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pythonwiresharkpacket-sniffersnrf52openthread
Emily
Emily

Reputation: 39

Creating sniffer for OpenThread leads to error

I'm trying to build a sniffer for an OpenThread network using this tutorial. I built the openthread/ot-nrf528xx binaries using the USB_trans-Flag, flashed the ot-rcp.hex-File onto a Adafruit Feather nrf52840 and disabled the MSD. After that I created a small OpenThread network with only one router and one child (Also on Adafruit Feather nrf52840 devices).

My problem now is when I try to run the sniffer.py with following command: sudo python3 sniffer.py -c 15 -u /dev/ttyACM0 --crc --no-reset --rssi | wireshark -k -i - (with -c 15 being the channel I use in the OpenThread network and -u /dev/ttyACM0 being the USB-Port where the sniffer is connected.), I get the following log output and error message:

Initializing sniffer...

CB_Unknown (3): 
 ** (wireshark:11740) 12:27:54.470908 [Capture MESSAGE] -- Capture Start ...

CB_Unknown (3): 
ERROR: failed to initialize sniffer
 ** (wireshark:11740) 12:27:57.356867 [Capture MESSAGE] -- Error message from child: "Data written to the pipe is neither in a supported pcap format nor in pcapng format.", "Please report this to the developers of the program writing to the pipe."

Wireshark is opened, but displays the same error message.

Can anybody tell me what I'm doing wrong? Did I miss a step or do I maybe have to set something in wireshark?

PS: I'm using Ubuntu Linux.

Thanks for any help,

Emily.

Upvotes: 1

Views: 106

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