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  <channel>
    <title>topic Re: Getting HTTP 401 on for access_token one some server in Dropbox API Support &amp; Feedback</title>
    <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160584#M5524</link>
    <description>&lt;P&gt;Hi Gregory,&lt;/P&gt;
&lt;P&gt;Thanks for your quick response:&lt;/P&gt;
&lt;P&gt;We call to:&lt;/P&gt;
&lt;PRE&gt;https://api.dropbox.com/1/oauth/access_token?oauth_consumer_key=sbbviyc3ydrd8n4&amp;amp;oauth_nonce=MTY5MDU3MDQ5MzY1MDk2OTYwMA==&amp;amp;oauth_signature_method=HMAC-SHA1&amp;amp;oauth_timestamp=1452581278&amp;amp;oauth_token=UCrgcXsS1mbVjiKX&amp;amp;oauth_token_secret=YYYYY&amp;amp;oauth_version=1.0&amp;amp;oauth_signature=l0H7LPwqnAwwa1cEDhnJpCr13nQ%3D&lt;BR /&gt;&lt;BR /&gt;The Request header:&lt;BR /&gt;&lt;BR /&gt;&lt;/PRE&gt;
&lt;TABLE class=" "&gt;
&lt;TBODY class="netInfoRequestHeadersBody "&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Accept&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Accept-Encoding&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;gzip, deflate&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Accept-Language&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;fr,fr-FR;q=0.8,en-US;q=0.5,en;q=0.3&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Connection&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;keep-alive&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Cookie&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;language=fr; _ga=GA1.2.148585141.1451996517; JSESSIONID=19B84D1F6D6592685286D7FF53B5071F&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;DNT&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;1&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Host&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;ocrqa.iriscloud.irislink.com&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Referer&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;https://www.dropbox.com&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;User-Agent&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;
&lt;P&gt;&lt;CODE class="focusRow subFocusRow "&gt;Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0&lt;/CODE&gt;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;/TD&gt;
&lt;/TR&gt;
&lt;/TBODY&gt;
&lt;/TABLE&gt;
&lt;P&gt;The Response header:&lt;/P&gt;
&lt;TABLE class=" "&gt;
&lt;TBODY class="netInfoResponseHeadersBody "&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Connection&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;close&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Content-Language&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;fr&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Content-Length&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;4241&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Content-Type&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;text/html;charset=utf-8&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Date&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;Tue, 12 Jan 2016 06:47:59 GMT&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Server&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;Apache-Coyote/1.1&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;/TBODY&gt;
&lt;/TABLE&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;As we use a Java servlet to perform POST/GET, the issue arise when post to the URL above when trying to fetch the response:&lt;/P&gt;
&lt;P&gt;Small code sample: &lt;/P&gt;
&lt;P&gt;URL iurl = new URL(url);&lt;/P&gt;
&lt;P&gt;HttpURLConnection uc = null;&lt;BR /&gt;uc = (HttpURLConnection) iurl.openConnection(Proxy.NO_PROXY);&lt;BR /&gt;uc.setAllowUserInteraction(true);&lt;BR /&gt;uc.setInstanceFollowRedirects(true);&lt;BR /&gt;uc.setUseCaches(false);&lt;BR /&gt;uc.setRequestProperty("Connection", "close");&lt;BR /&gt;uc.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)");&lt;BR /&gt;uc.setRequestMethod("POST");&lt;BR /&gt;uc.setDoOutput(false);&lt;BR /&gt;&amp;nbsp;uc.connect();&lt;BR /&gt;&lt;BR /&gt;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Is that what you need ?&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Br,&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;David&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
    <pubDate>Tue, 12 Jan 2016 15:17:01 GMT</pubDate>
    <dc:creator>David S.309</dc:creator>
    <dc:date>2016-01-12T15:17:01Z</dc:date>
    <item>
      <title>Getting HTTP 401 on for access_token one some server</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160582#M5522</link>
      <description>&lt;P&gt;Hi guys,&lt;/P&gt;
&lt;P&gt;We came across a strange issue, when trying to get a access token the the OAuth1 API, the successive calls to "request_token" and "authorize" are working fine, but its is time to access "&lt;A href="https://api.dropbox.com/1/oauth/access_token" rel="nofollow noreferrer" target="_blank"&gt;https://api.dropbox.com/1/oauth/access_token&lt;/A&gt;", we receive an Unauthorized/401 response for the POST.&lt;/P&gt;
&lt;P&gt;What is the more strange is that the exact same code is used on at least one other server without any issues.&lt;/P&gt;
&lt;P&gt;Do you have an idea of what can cause this ? Thanks.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;David.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Wed, 29 May 2019 09:36:53 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160582#M5522</guid>
      <dc:creator>David S.309</dc:creator>
      <dc:date>2019-05-29T09:36:53Z</dc:date>
    </item>
    <item>
      <title>Re: Getting HTTP 401 on for access_token one some server</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160583#M5523</link>
      <description>&lt;P&gt;It's difficult to say off hand. Can you share some sample requests/responses showing the issue in detail? Be sure to redact secret values, but please include the headers/bodies.&amp;nbsp;Thanks in advance!&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Tue, 12 Jan 2016 02:16:25 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160583#M5523</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2016-01-12T02:16:25Z</dc:date>
    </item>
    <item>
      <title>Re: Getting HTTP 401 on for access_token one some server</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160584#M5524</link>
      <description>&lt;P&gt;Hi Gregory,&lt;/P&gt;
&lt;P&gt;Thanks for your quick response:&lt;/P&gt;
&lt;P&gt;We call to:&lt;/P&gt;
&lt;PRE&gt;https://api.dropbox.com/1/oauth/access_token?oauth_consumer_key=sbbviyc3ydrd8n4&amp;amp;oauth_nonce=MTY5MDU3MDQ5MzY1MDk2OTYwMA==&amp;amp;oauth_signature_method=HMAC-SHA1&amp;amp;oauth_timestamp=1452581278&amp;amp;oauth_token=UCrgcXsS1mbVjiKX&amp;amp;oauth_token_secret=YYYYY&amp;amp;oauth_version=1.0&amp;amp;oauth_signature=l0H7LPwqnAwwa1cEDhnJpCr13nQ%3D&lt;BR /&gt;&lt;BR /&gt;The Request header:&lt;BR /&gt;&lt;BR /&gt;&lt;/PRE&gt;
&lt;TABLE class=" "&gt;
&lt;TBODY class="netInfoRequestHeadersBody "&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Accept&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Accept-Encoding&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;gzip, deflate&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Accept-Language&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;fr,fr-FR;q=0.8,en-US;q=0.5,en;q=0.3&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Connection&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;keep-alive&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Cookie&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;language=fr; _ga=GA1.2.148585141.1451996517; JSESSIONID=19B84D1F6D6592685286D7FF53B5071F&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;DNT&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;1&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Host&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;ocrqa.iriscloud.irislink.com&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Referer&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;https://www.dropbox.com&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;User-Agent&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;
&lt;P&gt;&lt;CODE class="focusRow subFocusRow "&gt;Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0&lt;/CODE&gt;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;/TD&gt;
&lt;/TR&gt;
&lt;/TBODY&gt;
&lt;/TABLE&gt;
&lt;P&gt;The Response header:&lt;/P&gt;
&lt;TABLE class=" "&gt;
&lt;TBODY class="netInfoResponseHeadersBody "&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Connection&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;close&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Content-Language&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;fr&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Content-Length&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;4241&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Content-Type&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;text/html;charset=utf-8&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Date&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;Tue, 12 Jan 2016 06:47:59 GMT&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;TR class=" "&gt;
&lt;TD class="netInfoParamName "&gt;&lt;SPAN class=" "&gt;Server&lt;/SPAN&gt;&lt;/TD&gt;
&lt;TD class="netInfoParamValue "&gt;&lt;CODE class="focusRow subFocusRow "&gt;Apache-Coyote/1.1&lt;/CODE&gt;&lt;/TD&gt;
&lt;/TR&gt;
&lt;/TBODY&gt;
&lt;/TABLE&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;As we use a Java servlet to perform POST/GET, the issue arise when post to the URL above when trying to fetch the response:&lt;/P&gt;
&lt;P&gt;Small code sample: &lt;/P&gt;
&lt;P&gt;URL iurl = new URL(url);&lt;/P&gt;
&lt;P&gt;HttpURLConnection uc = null;&lt;BR /&gt;uc = (HttpURLConnection) iurl.openConnection(Proxy.NO_PROXY);&lt;BR /&gt;uc.setAllowUserInteraction(true);&lt;BR /&gt;uc.setInstanceFollowRedirects(true);&lt;BR /&gt;uc.setUseCaches(false);&lt;BR /&gt;uc.setRequestProperty("Connection", "close");&lt;BR /&gt;uc.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)");&lt;BR /&gt;uc.setRequestMethod("POST");&lt;BR /&gt;uc.setDoOutput(false);&lt;BR /&gt;&amp;nbsp;uc.connect();&lt;BR /&gt;&lt;BR /&gt;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Is that what you need ?&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Br,&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;David&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Tue, 12 Jan 2016 15:17:01 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160584#M5524</guid>
      <dc:creator>David S.309</dc:creator>
      <dc:date>2016-01-12T15:17:01Z</dc:date>
    </item>
    <item>
      <title>Re: Getting HTTP 401 on for access_token one some server</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160585#M5525</link>
      <description>&lt;P&gt;A few things to note:&lt;/P&gt;
&lt;P&gt;- Are those all of the response headers? E.g., is there a&amp;nbsp;X-Dropbox-Request-Id header?&lt;/P&gt;
&lt;P&gt;- What's the response body?&lt;/P&gt;
&lt;P&gt;- The response server headers contain unexpected values. E.g., the server header says "Apache-Coyote/1.1", but "nginx" is expected. Is it possible something is interfering with your connection?&lt;/P&gt;
&lt;P&gt;- You're using HMAC-SHA1 signing, which can be hard to implement and debug. We highly&amp;nbsp;recommend using PLAINTEXT instead. &lt;A href="https://blogs.dropbox.com/developers/2012/07/using-oauth-1-0-with-the-plaintext-signature-method/" target="_blank" rel="nofollow noreferrer"&gt;This blog post&lt;/A&gt; may be helpful.&lt;/P&gt;
&lt;P&gt;- You're supplying a&amp;nbsp;oauth_token_secret parameter, which isn't expected.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Wed, 13 Jan 2016 02:11:47 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160585#M5525</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2016-01-13T02:11:47Z</dc:date>
    </item>
    <item>
      <title>Re: Getting HTTP 401 on for access_token one some server</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160586#M5526</link>
      <description>&lt;P&gt;Hi,&lt;/P&gt;
&lt;P&gt;In fact, we use a Java servlet (in a Apache Tomcat) to perform the call/Authorization flow.&lt;/P&gt;
&lt;P&gt;I will look to get the Response Header more precisely. I will also look to use PLAINTEXT instead of HMAC-SHA1. The only things that bothers the team I'm in is that the existing code works flawlessly on at least two other servers.&lt;/P&gt;
&lt;P&gt;I will post the response headers field value asap.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Thanks for your time.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;David.&lt;/P&gt;</description>
      <pubDate>Wed, 13 Jan 2016 16:04:33 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160586#M5526</guid>
      <dc:creator>David S.309</dc:creator>
      <dc:date>2016-01-13T16:04:33Z</dc:date>
    </item>
    <item>
      <title>Re: Getting HTTP 401 on for access_token one some server</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160587#M5527</link>
      <description>&lt;P&gt;Hi,&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Re-writing the OAuth part to use authorization header (instead of URL parameters) and using PLAINTEXT instead of HMAC-SHA1 for the signature have solved the issue.&lt;/P&gt;
&lt;P&gt;Thanks for you time and quick answers !&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Br,&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;David.&lt;/P&gt;</description>
      <pubDate>Fri, 15 Jan 2016 14:01:12 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Getting-HTTP-401-on-for-access-token-one-some-server/m-p/160587#M5527</guid>
      <dc:creator>David S.309</dc:creator>
      <dc:date>2016-01-15T14:01:12Z</dc:date>
    </item>
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