SSL_GET_DEFAULT_TIMEOUT(3) | Library Functions Manual | SSL_GET_DEFAULT_TIMEOUT(3)

# NAME

`SSL_get_default_timeout` — get default session timeout value

# SYNOPSIS

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

long
`SSL_get_default_timeout`(const SSL *ssl);

# DESCRIPTION

`SSL_get_default_timeout`() returns the default timeout value assigned to SSL_SESSION objects negotiated for the protocol valid for ssl.

Whenever a new session is negotiated, it is assigned a timeout value, after which it will not be accepted for session reuse. If the timeout value was not explicitly set using SSL_CTX_set_timeout(3), the hardcoded default timeout for the protocol will be used.

`SSL_get_default_timeout`() return this hardcoded value, which is 300 seconds for all currently supported protocols (SSLv2, SSLv3, and TLSv1).

# SEE ALSO

ssl(3), SSL_CTX_flush_sessions(3), SSL_CTX_set_session_cache_mode(3), SSL_SESSION_get_time(3)

# HISTORY

`SSL_get_default_timeout`() first appeared in SSLeay 0.8.0 and has been available since OpenBSD 2.4.

June 8, 2025 | Debian