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