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dbd007d7d2
Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Paul Dale <paul.dale@oracle.com> Reviewed-by: Andy Polyakov <appro@openssl.org> Reviewed-by: Rich Salz <rsalz@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4036)
78 lines
2.6 KiB
Plaintext
78 lines
2.6 KiB
Plaintext
=pod
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=head1 NAME
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SSL_set_connect_state, SSL_set_accept_state, SSL_is_server
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- functions for manipulating and examining the client or server mode of an SSL object
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=head1 SYNOPSIS
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#include <openssl/ssl.h>
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void SSL_set_connect_state(SSL *ssl);
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void SSL_set_accept_state(SSL *ssl);
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int SSL_is_server(const SSL *ssl);
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=head1 DESCRIPTION
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SSL_set_connect_state() sets B<ssl> to work in client mode.
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SSL_set_accept_state() sets B<ssl> to work in server mode.
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SSL_is_server() checks if B<ssl> is working in server mode.
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=head1 NOTES
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When the SSL_CTX object was created with L<SSL_CTX_new(3)>,
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it was either assigned a dedicated client method, a dedicated server
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method, or a generic method, that can be used for both client and
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server connections. (The method might have been changed with
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L<SSL_CTX_set_ssl_version(3)> or
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L<SSL_set_ssl_method(3)>.)
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When beginning a new handshake, the SSL engine must know whether it must
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call the connect (client) or accept (server) routines. Even though it may
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be clear from the method chosen, whether client or server mode was
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requested, the handshake routines must be explicitly set.
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When using the L<SSL_connect(3)> or
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L<SSL_accept(3)> routines, the correct handshake
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routines are automatically set. When performing a transparent negotiation
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using L<SSL_write_ex(3)>, L<SSL_write(3)>, L<SSL_read_ex(3)>, or L<SSL_read(3)>,
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the handshake routines must be explicitly set in advance using either
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SSL_set_connect_state() or SSL_set_accept_state().
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If SSL_is_server() is called before SSL_set_connect_state() or
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SSL_set_accept_state() is called (either automatically or explicitly),
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the result depends on what method was used when SSL_CTX was created with
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L<SSL_CTX_new(3)>. If a generic method or a dedicated server method was
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passed to L<SSL_CTX_new(3)>, SSL_is_server() returns 1; otherwise, it returns 0.
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=head1 RETURN VALUES
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SSL_set_connect_state() and SSL_set_accept_state() do not return diagnostic
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information.
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SSL_is_server() returns 1 if B<ssl> is working in server mode or 0 for client mode.
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=head1 SEE ALSO
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L<ssl(7)>, L<SSL_new(3)>, L<SSL_CTX_new(3)>,
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L<SSL_connect(3)>, L<SSL_accept(3)>,
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L<SSL_write_ex(3)>, L<SSL_write(3)>, L<SSL_read_ex(3)>, L<SSL_read(3)>,
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L<SSL_do_handshake(3)>,
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L<SSL_CTX_set_ssl_version(3)>
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=head1 COPYRIGHT
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Copyright 2001-2017 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the OpenSSL license (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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