Lacks reference to headers binding

[look-im-not-your-daddy]

Hello!

Here we have a short sample of headers binding, but this page has no mentions to headers binding so no further details are given regarding some very specific behavior as for instance:

1. Case-sensitivity: I discovered headers binding to be case-sensitive (side note: that goes against RFC 7230 that specifies that a HTTP Header field has a case-insensitive field name so I opened https://github.com/Azure/azure-functions-signalrservice-extension/issues/136)
2. Behavior for when a header field is not found: It throws exception

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Document Details

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• ID: 77fbaa31-cfcc-4b8c-abe0-4efeaee3e4f0
• Version Independent ID: db65fc3d-d8b3-1f19-91a0-4f3696fbca69
• Content: Azure Functions bindings expressions and patterns
• Content Source: articles/azure-functions/functions-bindings-expressions-patterns.md
• Service: azure-functions
• GitHub Login: @craigshoemaker
• Microsoft Alias: cshoe

[ChaitanyaNaykodi-MSFT]

Hello @look-im-not-your-daddy, Thank you for your feedback! We have assigned this issue to the author to review further and take the next course of action.

[look-im-not-your-daddy]

Update: please disregard point 1.