Add support for Token Authenticated Registration (MSC3231)

[sailoona]

server matrix-synapse-1.61.1

[pixlwave]

Hi @sailoona just to confirm, are you attempting Token Authenticated Registration ala MSC3231 or is this some other flow that you're experiencing an issue with?

Please could you add more information to the ticket, for example:

• Element Version
• iOS Version
• Device
• Homeserver
• Steps to reproduce the error

Thanks very much

[sailoona]

Token Authenticated Registration ala MSC3231
Matrix-synapse 1.61.1
homeserver.yaml config:
enable_registration: true
registration_requires_token: true

iOS: 15.6
Element Version: 1.8.24
Device: iPhone Xr

Steps to reproduce the error:
Click button Create Account ->
Select Friends and Family ->
Edit server to chat.loonol.com ->
Click Button Register ->
Creat account: user and password ->
Click button Sign up ->
Red Error: Unrecognized request (M_UNRECOGNIZED)

Thanks

[pixlwave]

Thanks, I've updated the issue accordingly 👍

[bijoni]

Synapse Version: [v1.86.0]
homeserver.yaml config:
enable_registration: true
registration_requires_token: true

After changing the homeserver, and then press the register button in Element app, a webpage shown No such Resource is displayed.

Please follow up this. Thank you!

[cloudaxes]

+1 to this issue. I am running a homeserver (matrix-synapse-py3 v1.90.0+jammy1) with registration enabled only with registration tokens. The up-to-date version of Element from the iOS app store (v1.11.0) has the same behavior that @bijoni describes: clicking the register button in Element leads to a page that says "No such resource". I'm able to register new users with registration tokens from the Mac Element app and the Linux Element app.

The server log from the iOS app failing to register is as follow:

2023-08-28 13:12:42,450 - synapse.access.http.8008 - 465 - INFO - GET-462 - 1.244.12.121 - 8008 - {None} Processed request: 0.000sec/-0.000sec (0.002sec, 0.000sec) (0.000sec/0.000sec/0) 145B 404 "GET /_matrix/static/client/register/ HTTP/1.1" "Mozilla/5.0" [0 dbevts]

I am just hypothesizing, but it looks like this is a endpoint was removed from Synapse couple months ago: matrix-org/synapse#15405. I think it's only used by the iOS Element app when registering a new user using a registration token, which is why this regression has gone unnoticed for a few months.

[moltenbit]

+1
Registration with token not working on iOS and Android.

[Dan-Tinsman]

Any resolutions to this? Experiencing this issue now. @bijoni @cloudaxes @moltenbit did any of you ever come up with a solution?

[cloudaxes]

@Dan-Tinsman, yea, I stopped using registration tokens.