Unable to obtain JWT token from nTokens staging server

[Nopik]

Hello,
With the 1.2.6 SDK, I'm trying following code to obtain JWT from nTokens staging server:

    const anchorDomain = 'staging.ntokens.com';
    final toml = await StellarToml.fromDomain(anchorDomain);

    final webAuth = WebAuth(
      toml.generalInformation?.webAuthEndpoint,
      Network.TESTNET,
      toml.generalInformation?.signingKey,
      anchorDomain,
    );

    final jwt = await webAuth.jwtToken(accountId, [keypair]);

and while equivalent code works on backend (JS SDK), I'm receiving error from

stellar_flutter_sdk/lib/src/sep/0010/webauth.dart

Line 282 in bcfa697

SubmitCompletedChallengeResponse result = await httpClient

:

{\"detail\":\"Unsupported media type \\"text/plain; charset=utf-8\\" in request.\"}

Can you please make sure that the Flutter SDK works with the nTokens server? I'm not sure if the problem is on the Flutter SDK side, or nTokens are too restrictive.

[christian-rogobete]

Hi @Nopik, I committed a potential fix: 9899641
Can you pls. test if it works with that and let me know?

[Nopik]

@christian-rogobete so, it changed something. Now the server responds with: {\"detail\":\"JSON parse error - Expecting value: line 1 column 1 (char 0)\"}.

[Nopik]

The body being sent seems valid: 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

[christian-rogobete]

I think it needs to be json like: {transaction="AAA..."},one moment

[christian-rogobete]

@Nopik can you please try it again? b21749b

[Nopik]

@christian-rogobete It would really be more efficient if you would try to run this code yourself. Exception: Bad state: Cannot set the body fields of a Request with content-type "application/json".

[Nopik]

Adding json.encode() solves that problem (body: json.encode({"transaction": base64EnvelopeXDR})), and now JWT token is obtained properly. Please release the 1.2.7 with those changes

[christian-rogobete]

@Nopik try it one more time please with the latest commit. I think it will solve the problem too. Pls. let me know

[Nopik]

@christian-rogobete please see my previous comment. If I leave the json.encode in place, but remove the headers like in your last commit, the original problem (Invalid media type) appears again.

[christian-rogobete]

ok, I need to fix the test too first. This is your code, right

?

[Nopik]

@christian-rogobete yes, that is my code now, it works for me.

[christian-rogobete]

ok, I will fix the test and then release a new version, thx

[Nopik]

Great, thanks.

[christian-rogobete]

yw see release 1.2.7

[Nopik]

It works, thanks.