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104 lines
3.3 KiB
C
104 lines
3.3 KiB
C
/*
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* Copyright (C) 2015-2018 Alibaba Group Holding Limited
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*/
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#ifndef MQTTCONNECT_H_
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#define MQTTCONNECT_H_
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#if !defined(DLLImport)
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#define DLLImport
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#endif
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#if !defined(DLLExport)
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#define DLLExport
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#endif
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#define MQTT_CONN_FLAG_USER_NAME (0x80)
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#define MQTT_CONN_FLAG_PASSWORD (0x40)
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#define MQTT_CONN_FLAG_WILL_RETAIN (0x20)
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#define MQTT_CONN_FLAG_WILL_QOS (0x18)
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#define MQTT_CONN_FLAG_WILL_FLAG (0x04)
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#define MQTT_CONN_FLAG_CLEAN_SESSION (0x02)
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typedef union {
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unsigned char all; /**< all connect flags */
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} MQTTConnectFlags; /**< connect flags byte */
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/**
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* Defines the MQTT "Last Will and Testament" (LWT) settings for
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* the connect packet.
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*/
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typedef struct {
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/** The eyecatcher for this structure. must be MQTW. */
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char struct_id[4];
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/** The version number of this structure. Must be 0 */
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int struct_version;
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/** The LWT topic to which the LWT message will be published. */
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MQTTString topicName;
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/** The LWT payload. */
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MQTTString message;
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/**
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* The retained flag for the LWT message (see MQTTAsync_message.retained).
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*/
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unsigned char retained;
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/**
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* The quality of service setting for the LWT message (see
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* MQTTAsync_message.qos and @ref qos).
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*/
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char qos;
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} MQTTPacket_willOptions;
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#define MQTTPacket_willOptions_initializer { {'M', 'Q', 'T', 'W'}, 0, {NULL, {0, NULL}}, {NULL, {0, NULL}}, 0, 0 }
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typedef struct {
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/** The eyecatcher for this structure. must be MQTC. */
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char struct_id[4];
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/** The version number of this structure. Must be 0 */
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int struct_version;
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/** Version of MQTT to be used. 3 = 3.1 4 = 3.1.1
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*/
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unsigned char MQTTVersion;
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MQTTString clientID;
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unsigned short keepAliveInterval; /* 单位s */
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unsigned char cleansession;
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unsigned char willFlag;
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MQTTPacket_willOptions will;
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MQTTString username;
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MQTTString password;
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} MQTTPacket_connectData;
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typedef union {
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unsigned char all; /**< all connack flags */
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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struct {
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unsigned int sessionpresent : 1; /**< session present flag */
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unsigned int : 7; /**< unused */
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} bits;
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#else
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struct {
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unsigned int : 7; /**< unused */
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unsigned int sessionpresent : 1; /**< session present flag */
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} bits;
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#endif
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} MQTTConnackFlags; /**< connack flags byte */
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#define MQTTPacket_connectData_initializer { {'M', 'Q', 'T', 'C'}, 0, 4, {NULL, {0, NULL}}, CONFIG_MQTT_KEEPALIVE_INTERVAL_MIN, 1, 0, \
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MQTTPacket_willOptions_initializer, {NULL, {0, NULL}}, {NULL, {0, NULL}} }
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DLLExport int MQTTSerialize_connect(unsigned char *buf, int buflen, MQTTPacket_connectData *options);
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DLLExport int MQTTDeserialize_connect(MQTTPacket_connectData *data, unsigned char *buf, int len);
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DLLExport int MQTTSerialize_connack(unsigned char *buf, int buflen, unsigned char connack_rc,
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unsigned char sessionPresent);
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DLLExport int MQTTDeserialize_connack(unsigned char *sessionPresent, unsigned char *connack_rc, unsigned char *buf,
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int buflen);
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DLLExport int MQTTSerialize_disconnect(unsigned char *buf, int buflen);
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DLLExport int MQTTSerialize_pingreq(unsigned char *buf, int buflen);
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#endif /* MQTTCONNECT_H_ */
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