curl / Mailing Lists / curl-users / Single Mail
Buy commercial curl support from WolfSSL. We help you work out your issues, debug your libcurl applications, use the API, port to new platforms, add new features and more. With a team lead by the curl founder himself.

Re: SSL_ERROR_SYSCALL in connection to

From: Daniel Stenberg via curl-users <>
Date: Thu, 14 Nov 2019 07:37:45 +0100 (CET)

On Wed, 13 Nov 2019, Paulo Roberto Tomasi via curl-users wrote:

> When I try curl -v -I


> curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to

We should work on improving that particular error message to also say what
we can figure out from errno. But in most cases, this is openssl's way of
saying that the connection was unexpectedly closed.

Also interesting: I don't get this problem with the exact same command line
from my machine(s) (I tried from three different ones, using different curl
versions, one test even from this airport wifi).

  / | Get the best commercial curl support there is - from me
                   | Private help, bug fixes, support, ports, new features
Received on 2019-11-14