Hi Mike,

I'm using at the moment HTML Client on Debian 10, RH-7, Cent-OS7. I'll try to upgrade my development system to Bullseye and will let you know how it works. I never tried this setup without using SSL and I can imagine that there's could be some security restrictions in browser, which makes it impossible. Anyway, I'm going to try it and will come back to you.

regards, Alex

PS: Don't think the reason is the text mode, because client opens socket in binary mode. Anyway, I will get rid of websockify and put the ws support into x2gowswrapper code

Am 21.06.21 um 10:13 schrieb Mike Gabriel:

Hi Alex,

On  Mi 21 Apr 2021 22:43:53 CEST, Oleksandr Shneyder wrote:

...

https://wiki.x2go.org/doku.php/wiki:advanced:x2gohtmlclient

I am currently trying to provide an out-of-the-box DEB installation of x2gohtmlclient. For this, I need to make some adjustments, mainly these are about wss: traffic becoming optional and defaulting everything to localhost with ws: protocol. Of course, in real world deployments, this needs to SSL'ified again. But I'd really love to provide DEBs that demo x2gohtmlclient out-of-the-box (and SSL certificates are not so much things that come out of the box).

This all seems to work fine, only that I get a failure when x2goclient.min.js starts communicating with the x2gokdrive Xserver (via x2gowswrapper, via websockify).

I think that my seen bug is caused by my websockify 0.9 which has the text data mode removed (compared to earlier versions). See: https://github.com/novnc/websockify/issues/365#issuecomment-432270758

As I am testing everything on Debian 11, I indeed have websockify 0.9 installed. Where did you test the whole stack of x2gohtmlclient, x2goclient.min.js, x2gowebrpc and x2gowswrapper on? Debian 10, maybe?

My symptom in the browser is:

  - Logon works - X2Go KDrive sessions starts in the background (processes come up, desktop is resumable via native X2Go Client later on) - X2Go Logo appears in the placeholder area in the webbrowser - X2Go session strings is shown at the top of the session window in the browser - and then, the session is immediately closed again.

The (error) message(s) I get in the browser console while this happens are/is these/this:

WS Open Event {isTrusted: true, type: "open", target: WebSocket,
currentTarget: WebSocket, eventPhase: 2, …}

x2goclient.min.js:208 Sending geometry event: ArrayBuffer(41)
Uint32Array(5) [7, 60294400, 0, 0, 0] Uint16Array(5) [7, 0, 1280, 920, 0]

x2goclient.min.js:204 Sending client Version and OS:
ArrayBuffer(41)byteLength: (...)__proto__: ArrayBuffer[[Int8Array]]:
Int8Array(41)[[Uint8Array]]: Uint8Array(41)[[ArrayBufferByteLength]]:
41[[ArrayBufferData]]: "0x0fc800a0c030" Uint32Array(5) [10, 196612, 0,
0, 0]0: 101: 1966122: 03: 04: 0buffer: (...)byteLength: (...)byteOffset:
(...)length: (...)Symbol(Symbol.toStringTag): (...)__proto__: TypedArray
Uint16Array(5) [10, 0, 4, 3, 0]0: 101: 02: 43: 34: 0buffer:
(...)byteLength: (...)byteOffset: (...)length:
(...)Symbol(Symbol.toStringTag): (...)__proto__: TypedArray

x2goclient.min.js:265 WS Close CloseEvent {isTrusted: true, wasClean:
true, code: 1003, reason: "Unsupported: Text frames are not supported",
type: "close", …}

Before I dig any deeper, could you try your test setups with websockify 0.9 and report back if you see a similar error popping up or not?

Thanks, Mike

--

Oleksandr Shneyder | Email: o.shneyder@phoca-gmbh.de phoca GmbH | Tel. : 0911 - 14870374 0 Schleiermacherstr. 2 | Fax. : 0911 - 14870374 9 D-90491 Nürnberg | Mobil: 0163 - 49 64 461

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