int gnutls_heartbeat_ping(gnutls_session_t session, size_t data_size, unsigned int max_tries, unsigned int flags);
- gnutls_session_t session
is a gnutls_session_t type.
- size_t data_size
is the length of the ping payload.
- unsigned int max_tries
if flags is GNUTLS_HEARTBEAT_WAIT then this sets the number of retransmissions. Use zero for indefinite (until timeout).
- unsigned int flags
if GNUTLS_HEARTBEAT_WAIT then wait for pong or timeout instead of returning immediately.
This function sends a ping to the peer. If the flags is set to GNUTLS_HEARTBEAT_WAIT then it waits for a reply from the peer.
Note that it is highly recommended to use this function with the flag GNUTLS_HEARTBEAT_WAIT, or you need to handle retransmissions and timeouts manually.
The total TLS data transmitted as part of the ping message are given by the following formula: MAX(16, data_size )+gnutls_record_overhead_size()+3.
GNUTLS_E_SUCCESS on success, otherwise a negative error code.
Report bugs to <email@example.com>.
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