xref: /openssl/doc/man3/DTLS_get_data_mtu.pod (revision fc5ecadd)
1=pod
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3=head1 NAME
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5DTLS_get_data_mtu - Get maximum data payload size
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7=head1 SYNOPSIS
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9 #include <openssl/ssl.h>
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11 size_t DTLS_get_data_mtu(const SSL *ssl);
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13=head1 DESCRIPTION
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15This function obtains the maximum data payload size for the established
16DTLS connection B<ssl>, based on the DTLS record MTU and the overhead
17of the DTLS record header, encryption and authentication currently in use.
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19=head1 RETURN VALUES
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21Returns the maximum data payload size on success, or 0 on failure.
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23=head1 HISTORY
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25The DTLS_get_data_mtu() function was added in OpenSSL 1.1.1.
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27=head1 COPYRIGHT
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29Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
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31Licensed under the Apache License 2.0 (the "License").  You may not use
32this file except in compliance with the License.  You can obtain a copy
33in the file LICENSE in the source distribution or at
34L<https://www.openssl.org/source/license.html>.
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36=cut
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