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Re: [sumo-user] Disconnect with Traci
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Hi Zhiqiang,
it could be helpful if you provide some more details:
Under what circumstances does the connection fail? Do the circumstances
during failure differ from before? Does it disconnect while it is
connected, or not connect at all? Etc.
Also, how are you starting SUMO, manually, programmatically? Etc.
Greets, Menno
On 10-7-2018 15:27, 胡志强 wrote:
At the beginning ,it works well,but some time later,it may disconnect
with the sever.So ,what's the possible reasons?
Best regards,
Zhiqiang
Menno van der Woude <menno@xxxxxxxxxxxxxxxxxx
<mailto:menno@xxxxxxxxxxxxxxxxxx>> 于2018年7月10日周二 下午8:44写道：
Hi Zhiqiang,
it seems like SUMO is not running, since the the client cannot connect
to the TCP server. Make sure you start SUMO with the --remote-port
<INT>
option as described here: http://sumo.dlr.de/wiki/TraCI#SUMO_startup.
If you need to simulate many runs, you will have to automate starting
SUMO as well.
Greets,
Menno
On 10-7-2018 14:34, 胡志强 wrote:
> Dear sumo-users:
> I am doing a traffic light program to optimize the
timing of
> traffic light by using Traci.But I met a problem,I need to
simulate the
> process again and again,then,I got this error:
>
> Could not connect to TraCI server at localhost:55141 [Errno 111]
> Connection refused
> Retrying in 2 seconds
> Could not connect to TraCI server at localhost:55141 [Errno 111]
> Connection refused
> Retrying in 3 seconds
> Could not connect to TraCI server at localhost:55141 [Errno 111]
> Connection refused
> Retrying in 4 seconds
> Could not connect to TraCI server at localhost:55141 [Errno 111]
> Connection refused
> Retrying in 5 seconds
> Could not connect to TraCI server at localhost:55141 [Errno 111]
> Connection refused
> Retrying in 6 seconds
> Could not connect to TraCI server at localhost:55141 [Errno 111]
> Connection refused
> Retrying in 7 seconds
> Could not connect to TraCI server at localhost:55141 [Errno 111]
> Connection refused
> Retrying in 8 seconds
> Could not connect to TraCI server at localhost:55141 [Errno 111]
> Connection refused
> Retrying in 9 seconds
> Could not connect to TraCI server at localhost:55141 [Errno 111]
> Connection refused
> Retrying in 10 seconds
> Could not connect to TraCI server at localhost:55141 [Errno 111]
> Connection refused
> Traceback (most recent call last):
> File "main.py", line 78, in <module>
> train(RL_natural)
> File "main.py", line 26, in train
> observation = env.reset()
> File
>
"/home/huzhiqiang/traffic-signal-control/traci_tls_PER_8s_lr0.00025/trafficlight_env.py",
> line 110, in reset
> "--tripinfo-output", "tripinfo.xml"])
> File "/home/huzhiqiang/sumo/tools/traci/__init__.py", line 86,
in start
> _connections[label] = connect(port, numRetries, "localhost",
> sumoProcess)
> File "/home/huzhiqiang/sumo/tools/traci/__init__.py", line 64,
in connect
> raise FatalTraCIError("Could not connect in %s tries" %
(numRetries
> + 1))
> traci.exceptions.FatalTraCIError: Could not connect in 11 tries
>
> How can I fix it?
>
> Best regards,
> Zhiqiang
>
>
>
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