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    <title>topic OAuth2 Redirect Url in Discuss Dropbox Developer &amp; API</title>
    <link>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/OAuth2-Redirect-Url/m-p/430199#M1303</link>
    <description>&lt;P&gt;Hello there,&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;For the Oauth2 bewlow&lt;/P&gt;&lt;P&gt;&lt;A href="https://api.dropbox.com/1/oauth2/authorize?response_type=code&amp;amp;client_id=zzzzzzzzzzz&amp;amp;redirect_uri=https://localhost:44332/Login?Cloud=DROP&amp;amp;ClientId=393903" target="_blank" rel="noopener"&gt;https://api.dropbox.com/1/oauth2/authorize?response_type=code&amp;amp;client_id=zzzzzzzzzzz&amp;amp;redirect_uri=https://localhost:44332/Login?Cloud=DROP&amp;amp;ClientId=393903&lt;/A&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;It is saying ClientId is invalid.&amp;nbsp;&lt;/P&gt;&lt;P&gt;The app has the same redirect url:&amp;nbsp;https://localhost:44332/Login?Cloud=DROP&amp;amp;ClientId=393903&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Could you please advise wether it is possible to add extra parameters and only the first one is accepted (Cloud) so far.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Error is:&lt;/P&gt;&lt;P&gt;More details for developers&lt;/P&gt;&lt;P&gt;unknown field "ClientId"&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Please let me know!&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Thanks&lt;/P&gt;</description>
    <pubDate>Tue, 16 Jun 2020 14:25:48 GMT</pubDate>
    <dc:creator>IQCloud</dc:creator>
    <dc:date>2020-06-16T14:25:48Z</dc:date>
    <item>
      <title>OAuth2 Redirect Url</title>
      <link>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/OAuth2-Redirect-Url/m-p/430199#M1303</link>
      <description>&lt;P&gt;Hello there,&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;For the Oauth2 bewlow&lt;/P&gt;&lt;P&gt;&lt;A href="https://api.dropbox.com/1/oauth2/authorize?response_type=code&amp;amp;client_id=zzzzzzzzzzz&amp;amp;redirect_uri=https://localhost:44332/Login?Cloud=DROP&amp;amp;ClientId=393903" target="_blank" rel="noopener"&gt;https://api.dropbox.com/1/oauth2/authorize?response_type=code&amp;amp;client_id=zzzzzzzzzzz&amp;amp;redirect_uri=https://localhost:44332/Login?Cloud=DROP&amp;amp;ClientId=393903&lt;/A&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;It is saying ClientId is invalid.&amp;nbsp;&lt;/P&gt;&lt;P&gt;The app has the same redirect url:&amp;nbsp;https://localhost:44332/Login?Cloud=DROP&amp;amp;ClientId=393903&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Could you please advise wether it is possible to add extra parameters and only the first one is accepted (Cloud) so far.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Error is:&lt;/P&gt;&lt;P&gt;More details for developers&lt;/P&gt;&lt;P&gt;unknown field "ClientId"&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Please let me know!&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Thanks&lt;/P&gt;</description>
      <pubDate>Tue, 16 Jun 2020 14:25:48 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/OAuth2-Redirect-Url/m-p/430199#M1303</guid>
      <dc:creator>IQCloud</dc:creator>
      <dc:date>2020-06-16T14:25:48Z</dc:date>
    </item>
    <item>
      <title>Re: OAuth2 Redirect Url</title>
      <link>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/OAuth2-Redirect-Url/m-p/430206#M1304</link>
      <description>&lt;P&gt;It sounds like you're not URL encoding the 'redirect_uri' value, and so the URL parameters on your redirect URI are being sent as actual URL parameters to the Dropbox /oauth2/authorize app authorization page itself, which does not expect those parameters.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;You'll need to URL encode your 'redirect_uri' value. For example, for the sample you included here, that would be:&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;PRE&gt;https%3A%2F%2Flocalhost%3A44332%2FLogin%3FCloud%3DDROP%26ClientId%3D393903
&lt;/PRE&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Also, note that per &lt;A href="https://www.dropbox.com/developers/documentation/http/documentation#oauth2-authorize" target="_self"&gt;the documentation&lt;/A&gt;, the app authorization page should be accessed at&amp;nbsp;&lt;A href="https://www.dropbox.com/oauth2/authorize" target="_blank"&gt;https://www.dropbox.com/oauth2/authorize&lt;/A&gt; (not on&amp;nbsp;api.dropbox.com).&lt;/P&gt;</description>
      <pubDate>Tue, 16 Jun 2020 14:41:51 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/OAuth2-Redirect-Url/m-p/430206#M1304</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2020-06-16T14:41:51Z</dc:date>
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