My trial has worked so far today... not a single invalid nonce
error.... but it's only been 12 hours

Simon

On Aug 12, 12:59 pm, "Rob O'Brien" <[email protected]> wrote:
> The interesting thing with my situation is that I'm still in development, so
> there's only a single person (me) hitting the app. Further, I'm only
> attempting a single call to Twitter.
>
> Also, I get a 401 on everything that requires authentication, but not on
> something like a rateLimitStatus check.
>
> Further, a call to /followers/ids.xml *works* on my local dev box, but not
> on the production server. The only difference I can think of would be IP
> address.
>
> I've been able to trace 3 separate requests being generated by Twitter4J and
> here are the values:
>
> [Wed Aug 12 10:19:56 PDT 2009]
> oauth_timestamp="1250097596",oauth_nonce="329444963"
>
> [Wed Aug 12 10:20:20 PDT 2009]
> oauth_timestamp="1250097620",oauth_nonce="173112023"
>
> [Wed Aug 12 10:24:39 PDT 2009]
> oauth_timestamp="1250097879",oauth_nonce="3202768030"
>
> Each timestamp is larger than the last and eachnonceis unique.
>
> Knowing that my values are legit makes me think there's another problem, but
> Twitter hasn't responded to my api@ email.
>
> Rob O'Brien
> Web Application Developer & Consultant
> [email protected]
>
>
>
> -----Original Message-----
> From: [email protected]
>
> [mailto:[email protected]] On Behalf Of Zaudio
> Sent: Tuesday, August 11, 2009 12:04 PM
> To: Twitter Development Talk
> Subject: [twitter-dev] Re: Invalid /usednonce
>
> We're having the same issue in our app, occurs sporadically in our
> logs - but I believe the cause with us is that:
>
> We're generatingnoncevalues as a timestamp seeded sequence of random
> numbers
> We're creating an instance of the Oauth class that does this for each
> logged in user for the app
>
> Thus, for a single timestamp, it IS possible that the time seedednoncevalues 
> are the same....
>
> So - corrrective action being trialled: I'm prefixing the 'random'noncevalue 
> with the userID stripped from the start of the token,
> padded to a fixed length of chars... this should guarantee then that
> thenonce/timestamp combo is indeed unique for every request made from
> our app ....
>
> Simon
>
> On Aug 11, 6:45 am, Dan Borthwick <[email protected]> wrote:
> > For our app, we successfully call request_token from our server. When
> > we then call statuses/update from the client, we get a 401 'Invalid /
> > usednonce' response. If the request_token call comes directly from
> > the client, the update call succeeds.
>
> > The nonces have been sanity checked and are definitely different for
> > each call. GET requests to users/show succeed regardless of whether
> > the request_token comes from the proxy server or client. Code is based
> > on MGTwitterEngine-1.0.8-OAuth.
>
> > The same code was working ok prior to the recent DoS downtime. Perhaps
> > something has been changed on Twitter's side that might result in the
> > 401 response?
>
> > On Aug 11, 8:38 am, graceawalker <[email protected]> wrote:
>
> > > No, mynonceis definately new every time. Surely if there was
> > > something wrong with the way it was being generated it would error
> > > during requestToken/accessToken/VerifyCredentials too?? All the code
> > > ive looked through is doing it exactly the same way. Is the 'status'
> > > parameter beingusedjust like all the oauth parameters? is an
> > > 'invalidnonce' error, definately an invalidnonceor could it be to
> > > do with the timestamp and timezones. Clutching at straws here...
>
> > > On Aug 11, 3:12 am, Chris Babcock <[email protected]> wrote:
>
> > > > On Mon, 10 Aug 2009 04:14:43 -0700 (PDT)
>
> > > > graceawalker <[email protected]> wrote:
> > > > > I am calling and getting the whole way up to getting the access
> token
> > > > > just fine in my app (one im writing myself in c#), but when i try
> and
> > > > > call the update status URL im getting an 'Invalid/usednonce' error
> in
> > > > > my response data. Im not sure why this is, im calling the update
> > > > > method in the exact same way that i called request token apart from
> > > > > the new 'status' parameter in the query string. I call 'verify
> > > > > credentials' with my access token to ensure that it is working and
> it
> > > > > sends me back all of the correct data, but it is erroring when
> trying
> > > > > to update my status. Is there any obvious solution to this, or am i
> > > > > not supposed to be signing and organising the parameters in the same
> > > > > way that i did before? Im really stuck here guys and need help!
>
> > > > Right, thenonceis a "numberusedonce". Its purpose is to prevent
> > > > replay attacks. If you use the samenoncefor more than one call to the
> > > > API then you *should* be getting an error.
>
> > > > Chris- Hide quoted text -
>
> > - Show quoted text -- Hide quoted text -
>
> - Show quoted text -

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