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AprsProxy

I was thinking how to monitor APRS statistic from my iGates (from me or friends), one proper way is to run a APRS proxy server between iGates and APRS-IS server. But I just could not find a software to do this so I decided to write my own.

This APRS proxy server would received packets from devices, logged it into files, generate statistic or send/forward specific aprs packets to other application, replace the text to meet my requirement and resend packets to native APRS-IS server.

Features

  • Text replacing with multiple keywords
  • Build-in forwarder
  • Simple, no config file with only one command
  • Handle multi client connections with highly efficiency
  • You can use aprs-is via domain name
  • Daily log to files
  • Work with docker

Command

$ ./aprsproxy -h
   ___                ___                   
  / _ | ___  _______ / _ \_______ __ ____ __
 / __ |/ _ \/ __(_-</ ___/ __/ _ \\ \ / // /
/_/ |_/ .__/_/ /___/_/  /_/  \___/_\_\\_, / 
     /_/                             /___/  
                A simply APRS-IS proxy tool.

USAGE:
    aprsproxy [FLAGS] [OPTIONS]

FLAGS:
    -f, --filelog    Enable file logging
    -h, --help       Prints help information
    -q, --quiet      Quiet mode, no output to stdout
    -V, --version    Prints version information
    -v, --verbose    Verbose mode (-v, -vv, -vvv, etc.)

OPTIONS:
        --to <forward-to>              Forward the matched APRS packets to Send-only APRS-IS service with http protocol
                                       [default: china.aprs2.net:8080]
        --forward <forward-with>...    Forward APRS packets start with the line prefix
    -l, --local <local-addr>           The local address and port to listen on [default: 0.0.0.0:14580]
    -r, --remote <remote-addr>         The remote address and port to connect to [default: china.aprs2.net:14580]
        --replace <replace-from>...    The text to be replaced, can be multiple values
        --with <replace-with>...       The text to replace with, must be the same length of replace-from

Example

$ ./aprsproxy --replace=SO23 --with=T3ET -f -v
[2021-07-27T02:33:45Z INFO  aprsproxy] Starting up...
[2021-07-27T02:33:45Z INFO  aprsproxy::dns] Resolving ip address...
[2021-07-27T02:33:45Z INFO  aprsproxy::relay] Listening on: 0.0.0.0:8074
[2021-07-27T02:33:45Z INFO  aprsproxy::relay] Proxying to: 43.245.198.229:14580
[2021-07-27T02:33:45Z INFO  aprsproxy::relay] A new connection 113.118.74.21:47851 is coming!
[2021-07-27T02:33:46Z INFO  aprsproxy::relay] user B**** pass ****** vers APRS-51WG3-8K-20190610
[2021-07-27T02:34:06Z INFO  aprsproxy::relay] BI7KCD-9>R2UYX6,BA7NQ-10*,WIDE1*,BH7KCJ-3*,WIDE2*:`)XQm4>/`"42}_%
[2021-07-27T02:34:53Z INFO  aprsproxy::relay] BI7KCD-9>R3PPR7,BA7NQ-10*,WIDE1*,BH7KCJ-3*,WIDE2*:`)XRmpC>/`"4#}_%
[2021-07-27T02:35:07Z INFO  aprsproxy::relay] VR2ZVR>RR2VT1,BH7KCJ-3*,WIDE1*:`*_LnplK\]"4s}Hello from VR2ZVR...Stay Safe !!=

Run with docker

$ docker run -it --init --rm -e TZ=Asia/Shanghai -p 14580:14580 lazywalker/aprsproxy --replace=SO23 --with=T3ET -v
2022-08-13 22:32:53.087+08:00 INFO  aprsproxy - Starting up...
2022-08-13 22:32:53.087+08:00 INFO  aprsproxy::dns - Resolving ip address...
2022-08-13 22:32:53.112+08:00 INFO  aprsproxy::relay - Listening on: 0.0.0.0:14580
2022-08-13 22:32:53.112+08:00 INFO  aprsproxy::relay - Proxying to: 156.251.162.146:14580
...

# log to files
$ docker run -it --init --rm -e TZ=Asia/Shanghai -p 14580:14580 --volume /volume1/docker/aprsproxy:/app/log lazywalker/aprsproxy --replace=SO23 --with=T3ET -v -f