MQTTConnectServer.c File Reference

#include "StackTrace.h"
#include "MQTTPacket.h"
#include <string.h>

Macros
#define	min(a, b)   ((a < b) ? a : b)

Functions
int	MQTTDeserialize_connect (MQTTPacket_connectData *data, unsigned char *buf, int len)
	Deserializes the supplied (wire) buffer into connect data structure. More...
int	MQTTPacket_checkVersion (MQTTString *protocol, int version)
	Validates MQTT protocol name and version combinations. More...
int	MQTTSerialize_connack (unsigned char *buf, int buflen, unsigned char connack_rc, unsigned char sessionPresent)
	Serializes the connack packet into the supplied buffer. More...

#define min	(		a,
			b
	)		((a < b) ? a : b)

Referenced by MQTTPacket_checkVersion().

int MQTTDeserialize_connect	(	MQTTPacket_connectData *	data,
		unsigned char *	buf,
		int	len
	)

Deserializes the supplied (wire) buffer into connect data structure.

Parameters

data	the connect data structure to be filled out
buf	the raw buffer data, of the correct length determined by the remaining length field
len	the length in bytes of the data in the supplied buffer

Returns

error code. 1 is success, 0 is failure

References MQTTConnectFlags::all, MQTTConnectFlags::bits, MQTTHeader::bits, MQTTHeader::byte, MQTTConnectFlags::cleansession, MQTTPacket_connectData::cleansession, MQTTPacket_connectData::clientID, CONNECT, FUNC_ENTRY, FUNC_EXIT_RC, header, MQTTPacket_connectData::keepAliveInterval, MQTTPacket_willOptions::message, MQTTPacket_checkVersion(), MQTTPacket_decodeBuf(), MQTTConnectFlags::password, MQTTPacket_connectData::password, MQTTPacket_willOptions::qos, readChar(), readInt(), readMQTTLenString(), MQTTPacket_willOptions::retained, MQTTPacket_willOptions::topicName, MQTTHeader::type, MQTTConnectFlags::username, MQTTPacket_connectData::username, MQTTConnectFlags::will, MQTTPacket_connectData::will, MQTTPacket_connectData::willFlag, MQTTConnectFlags::willQoS, and MQTTConnectFlags::willRetain.

Referenced by MQTTFormat_toServerString().

int MQTTPacket_checkVersion	(	MQTTString *	protocol,
		int	version
	)

Validates MQTT protocol name and version combinations.

Parameters

protocol	the MQTT protocol name as an MQTTString
version	the MQTT protocol version number, as in the connect packet

Returns

correct MQTT combination? 1 is true, 0 is false

References MQTTLenString::data, MQTTLenString::len, MQTTString::lenstring, and min.

Referenced by MQTTDeserialize_connect().

int MQTTSerialize_connack	(	unsigned char *	buf,
		int	buflen,
		unsigned char	connack_rc,
		unsigned char	sessionPresent
	)

Serializes the connack packet into the supplied buffer.

Parameters

buf	the buffer into which the packet will be serialized
buflen	the length in bytes of the supplied buffer
connack_rc	the integer connack return code to be used
sessionPresent	the MQTT 3.1.1 sessionPresent flag

Returns

serialized length, or error if 0

References MQTTConnackFlags::all, MQTTHeader::bits, MQTTConnackFlags::bits, MQTTHeader::byte, CONNACK, FUNC_ENTRY, FUNC_EXIT_RC, header, MQTTPACKET_BUFFER_TOO_SHORT, MQTTPacket_encode(), ptr, MQTTConnackFlags::sessionpresent, MQTTHeader::type, and writeChar().