46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
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=pod
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=head1 NAME
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SSL_waiting_for_async, SSL_get_async_wait_fd - manage asynchronous operations
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=head1 SYNOPSIS
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#include <openssl/ssl.h>
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int SSL_waiting_for_async(SSL *s);
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int SSL_get_async_wait_fd(SSL *s);
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=head1 DESCRIPTION
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SSL_waiting_for_async() determines whether an SSL connection is currently
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waiting for asynchronous operations to complete (see the SSL_MODE_ASYNC mode in
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L<SSL_CTX_set_mode(3)>).
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SSL_get_async_wait_fd() returns a file descriptor which can be used in a call to
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select() or poll() to determine whether the current asynchronous operation has
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completed or not. A completed operation will result in data appearing as
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available on the file descriptor (no actual data should be read from the file
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descriptor). This function should only be called if the SSL object is currently
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waiting for asynchronous work to complete (i.e. SSL_ERROR_WANT_ASYNC has been
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received - see L<SSL_get_error(3)>).
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=head1 RETURN VALUES
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SSL_waiting_for_async() will return 1 if the current SSL operation is waiting
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for an async operation to complete and 0 otherwise.
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SSL_get_async_wait_fd() will return a file descriptor that can be used in a call
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to select() or poll() to wait for asynchronous work to complete, or -1 on error.
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=head1 SEE ALSO
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L<SSL_get_error(3)>, L<SSL_CTX_set_mode(3)>
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=head1 HISTORY
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SSL_waiting_for_async() and SSL_get_async_wait_fd() were first added to
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OpenSSL 1.1.0
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=cut
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