twittet oauth problems: can't do verify_credentials api call

Trying to use OAuth for user authenticating via OAuth 1.0A

I do successfully get request_tokens, i do successfully get oauth_token and oauth_secret. Then, i am supposed to perform api call as described over there.

I perform get-request to url api.twitter.com/1/account/verify_credentials.xml with authorization header:

OAuth oauth_consumer_key="zqOQIgnviRjNDuGIdHAA",oauth_nonce="1997904",oauth_signature="aSf2zj8xfjXcN9z%2B04eOwFd8fKk%3D",oauth_signature_method="HMAC-SHA1",oauth_timestamp="1291981333",oauth_token="jxmgnF4m2HB7IP9RbylyyF7gaZuRXj8YF1eVUIDSLrk",oauth_version="1.0"

and get:

401 Unauthorized <?xml version="1.0" encoding="UTF-8"?>
<hash>
  <error>Could not authenticate with OAuth.</error>
  <request>/1/account/verify_c开发者_开发问答redentials.xml</request>
</hash>

I triple-checked everything: access token, access_token_secret, signature generation, etc, etc - no luck.

But, i suppose, cause i managed to get access token, that's not twitter problem. I'm using Net::OAuth perl module.

Can anybody help me, please? What authentication is twitter talking about? What am i doing wrong?

You should be asking this question on the Twitter developer mailing list. They do a great job of debugging OAuth problems. You will get right to Twitter engineers. Include the level of details you have here.

http://groups.google.com/group/twitter-development-talk