simon
6cdca4f3ad
Slaves send HEARTBEAT every 1s; the master marks clients inactive after 3s without traffic and reactivates on reconnect. CLIENT_INFO reports last_ping as milliseconds since the last packet, not uptime. Co-authored-by: Cursor <cursoragent@cursor.com>
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
#ifndef CLIENT_REGISTRY_H
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#define CLIENT_REGISTRY_H
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#include "esp_err.h"
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#define CLIENT_REGISTRY_MAX 16
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#define CLIENT_MAC_LEN 6
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typedef struct {
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uint32_t id;
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bool available;
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bool used;
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uint8_t mac[CLIENT_MAC_LEN];
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/** Milliseconds since boot when last packet was received from this client. */
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uint32_t last_ping_at;
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/** Milliseconds since boot when last heartbeat / SLAVE_INFO was accepted. */
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uint32_t last_success_ping_at;
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uint32_t version;
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} client_info_t;
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void client_registry_init(void);
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/** Milliseconds since boot (same clock as stored ping timestamps). */
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uint32_t client_registry_now_ms(void);
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/** Ms elapsed since timestamp; 0 if timestamp is 0. */
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uint32_t client_registry_ms_since(uint32_t timestamp);
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/** Register or refresh a client; updates both ping timestamps. */
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esp_err_t client_registry_upsert(const uint8_t mac[CLIENT_MAC_LEN], uint32_t id,
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uint32_t version, bool available, bool used,
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bool *out_is_new);
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/**
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* Record a successful heartbeat (or initial slave info).
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* Sets available=true and updates last_success_ping_at (and last_ping_at).
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* If client was inactive, sets *out_reactivated=true.
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*/
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esp_err_t client_registry_heartbeat(const uint8_t mac[CLIENT_MAC_LEN],
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uint32_t id, uint32_t version, bool used,
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bool *out_is_new, bool *out_reactivated);
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/** Mark clients inactive when last_success_ping_at is older than timeout_ms. */
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void client_registry_check_timeouts(uint32_t timeout_ms);
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size_t client_registry_count(void);
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const client_info_t *client_registry_at(size_t index);
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const client_info_t *client_registry_find_by_mac(const uint8_t mac[CLIENT_MAC_LEN]);
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#endif
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