host_liveness_t Struct Reference

Host liveness detection state. More...

#include <src/discovery/session.h>

Data Fields
uint64_t	last_ping_sent_ms
	Timestamp of last ping sent (monotonic)
uint64_t	last_pong_received_ms
	Timestamp of last pong received (monotonic)
uint32_t	consecutive_failures
	Number of consecutive ping failures.
uint32_t	max_failures
	Threshold for triggering migration (default: 3)
uint64_t	ping_interval_ms
	Time between pings (default: 3000ms)
uint64_t	timeout_ms
	Timeout for ping response (default: 10000ms)
bool	ping_in_flight
	True if waiting for pong.

Detailed Description

Host liveness detection state.

Participants periodically ping the host to detect disconnects. After 3 consecutive ping failures (10s timeout each), host migration is triggered.

Definition at line 68 of file session.h.

Field Documentation

consecutive_failures

uint32_t host_liveness_t::consecutive_failures

Number of consecutive ping failures.

Definition at line 71 of file session.h.

Referenced by discovery_session_check_host_alive(), and discovery_session_create().

last_ping_sent_ms

uint64_t host_liveness_t::last_ping_sent_ms

Timestamp of last ping sent (monotonic)

Definition at line 69 of file session.h.

Referenced by discovery_session_check_host_alive(), and discovery_session_create().

last_pong_received_ms

uint64_t host_liveness_t::last_pong_received_ms

Timestamp of last pong received (monotonic)

Definition at line 70 of file session.h.

Referenced by discovery_session_create().

max_failures

uint32_t host_liveness_t::max_failures

Threshold for triggering migration (default: 3)

Definition at line 72 of file session.h.

Referenced by discovery_session_check_host_alive(), and discovery_session_create().

ping_in_flight

bool host_liveness_t::ping_in_flight

True if waiting for pong.

Definition at line 75 of file session.h.

Referenced by discovery_session_check_host_alive(), and discovery_session_create().

ping_interval_ms

uint64_t host_liveness_t::ping_interval_ms

Time between pings (default: 3000ms)

Definition at line 73 of file session.h.

Referenced by discovery_session_check_host_alive(), and discovery_session_create().

timeout_ms

uint64_t host_liveness_t::timeout_ms

Timeout for ping response (default: 10000ms)

Definition at line 74 of file session.h.

Referenced by discovery_session_check_host_alive(), and discovery_session_create().

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The documentation for this struct was generated from the following file:

• session.h