Interceptor: TypeError: ord() expected string of length 1, but int found

[Michael]

(Starting as a new thread and this is a new issue)

I am getting the following error from interceptor when running it in driver mode.  My station reports to both WU and WeatherCloud.  Below is the error and the TCPDUMP

weewx@raspberrypi:~ $ sudo PYTHONPATH=/usr/share/weewx python /usr/share/weewx/user/interceptor.py --device=wu-client --mode=sniff --iface=eth0 --filter="src 192.168.50.9 and dst port 80"
[sudo] password for weewx:
Exception in thread ServerThread:
Traceback (most recent call last):
  File "/usr/lib/python3.9/threading.py", line 954, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.9/threading.py", line 892, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/share/weewx/user/interceptor.py", line 435, in run_server
    self._server.run()
  File "/usr/share/weewx/user/interceptor.py", line 491, in run
    self.decode_ip_packet(0, pkt, ts)
  File "/usr/share/weewx/user/interceptor.py", line 518, in decode_ip_packet
    (_timestamp, _pktlen, _fmt_bytes(data)))
  File "/usr/share/weewx/user/interceptor.py", line 338, in _fmt_bytes
    return ' '.join(['%02x' % ord(x) for x in data])
  File "/usr/share/weewx/user/interceptor.py", line 338, in <listcomp>
    return ' '.join(['%02x' % ord(x) for x in data])
TypeError: ord() expected string of length 1, but int found

Here is the dump of traffic:

weewx@raspberrypi:~ $ sudo tcpdump host 192.168.50.9
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), snapshot length 262144 bytes
19:49:15.918021 IP L7-F5C2FC.17834 > RT-AC68U-30F8.domain: 53873+ A? rtupdate.wunderground.com. (43)
19:49:16.056965 IP L7-F5C2FC.62824 > ec2-54-159-105-134.compute-1.amazonaws.com.http: Flags [S], seq 83185671, win 5760, options [mss 1440], length 0
19:49:16.159234 IP L7-F5C2FC.62824 > ec2-54-159-105-134.compute-1.amazonaws.com.http: Flags [.], ack 3936522529, win 5760, length 0
19:49:16.160895 IP L7-F5C2FC.62824 > ec2-54-159-105-134.compute-1.amazonaws.com.http: Flags [P.], seq 0:548, ack 1, win 5760, length 548: HTTP: GET /weatherstation/updateweatherstation.php?ID=XXXXXXXXXX&PASSWORD=XXXXXXXXXX&indoortempf=72.7&indoorhumidity=40&tempf=75.4&humidity=15&dewptf=24.5&windchillf=75.4&absbaromin=26.64&baromin=29.73&windspeedmph=3.4&windgustmph=4.5&winddir=158&windspdmph_avg2m=3.4&winddir_avg2m=248&windgustmph_10m=2.5&windgustdir_10m=270&rainin=0.0&dailyrainin=0.0&weeklyrainin=0.0&monthlyrainin=1.37&solarradiation=0.0&UV=0&dateutc=2023-4-25%202:49:15&action=updateraw&realtime=1&rtfreq=5& HTTP/1.1
19:49:16.364694 IP L7-F5C2FC.62824 > ec2-54-159-105-134.compute-1.amazonaws.com.http: Flags [.], ack 282, win 5479, length 0
19:49:16.367566 IP L7-F5C2FC.62824 > ec2-54-159-105-134.compute-1.amazonaws.com.http: Flags [F.], seq 548, ack 282, win 5479, length 0
19:49:30.809293 ARP, Request who-has L7-F5C2FC tell L7-F5C2FC, length 46
19:50:15.918028 IP L7-F5C2FC.17936 > RT-AC68U-30F8.domain: 30842+ A? rtupdate.wunderground.com. (43)
19:50:15.957673 IP L7-F5C2FC.62825 > ec2-52-22-134-222.compute-1.amazonaws.com.http: Flags [S], seq 83203998, win 5760, options [mss 1440], length 0
19:50:16.063154 IP L7-F5C2FC.62825 > ec2-52-22-134-222.compute-1.amazonaws.com.http: Flags [.], ack 1640669121, win 5760, length 0
19:50:16.065450 IP L7-F5C2FC.62825 > ec2-52-22-134-222.compute-1.amazonaws.com.http: Flags [P.], seq 0:548, ack 1, win 5760, length 548: HTTP: GET /weatherstation/updateweatherstation.php?ID=XXXXXXXXXX&PASSWORD=XXXXXXXXXX&indoortempf=72.7&indoorhumidity=40&tempf=75.4&humidity=15&dewptf=24.5&windchillf=75.4&absbaromin=26.64&baromin=29.72&windspeedmph=3.4&windgustmph=4.5&winddir=158&windspdmph_avg2m=3.4&winddir_avg2m=248&windgustmph_10m=2.5&windgustdir_10m=270&rainin=0.0&dailyrainin=0.0&weeklyrainin=0.0&monthlyrainin=1.37&solarradiation=0.0&UV=0&dateutc=2023-4-25%202:50:15&action=updateraw&realtime=1&rtfreq=5& HTTP/1.1
19:50:16.376265 IP L7-F5C2FC.62825 > ec2-52-22-134-222.compute-1.amazonaws.com.http: Flags [.], ack 282, win 5479, length 0
19:50:16.376605 IP L7-F5C2FC.62825 > ec2-52-22-134-222.compute-1.amazonaws.com.http: Flags [F.], seq 548, ack 282, win 5479, length 0
19:50:30.825744 ARP, Request who-has L7-F5C2FC tell L7-F5C2FC, length 46
19:51:15.917905 IP L7-F5C2FC.1681 > RT-AC68U-30F8.domain: 7879+ A? rtupdate.wunderground.com. (43)
19:51:16.173490 IP L7-F5C2FC.62826 > ec2-34-232-250-77.compute-1.amazonaws.com.http: Flags [S], seq 83222327, win 5760, options [mss 1440], length 0
19:51:16.275864 IP L7-F5C2FC.62826 > ec2-34-232-250-77.compute-1.amazonaws.com.http: Flags [.], ack 928660949, win 5760, length 0
19:51:16.277401 IP L7-F5C2FC.62826 > ec2-34-232-250-77.compute-1.amazonaws.com.http: Flags [P.], seq 0:548, ack 1, win 5760, length 548: HTTP: GET /weatherstation/updateweatherstation.php?ID=XXXXXXXXXX&PASSWORD=XXXXXXXXXX&indoortempf=72.7&indoorhumidity=40&tempf=75.4&humidity=15&dewptf=24.5&windchillf=75.4&absbaromin=26.65&baromin=29.73&windspeedmph=3.4&windgustmph=4.5&winddir=158&windspdmph_avg2m=3.4&winddir_avg2m=248&windgustmph_10m=2.5&windgustdir_10m=270&rainin=0.0&dailyrainin=0.0&weeklyrainin=0.0&monthlyrainin=1.37&solarradiation=0.0&UV=0&dateutc=2023-4-25%202:51:15&action=updateraw&realtime=1&rtfreq=5& HTTP/1.1

[Francesco Venti]

I had this issue too and posted a possible solution some time ago, but my post was removed with the entire conversation being deleted. Anyway you could try to edit the interceptor.py (make a backup first!!!) (usually/user/share/weewx/user/interceptor.py),  it should be at about line 337, try to replace ord(x) with x

This should let it run (it runs fine on my side), but I'm not sure if it works and actually captures packets (I couldn't test it myself since I don't have that type of station)

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[Michael]

I tried that, it no longer errors but does not return any results.