MQTTAsync_connectionLost not triggered if PINGRESP not received in keepalive interval

[zlm919]

Describe the bug
MQTTAsync_connectionLost not triggered if PINGRESP not received in keepalive interval

To Reproduce

1. set keepAliveInterval 5( To ensure that step 5 occurs before isReady:361(1) )
2. MQTTAsync client is connected server.
3. pulled out the LAN uplink cable
4. SEND PINGREQ
5. PINGRESP not received in keepalive interval
6. after servral minutes, the connlost callback is still not being called

Expected behavior
Trigger MQTTAsync_connectionLost.

Log files
trace.log

20240809 105722.099 (3064745284) (1)> MQTTAsync_cycle:2989
20240809 105722.099 (3064745284) (2)> Socket_getReadySocket:491
20240809 105722.099 (3064745284) (3)> Socket_continueWrites:1369
20240809 105722.099 (3064745284) (3)< Socket_continueWrites:1420 (0)
20240809 105722.099 (3064835396) (1)< Thread_wait_cond:467 (110)
20240809 105722.099 (3064835396) (1)> MQTTAsync_checkTimeouts:1689
20240809 105722.099 (3064835396) (1)< MQTTAsync_checkTimeouts:1777
20240809 105722.099 (3064835396) (1)> Thread_wait_cond:441
20240809 105722.099 (3064745284) (3)> isReady:349
20240809 105722.099 (3064745284) (3)< isReady:361 (0)
20240809 105723.229 (3064745284) (2)< Socket_getReadySocket:577 (0)
20240809 105723.229 (3064745284) (2)> MQTTAsync_sleep:105
20240809 105723.229 (3064745284) (2)< MQTTAsync_sleep:111
20240809 105723.229 (3064745284) (2)> MQTTAsync_retry:2759
20240809 105723.229 (3064745284) (3)> MQTTProtocol_keepalive:704
20240809 105723.229 PINGRESP not received in keepalive interval for client 123231412512513124_5 on socket 8, disconnecting
20240809 105723.229 (3064745284) (4)> MQTTAsync_closeSession:2408
20240809 105723.229 (3064745284) (5)> MQTTAsync_closeOnly:2377
20240809 105723.229 (3064745284) (6)> MQTTProtocol_checkPendingWrites:996
20240809 105723.229 (3064745284) (6)< MQTTProtocol_checkPendingWrites:1013
20240809 105723.229 (3064745284) (6)> MQTTPacket_send_disconnect:516
20240809 105723.229 (3064745284) (7)> MQTTPacket_send:201
20240809 105723.229 (3064745284) (8)> MQTTPacket_encode:304
20240809 105723.229 (3064745284) (8)< MQTTPacket_encode:317 (1)
20240809 105723.229 (3064745284) (8)> MQTTPacket_encode:304
20240809 105723.229 (3064745284) (8)< MQTTPacket_encode:317 (1)
20240809 105723.229 (3064745284) (8)> WebSocket_putdatas:944
20240809 105723.229 (3064745284) (9)> Socket_putdatas:770
20240809 105723.229 (3064745284) (10)> Socket_writev:694
20240809 105723.229 (3064745284) (10)< Socket_writev:746 (2)
20240809 105723.370 (3064745284) (9)< Socket_putdatas:825 (0)
20240809 105723.370 (3064745284) (8)< WebSocket_putdatas:975 (0)
20240809 105723.370 (3064745284) (7)< MQTTPacket_send:236 (0)
20240809 105723.370 8 123231412512513124_5 -> DISCONNECT (0)
20240809 105723.370 (3064745284) (6)< MQTTPacket_send_disconnect:543 (0)
20240809 105723.370 (3064745284) (6)> WebSocket_close:524
20240809 105723.370 (3064745284) (6)< WebSocket_close:572
20240809 105723.370 (3064745284) (6)> SSLSocket_close:947
20240809 105723.370 (3064745284) (7)> SSLSocket_destroyContext:934
20240809 105723.370 (3064745284) (7)< SSLSocket_destroyContext:938
20240809 105723.370 (3064745284) (6)< SSLSocket_close:960 (1)
20240809 105723.370 (3064745284) (6)> Socket_close:940
20240809 105723.370 (3064745284) (7)> Socket_close_only:866
20240809 105723.370 (3064745284) (7)< Socket_close_only:880 (0)
20240809 105723.370 (3064745284) (7)> Socket_abortWrite:1322
20240809 105723.370 (3064745284) (7)< Socket_abortWrite:1343 (0)
20240809 105723.370 (3064745284) (7)> SocketBuffer_cleanup:153
20240809 105723.370 (3064745284) (7)< SocketBuffer_cleanup:165
20240809 105723.370 Removed socket 8
20240809 105723.370 Removed socket 8
20240809 105723.415 (3064745284) (6)< Socket_close:1008 (0)
20240809 105723.415 (3064745284) (5)< MQTTAsync_closeOnly:2402
20240809 105723.415 (3064745284) (4)< MQTTAsync_closeSession:2415
20240809 105723.415 (3064745284) (3)< MQTTProtocol_keepalive:757
20240809 105723.415 (3064745284) (3)> MQTTProtocol_retry:881
20240809 105723.415 (3064745284) (3)< MQTTProtocol_retry:900
20240809 105723.415 (3064745284) (2)< MQTTAsync_retry:2769
20240809 105723.415 (3064745284) (1)< MQTTAsync_cycle:3153 (0)
20240809 105723.415 (3064745284) (1)> MQTTAsync_cycle:2989
20240809 105723.415 (3064745284) (2)> Socket_getReadySocket:491
20240809 105723.415 (3064745284) (2)< Socket_getReadySocket:577 (0)
20240809 105723.415 (3064745284) (2)> MQTTAsync_sleep:105
20240809 105723.415 (3064745284) (2)< MQTTAsync_sleep:111
20240809 105723.415 (3064745284) (2)> MQTTAsync_retry:2759
20240809 105723.415 (3064745284) (3)> MQTTProtocol_retry:881
20240809 105723.415 (3064745284) (3)< MQTTProtocol_retry:900
20240809 105723.415 (3064745284) (2)< MQTTAsync_retry:2769
20240809 105723.415 (3064745284) (1)< MQTTAsync_cycle:3153 (0)

** Environment (please complete the following information):**

• OS: [Openwrt Linux 4.9.63]
• Version [1.3.11]

Additional context

[icraggs]

This was fixed in v1.3.12 for issue #1276