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58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
#pragma once
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#include "net.h"
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#include "str.h"
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#define MQTT_CMD_CONNECT 1
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#define MQTT_CMD_CONNACK 2
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#define MQTT_CMD_PUBLISH 3
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#define MQTT_CMD_PUBACK 4
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#define MQTT_CMD_PUBREC 5
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#define MQTT_CMD_PUBREL 6
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#define MQTT_CMD_PUBCOMP 7
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#define MQTT_CMD_SUBSCRIBE 8
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#define MQTT_CMD_SUBACK 9
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#define MQTT_CMD_UNSUBSCRIBE 10
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#define MQTT_CMD_UNSUBACK 11
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#define MQTT_CMD_PINGREQ 12
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#define MQTT_CMD_PINGRESP 13
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#define MQTT_CMD_DISCONNECT 14
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#define MQTT_QOS(qos) ((qos) << 1)
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#define MQTT_GET_QOS(flags) (((flags) &0x6) >> 1)
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#define MQTT_SET_QOS(flags, qos) (flags) = ((flags) & ~0x6) | ((qos) << 1)
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struct mg_mqtt_opts {
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struct mg_str client_id;
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struct mg_str will_topic;
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struct mg_str will_message;
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uint8_t qos; // Quality of service
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bool will_retain; // Retain last will
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bool clean; // Use clean session, 0 or 1
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uint16_t keepalive; // Keep-alive timer in seconds
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};
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struct mg_mqtt_message {
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struct mg_str topic; // Parsed topic
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struct mg_str data; // Parsed message
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struct mg_str dgram; // Whole MQTT datagram, including headers
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uint16_t id; // Set for PUBACK, PUBREC, PUBREL, PUBCOMP, SUBACK, PUBLISH
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uint8_t cmd; // MQTT command, one of MQTT_CMD_*
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uint8_t qos; // Quality of service
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uint8_t ack; // Connack return code. 0 - success
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};
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struct mg_connection *mg_mqtt_connect(struct mg_mgr *, const char *url,
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struct mg_mqtt_opts *opts,
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mg_event_handler_t fn, void *fn_data);
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struct mg_connection *mg_mqtt_listen(struct mg_mgr *mgr, const char *url,
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mg_event_handler_t fn, void *fn_data);
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void mg_mqtt_pub(struct mg_connection *, struct mg_str *topic,
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struct mg_str *data);
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void mg_mqtt_sub(struct mg_connection *, struct mg_str *topic);
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int mg_mqtt_parse(const uint8_t *buf, size_t len, struct mg_mqtt_message *m);
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void mg_mqtt_send_header(struct mg_connection *, uint8_t cmd, uint8_t flags,
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uint32_t len);
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int mg_mqtt_next_sub(struct mg_mqtt_message *msg, struct mg_str *topic,
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uint8_t *qos, int pos);
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