The gql_websocket_link from timonbozzapps

gql_websocket_link's Introduction

GQL WebSocket link to execute subscriptions as well as mutations & queries against a GraphQL backend. This link support autoReconnect and will resubscribe after reconnecting.

Usage

A simple usage example:

import "package:gql_link/gql_link.dart";
import "package:gql_websocket_link/gql_websocket_link.dart";

void main () {
  final link = Link.from([
    // SomeLink(),
    WebSocketLink("ws://<GRAPHQL_SERVER_ENDPOINT>/graphql"),
  ]);
}

Make sure you have WebSocket transport supported on your GraphQL server.

Features and bugs

Please file feature requests and bugs at the GitHub.

Attribution

This code was adapted with minor changed from the graphql-flutter repo

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gql_websocket_link's Issues

Need help - Subscriptions

Hello
I need some helps to implement subscription.
I try to implement something like that:

void waitConfirmations(
    String address, {
    onResult,
    onError,
    onCancel,
    onStart,
    onAbort,
  }) {
    String host =
        Uri.parse(endpoint!).host + ':' + Uri.parse(endpoint!).port.toString();

    AbsintheSocket _socket =
        AbsintheSocket('ws://' + host + '/socket/websocket');

    final String operation =
        """subscription { transactionConfirmed(address: "$address") { nbConfirmations } }""";

    Observer _observer = Observer(
      onAbort: onAbort,
      onCancel: onCancel,
      onError: onError,
      onResult: onResult,
      onStart: onStart,
    );

    Notifier notifier =
        _socket.send(GqlRequest(operation: operation), 'notifierKey');
    notifier.observe(_observer);
  }

could you tell me if your project could do something like that ?
thx

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