2022-11-15 02:13:35 +08:00
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=pod
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=head1 NAME
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SSL_set_initial_peer_addr - set the initial peer address for a QUIC connection
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=head1 SYNOPSIS
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#include <openssl/ssl.h>
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__owur int SSL_set_initial_peer_addr(SSL *s, const BIO_ADDR *addr);
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=head1 DESCRIPTION
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SSL_set_initial_peer_addr() sets the initial destination peer address to be used
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for the purposes of establishing a QUIC connection in client mode. This function
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can be used only on a QUIC connection SSL object, and can be used only before a
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connection attempt is first made. B<addr> must point to a B<BIO_ADDR>
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representing a UDP destination address of the server to connect to.
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2022-11-30 16:04:34 +08:00
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Where a QUIC connection object is provided with a write BIO which supports the
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B<BIO_CTRL_DGRAM_GET_PEER> control (for example, B<BIO_s_dgram>), the initial
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destination peer address can be detected automatically; if
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B<BIO_CTRL_DGRAM_GET_PEER> returns a valid (non-B<AF_UNSPEC>) peer address and
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no valid peer address has yet been set, this will be set automatically as the
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initial peer address. This behaviour can be overridden by calling
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SSL_set_initial_peer_addr() with a valid peer address explicitly.
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2022-11-15 02:13:35 +08:00
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The destination address used by QUIC may change over time in response to
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connection events, such as connection migration (where supported).
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SSL_set_initial_peer_addr() configures the destination address used for initial
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connection establishment, and does not confer any guarantee about the
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destination address being used for communication at any later time in the
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connection lifecycle.
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=head1 RETURN VALUES
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Returns 1 on success and 0 on failure.
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=head1 SEE ALSO
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L<BIO_ADDR(3)>, L<ssl(7)>
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=head1 HISTORY
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The SSL_set_initial_peer_addr() function was added in OpenSSL 3.2.
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=head1 COPYRIGHT
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Copyright 2000-2022 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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