Error linke not working

[serendipity1004]

I am using below code to concat error link to auth link and http link. However, the prints in the ErrorLink do not show when I purposefully cause error. I might be using it wrong because it's not documented. Any suggestions what might be wrong?

final HttpLink httpLink = HttpLink(
  uri: CONFIG.domain + '/apollo_api',
);

final CustomAuthLink authLink = CustomAuthLink(getHeaders: () async {
  final String token = await Storage.getAuthToken();
  final packageInfo = await PackageInfo.fromPlatform();

  final String buildNo = packageInfo.buildNumber;
  String os;

  if (Platform.isIOS) {
    os = 'iOS';
  } else if (Platform.isAndroid) {
    os = 'android';
  }

  return {
    'authorization': token,
    'os': os,
    'buildNo': buildNo,
  };
});

final ErrorLink errorLink = ErrorLink(
  errorHandler: (ErrorResponse response) {
    print(response);
    if (response.exception is OperationException) {
      print('exception:${response.exception}');
    }
  },
);

final Link link = authLink.concat(httpLink).concat(errorLink);

client = GraphQLClient(
  link: link,
  cache: NormalizedInMemoryCache(
    dataIdFromObject: cacheKeyBuilder,
  ),
);

[bsr203]

can you try authLink.concat(errorLink.concat(httpLink)) . At least this is how I do it

[serendipity1004]

@bsr203 unfortunately it does not work. What version of graphql-flutter are you using? I am currently using graphql_flutter: ^2.1.1-beta.4

[bsr203]

graphql_flutter: ^2.1.1-beta.5

[mainawycliffe]

What about final Link link = authLink..concat(httpLink)..concat(errorLink);?

And is it working when you concat just two Links? You can also try the Link.from function and see if it works.

[ekoto4]

@serendipity1004 @mainawycliffe
Did anyone find a fix to this? I am also running into this problem. It seems that no matter the order, the linking stops working correctly when the http link is concatenated. Anything concatenated afterwards does not work. Thank you for the help in advance!

[Bat-m]

same problem for me, any news or idea ?

[ekoto4]

same problem for me, any news or idea ?

The order the links are concatenated matters. This ow i set it up to get a token that was passed in the header.

static final Link _link = _tokenLink.concat(_authLink.concat(_httpLink));

I think you can substitute tokenLink for errorLink and it should work.

[Bat-m]

ok thx for your answer but I try with this

and it works

[micimize]

This is outdated / likely solved by using gql_links in 4.0.0-beta.1 #648. Please open a new issue if not