SSL_SESSION_GET0_PEER(3) | Library Functions Manual | SSL_SESSION_GET0_PEER(3)

# NAME

`SSL_SESSION_get0_peer` — get details about peer's certificate for a session

# SYNOPSIS

library “libssl” libcrypto
`#include <openssl/ssl.h>`

X509 *
`SSL_SESSION_get0_peer`(SSL_SESSION *s);

# DESCRIPTION

`SSL_SESSION_get0_peer`() returns a pointer to the peer certificate associated with the session s or `NULL` if no peer certificate is available. The caller should not free the returned value, unless X509_up_ref(3) has also been called.

# SEE ALSO

ssl(3), SSL_get_session(3), SSL_SESSION_new(3)

# HISTORY

`SSL_SESSION_get0_peer`() first appeared in OpenSSL 1.0.1 and has been available since OpenBSD 5.3.

June 8, 2025 | Debian