Hello Jacob,
Unfortunately it didn’t work. When address:port is in use it fails loudly (a
red message in SUMO). I’ve tried some other ports and still hangs. Launching it
with —trace option:
…
lots of stuff
…
__init__.py(466): break
__init__.py(469): return getVersion()
--- modulename: __init__, funcname: getVersion
__init__.py(491): command = constants.CMD_GETVERSION
__init__.py(492): _message.queue.append(command)
__init__.py(493): _message.string += struct.pack("!BB", 1 + 1, command)
__init__.py(494): result = _sendExact()
--- modulename: __init__, funcname: _sendExact
__init__.py(289): if _embedded:
__init__.py(292): length = struct.pack("!i", len(_message.string) + 4)
__init__.py(293): _connections[""].send(length + _message.string)
__init__.py(294): result = _recvExact()
--- modulename: __init__, funcname: _recvExact
__init__.py(269): try:
__init__.py(270): result = ""
__init__.py(271): while len(result) < 4:
__init__.py(272): t = _connections[""].recv(4 - len(result))
Here is where the program hangs and my heart breaks in two. Thanks,
Alberto
> On Apr 28, 2015, at 9:50 AM, Jakob Erdmann <[email protected]> wrote:
>
> Hello,
> possibly the port is in use. Try using a different value for PORT in
> runner.py line 42
> regards,
> Jakob
>
> 2015-04-28 9:12 GMT+02:00 Alberto Díaz <[email protected]
> <mailto:[email protected]>>:
> Hi all,
>
> I’ve been trying to connect SUMO server from a python script using TraCI (the
> tutorial of traffic lights located in
> http://sumo.dlr.de/wiki/Tutorials/TraCI4Traffic_Lights
> <http://sumo.dlr.de/wiki/Tutorials/TraCI4Traffic_Lights>
> <http://sumo.dlr.de/wiki/Tutorials/TraCI4Traffic_Lights
> <http://sumo.dlr.de/wiki/Tutorials/TraCI4Traffic_Lights>>). The problem is
> TraCI hangs while receiving data from sumo, in line 272 of track/__init__.py:
>
> …
> t = _connections[""].recv(4 - len(result))
> …
>
> I don’t know where else look, but I’m sure somebody has suffered this problem
> before and I’s like to know if it’s related to the system where is installed
> (OS X Yosemite), the environment (python 2.7.9) or a known bug in SUMO
> (haven’t found any information about ir, so I don’t think so).
>
> Thank you very much in advance. Have a nice day,
>
> Alberto
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