Re: [sumo-user] TraCI message length error

["m.barthauer@xxxxxxxxxxx" <m.barthauer@xxxxxxxxxxx>]

 

Hi Jakob,

 

the problem is that I use the Python client. I remember I had to adapt my code due to name changes in traci.vehicle.add[Full] to make it working again. Now, I call:

• traci.start()
• traci.simulation.getDeltaT()
• traci.simulationStep()

Then, the error happens. The TraCI tutorial can be executed successfully, however. I use the latest development version and will notify you in case I can narrow down the problem.

 

Regards

Mirko

 

 

 

 

 

-----Original-Nachricht-----

Betreff: Re: [sumo-user] TraCI message length error

Datum: 2018-08-27T13:27:39+0200

Von: "Jakob Erdmann" <namdre.sumo@xxxxxxxxx>

An: "m.barthauer@xxxxxxxxxxx" <m.barthauer@xxxxxxxxxxx>, "Sumo project User discussions" <sumo-user@xxxxxxxxxxx>

 

 

 

Hello,

this has to do with recent changes to the TraCI protocoll. (see TraCI at http://sumo.dlr.de/wiki/ChangeLog#Other)

When using a development version after [d2c6b60c9b552]

- If you use the python or C++ client you are mostly unaffected

- If you use TraaS, you have to wait for the Maintainer to update the client  (I'm optimistic that he'll have it done for the release next week)

- If you have your own client, you need to patch it as indicated in the changeLog (I can give more details if necessary)

 

regards,

Jakob

 

2018-08-27 13:10 GMT+02:00 m.barthauer@xxxxxxxxxxx <m.barthauer@xxxxxxxxxxx>:

Hi,

 

I don't know why but recently my TraCI script stopped working. I am constantly working on it but cannot remember any significant changes with respect to TraCI startup. When executing the first simulation step, SUMO stops because of an unexpected TraCI message length, I presume:

 

Error: tcpip::Storage::readIsSafe: want to read 4 bytes from Storage, but only 3 remaining

 

What reasons can cause this behaviour? Does this have to do with file encoding?

 

Regards

Mirko

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