Failing to fetch from Fastly

[avale-ne]

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Describe the bug

The GraphQL handler is failing to fetch from Amplience GraphQL, which seems to be hosted on Fastly. Fastly is responding with a 400 Bad request.

It seems related to the "Host" request header.

[ardatan]

Is it possible for you to create a reproduction?

[avale-ne]

Difficult because I can not disclose the origin server. I was able to narrow down the problem to the Host header, using Postman.

The yaml file is pretty much out of the box, just the endpoint. No authorization needed.

[avale-ne]

I was able to make introspection work by using the source property pointing to a dump of the Amplience Schema. The runtime ( operations ) won't work though ( same 400 bad request ).

[ardatan]

Is the problem the Host header we send or something else? If us, you can pass a custom Host header by using schemaHeaders.