Invalid oauth signature method - but i'm using HmacSha1

[freeubi]

Hello,

i'm building a web api with RestSharp authentication. 
I set the signaturemethod to HmacSha1, but still i get this error:

{"errors":[{"errorType":"oauth","fieldName":"oauth_signature_method","message":"Invalid signature method: HMACSHA1. Fitbit API currently supports: HMAC-SHA1"}],"success":false}

This method worked 2 weeks ago.
What can be the problem?

[ibahdanau · Accepted solution]

You should pass exactly "HMAC-SHA1" value. In other words you have missing "-" in signature method that you pass in your request.

[freeubi]

I cant pass anything to the OAuth1Authenticator, just i can set from the RestSharp list, but the same code works on a windows hpone 8 page, but not on the server.

[ibahdanau]

Fitbit API servers expect "HMAC-SHA1" as a value.

If the library you're using does not allow it please contat the developers who developed this library.