Infrequent command sending closes socket

[gkahn13]

In carla_example.py, after

carla.sendCommand(control)

I added

print(i)
if i == 10:
    print('Sleeping for 10 seconds...')
    time.sleep(10)

in order to test if the server is ok just waiting around (for example, when I need to train my model on data I've gathered).

When running the code, I get the following output, error messages, and my ctrl-C

Successfully Connected to Carla Server
1
2
3
4
5
6
7
8
9
10
Sleeping for 10 seconds...
11
ERROR:root:Error on Datastream, Raise Again
Traceback (most recent call last):
RuntimeError: unexpected connection close
ERROR:root:Some internal Socket error 
Traceback (most recent call last):
RuntimeError: unexpected connection close

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
Exception
^CTraceback (most recent call last):
  File "carla_example.py", line 247, in <module>
    use_example(args.config,port=args.port, host=args.host,print_measurements=args.print,images_to_disk= args.images_to_disk)
  File "carla_example.py", line 146, in use_example
    measurements = carla.getMeasurements()
  File "/home/gkahn/source/carla/PythonClient/carla/carla.py", line 237, in getMeasurements
    meas_dict = self._data_stream.get_the_latest_data()
  File "/home/gkahn/source/carla/PythonClient/carla/datastream.py", line 163, in get_the_latest_data
    data = self._data_buffer.get(timeout=20)
  File "/home/gkahn/source/anaconda/envs/gcg/lib/python3.5/queue.py", line 173, in get
    self.not_empty.wait(remaining)
  File "/home/gkahn/source/anaconda/envs/gcg/lib/python3.5/threading.py", line 297, in wait
    gotit = waiter.acquire(True, timeout)
KeyboardInterrupt

Is this the expected behavior, am I doing something wrong, or is this a bug?

[felipecode]

First, i would like to thank you a lot for your careful testing.
About the issue:
This is expected behavior ! The server has a default timeout of 10 seconds.
This can be changed by changing the timeout on the SERVER configuration file ( Example.CarlaSettings.ini at the server root folder)

[CARLA/Server]
; Time-out in milliseconds for the networking operations.
ServerTimeOut=10000 ; < - Change here

After, when you run the server you should send this configuration file through the command line as:
-carla-settings=Example.CarlaSettings.ini

However, if you have waited more, the client would probably have reconnected and restarted
the episode. By default, when the server disconnects, the client tries to reconnect after 10 seconds.
Thanks.

[gkahn13]

Ah I see, thanks!