Re: Fwd: how do I know the curl I am using has TLSv1.3 support or not ?

Daniel Stenberg via curl-users <[email protected]>
Newsgroups gmane.comp.web.curl.general
Message-ID <[email protected]>
On Wed, 17 May 2023, M K Saravanan via curl-users wrote:

> $ curl --version
> curl 7.81.0 (x86_64-pc-linux-gnu) libcurl/7.81.0 OpenSSL/3.0.2 zlib/1.2.11
> brotli/1.0.9 zstd/1.4.8 libidn2/2.3.2 libpsl/0.21.0 (+libidn2/2.3.2)
> libssh/0.9.6/openssl/zlib nghttp2/1.43.0 librtmp/2.3 OpenLDAP/2.5.14
> Release-Date: 2022-01-05
> Protocols: dict file ftp ftps gopher gophers http https imap imaps ldap
> ldaps mqtt pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp
> Features: alt-svc AsynchDNS brotli GSS-API HSTS HTTP2 HTTPS-proxy IDN IPv6
> Kerberos Largefile libz NTLM NTLM_WB PSL SPNEGO SSL TLS-SRP UnixSockets zstd

> How do I know whether the version of curl I am using has TLSv1.3 support or
> not? What keyword to look for?

OpenSSL/3.0.2 is probably the best clue. OpenSSL version 3.0.2 has TLS 1.3 
support.

Basically anything made with pride within the last years has TLS 1.3 support. 
TLS-using components without it should be dropped.

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