Rhomobile: Not able to post the update on twitter

Rhomobile: Not able to post the update on twitter

I am using Rhomobile (for Android) to post status update on Twitter. For
that, following the steps of Oauth implementation I am able to get logged
in with Twitter but after login, when trying to post the status update
everytime I got HTTP Response as {"errors":[{"message":"Could not
authenticate you","code":32}]}.
Below is the relevant code for making the request to post status update.
def post_to_twitter(comment)
$rnd = rand(36**32).to_s(36)
$post_status_url = "https://api.twitter.com/1.1/statuses/update.json"
$oauth_token1 = @account_set.tt_oauth_token
$oauth_token_secret1 = @account_set.tt_oauth_token_secret
@oauth_nonce = $rnd
@oauth_timestamp = Time.now.to_i.to_s
@http_port = System.get_property('rhodes_port')
@url_param = "oauth_consumer_key="+ $oauth_consumer_key + "&" +
"oauth_nonce=" + @oauth_nonce + "&" +
"oauth_signature_method=" + $oauth_signature_method + "&" +
"oauth_timestamp=" + @oauth_timestamp + "&" +
"oauth_token=" + $oauth_token1 + "&" +
"oauth_version="+ $oauth_version + "&" +
"status=" + Rho::RhoSupport.url_encode("Test")
$oauth_sign = get_auth_signature($post_status_url, @url_param, "")
@auth_header = "OAuth oauth_consumer_key="+ $oauth_consumer_key + ", " +
"oauth_nonce=" + @oauth_nonce + ", " +
"oauth_signature=" + $oauth_sign + ", " +
"oauth_signature_method=" + $oauth_signature_method + ",
" +
"oauth_timestamp=" + @oauth_timestamp + ", " +
"oauth_token=" + $oauth_token1 + ", " +
"oauth_version="+ $oauth_version + ", " +
"status=" + Rho::RhoSupport.url_encode("Test")
postTTres = Rho::AsyncHttp.post(
:url => $post_status_url,
:headers =>{"Content-Type" => "application/x-www-form-urlencoded",
"Authorization" => @auth_header }
)
p postTTres
end
The signature generation function is as follows:
def get_auth_signature (url, url_param, secret)
signature = "POST&" + Rho::RhoSupport.url_encode(url).to_s +
"&" + Rho::RhoSupport.url_encode(url_param).to_s
key = $oauth_consumer_secret + "&" + secret
hmac = HMAC::SHA1.new(key)
hmac.update(signature)
$signature = Base64.encode64("#{hmac.digest}")
$signature = Rho::RhoSupport.url_encode("#{$signature.gsub(/\n/,'')}")
return $signature
end
The parameters values when traced are as follows:
@url_param before generating signature ---------
oauth_consumer_key=2ChmEzWBe5Y9hMYODqA1IQ&oauth_non
ce=iyb9502vspjnhj9orb87sriych16678b&oauth_signature_method=HMAC-SHA1&oauth_timestamp=1380117614&oauth_token=244586214-M6A2jMlR7vZiqwAMrfuSj7I7XFzFTRd4
6nV6aTLK&oauth_version=1.0&status=Test
Passing @url_param to get_auth_signature() to generate signature.
Generated signature url and signature is
Signature string ----------
POST&https%3A%2F%2Fapi.twitter.com%2F1.1%2Fstatuses%2Fupdate.
json&oauth_consumer_key%3D2ChmEzWBe5Y9hMYODqA1IQ%26oauth_nonce%3Diyb9502vspjnhj9orb87sriych16678b%26oauth_signature_method%3DHMAC-SHA1%26oauth_timesta
mp%3D1380117614%26oauth_token%3D244586214-M6A2jMlR7vZiqwAMrfuSj7I7XFzFTRd46nV6aTLK%26oauth_version%3D1.0%26status%3DTest"
Base64 string ------- gjdXuU3qoGNt90Q2dRhNM3IXaBI%3D
Passing all these values as header Authorization to
https://api.twitter.com/1.1/statuses/update.json
and got
Http Response as {"errors":[{"message":"Could not authenticate
you","code":32}]}.
Also tried passing it as post parameters in :body but no luck.
postTTres = Rho::AsyncHttp.post(
:url => $post_status_url,
:headers =>{"Content-Type" => "application/x-www-form-urlencoded"},
:body => @url_param + "&oauth_signature=" + $oauth_sign
)
Checked the system timings with Twitter server timings and thats fine.
Also tried with static oauth_token that we can get from Twitter account
but then too same response.
Please help me to fix this. I am unable to trace what I am missing or
where I am going wrong.
Thanks