Async connectionParams at request time

Issue

We supply the authentication token while the request is being made for the http case, this comes in the form of a Token http header.

For the WS case, we wish to supply authentication information (preferably when we first subscribe to the subscription), this is because when the GraphQLWsLink is created, the user has not logged in yet and hence we have no token to supply.

Is there a way of doing some WS equivalent:

const authLink = new ApolloLink(async (operation, forward) => {
  // Mint the token
  const token = createToken();

  // Use the setContext method to set the HTTP headers.
  operation.setContext({
    headers: {
      authorization: token ? `Bearer ${token}` : "",
    },
  });

  // Call the next link in the middleware chain.
  return forward(operation);
});

What we’re after is some way to do something like this:

const wsLink = new GraphQLWsLink(
  createClient({
    url: graphqWSlURL,
      // Called sometime after we've had the chance to log the user in.
+    buildConnectionParams: () => {
+        // Mint the token
+        const token = createToken();
+        return {
+            authorization: token ? `Bearer ${token}` : "",
+        }
+    }
      //The user isn't logged in yet
-    connectionParams: {
-      authorization: //we dont have the token yet :(
-    },
  })
);

Maybe there’s a way to do this that I don’t know about?

[felixmccuaig]

Looks like you can supply an async function, cheers!

[KillerCodeMonkey]

strange, but the global typing says “no” in my ide, and when i try it, i get the error, that the method takes no parameter. But that’s none of your business.

Thanks again 😃