1 files changed, 97 insertions, 0 deletions
diff --git a/mqtt_websockets/src/include/mqtt_ng.h b/mqtt_websockets/src/include/mqtt_ng.h
new file mode 100644
index 00000000..09668d09
--- /dev/null
+++ b/mqtt_websockets/src/include/mqtt_ng.h
@@ -0,0 +1,97 @@
+#include <stdint.h>
+#include <sys/types.h>
+#include <time.h>
+
+#include "ringbuffer.h"
+#include "common_public.h"
+
+#define MQTT_NG_MSGGEN_OK         0
+// MQTT_NG_MSGGEN_USER_ERROR means parameters given to this function
+// do not make sense or are out of MQTT specs
+#define MQTT_NG_MSGGEN_USER_ERROR  1
+#define MQTT_NG_MSGGEN_BUFFER_OOM  2
+#define MQTT_NG_MSGGEN_MSG_TOO_BIG 3
+
+struct mqtt_ng_client;
+
+/* Converts integer to MQTT Variable Byte Integer as per 1.5.5 of MQTT 5 specs
+ * @param input value to be converted
+ * @param output pointer to memory where output will be written to. Must allow up to 4 bytes to be written.
+ * @return number of bytes written to output or <= 0 if error in which case contents of output are undefined
+ */
+int uint32_to_mqtt_vbi(uint32_t input, char *output);
+
+struct mqtt_lwt_properties {
+    char *will_topic;
+    free_fnc_t will_topic_free;
+
+    void *will_message;
+    free_fnc_t will_message_free;
+    size_t will_message_size;
+
+    int will_qos;
+    int will_retain;
+};
+
+struct mqtt_auth_properties {
+    char *client_id;
+    free_fnc_t client_id_free;
+    char *username;
+    free_fnc_t username_free;
+    char *password;
+    free_fnc_t password_free;
+};
+
+int mqtt_ng_connect(struct mqtt_ng_client *client,
+                    struct mqtt_auth_properties *auth,
+                    struct mqtt_lwt_properties *lwt,
+                    uint8_t clean_start,
+                    uint16_t keep_alive);
+
+int mqtt_ng_publish(struct mqtt_ng_client *client,
+                    char *topic,
+                    free_fnc_t topic_free,
+                    void *msg,
+                    free_fnc_t msg_free,
+                    size_t msg_len,
+                    uint8_t publish_flags,
+                    uint16_t *packet_id);
+
+struct mqtt_sub {
+    char *topic;
+    free_fnc_t topic_free;
+    uint8_t options;
+};
+
+int mqtt_ng_subscribe(struct mqtt_ng_client *client, struct mqtt_sub *subscriptions, size_t subscription_count);
+
+int mqtt_ng_ping(struct mqtt_ng_client *client);
+
+typedef ssize_t (*mqtt_ng_send_fnc_t)(void *user_ctx, const void* buf, size_t len);
+
+struct mqtt_ng_init {
+    mqtt_wss_log_ctx_t log;
+    rbuf_t data_in;
+    mqtt_ng_send_fnc_t data_out_fnc;
+    void *user_ctx;
+
+    void (*puback_callback)(uint16_t packet_id);
+    void (*connack_callback)(void* user_ctx, int connack_reply);
+    void (*msg_callback)(const char *topic, const void *msg, size_t msglen, int qos);
+};
+
+struct mqtt_ng_client *mqtt_ng_init(struct mqtt_ng_init *settings);
+
+void mqtt_ng_destroy(struct mqtt_ng_client *client);
+
+int mqtt_ng_disconnect(struct mqtt_ng_client *client, uint8_t reason_code);
+
+int mqtt_ng_sync(struct mqtt_ng_client *client);
+
+time_t mqtt_ng_last_send_time(struct mqtt_ng_client *client);
+
+void mqtt_ng_set_max_mem(struct mqtt_ng_client *client, size_t bytes);
+
+void mqtt_ng_get_stats(struct mqtt_ng_client *client, struct mqtt_ng_stats *stats);
+
+int mqtt_ng_set_topic_alias(struct mqtt_ng_client *client, const char *topic);