SSL_SESSION_is_resumable(3)

SSL_SESSION_is_resumable(3) | OpenSSL | SSL_SESSION_is_resumable(3)

# NAME

SSL_SESSION_is_resumable - determine whether an SSL_SESSION object can be used for resumption

# SYNOPSIS

     #include <openssl/ssl.h>
     int SSL_SESSION_is_resumable(const SSL_SESSION *s);

# DESCRIPTION

SSL_SESSION_is_resumable() determines whether an SSL_SESSION object can be used to resume a session or not. Returns 1 if it can or 0 if not. Note that attempting to resume with a non-resumable session will result in a full handshake.

# RETURN VALUES

SSL_SESSION_is_resumable() returns 1 if the session is resumable or 0 otherwise.

# SEE ALSO

ssl(7), SSL_get_session(3), SSL_CTX_sess_set_new_cb(3)

# HISTORY

The SSL_SESSION_is_resumable() function was added in OpenSSL 1.1.1.

# COPYRIGHT

Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.

2026-06-09 | 3.5.7