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POStrange timeout with PHP cURL and SSL
 

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    <p>I'm experiencing strange timeouts using cURL with PHP when trying to access Amazon Cloudfront. This seems to affect all invalidation requests, creating distributions etc. cURL either reports receiving 0 bytes, or very few bytes, and then time-out: <code>Operation timed out after 120000 milliseconds with 88 out of 619 bytes received</code>. </p> <p>Extending the timeout settings does not seem to make a difference.</p> <p>Putting a trace using <code>CURLOPT_VERBOSE</code> produces this output:</p> <pre><code>* About to connect() to cloudfront.amazonaws.com port 443 (#0) * Trying 72.21.215.67... * connected * Connected to cloudfront.amazonaws.com (72.21.215.67) port 443 (#0) * skipping SSL peer certificate verification * SSL connection using SSL_RSA_WITH_RC4_128_MD5 * Server certificate: * subject: CN=cloudfront.amazonaws.com,O=Amazon.com Inc.,L=Seattle,ST=Washington,C=US * start date: Jul 30 00:00:00 2010 GMT * expire date: Jul 29 23:59:59 2013 GMT * common name: cloudfront.amazonaws.com * issuer: CN=VeriSign Class 3 Secure Server CA - G2,OU=Terms of use at https://www.verisign.com/rpa (c)09,OU=VeriSign Trust Network,O="VeriSign, Inc.",C=US &gt; POST /2010-11-01/distribution/E1CIM4A92QFD98/invalidation HTTP/1.1 User-Agent: S3/php Accept: */* Host: cloudfront.amazonaws.com Date: Wed, 07 Mar 2012 14:31:58 GMT Content-Type: application/xml Authorization: AWS ************************ Content-Length: 200 &lt; HTTP/1.1 201 Created &lt; x-amzn-RequestId: 4c2d0d3f-6862-11e1-ac27-5531ac8c967f &lt; Location: https://cloudfront.amazonaws.com/2010-11-01/distribution/E1CIM4A92QFD98/invalidation/I35KLNROKA40FU * Operation timed out after 120000 milliseconds with 0 bytes received * Closing connection #0 </code></pre> <p>This seems similar to <a href="https://stackoverflow.com/q/2950417/305019">this question</a>. However, it looks like in my case curl does in fact get a response, but somehow ignores it and times-out? From what I see, the response is received (<code>201 Created</code>...), and there are no SSL errors. So why does curl time-out??</p> <p>cURL version info</p> <pre><code>[version_number] =&gt; 463623 [age] =&gt; 3 [features] =&gt; 1597 [ssl_version_number] =&gt; 0 [version] =&gt; 7.19.7 [host] =&gt; x86_64-unknown-linux-gnu [ssl_version] =&gt; NSS/3.12.7.0 [libz_version] =&gt; 1.2.3 [protocols] =&gt; Array ( [0] =&gt; tftp [1] =&gt; ftp [2] =&gt; telnet [3] =&gt; dict [4] =&gt; ldap [5] =&gt; ldaps [6] =&gt; http [7] =&gt; file [8] =&gt; https [9] =&gt; ftps [10] =&gt; scp [11] =&gt; sftp ) </code></pre>
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    1. COIt says `Content-Type: application/xml` and `Content-Length: 200` and then `with 0 bytes received`... it seems the **response headers** arrived, but not this 200 bytes XML **response body**.
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    2. COTry disabling firewall only to make a test and seeing what happens.
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    3. COThanks @J.Bruni. I believe the `Content-Length` header is for the request, and if you look further, there is a response from the server (`HTTP/1.1 201 Created`), with the Location header. The `with 0 bytes received` is exactly the problem. It did receive some bytes but curl ignores them and times-out...There is no firewall
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