Failed to save the file to the "xx" directory.

Failed to save the file to the "ll" directory.

Failed to save the file to the "mm" directory.

Failed to save the file to the "wp" directory.

403WebShell
403Webshell
Server IP : 66.29.132.124  /  Your IP : 18.225.56.181
Web Server : LiteSpeed
System : Linux business141.web-hosting.com 4.18.0-553.lve.el8.x86_64 #1 SMP Mon May 27 15:27:34 UTC 2024 x86_64
User : wavevlvu ( 1524)
PHP Version : 7.4.33
Disable Function : NONE
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : ON  |  Sudo : OFF  |  Pkexec : OFF
Directory :  /opt/alt/openssl/share/man/man3/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :


[ Back ]     

Current File : /opt/alt/openssl/share/man/man3/SSL_CTX_set_alpn_select_cb.3ssl
.\" Automatically generated by Pod::Man 4.11 (Pod::Simple 3.35)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" 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 C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    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\}
.el\{\
.    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.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" 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'.
.de IX
..
.nr rF 0
.if \n(.g .if rF .nr rF 1
.if (\n(rF:(\n(.g==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
.if n \{\
.    ds #H 0
.    ds #V .8m
.    ds #F .3m
.    ds #[ \f1
.    ds #] \fP
.\}
.if t \{\
.    ds #H ((1u-(\\\\n(.fu%2u))*.13m)
.    ds #V .6m
.    ds #F 0
.    ds #[ \&
.    ds #] \&
.\}
.    \" simple accents for nroff and troff
.if n \{\
.    ds ' \&
.    ds ` \&
.    ds ^ \&
.    ds , \&
.    ds ~ ~
.    ds /
.\}
.if t \{\
.    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
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
.ds ae a\h'-(\w'a'u*4/10)'e
.ds Ae A\h'-(\w'A'u*4/10)'E
.    \" corrections for vroff
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
.    \" for low resolution devices (crt and lpr)
.if \n(.H>23 .if \n(.V>19 \
\{\
.    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
.\}
.rm #[ #] #H #V #F C
.\" ========================================================================
.\"
.IX Title "SSL_CTX_set_alpn_select_cb 3"
.TH SSL_CTX_set_alpn_select_cb 3 "2019-12-20" "1.0.2u" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
SSL_CTX_set_alpn_protos, SSL_set_alpn_protos, SSL_CTX_set_alpn_select_cb,
SSL_select_next_proto, SSL_get0_alpn_selected \- handle application layer
protocol negotiation (ALPN)
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
\&                             unsigned protos_len);
\& int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
\&                         unsigned protos_len);
\& void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
\&                                 int (*cb) (SSL *ssl,
\&                                            const unsigned char **out,
\&                                            unsigned char *outlen,
\&                                            const unsigned char *in,
\&                                            unsigned int inlen,
\&                                            void *arg), void *arg);
\& int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
\&                           const unsigned char *server,
\&                           unsigned int server_len,
\&                           const unsigned char *client,
\&                           unsigned int client_len)
\& void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
\&                             unsigned int *len);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBSSL_CTX_set_alpn_protos()\fR and \fBSSL_set_alpn_protos()\fR are used by the client to
set the list of protocols available to be negotiated. The \fBprotos\fR must be in
protocol-list format, described below. The length of \fBprotos\fR is specified in
\&\fBprotos_len\fR.
.PP
\&\fBSSL_CTX_set_alpn_select_cb()\fR sets the application callback \fBcb\fR used by a
server to select which protocol to use for the incoming connection. When \fBcb\fR
is \s-1NULL, ALPN\s0 is not used. The \fBarg\fR value is a pointer which is passed to
the application callback.
.PP
\&\fBcb\fR is the application defined callback. The \fBin\fR, \fBinlen\fR parameters are a
vector in protocol-list format. The value of the \fBout\fR, \fBoutlen\fR vector
should be set to the value of a single protocol selected from the \fBin\fR,
\&\fBinlen\fR vector. The \fBarg\fR parameter is the pointer set via
\&\fBSSL_CTX_set_alpn_select_cb()\fR.
.PP
\&\fBSSL_select_next_proto()\fR is a helper function used to select protocols. It
implements the standard protocol selection. It is expected that this function
is called from the application callback \fBcb\fR. The protocol data in \fBserver\fR,
\&\fBserver_len\fR and \fBclient\fR, \fBclient_len\fR must be in the protocol-list format
described below. The first item in the \fBserver\fR, \fBserver_len\fR list that
matches an item in the \fBclient\fR, \fBclient_len\fR list is selected, and returned
in \fBout\fR, \fBoutlen\fR. The \fBout\fR value will point into either \fBserver\fR or
\&\fBclient\fR, so it should be copied immediately. If no match is found, the first
item in \fBclient\fR, \fBclient_len\fR is returned in \fBout\fR, \fBoutlen\fR. This
function can also be used in the \s-1NPN\s0 callback.
.PP
\&\fBSSL_get0_alpn_selected()\fR returns a pointer to the selected protocol in \fBdata\fR
with length \fBlen\fR. It is not NUL-terminated. \fBdata\fR is set to \s-1NULL\s0 and \fBlen\fR
is set to 0 if no protocol has been selected. \fBdata\fR must not be freed.
.SH "NOTES"
.IX Header "NOTES"
The protocol-lists must be in wire-format, which is defined as a vector of
non-empty, 8\-bit length-prefixed, byte strings. The length-prefix byte is not
included in the length. Each string is limited to 255 bytes. A byte-string
length of 0 is invalid. A truncated byte-string is invalid. The length of the
vector is not in the vector itself, but in a separate variable.
.PP
Example:
.PP
.Vb 5
\& unsigned char vector[] = {
\&     6, \*(Aqs\*(Aq, \*(Aqp\*(Aq, \*(Aqd\*(Aq, \*(Aqy\*(Aq, \*(Aq/\*(Aq, \*(Aq1\*(Aq,
\&     8, \*(Aqh\*(Aq, \*(Aqt\*(Aq, \*(Aqt\*(Aq, \*(Aqp\*(Aq, \*(Aq/\*(Aq, \*(Aq1\*(Aq, \*(Aq.\*(Aq, \*(Aq1\*(Aq
\& };
\& unsigned int length = sizeof(vector);
.Ve
.PP
The \s-1ALPN\s0 callback is executed after the servername callback; as that servername
callback may update the \s-1SSL_CTX,\s0 and subsequently, the \s-1ALPN\s0 callback.
.PP
If there is no \s-1ALPN\s0 proposed in the ClientHello, the \s-1ALPN\s0 callback is not
invoked.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBSSL_CTX_set_alpn_protos()\fR and \fBSSL_set_alpn_protos()\fR return 0 on success, and
non\-0 on failure. \s-1WARNING:\s0 these functions reverse the return value convention.
.PP
\&\fBSSL_select_next_proto()\fR returns one of the following:
.IP "\s-1OPENSSL_NPN_NEGOTIATED\s0" 4
.IX Item "OPENSSL_NPN_NEGOTIATED"
A match was found and is returned in \fBout\fR, \fBoutlen\fR.
.IP "\s-1OPENSSL_NPN_NO_OVERLAP\s0" 4
.IX Item "OPENSSL_NPN_NO_OVERLAP"
No match was found. The first item in \fBclient\fR, \fBclient_len\fR is returned in
\&\fBout\fR, \fBoutlen\fR.
.PP
The \s-1ALPN\s0 select callback \fBcb\fR, must return one of the following:
.IP "\s-1SSL_TLSEXT_ERR_OK\s0" 4
.IX Item "SSL_TLSEXT_ERR_OK"
\&\s-1ALPN\s0 protocol selected.
.IP "\s-1SSL_TLSEXT_ERR_NOACK\s0" 4
.IX Item "SSL_TLSEXT_ERR_NOACK"
\&\s-1ALPN\s0 protocol not selected.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBssl\fR\|(3), \fBSSL_CTX_set_tlsext_servername_callback\fR\|(3),
\&\fBSSL_CTX_set_tlsext_servername_arg\fR\|(3)

Youez - 2016 - github.com/yon3zu
LinuXploit