Re: Is there a way to tell s_client to just "send a command" and quit?

On Fri, Sep 26, 2025 at 09:36:24AM +0200, Jochen Bern wrote:

> A truly picky one with name-based virtual hosts, on the other hand, needs
> something like
> 
> ( echo -e 'GET / HTTP/1.1\r' ; echo -e 'Host: foo.bar\r' ; echo -e
> 'Connection: close\r' ; echo -e '\r' ; sleep 5 ) | openssl s_client -connect
> foo.bar:443 -servername foo.bar ...

It seems you may be unaware of the `-crlf` option of openssl-s_client(1).

    host="foo.bar"
    (
        printf 'GET / HTTP/1.1\nHost: %s\nConnection: close\n\n' "$host"
        sleep 5
    ) | openssl s_client -crlf -nocommands -connect "$host:443" -servername "$host" ...

-- 
    Viktor.  🇺🇦 Слава Україні!

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