7 +297,7 @@ package com.godpaper.mqtt.as3.core
 					break;
 				case PUBLISH://Remaining Length is the length of the variable header plus the length of the payload
 					var index:int = (this.readUnsignedByte() << 8) + this.readUnsignedByte();//the length of variable header
-					this.position = 2;
+					this.position = this.remainPosition;
 					this.readBytes(varHead, 0 , index + (qos?4:2));
 					this.readBytes(payLoad);
 

MQTTClient_AS3/src/com/godpaper/mqtt/as3/impl/MQTTSocket.as

@@ -217,7 +217,7 @@ package com.godpaper.mqtt.as3.impl
 		 * 
 		 */		
 //		public function MQTTSocket(host:String=null, port:int=1883, topicname:String=null, clientid:String=null, username:String=null, password:String=null,willRetain:Boolean=true,willQos:Boolean=true,willFlag:Boolean=true,cleanSession:Boolean=true)
-		public function MQTTSocket(host:String=null, port:int=1883,username:String=null, password:String=null, topicname:String=null, clientid:String=null, will:Boolean=true,cleanSession:Boolean=true)
+		public function MQTTSocket(host:String=null, port:int=1883,username:String=null, password:String=null, topicname:String=null, clientid:String=null, will:Boolean=false,cleanSession:Boolean=false)
 		{
 			//parameters store
 			if (host)
@@ -483,14 +483,12 @@ package com.godpaper.mqtt.as3.impl
 				this.connectMessage=new MQTT_Protocol();
 				var bytes:ByteArray=new ByteArray();
 				bytes.writeByte(0x00); //0
-				bytes.writeByte(0x06); //6
+				bytes.writeByte(0x04); //6
 				bytes.writeByte(0x4d); //M
 				bytes.writeByte(0x51); //Q
-				bytes.writeByte(0x49); //I
-				bytes.writeByte(0x73); //S
-				bytes.writeByte(0x64); //D
-				bytes.writeByte(0x70); //P
-				bytes.writeByte(0x03); //Protocol version = 3
+				bytes.writeByte(0x54); //T
+				bytes.writeByte(0x54); //T
+				bytes.writeByte(0x04); //Protocol version = 3
 				//Connect flags
 				var type:int=0;
 				if (cleanSession)
@@ -707,20 +705,20 @@ package com.godpaper.mqtt.as3.impl
 			//Variable header
 			//Payload
 			//Actions
-			var varHead:ByteArray=packet.readMessageValue();
+			var varHead:ByteArray = packet.readMessageValue();
 			var length:uint = (varHead.readUnsignedByte() << 8) + varHead.readUnsignedByte();
 			var topicName:String = varHead.readMultiByte(length, "utf");
 			if( packet.readQoS() ){
 				var messageId:uint = (varHead.readUnsignedByte() << 8) + varHead.readUnsignedByte();
 				LOG.info("Publish Message ID {0}", messageId);
 			}
 			var payLoad:ByteArray = packet.readPayLoad();
-			length = (payLoad.readUnsignedByte() << 8) + payLoad.readUnsignedByte();
-			if( length > payLoad.length ){
-				length = payLoad.length;
-				payLoad.position = 0;
-			}
-			var topicContent:String = payLoad.readMultiByte(length, "utf");
+			//length = (payLoad.readUnsignedByte() << 8) + payLoad.readUnsignedByte();
+			//if( length > payLoad.length ){
+			//	length = payLoad.length;
+			//	payLoad.position = 0;
+			//}
+			var topicContent:String = payLoad.readMultiByte(payLoad.length, "utf-8");
 
 			LOG.info("Publish TopicName {0}", topicName);
 			LOG.info("Publish TopicContent {0}", topicContent);