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I am using Veins-4a2 and Sumo-0.22.0. Since many months working with this platform, today I tried to launch a new simulation but I got this error in the terminal: 

<stderr><![CDATA[Warning: Environment variable SUMO_HOME is not set,
schema resolution will use slow website lookups.
Error: unable to resolve host/address 'sumo.dlr.de'
In file 'myFile.poly.xml'

and this error in Omnet++:

<!> Error in module (Veins::TraCIScenarioManagerLaunchd) 

RSUExampleScenario.manager (id=6) at event #1, t=0: Attempted to read 

past end of byte buffer.

Note that the environment variable SUMO_HOME is well set. I could not understand the error, can anyone helps me to fix it please?

Here is myFile.poly.xml:

https://www.transfernow.net/ddl/myFile

Joe
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1 Answers1

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Sumo tries to validate myFile.poly.xml with its schema definition. I guess, the value of xsi:noNamespaceSchemaLocation in myFile.poly.xml is set to some url which includes sumo.dlr.de.

Apparently, http://sumo.dlr.de/ is down since a couple of days at least, hence this won't work. Try to use http://sumo.sourceforge.net/xsd/polyconvertConfiguration.xsd as value instead.

Julian Heinovski
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  • Thank you for your reply, I tried to use the new url but I got this error: <![CDATA[Error: no declaration found for element 'additional' In file 'myFile.poly.xml. How can I fix it please? – Joe May 31 '18 at 08:21
  • Knowing that myFile.poly.xml contains this line: – Joe May 31 '18 at 08:27
  • I tried the poly file from Veins 4a2 with Sumo 0.22 and it worked. I also tried the same file with your schema definition and it worked, too. Please edit your question and post you poly file. – Julian Heinovski May 31 '18 at 09:09
  • I tried with Veins-4a2 which I used since many years but it does not work, I edited my post by adding a link to my file. – Joe May 31 '18 at 09:25
  • I added your file to erlangen.launchd.xml in Veins 4a2 (``) and ran the example simulation. Sumo 0.22 loaded the file without errors. Maybe your environment variable is not set after all. Please do `echo $SUMO_HOME` to verify that it is indeed set. – Julian Heinovski May 31 '18 at 10:24
  • It's weird, I tested my file with erlangen example in Veins-4a2 but it does not work. It shows me the same error: <![CDATA[Error: no declaration found for element 'additional' – Joe May 31 '18 at 11:00