--- mqtt/inc/Attic/aitmqtt.h	2011/11/07 08:47:16	1.1.1.1
+++ mqtt/inc/Attic/aitmqtt.h	2011/11/07 13:58:27	1.1.1.1.2.2
@@ -2,12 +2,100 @@
 #define __AITMQTT_H
 
 
+struct mqtthdr {
+	unsigned char	mqtt_retain : 1, 
+			mqtt_qos : 2,
+			mqtt_dup : 1,
+			mqtt_type : 4;
+	unsigned char	mqtt_len;
+};
+
+#define MQTT_TYPE_UNKNOWN	0	/* reserved */
+#define MQTT_TYPE_CONNECT	1	/* client request to connect to server */
+#define MQTT_TYPE_CONNACK	2	/* connect acknowledgment */
+#define MQTT_TYPE_PUBLISH	3	/* publish message */
+#define MQTT_TYPE_PUBACK	4	/* publish acknowledgment */
+#define MQTT_TYPE_PUBREC	5	/* publish received (assured delivery part 1) */
+#define MQTT_TYPE_PUBREL	6	/* publish release (assured delivery part 2) */
+#define MQTT_TYPE_PUBCOMP	7	/* publish complete (assured delivery part 3) */
+#define MQTT_TYPE_SUBSCRIBE	8	/* client subscribe request */
+#define MQTT_TYPE_SUBACK	9	/* subscribe acknowledgment */
+#define MQTT_TYPE_UNSUBSCRIBE	10	/* client unsubscribe request */
+#define MQTT_TYPE_UNSUBACK	11	/* unsubscribe acknowledgment */
+#define MQTT_TYPE_PINGREQ	12	/* PING request */
+#define MQTT_TYPE_PINGRESP	13	/* PING response */
+#define MQTT_TYPE_DISCONNECT	14	/* client is disconnecting */
+#define MQTT_TYPE_RESERVED	15	/* reserved */
+
+#define MQTT_FLAG_DUP		1	/* This flag is set when the client or server attempts to re-deliver 
+					   a PUBLISH, PUBREL, SUBSCRIBE or UNSUBSCRIBE message. 
+					   This applies to messages where the value of QoS is greater than 
+					   zero (0), and an acknowledgment is required. 
+					   When the DUP bit is set, the variable header includes a Message ID.
+
+					   The recipient should treat this flag as a hint as to whether 
+					   the message may have been previously received. 
+					   It should not be relied on to detect duplicates. */
+
+#define MQTT_QOS_ONCE		0	/* At most once, Fire and Forget, <=1 */
+#define MQTT_QOS_ACK		1	/* At least once, Acknowledged delivery, >=1 */
+#define MQTT_QOS_EXACTLY	2	/* Exactly once, Assured delivery, =1 */
+#define MQTT_QOS_RESERVED	3	/* reserved */
+
+#define MQTT_FLAG_RETAIN	1	/* This flag is only used on PUBLISH messages.
+
+					   When a client sends a PUBLISH to a server, 
+					   if the Retain flag is set (1), 
+					   the server should hold on to the message after it has been 
+					   delivered to the current subscribers.
+					   When a new subscription is established on a topic, 
+					   the last retained message on that topic should be sent to 
+					   the subscriber with the Retain flag set.
+					   If there is no retained message, nothing is sent
+					   This is useful where publishers send messages on a 
+					   "report by exception" basis, where it might be some time between messages. 
+					   This allows new subscribers to instantly receive data with the retained, 
+					   or Last Known Good, value.
+
+					   When a server sends a PUBLISH to a client as a result of 
+					   a subscription that already existed when the original PUBLISH arrived, 
+					   the Retain flag should not be set, regardless of the Retain flag 
+					   of the original PUBLISH. This allows a client to distinguish messages 
+					   that are being received because they were retained and those 
+					   that are being received "live".
+
+					   Retained messages should be kept over restarts of the server.
+					   A server may delete a retained message if it receives a message 
+					   with a zero-length payload and the Retain flag set on the same topic. */
+
+
 // -------------------------------------------------------
 // mqtt_GetErrno() Get error code of last operation
 inline int mqtt_GetErrno();
 // mqtt_GetError() Get error text of last operation
 inline const char *mqtt_GetError();
 // -------------------------------------------------------
+
+
+/*
+ * mqtt_encodeLen() Encode number to MQTT length field
+ * @num = number for encode
+ * return: -1 error or >-1 length
+ */
+inline unsigned int mqtt_encodeLen(unsigned int num);
+/*
+ * mqtt_decodeLen() Decode length from MQTT packet
+ * @len = length
+ * @n = sizeof bytes, if !=NULL
+ * return: -1 error, >-1 length of message
+ */
+inline unsigned int mqtt_decodeLen(unsigned int len, char *n);
+/*
+ * mqtt_sizeLen Return sizeof len field
+ * @len = length
+ * return: -1 error, >-1 sizeof len in bytes
+ */
+inline char mqtt_sizeLen(unsigned int len);
 
 
 #endif