[New Monitor] RTSP support

[myxor]

⚠️ Please verify that this feature request has NOT been suggested before.

• [X] I checked and didn't find similar feature request

🏷️ Feature Request Type

New Monitor

🔖 Feature description

Support RTSP (https://en.wikipedia.org/wiki/Real_Time_Streaming_Protocol) which is often used by IP Cameras.

✔️ Solution

Support RTSP Monitor

❓ Alternatives

-

📝 Additional Context

-

[totalitarian]

love this too

[CommanderStorm]

As always: We are open to PRs, here is our contribution guide.

Note that

• a Pull request should be class extending MonitorType instead of the currently primary approach of writing monitors in monitor.js. See for details.
• Depending on how easy this is to test, a testcase is also appreciated. Rationale: I don't expect plenty of people to use this => If this breaks accidentally, we wouldn't notice for a long time

[Baruxa]

I need it very much, that would be great!!!

[serveradmin9912]

Yes I would need that too. Im currently just pinging the cams. A RTSP checkup would be more precise.

[thielj]

@CommanderStorm

RTSP(S) is almost exactly like HTTP(S), except that you would send a request like this...

OPTIONS rtsp://media.example.com:554/path?query RTSP/1.0
CSeq: 1

...and receive a respnse like that...

RTSP/1.0 200 OK
Cseq: 1

...plus some optional headers you can ignore. The major difference is the use of RTSP/1.0 vs HTTP/1.0 and that most implementations probably require the CSeq header.

---

Testing if the camera actually transmits a video stream would require using ffprobe (from ffmpeg). For example, the following could be run repeatedly from a cron job:

docker run -it --rm --entrypoint ffprobe minidocks/ffmpeg \
  -hide_banner -loglevel info \
  -rtsp_transport tcp \
  -i 'rtsp://media.example.com:554/path?query' \
  | grep 'Video:.*' \
  && curl https://uptime-kuma.example.com/api/push/hJKhjk4Hjk?status=up

Run only the first few lines before the grep until you can get a sensible output. Then grep for whatever assures you that your camera feed is what you're expecting. For brownie points, extract a fancy message and pass it on to uptime-kuma.

If ffprobe is already installed, replace the first line with just ffprobe.