SSL_CTX_set_new_pending_conn_cb3ssl

Usage

 typedef int (*SSL_set_new_pending_conn_cb_fn)(SSL_CTX *c, SSL *new_ssl,
                                               void *arg);
 void SSL_CTX_set_new_pending_conn_cb(SSL_CTX *c,
                                     SSL_set_new_pending_conn_cb_fn *f,
                                     void *arg);

Overview

SSL_CTX_set_new_pending_conn_cb() sets the new_pending_conn callback function and associated application data argument arg. When using the QUIC transport, TLS handshake processing may occur independently from the thread which accepts the connection that the handshake is establishing. As such, SSL objects representing the connection may be allocated and initialized prior to a call to SSL_accept_connection(). This registered callback may be used to decorate the preallocated SSL object or create other associations with its parent SSL prior to a call to SSL_accept_connection().

Return values

SSL_CTX_set_new_pending_conn_cb() returns no value.

SSL_set_new_pending_conn_cb_fn() returns an integer value. A return value of 0 indicates that the QUIC stack must discard this newly created SSL object, implying that the associated new connection will not be available for handling on a subsequent call to SSL_accept_connection(). A nonzero return value is treated as success, allowing the new connection to be enqueued to the accept queue.

Notes

Callbacks in QUIC connections have some limitations to them that should be taken into consideration when writing an application.