pymultimonaprs corrupts packet data by trimming whitespace

[hessu]

pymultimonaprs removes any leading or trailing whitespace in a packet (space, tab characters). This is packet data corruption; packets should be forwarded unmodified (up to the first CR or LF character).

pymultimonaprs/pymultimonaprs/frame.py

Line 23 in 96d4cf1

payload = payload.strip()

pymultimonaprs/pymultimonaprs/multimon.py

Line 64 in 96d4cf1

line = line.strip()

A valid packet may have whitespace in the beginning or end. Specifically, an APRS packet may well have a space character in the end that conveys information: the Yaesu VX-8 is identified by a space in the end of the packet! See mic-e type codes, http://www.aprs.org/aprs12/mic-e-types.txt

By trimming whitespace a modified duplicate copy is created. The APRS-IS will then have two versions of the same original packet: one which has the spaces, and one which doesn't. Please see hint 1:

https://github.com/hessu/aprsc/blob/master/doc/IGATE-HINTS.md