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    <title>topic Re: API upload fails. Can not connect to api-content.dropbox.com for 32-th chunk in Dropbox API Support &amp; Feedback</title>
    <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/API-upload-fails-Can-not-connect-to-api-content-dropbox-com-for/m-p/246626#M14053</link>
    <description>The Dropbox API content servers are currently be served properly, and I'm currently able to upload more than 32 20MB-chunks, so it might be an issue with your network connection (or ISP). For example, is there something, such as security software like an anti-virus or firewall, or a malfunctioning proxy, that may be interfering with the connection?</description>
    <pubDate>Thu, 12 Oct 2017 15:52:05 GMT</pubDate>
    <dc:creator>Greg-DB</dc:creator>
    <dc:date>2017-10-12T15:52:05Z</dc:date>
    <item>
      <title>API upload fails. Can not connect to api-content.dropbox.com for 32-th chunk</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/API-upload-fails-Can-not-connect-to-api-content-dropbox-com-for/m-p/246589#M14049</link>
      <description>&lt;P&gt;I use the dropbox API to upload files.&lt;/P&gt;&lt;P&gt;It is latest API version.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Uploading is with chunks of 20MB .&lt;/P&gt;&lt;P&gt;Recently it stopped to work for big files. I notices it stops to work at chunk 32 .&lt;/P&gt;&lt;P&gt;All chunks before this are fine.&amp;nbsp;&lt;/P&gt;&lt;P&gt;And then on nex chunk my script can not connect to to dropbox server&lt;/P&gt;&lt;P&gt;TCP connect to&amp;nbsp;&lt;SPAN&gt;api-content.dropbox.com on a port 443 can not be established. It doesn't fail. It just hungs at connecting (and my timeout 5 sec doesn't affect)&lt;BR /&gt;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;What can it be? Any ideas?&lt;/SPAN&gt;&lt;/P&gt;</description>
      <pubDate>Wed, 29 May 2019 09:18:20 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/API-upload-fails-Can-not-connect-to-api-content-dropbox-com-for/m-p/246589#M14049</guid>
      <dc:creator>Gelembjuk</dc:creator>
      <dc:date>2019-05-29T09:18:20Z</dc:date>
    </item>
    <item>
      <title>Re: API upload fails. Can not connect to api-content.dropbox.com for 32-th chunk</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/API-upload-fails-Can-not-connect-to-api-content-dropbox-com-for/m-p/246626#M14053</link>
      <description>The Dropbox API content servers are currently be served properly, and I'm currently able to upload more than 32 20MB-chunks, so it might be an issue with your network connection (or ISP). For example, is there something, such as security software like an anti-virus or firewall, or a malfunctioning proxy, that may be interfering with the connection?</description>
      <pubDate>Thu, 12 Oct 2017 15:52:05 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/API-upload-fails-Can-not-connect-to-api-content-dropbox-com-for/m-p/246626#M14053</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2017-10-12T15:52:05Z</dc:date>
    </item>
    <item>
      <title>Re: API upload fails. Can not connect to api-content.dropbox.com for 32-th chunk</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/API-upload-fails-Can-not-connect-to-api-content-dropbox-com-for/m-p/247121#M14126</link>
      <description>&lt;P&gt;I have found the workaround .&lt;/P&gt;&lt;P&gt;The reason for this problem is some bug in my system libs or in perl modules.&amp;nbsp;&lt;/P&gt;&lt;P&gt;It is totally not related to dropbox .&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;My Perl code was&lt;/P&gt;&lt;PRE&gt;$socket = new IO::Socket::SSL(PeerAddr =&amp;gt; $host,PeerPort =&amp;gt; 443,Timeout=&amp;gt;5);&amp;nbsp;&lt;/PRE&gt;&lt;P&gt;But because some bug it hungs after 32 connects (each previous socket was closed)&lt;/P&gt;&lt;P&gt;The fix is to set the option to verify certificate&lt;/P&gt;&lt;PRE&gt;$socket=new IO::Socket::SSL(PeerAddr =&amp;gt; $host,PeerPort =&amp;gt; 443,Timeout=&amp;gt;5,SSL_verify_mode =&amp;gt; SSL_VERIFY_NONE);&lt;/PRE&gt;&lt;P&gt;This solves the problem.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Again, it is not related to dropbox. It happens for any SSL connection to other servers too&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Mon, 16 Oct 2017 07:47:13 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/API-upload-fails-Can-not-connect-to-api-content-dropbox-com-for/m-p/247121#M14126</guid>
      <dc:creator>Gelembjuk</dc:creator>
      <dc:date>2017-10-16T07:47:13Z</dc:date>
    </item>
    <item>
      <title>Re: API upload fails. Can not connect to api-content.dropbox.com for 32-th chunk</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/API-upload-fails-Can-not-connect-to-api-content-dropbox-com-for/m-p/247214#M14134</link>
      <description>I'm glad to hear you got this working, but note that disabling SSL certificate verification is not recommended, as that may introduce certain kinds of security vulnerabilities.</description>
      <pubDate>Mon, 16 Oct 2017 15:50:18 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/API-upload-fails-Can-not-connect-to-api-content-dropbox-com-for/m-p/247214#M14134</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2017-10-16T15:50:18Z</dc:date>
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