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Re: [sumo-user] Multi-Clients in TraaS
The files provided in traas/examples are only for illustration. In your own traci script you can use  'sumo' instead of  'sumoD'.
The multi-client access to SUMO operates sequentially so there is no speed advantage from spreading your calls across multiple clients.
Instead, use Subscriptions to automatically get update on vehicle data

regards,
Jakob

Am Fr., 1. Feb. 2019 um 10:23 Uhr schrieb 周大兵 <zdb2004826@xxxxxxx>:

Hi, Jakob:
I've got the latest TraaS. The multi-client rquires a debug sumo enviroment("sumoD"), could you please send me a debug SUMO package to install?
And dose SumoTraciConnection support multi-thread enviroment? The scenario is I want to get all the vehicles position in the network(latitude, logitude), but calling do_job_get will take a lot of time, so that I want to do this part in another thread.
Thank you for your help.
Your kindly Samuel.




At 2019-02-01 15:08:58, "Jakob Erdmann" <namdre.sumo@xxxxxxxxx> wrote:
Hello,
multi-client support for TraaS is not present in version 1.1.0. Instead you have to use the latest development version, currently available for download at http://sumo.sourceforge.net/daily/sumo-msvc12x64-git.zip

regards,
Jakob

Am Fr., 1. Feb. 2019 um 06:29 Uhr schrieb 周大兵 <zdb2004826@xxxxxxx>:
Hi Sumo:
I was building multi-clients to SUMO by employing below example code in JDK enviroment:
and encounter the error information below:(By the way It is OK when I tried 2 python multi-clients connecting to SUMO)

Error: Answered with error to command 0x03: Wrong position in requestMessage after dispatching command. Expected command length was 10 but 6 Bytes were read.
java.net.SocketException: Connection reset
    at java.net.SocketInputStream.read(SocketInputStream.java:210)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at java.net.SocketInputStream.read(SocketInputStream.java:224)
    at java.io.DataInputStream.readInt(DataInputStream.java:387)
    at de.tudresden.sumo.util.Query.doSimulationStep(Query.java:135)
    at de.tudresden.sumo.util.CommandProcessor.do_SimulationStep(CommandProcessor.java:74)
    at it.polito.appeal.traci.SumoTraciConnection.do_timestep(SumoTraciConnection.java:407)
    at it.polito.appeal.traci.SumoTraciConnection.do_timestep(SumoTraciConnection.java:400)
    at MultiClient1.main(MultiClient1.java:32)

java.net.SocketException: Connection reset
    at java.net.SocketInputStream.read(SocketInputStream.java:210)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at java.net.SocketInputStream.read(SocketInputStream.java:224)
    at java.io.DataInputStream.readInt(DataInputStream.java:387)
    at de.tudresden.sumo.util.Query.doSimulationStep(Query.java:135)
    at de.tudresden.sumo.util.CommandProcessor.do_SimulationStep(CommandProcessor.java:74)
    at it.polito.appeal.traci.SumoTraciConnection.do_timestep(SumoTraciConnection.java:407)
    at it.polito.appeal.traci.SumoTraciConnection.do_timestep(SumoTraciConnection.java:400)
    at MultiClient2.main(MultiClient2.java:20)

Are there any Traas version issuesr or enviromental cofigurations problems?
Thank you.
Your kindly Samuel.
2019-02-01



 

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