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live stream troubleshooting info

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Scott Lamb 2021-03-31 16:36:21 -07:00
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guide/troubleshooting.md
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@ -11,6 +11,7 @@ need more help.
* [Slow operations](#slow-operations)
* [Camera stream errors](#camera-stream-errors)
* [Problems](#problems)
* [Live stream always fails with `ws close: 1006`](#live-stream-always-fails-with-ws-close-1006)
* [`Error: pts not monotonically increasing; got 26615520 then 26539470`](#error-pts-not-monotonically-increasing-got-26615520-then-26539470)
* [`moonfire-nvr config` displays garbage](#moonfire-nvr-config-displays-garbage)
* [Moonfire NVR reports problems with the database or filesystem](#moonfire-nvr-reports-problems-with-the-database-or-filesystem)
@ -207,6 +208,33 @@ W20210309 00:28:55.527 s-courtyard-sub moonfire_nvr::streamer] courtyard-sub: sl
## Problems
### Live stream always fails with `ws close: 1006`
Moonfire NVR's UI uses a
[WebSocket](https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API)
connection to the server for the live view. If you see an alert in the lower
left corner of a live stream area that says `ws close: 1006`, this means that
the WebSocket connection failed. Unfortunately this is all the UI knows;
the WebSocket spec [deliberately withholds](https://html.spec.whatwg.org/multipage/web-sockets.html#closeWebSocket) additional debugging information
for security reasons.
You might be able to learn more through your browser's Javascript console.
If you consistently see this error when other parts of the UI work properly,
here are some things to check:
* If you are using Safari and haven't logged out since Moonfire NVR v0.6.3
was released, try logging out and back in. Safari apparently doesn't send
[`SameSite=Strict`
cookies](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie/SameSite#strict)
on WebSocket requests. Since v0.6.3, Moonfire NVR uses `SameSite=Lax`
instead.
* If you are using a proxy server, check that it is properly configured for
Websockets. In particular, if you followed the [Securing Moonfire NVR
guide](schema.md) prior to 29 Feb 2020, look at [this
update](https://github.com/scottlamb/moonfire-nvr/commit/92266612b5c9163eb6096c580ba751280a403648#diff-e8bdd96dda101a25a541a6629675ea46bd6eaf670c6417c76662db5397c50c19)
to those instructions.
### `Error: pts not monotonically increasing; got 26615520 then 26539470`
If your streams cut out and you see error messages like this one in Moonfire