mirror of
https://github.com/openssl/openssl.git
synced 2024-12-03 05:41:46 +08:00
05a6347fec
Add some clarifications to the async documentation. Also changed ASYNC_pause_job() so that it returns success if you are not within the context of a job. This is so that engines can be used either asynchronously or synchronously and can treat an error from ASYNC_pause_job() as a real error. Reviewed-by: Rich Salz <rsalz@openssl.org>
46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
SSL_waiting_for_async, SSL_get_async_wait_fd - manage asynchronous operations
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/ssl.h>
|
|
|
|
int SSL_waiting_for_async(SSL *s);
|
|
int SSL_get_async_wait_fd(SSL *s);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
SSL_waiting_for_async() determines whether an SSL connection is currently
|
|
waiting for asynchronous operations to complete (see the SSL_MODE_ASYNC mode in
|
|
L<SSL_CTX_set_mode(3)>).
|
|
|
|
SSL_get_async_wait_fd() returns a file descriptor which can be used in a call to
|
|
select() or poll() to determine whether the current asynchronous operation has
|
|
completed or not. A completed operation will result in data appearing as
|
|
"read ready" on the file descriptor (no actual data should be read from the
|
|
file descriptor). This function should only be called if the SSL object is
|
|
currently waiting for asynchronous work to complete (i.e. SSL_ERROR_WANT_ASYNC
|
|
has been received - see L<SSL_get_error(3)>).
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
SSL_waiting_for_async() will return 1 if the current SSL operation is waiting
|
|
for an async operation to complete and 0 otherwise.
|
|
|
|
SSL_get_async_wait_fd() will return a file descriptor that can be used in a call
|
|
to select() or poll() to wait for asynchronous work to complete, or -1 on error.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<SSL_get_error(3)>, L<SSL_CTX_set_mode(3)>
|
|
|
|
=head1 HISTORY
|
|
|
|
SSL_waiting_for_async() and SSL_get_async_wait_fd() were first added to
|
|
OpenSSL 1.1.0
|
|
|
|
=cut
|