Error ([Errno 111] Connection refused)

[Gaurav Jotwani]

Hello,

I am trying to run veins sample example(plexe-veins/examples/sinPlatoon). I get the following error:

I have installed plexe-veins 1.1

and SUM0 0.19

Omnet 4.6

Logging to /tmp/sumo-launchd.log

Listening on port 9999

Connection from 127.0.0.1 on port 58396

Handling connection from 127.0.0.1 on port 58396

Got TraCI message of length 2

Got TraCI command of length 1

Got TraCI command 0x0

Got CMD_GETVERSION

Got TraCI message of length 234

Got TraCI command of length 233

Got TraCI command 0x75

Got CMD_FILE_SEND for "sumo-launchd.launch.xml"

Got CMD_FILE_SEND with data "<launch>

  <basedir path="examples/sinPlatoon/sumocfg"/>

  <copy file="freeway.net.xml"/>

  <copy file="freeway.rou.xml"/>

  <copy file="freeway.sumo.cfg" type="config"/>

  <seed value="0"/>

</launch>

"

Creating temporary directory...

Temporary dir is /tmp/sumo-launchd-tmp-VyaMqA

Base dir is examples/sinPlatoon/sumocfg

Seed is 0

Finding free port number...

Claiming lock on port

...found port 60485

Starting SUMO (sumo-gui -c freeway.sumo.cfg) on port 60485, seed 0

Connecting to SUMO (sumo-gui -c freeway.sumo.cfg) on port 60485 (try 1)

Error ([Errno 111] Connection refused)

Connecting to SUMO (sumo-gui -c freeway.sumo.cfg) on port 60485 (try 2)

Error ([Errno 111] Connection refused)

Connecting to SUMO (sumo-gui -c freeway.sumo.cfg) on port 60485 (try 3)

Error ([Errno 111] Connection refused)

Connecting to SUMO (sumo-gui -c freeway.sumo.cfg) on port 60485 (try 4)

Releasing lock on port

Starting proxy mode

[Michele Segata]

Dear Gaurav,

there is no error. If you read the veins documentation
(http://veins.car2x.org/documentation/sumo-launchd/) you find

"The SUMO Traffic Control Interface (TraCI) modules for OMNeT++ come
with a small daemon to make running coupled simulations easier:
This daemon, sumo-launchd, is designed to run in the background,
listening for incoming requests. On each incoming connection, it
receives the simulation setup in XML format, then launches a separate
instance of SUMO and proxies requests between OMNeT++ and SUMO."

The daemon starts sumo and tries to connect to it. Until sumo is not
started, the daemon is not able to connect to it, clearly. So what the
launchd does is continuously trying to connect until it succeeds. In
your case the daemon succeeded at the fourth attempt (you got 3
connection refused). Your simulation should be running fine.

Best
Michele

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Michele Segata, MSc

Department of Information Engineering and Computer Science
University of Trento, Italy

Institute of Computer Science
University of Innsbruck, Austria

http://ccs-labs.org/~segata/

[Mkaefakdf]

So if it not a problem, why the simulation crashes?
I have the same issue
BR

[Amr Abughazala]

I think this is duplicate

https://groups.google.com/forum/#!topicsearchin/omnetpp/Error$20(%5BErrno$20111%5D$20Connection$20refused);context-place=msg/omnetpp/u-nvI71GN6o/UopcBpX6CAAJ/omnetpp/QX0SL67lJ-0

https://groups.google.com/forum/#!topicsearchin/omnetpp/Error$20(%5BErrno$20111%5D$20Connection$20refused);context-place=msg/omnetpp/u-nvI71GN6o/UopcBpX6CAAJ/omnetpp/QV1rs6Ui19U

search for Errno 111 in previous posts and you will get more information.