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give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
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Title "SSL_SET_FD 3"
way too many mistakes in technical documents.
Standard preamble:
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.... Set up some character translations and predefined strings. \*(-- will
give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
double quote, and \*(R" will give a right double quote. \*(C+ will
give a nicer C++. Capital omega is used to do unbreakable dashes and
therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
nothing in troff, for use with C<>.
.tr \(*W- . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\}
Escape single quotes in literal strings from groff's Unicode transform.
If the F register is >0, we'll generate index entries on stderr for
titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
entries marked with X<> in POD. Of course, you'll have to process the
output yourself in some meaningful fashion.
Avoid warning from groff about undefined register 'F'.
.. .nr rF 0 . if \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} . \} .\} .rr rF
Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
Fear. Run. Save yourself. No user-serviceable parts.
. \" fudge factors for nroff and troff . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] .\} . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents . \" corrections for vroff . \" for low resolution devices (crt and lpr) \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} ========================================================================
Title "SSL_SET_FD 3"
SSL_SET_FD 3 "2023-05-30" "1.1.1u" "OpenSSL"
For nroff, turn off justification. Always turn off hyphenation; it makesway too many mistakes in technical documents.
"NAME"
SSL_set_fd, SSL_set_rfd, SSL_set_wfd - connect the SSL object with a file descriptor
"SYNOPSIS"
Header "SYNOPSIS" .Vb 1
#include <openssl/ssl.h>
\&
int SSL_set_fd(SSL *ssl, int fd);
int SSL_set_rfd(SSL *ssl, int fd);
int SSL_set_wfd(SSL *ssl, int fd);
.Ve
"DESCRIPTION"
Header "DESCRIPTION" \fBSSL_set_fd() sets the file descriptor fd as the input/output facility
for the \s-1TLS/SSL\s0 (encrypted) side of ssl. fd will typically be the
socket file descriptor of a network connection.
When performing the operation, a socket \s-1BIO\s0 is automatically created to interface between the ssl and fd. The \s-1BIO\s0 and hence the \s-1SSL\s0 engine inherit the behaviour of fd. If fd is nonblocking, the ssl will also have nonblocking behaviour.
If there was already a \s-1BIO\s0 connected to ssl, BIO_free() will be called (for both the reading and writing side, if different).
\fBSSL_set_rfd() and SSL_set_wfd() perform the respective action, but only for the read channel or the write channel, which can be set independently.
"RETURN VALUES"
Header "RETURN VALUES" The following return values can occur:
"0" 4
The operation failed. Check the error stack to find out why.
"1" 4
Item "1" The operation succeeded.
"NOTES"
Header "NOTES" On Windows, a socket handle is a 64-bit data type (\s-1UINT_PTR\s0), which leads to a
compiler warning (conversion from '\s-1SOCKET\s0' to 'int', possible loss of data) when
passing the socket handle to SSL_set_*fd(). For the time being, this warning can
safely be ignored, because although the Microsoft documentation claims that the
upper limit is \s-1INVALID_SOCKET-1\s0 (2^64 - 2), in practice the current socket()
implementation returns an index into the kernel handle table, the size of which
is limited to 2^24.
"SEE ALSO"
Header "SEE ALSO" \fBSSL_get_fd\|(3), SSL_set_bio\|(3),
\fBSSL_connect\|(3), SSL_accept\|(3),
\fBSSL_shutdown\|(3), ssl\|(7) , bio\|(7)
"COPYRIGHT"
Header "COPYRIGHT" Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.