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SSL_GET_SHARED_CIP... DragonFly Library Functions Manual SSL_GET_SHARED_CIP...

NAME
     SSL_get_shared_ciphers -- ciphers supported by both client and server

SYNOPSIS
     #include <openssl/ssl.h>

     char *
     SSL_get_shared_ciphers(const SSL *ssl, char *buf, int len);

DESCRIPTION
     SSL_get_shared_ciphers() puts the names of the ciphers that are supported
     by both the client and the server of ssl into the buffer buf.  Names are
     separated by colons.  At most len bytes are written to buf including the
     terminating NUL character.

RETURN VALUES
     If ssl contains no session, if the session contains no shared ciphers, or
     if len is less than 2, SSL_get_shared_ciphers() returns NULL.  Otherwise,
     it returns buf.

HISTORY
     SSL_get_shared_ciphers() first appeared in SSLeay 0.4.5b and has been
     available since OpenBSD 2.4.

BUGS
     If the list is too long to fit into len bytes, it is silently truncated
     after the last cipher name that fits, and all following ciphers are
     skipped.  If the buffer is very short such that even the first cipher
     name does not fit, an empty string is returned even when some shared
     ciphers are actually available.

     There is no easy way to find out how much space is required for buf or
     whether the supplied space was sufficient.

DragonFly 5.5			March 27, 2018			 DragonFly 5.5