How to Troubleshoot SSL/TLS Handshake Errors When Using cURL?

Troubleshooting SSL/TLS Handshake Errors with cURL

When attempting to execute cURL requests over HTTPS, users may encounter an error message indicating a problem occurring somewhere in the SSL/TLS handshake. This issue can arise even when the same resource is successfully accessed via HTTP.

Solution: Providing Root Certificates

To resolve this error, cURL requires explicit access to a cacert.pem file, which contains the root certificates necessary for verifying SSL certificates. By default, cURL does not include these certificates within its installation.

To specify the location of the cacert.pem file, use the following code:

curl_setopt($ch, CURLOPT_CAINFO, '/path/to/cert/file/cacert.pem');

Obtaining the cacert.pem File

The cacert.pem file can be downloaded from the following URL: http://curl.haxx.se/docs/caextract.html. Once downloaded, place the file in the specified location.

Verified Certificate

By providing the cacert.pem file, cURL can verify the authenticity of the SSL certificate presented by the remote server, resolving the "problem occurred somewhere in the SSL/TLS handshake" error.

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