Session cookie is not passed

[benoitguigal]

I am using Relay with express-graphql and express-session. I would like to use the session in my GraphQL schema but unfortunately the connect.sid cookie is not passed in graphql requests.
Should I create my own network layer for that or is this supposed to be built-in ?

[fson]

The default network layer uses fetch which does not pass cookies by default, but can enable them by passing an init object for fetch when you're creating the network layer:

Relay.injectNetworkLayer(
  new Relay.DefaultNetworkLayer('http://example.com/graphql', {
    credentials: 'same-origin',
  })
);

[benoitguigal]

Great ! Reading the documentation for injecting a network layer, it is not clear to me where this should be done. Just before declaring the RootContainer ? I am using react-router-relay so I wonder if I have control over the network layer or if I should look inside react-router-relay.

[fson]

@benoitguigal It shouldn't matter as long as you do it before rendering your app with ReactDOM.render(). You probably have some sort of entry point for your app where you set up the router and call ReactDOM.render() – do it there.

[benoitguigal]

Works like a charm, thanks a lot !

[cpotemski]

@benoitguigal Can you give me an example how you pass the connect.sid to the requests? I am at the same point and don't know how to set the cookie.

[benoitguigal]

@dasarma, just add:

Relay.injectNetworkLayer(
  new Relay.DefaultNetworkLayer('http://example.com/graphql', {
    credentials: 'same-origin',
  })
);

an then cookies will be passed.
Then just follow documentation from express-graphql:

var session = require('express-session');
var graphqlHTTP = require('express-graphql');

var app = express();

app.use(session({ secret: 'keyboard cat', cookie: { maxAge: 60000 }}));

app.use('/graphql', graphqlHTTP(request => ({
  schema: MySessionAwareGraphQLSchema,
  rootValue: { session: request.session },
  graphiql: true
})));