Azure/azure-relay-bridge

Error: FormatException: The format of value 'application/json; charset=utf-8' is invalid.

sasank-chaganty opened this issue · 1 comments

sasank-chaganty commented

Hello,

I've been encountering a persistent issue where if I get a request with the following header sent to my relay endpoint:
Content-Type: application/json; charset=utf-8

azbridge prints out the following error:
Error: FormatException: The format of value 'application/json; charset=utf-8' is invalid.

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sasank-chaganty commented

Adding more detail for this issue:

Error: System.FormatException: 'The format of value 'application/json; charset=utf-8' is invalid.'

This exception was originally thrown at this call stack:
    System.Net.Http.Headers.MediaTypeHeaderValue.CheckMediaTypeFormat(string, string)
    System.Net.Http.Headers.MediaTypeHeaderValue.MediaTypeHeaderValue(string)
    Microsoft.Azure.Relay.Bridge.TcpRemoteForwarder.CreateHttpRequestMessage(Microsoft.Azure.Relay.RelayedHttpListenerContext) in TcpRemoteForwarder.cs
    Microsoft.Azure.Relay.Bridge.TcpRemoteForwarder.HandleRequest(Microsoft.Azure.Relay.RelayedHttpListenerContext) in TcpRemoteForwarder.cs

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Failing on this line when contentType is application/json; charset=utf-8. For some reason, the MediaTypeHeaderValue throws an error even though the string is RFC 2616 compliant

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Looks like this has been a long-standing issue: dotnet/runtime#20272

Ended up using this work-around from @wjrogers to get unblocked:

var mediaType = MediaTypeHeaderValue.Parse("text/plain; charset=iso-8859-5");

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