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ControlPort error in gr-ieee802-11, wifi-loopback example.

From: Anton Ottosson
Subject: ControlPort error in gr-ieee802-11, wifi-loopback example.
Date: Sat, 3 Jul 2021 15:47:08 +0000


I am trying to set up `gr-ieee802-11` (https://github.com/bastibl/gr-ieee802-11), `maint-3.8` branch, with GNU Radio 3.8. As recommended in the readme I run the `wifi_loopback.grc` example flowgraph, expecting to see some decoded "Hello World" packets in the console. The flowgraph runs, but the output does not show what I expected. The most important part of the output is probably the message

`Failed to to connect to ControlPort. Please make sure that you have Thrift installed and check your firewall rules.`

printed during startup. More details, including console output, can be seen here: https://github.com/bastibl/gr-ieee802-11/issues/292#issuecomment-873317584

I must confess that I don't really know what the role of  "ControlPort" and Thrift is here, so I'm not sure how to proceed. But this is not what the output is supposed to be, right? Has anyone here had the same problem, and found a way to get past it?

My current setup was installed using PyBOMBS, under Ubuntu 20.04.2 LTS. To be precise i initialized a PyBOMBS prefix with `gr-recipes/gnuradio-default` and then installed `gr-recipes/gr-ieee-80211`. After seeing the message above I also installed `gr-recipes/apache-thrift`, hoping that this would solve the issue, but it did not seem to make any difference.

Best regards,


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