Perform the Request Token phase of OAuth, invoking function
(defaulting to "request_token" if function
is
NULL).
The value of callback
depends on whether you wish to use OAuth 1.0 or 1.0a. If you wish to use 1.0 then callback must be
NULL. To use 1.0a then callback
should either be your callback URI, or "oob" (out-of-band).
this |
an OAuthProxy |
function |
the function name to invoke |
callback_uri |
the callback URI |
|