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Documentation: Azure Functions Deployment #5675

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Documentation: Azure Functions Deployment #5675

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20 changes: 20 additions & 0 deletions packages/apollo-server-azure-functions/README.md
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Expand Up @@ -138,6 +138,26 @@ The options correspond to the [express cors configuration](https://github.com/ex
* `credentials`: boolean
* `maxAge`: number

### Request Body / Token
By default Azure Functions will pass the request object as req. Pass this into the context of the ApolloServer constructor to access request contents. For example for passing an auth token to a backend.
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req is just the name you're choosing for an argument here, FWIW.


```js
const server = new ApolloServer(
{ typeDefs,
resolvers,
context: (req) => {
const authHeader = req.context.bindings.req.headers.authorization || '';
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Is that actually the best way to get a header? I see at https://www.apollographql.com/docs/apollo-server/api/apollo-server/#middleware-specific-context-fields that we pass context and also request. Wouldn't req.request.headers be simpler?

if (authHeader === '') throw new AuthenticationError('please send Bearer token with request');
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weird spacing in the error message

return {
token: authHeader,
}
},
```

### Optional, helpful packages
* azure-function-log-intercept - console.* messages appear in teh functions log.
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Not sure how helpful this is without an example of how to use it. Also typo "teh" vs "the".



## Principles

GraphQL Server is built with the following principles in mind:
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