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=pod
=head1 NAME
SSL_get_peer_cert_chain - get the X509 certificate chain of the peer
=head1 SYNOPSIS
#include <openssl/ssl.h>
STACKOF(X509) *SSL_get_peer_cert_chain(const SSL *ssl);
=head1 DESCRIPTION
SSL_get_peer_cert_chain() returns a pointer to STACKOF(X509) certificates
forming the certificate chain of the peer. If called on the client side,
the stack also contains the peer's certificate; if called on the server
side, the peer's certificate must be obtained separately using
L<SSL_get_peer_certificate(3)|SSL_get_peer_certificate(3)>.
If the peer did not present a certificate, NULL is returned.
=head1 NOTES
The peer certificate chain is not necessarily available after reusing
a session, in which case a NULL pointer is returned.
The reference count of the STACKOF(X509) object is not incremented.
If the corresponding session is freed, the pointer must not be used
any longer.
=head1 RETURN VALUES
The following return values can occur:
=over 4
=item NULL
No certificate was presented by the peer or no connection was established
or the certificate chain is no longer available when a session is reused.
=item Pointer to a STACKOF(X509)
The return value points to the certificate chain presented by the peer.
=back
=head1 SEE ALSO
L<ssl(3)|ssl(3)>, L<SSL_get_peer_certificate(3)|SSL_get_peer_certificate(3)>
=cut
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