> >From: discuss-gnuradio-bounces+sean.nowlan=gtri.gatech....@gnu.org >[mailto:discuss-gnuradio-bounces+sean.nowlan=gtri.gatech....@gnu.org] On >Behalf Of Nowlan, Sean >Sent: Monday, November 11, 2013 4:10 PM >To: discuss-gnuradio@gnu.org >Subject: [Discuss-gnuradio] gr-ctrlport-monitor timeout exception > >I'm using ControlPort to monitor transmissions through a USRP. I have a >flowgraph responsible for generating burst traffic and streaming to a >uhd_sink. Then I have a uhd_source tuned to the same frequency as the >uhd_sink, and I connect it to a ctrlport_probe2_c block with length=128. I >have ControlPort support compiled-in and enabled from a config file. I'm able >to connect to a remotely running flowgraph using gr-ctrlport-monitor and plot >the PSD of the "samples" vector pulled from the probe2 block every 100 >milliseconds. The problem is that after (what seems to be) a nondeterministic >time, the ICE port stops responding and gr-ctrlport-monitor reports an error: > >ctrlport-monitor: radio.get threw exception (exception >::Ice::ConnectTimeoutException >{ >}). > >When I close and restart, gr-ctrlport-monitor times out and segfaults: > >2013-11-11 16:02:47.329422 /usr/local/bin/gr-ctrlport-monitor: error: >Traceback (most recent call last): > File "/usr/lib/pymodules/python2.7/Ice.py", line 984, in main > status = self.doMain(args, initData) > File "/usr/lib/pymodules/python2.7/Ice.py", line 1031, in doMain > return self.run(args) > File > "/usr/local/lib/python2.7/dist-packages/gnuradio/ctrlport/IceRadioClient.py", > line 97, in run > radio = self.getRadio(host, port) > File > "/usr/local/lib/python2.7/dist-packages/gnuradio/ctrlport/IceRadioClient.py", > line 36, in getRadio > radio = GNURadio.ControlPortPrx.checkedCast(base) > File "/usr/local/lib/python2.7/dist-packages/gnuradio_ice.py", line 1257, in > checkedCast > return _M_gnuradio.ctrlport.GNURadio.ControlPortPrx.ice_checkedCast(proxy, > '::GNURadio::ControlPort', facetOrCtx, _ctx) >ConnectTimeoutException: exception ::Ice::ConnectTimeoutException >{ >} > >Segmentation fault (core dumped) > >So there are two issues to note here: > - Something in the ICE instance is breaking on the GNU Radio flowgraph > side. The port is still open; it just times out. Trying to instantiate > gr-ctrlport-monitor to an incorrect port just says "connection refused," as > expected. > - gr-ctrlport-monitor is not robust to connection-related errors like > timeouts or refused connections. > >Is there any advice of what I can turn on or enable in GNU Radio or my >flowgraph to debug the first problem? I can live with the second problem as >long as I can make sure ICE doesn't break on me. > >Thanks, >Sean
Sorry for getting antsy about this, but I'm really not sure how to go about debugging ICE server stuff. It seems like it's buried pretty deeply in gnuradio-runtime. Where's the best place to start looking to find out why the ICE server stops responding? Sean
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
