LinkedIn API Fails - Node.js Request

I am trying to make REST API calls to Node.js using request module. I have obtained accessToken and accessTokenSecret.

When I make an api call to obtain my profile I get a result, but when I make an api call to do a company search I get the following error

<error>
  <status>401</status>
  <timestamp>1345187981287</timestamp>
  <request-id>HE45IXV7YZ</request-id>
  <error-code>0</error-code>
  <message>[unauthorized]. OAU:xxxxx|xxxxx|*01|*01:1345188248:kCNFNUu6JePTEy7k5e8Ca9vHAzg=</message>
</error>  

But when I make the same API call using JAVA (Scribe jar), using the same accessToken and accessTokenSecret I get results for the company search.

I am posting my node.js code below for reference

//oauth test

var request = require('request');

var key = 'xxxxx';
var secret = 'xxxxx';
var redirect = '';
var restURL = 'http://api.linkedin.com/v1/company-search?keywords=philips&format=json';
var accessToken = 'xxxxx';
var accessTokenSecret = 'xxxxx';



var proxySetting  = "http://proxy:port/";



function getRequestToken()
{
    var requestOAuth = 
    {
            consumer_key: key
          , consumer_secret: secret
          //, token: accessToken
          //, token_secret: accessTokenSecret
    };

    var requestTokenURL = 'https://api.linkedin.com/uas/oauth/requestToken';
    request.get({'proxy':proxySetting,url:requestTokenURL,oauth:requestOAuth},function(e,r,data)
    {
        console.log('Error is: ' + e);
        console.log('Data is: ' + data);
        console.log('Response is: ' + r);
    });
}




 function getAccessToken()
{
    var accessOAuth = 
    {
            consumer_key: key
          , consumer_secret: secret
          , token: 'xxxxx'
          , token_secret: 'xxxx'
          ,verifier : #####
    };

    var accessTokenURL = 'https://api.linkedin.com/uas/oauth/accessToken';
    request.get({'proxy':proxySetting,url:accessTokenURL,oauth:accessOAuth},function(e,r,data)
    {
        console.log('Error is: ' + e);
        console.log('Data is: ' + data);
        console.log('Response is: ' + r);
    });
}

/         

function comSearch()
{
    var apiToken = 'xxxxx';
    var apiTokenSecret = 'xxxxx';
    var apiOAuth = 
    {
            consumer_key: key
          , consumer_secret: secret
          , token: apiToken
          , token_secret: apiTokenSecret
    };

    var apiURL = 'http://api.linkedin.com/v1/company-search?keywords=philips';
    var peopleProfile = 'http://api.linkedin.com/v1/people/~';
    request.get({'proxy':proxySetting,url:apiURL,oauth:apiOAuth},function(e,r,data)
    {
        console.log('Error is: ' + e);
        console.log('Data is: ' + data);
        console.log('Response is: ' + r);
    });
}                                                             

comSearch();

Following is my header

Response is: GET http://api.linkedin.com/v1/company-search?keywords=philips HTTP/1.1
host: api.linkedin.com
Authorization: OAuth keywords="philips",oauth_consumer_key="xxx",oauth_nonce="xxx",oauth_signature_method="HMAC-SHA1",oauth_timestamp="1345189928",oauth_token="xxx",oauth_version="1.0",oauth_signature="xxx"
content-length: 0
Connection: keep-alive

Could there be some error due to the signature issues ?

I have posted this Issue, but posting it here to reach a wider audience

EDIT 1

Reason why I am using the request module is, it helps me do oauth behind a proxy.

I would love to try out Passport.js or node-oauth or linked-in but none seem to have options where I can specify my proxy