我想使用静脉，在OMNeT++网络模拟器和SUMO道路交通模拟器之间进行联合模拟。
Veins 有sumo-launchd守护程序（用 Python 编写），旨在在后台运行，监听传入的请求。在每个传入连接上，它接收 XML 格式的模拟设置，然后启动一个单独的 SUMO 实例并代理 OMNeT++ 和 SUMO 之间的请求。
当我在终端中运行sumo-launchd.py（在打开 OMNet++ 并开始模拟之后）时，我得到以下问题，我认为这是与 Python 相关的。
bluemix@blueMix:~/SUMO/veins-2.1/examples/veins$ python /home/bluemix/SUMO/veins-2.1/sumo-launchd.py -vv -c /home/bluemix/SUMO/sumo-0.19.0/bin/sumo
Logging to /tmp/sumo-launchd.log
Listening on port 9999
Connection from 127.0.0.1 on port 45234
Handling connection from 127.0.0.1 on port 45234
Got TraCI message of length 2
Got TraCI command of length 1
Got TraCI command 0x0
Got CMD_GETVERSION
Got TraCI message of length 314
Got TraCI command of length 309
Got TraCI command 0x75
Got CMD_FILE_SEND for "sumo-launchd.launch.xml"
Got CMD_FILE_SEND with data "<launch>
<copy file="erlangen.net.xml"/>
<copy file="erlangen.rou.xml"/>
<copy file="erlangen.poly.xml"/>
<copy file="erlangen.sumo.cfg" type="config"/>
<basedir path="/home/bluemix/OMNeTpp/omnetpp-4.3.1/samples/mixim/examples/veins/"/>
<seed value="0"/>
</launch>
"
Creating temporary directory...
Temporary dir is /tmp/sumo-launchd-tmp-2JQTRd
Base dir is /home/bluemix/OMNeTpp/omnetpp-4.3.1/samples/mixim/examples/veins/
Seed is 0
Finding free port number...
Claiming lock on port
...found port 41320
Starting SUMO (/home/bluemix/SUMO/sumo-0.19.0/bin/sumo -c erlangen.sumo.cfg) on port 41320, seed 0
Connecting to SUMO (/home/bluemix/SUMO/sumo-0.19.0/bin/sumo -c erlangen.sumo.cfg) on port 41320 (try 1)
Error ([Errno 111] Connection refused)
Connecting to SUMO (/home/bluemix/SUMO/sumo-0.19.0/bin/sumo -c erlangen.sumo.cfg) on port 41320 (try 2)
Error ([Errno 111] Connection refused)
Connecting to SUMO (/home/bluemix/SUMO/sumo-0.19.0/bin/sumo -c erlangen.sumo.cfg) on port 41320 (try 3)
Error ([Errno 111] Connection refused)
Connecting to SUMO (/home/bluemix/SUMO/sumo-0.19.0/bin/sumo -c erlangen.sumo.cfg) on port 41320 (try 4)
Error ([Errno 111] Connection refused)
Connecting to SUMO (/home/bluemix/SUMO/sumo-0.19.0/bin/sumo -c erlangen.sumo.cfg) on port 41320 (try 5)
Error ([Errno 111] Connection refused)
Connecting to SUMO (/home/bluemix/SUMO/sumo-0.19.0/bin/sumo -c erlangen.sumo.cfg) on port 41320 (try 6)
Error ([Errno 111] Connection refused)
Connecting to SUMO (/home/bluemix/SUMO/sumo-0.19.0/bin/sumo -c erlangen.sumo.cfg) on port 41320 (try 7)
Error ([Errno 111] Connection refused)
Connecting to SUMO (/home/bluemix/SUMO/sumo-0.19.0/bin/sumo -c erlangen.sumo.cfg) on port 41320 (try 8)
Error ([Errno 111] Connection refused)
Connecting to SUMO (/home/bluemix/SUMO/sumo-0.19.0/bin/sumo -c erlangen.sumo.cfg) on port 41320 (try 9)
Error ([Errno 111] Connection refused)
Connecting to SUMO (/home/bluemix/SUMO/sumo-0.19.0/bin/sumo -c erlangen.sumo.cfg) on port 41320 (try 10)
Error ([Errno 111] Connection refused)
Releasing lock on port
Cleaning up
Result: "<?xml version="1.0"?>
<status>
<exit-code>-1</exit-code>
<start>1390404178</start>
<end>1390404189</end>
<status>Could not connect to SUMO ([Errno 111] Connection refused). Might be protected by a personal firewall or crashed before a connection could be established.</status>
<stdout><![CDATA[Loading configuration... done.
]]></stdout>
<stderr><![CDATA[Error: Empty edges in roundabout.
Quitting (on error).
]]></stderr>
</status>
"
Closing connection from 127.0.0.1 on port 45234
^CKeyboard interrupt.
Shutting down.
以及来自 OMNeT++ 控制台的信息：
<!> Error in module (TraCIScenarioManagerLaunchd) scenario.manager (id=6) at event #1, t=0: Model error: Connection to TraCI server lost. Check your server's log. Error message: 104: Connection reset by peer.
TRAPPING on the exception above, due to a debug-on-errors=true configuration option. Is your debugger ready?
Simulation terminated with exit code: 2