@eric1tran saw this issue again yesterday evening (my time = UTC + 11) This screen shot at 19:42:06
The condition cleared itself while I was looking at the logs. This screen shot at 19:45:45
Here is at the piaware log snippet for the period:
Feb 25 19:04:40 raspi4 piaware[654]: 1328701 msgs recv'd from dump1090-fa (523 in last 5m); 1328290 msgs sent to FlightAware
Feb 25 19:09:40 raspi4 piaware[654]: 1329133 msgs recv'd from dump1090-fa (432 in last 5m); 1328722 msgs sent to FlightAware
Feb 25 19:14:40 raspi4 piaware[654]: 1329660 msgs recv'd from dump1090-fa (527 in last 5m); 1329249 msgs sent to FlightAware
Feb 25 19:18:25 raspi4 piaware[654]: mlat-client(27850): Receiver status: connected
Feb 25 19:18:25 raspi4 piaware[654]: mlat-client(27850): Server status: synchronized with 163 nearby receivers
Feb 25 19:18:25 raspi4 piaware[654]: mlat-client(27850): Receiver: 110.7 msg/s received 67.0 msg/s processed (61%)
Feb 25 19:18:25 raspi4 piaware[654]: mlat-client(27850): Server: 0.0 kB/s from server 0.0kB/s TCP to server 1.0kB/s UDP to server
Feb 25 19:18:25 raspi4 piaware[654]: mlat-client(27850): Results: 1.9 positions/minute
Feb 25 19:18:25 raspi4 piaware[654]: mlat-client(27850): Aircraft: 2 of 2 Mode S, 15 of 16 ADS-B used
Feb 25 19:19:40 raspi4 piaware[654]: 1330078 msgs recv'd from dump1090-fa (418 in last 5m); 1329667 msgs sent to FlightAware
Feb 25 19:24:40 raspi4 piaware[654]: 1330471 msgs recv'd from dump1090-fa (393 in last 5m); 1330060 msgs sent to FlightAware
Feb 25 19:29:40 raspi4 piaware[654]: 1330931 msgs recv'd from dump1090-fa (460 in last 5m); 1330520 msgs sent to FlightAware
Feb 25 19:33:25 raspi4 piaware[654]: mlat-client(27850): Receiver status: connected
Feb 25 19:33:25 raspi4 piaware[654]: mlat-client(27850): Server status: synchronized with 121 nearby receivers
Feb 25 19:33:25 raspi4 piaware[654]: mlat-client(27850): Receiver: 112.9 msg/s received 65.0 msg/s processed (58%)
Feb 25 19:33:25 raspi4 piaware[654]: mlat-client(27850): Server: 0.0 kB/s from server 0.0kB/s TCP to server 1.0kB/s UDP to server
Feb 25 19:33:25 raspi4 piaware[654]: mlat-client(27850): Results: 4.7 positions/minute
Feb 25 19:33:25 raspi4 piaware[654]: mlat-client(27850): Aircraft: 1 of 1 Mode S, 13 of 13 ADS-B used
Feb 25 19:34:40 raspi4 piaware[654]: 1331317 msgs recv'd from dump1090-fa (386 in last 5m); 1330906 msgs sent to FlightAware
Feb 25 19:39:35 raspi4 piaware[654]: timed out waiting for alive message from FlightAware, reconnecting...
Feb 25 19:39:35 raspi4 piaware[654]: multilateration data no longer required, disabling mlat client
Feb 25 19:39:36 raspi4 piaware[654]: fa-mlat-client exited normally
Feb 25 19:39:36 raspi4 piaware[654]: reconnecting in 6 seconds...
Feb 25 19:39:36 raspi4 piaware[654]: mlat-client(27850): Disconnecting from localhost:30005: Lost connection to multilateration server, no need for input data
Feb 25 19:39:36 raspi4 piaware[654]: mlat-client(27850): Exiting on connection loss
Feb 25 19:39:40 raspi4 piaware[654]: 1331711 msgs recv'd from dump1090-fa (394 in last 5m); 1331294 msgs sent to FlightAware
Feb 25 19:39:42 raspi4 piaware[654]: Connecting to FlightAware adept server at piaware.flightaware.com/1200
Feb 25 19:39:57 raspi4 piaware[654]: Connection attempt with adept server at piaware.flightaware.com/1200 timed out
Feb 25 19:39:57 raspi4 piaware[654]: reconnecting in 5 seconds...
Feb 25 19:40:02 raspi4 piaware[654]: Connecting to FlightAware adept server at piaware.flightaware.com/1200
Feb 25 19:40:17 raspi4 piaware[654]: Connection attempt with adept server at piaware.flightaware.com/1200 timed out
Feb 25 19:40:17 raspi4 piaware[654]: reconnecting in 5 seconds...
Feb 25 19:40:22 raspi4 piaware[654]: Connecting to FlightAware adept server at 70.42.6.156/1200
Feb 25 19:40:24 raspi4 piaware[654]: Connection with adept server at 70.42.6.156/1200 established
Feb 25 19:40:24 raspi4 piaware[654]: TLS handshake with adept server at 70.42.6.156/1200 completed
Feb 25 19:40:24 raspi4 piaware[654]: FlightAware server certificate validated
Feb 25 19:40:24 raspi4 piaware[654]: encrypted session established with FlightAware
Feb 25 19:40:24 raspi4 sudo[31225]: piaware : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/netstat --program --tcp --wide --all --numeric
Feb 25 19:40:24 raspi4 sudo[31225]: pam_unix(sudo:session): session opened for user root by (uid=0)
Feb 25 19:40:24 raspi4 sudo[31225]: pam_unix(sudo:session): session closed for user root
Feb 25 19:40:25 raspi4 piaware[654]: logged in to FlightAware as user JRG1956
Feb 25 19:40:25 raspi4 piaware[654]: my feeder ID is c43cc4bc-7b47-4b03-968b-568b94f4b18f
Feb 25 19:40:25 raspi4 piaware[654]: site statistics URL: https://flightaware.com/adsb/stats/user/JRG1956#stats-123363
Feb 25 19:40:25 raspi4 piaware[654]: multilateration data requested
Feb 25 19:40:25 raspi4 sudo[31231]: piaware : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/bin/netstat --program --tcp --wide --all --numeric
Feb 25 19:40:25 raspi4 sudo[31231]: pam_unix(sudo:session): session opened for user root by (uid=0)
Feb 25 19:40:25 raspi4 sudo[31231]: pam_unix(sudo:session): session closed for user root
Feb 25 19:40:25 raspi4 piaware[654]: Starting multilateration client: /usr/lib/piaware/helpers/fa-mlat-client --input-connect localhost:30005 --input-type dump1090 --results beast,connect,localhost:30104 --results beast,listen,30105 --results ext_basestation,listen,30106 --udp-transport 70.42.6.156:10310:3859518743
Feb 25 19:40:25 raspi4 piaware[654]: mlat-client(31233): fa-mlat-client 0.2.11 starting up
Feb 25 19:40:25 raspi4 piaware[654]: mlat-client(31233): Using UDP transport to 70.42.6.156 port 10310
Feb 25 19:40:25 raspi4 piaware[654]: mlat-client(31233): Listening for Beast-format results connection on port 30105
Feb 25 19:40:25 raspi4 piaware[654]: mlat-client(31233): Listening for Extended Basestation-format results connection on port 30106
Feb 25 19:40:25 raspi4 piaware[654]: mlat-client(31233): Route MTU changed to 1500
Feb 25 19:40:25 raspi4 piaware[654]: mlat-client(31233): Input connected to localhost:30005
Feb 25 19:40:25 raspi4 piaware[654]: mlat-client(31233): Input format changed to BEAST, 12MHz clock
Feb 25 19:40:26 raspi4 piaware[654]: mlat-client(31233): Beast-format results connection with ::1:30104: connection established
Feb 25 19:44:40 raspi4 piaware[654]: 1332049 msgs recv'd from dump1090-fa (338 in last 5m); 1331579 msgs sent to FlightAware
Feb 25 19:49:40 raspi4 piaware[654]: 1332408 msgs recv'd from dump1090-fa (359 in last 5m); 1331938 msgs sent to FlightAware
Feb 25 19:54:40 raspi4 piaware[654]: 1332744 msgs recv'd from dump1090-fa (336 in last 5m); 1332274 msgs sent to FlightAware
Feb 25 19:55:26 raspi4 piaware[654]: mlat-client(31233): Receiver status: connected
Feb 25 19:55:26 raspi4 piaware[654]: mlat-client(31233): Server status: synchronized with 126 nearby receivers
Feb 25 19:55:26 raspi4 piaware[654]: mlat-client(31233): Receiver: 84.5 msg/s received 50.0 msg/s processed (59%)
Feb 25 19:55:26 raspi4 piaware[654]: mlat-client(31233): Server: 0.0 kB/s from server 0.0kB/s TCP to server 0.8kB/s UDP to server
Feb 25 19:55:26 raspi4 piaware[654]: mlat-client(31233): Aircraft: 0 of 0 Mode S, 9 of 9 ADS-B used
Feb 25 19:59:40 raspi4 piaware[654]: 1333069 msgs recv'd from dump1090-fa (325 in last 5m); 1332599 msgs sent to FlightAware
Feb 25 20:04:40 raspi4 piaware[654]: 1333358 msgs recv'd from dump1090-fa (289 in last 5m); 1332888 msgs sent to FlightAware
Feb 25 20:09:40 raspi4 piaware[654]: 1333581 msgs recv'd from dump1090-fa (223 in last 5m); 1333111 msgs sent to FlightAware
Feb 25 20:10:26 raspi4 piaware[654]: mlat-client(31233): Receiver status: connected
Feb 25 20:10:26 raspi4 piaware[654]: mlat-client(31233): Server status: synchronized with 112 nearby receivers
Feb 25 20:10:26 raspi4 piaware[654]: mlat-client(31233): Receiver: 71.3 msg/s received 40.1 msg/s processed (56%)
Feb 25 20:10:26 raspi4 piaware[654]: mlat-client(31233): Server: 0.0 kB/s from server 0.0kB/s TCP to server 0.7kB/s UDP to server
Feb 25 20:10:26 raspi4 piaware[654]: mlat-client(31233): Aircraft: 1 of 1 Mode S, 7 of 7 ADS-B used
Looking more closely at the log, I see that I had the “timed out waiting for alive message from FlightAware, reconnecting…” message four times February 22nd (apologies to @johnb0 - I forgot to use --no-pager to see the full log before searching), and three times on Feb 25th - none since the last documented in this post.
Note that only the instances on the 25th also had the “Connection attempt with adept server at piaware.flightaware.com/1200 timed out” line(s) as well.
Of potential interest, I also saw the same issue on February 23rd, but there is nothing in the log indicating a timeout around the time of the screenshot I took.
Let me know if you want the full log or any further detail.