Addon: OAuth flow to get user access token Edited

[Mahesh Pawar]

I am facing oauth_problem=signature_invalid during my Oauth authenticatuion for bamboo API.

MY BASE STRING:POST&http%3A%2F%2Flocalhost%3A8085%2Frest%2Fapi%2Flatest%2Fresult%2FPROJ-PRO2-20%2Flabel&oauth_consumer_key%3
DOAuthLabel%26oauth_token%3Dso4NDONe22v3vWaQnQgpWFWyDIiuFSyj%26oauth_signature_method%3DRSA-SHA1%26oauth_timestamp%3D149
1392759%26oauth_nonce%3D1952048179517069247%26oauth_version%3D1.0

BABOO ERROR:

Got STATUS: 401
Got Text: oauth_problem=signature_invalid&oauth_signature=syqAx45mOlK%20oI9DlGzMEQAft3M%3D&oauth_signature_base_string=P
OST%26http%253A%252F%252Flocalhost%253A8085%252Frest%252Fapi%252Flatest%252Fresult%252FPROJ-PRO2-20%252Flabel%26oauth_co
nsumer_key%253DOAuthLabel%2526oauth_nonce%253D16014373555196020893%2526oauth_signature_method%253DRSA-SHA1%2526oauth_tim
estamp%253D1491393457%2526oauth_token%253Dsse5kywTQ5Z8XWB7u0b44azs7mmBGi75%2526oauth_version%253D1.0&oauth_signature_met
hod=RSA-SHA1

my request seems to be fine...what would be that i am doing wrong?

[Gonchik Tsymzhitov]

Hope I am very slow for this question. 

For the history this article helps me 

https://confluence.atlassian.com/kb/oauth-error-oauth_problem-signature_invalid-720406720.html