.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.42)
.\"
.\" 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
.\" 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 "OCSP_SENDREQ_NEW 3ossl"
.TH OCSP_SENDREQ_NEW 3ossl "2023-09-19" "3.0.11" "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"
OCSP_REQ_CTX,
OCSP_sendreq_new,
OCSP_sendreq_nbio,
OCSP_sendreq_bio,
OCSP_REQ_CTX_i2d,
OCSP_REQ_CTX_add1_header,
OCSP_REQ_CTX_free,
OCSP_set_max_response_length,
OCSP_REQ_CTX_set1_req
\&\- OCSP responder query functions
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ocsp.h>
\&
\& OSSL_HTTP_REQ_CTX *OCSP_sendreq_new(BIO *io, const char *path,
\&                                     const OCSP_REQUEST *req, int buf_size);
\& OCSP_RESPONSE *OCSP_sendreq_bio(BIO *io, const char *path, OCSP_REQUEST *req);
.Ve
.PP
The following functions have been deprecated since OpenSSL 3.0, and can be
hidden entirely by defining \fB\s-1OPENSSL_API_COMPAT\s0\fR with a suitable version value,
see \fBopenssl_user_macros\fR\|(7):
.PP
.Vb 8
\& typedef OSSL_HTTP_REQ_CTX OCSP_REQ_CTX;
\& int OCSP_sendreq_nbio(OCSP_RESPONSE **presp, OSSL_HTTP_REQ_CTX *rctx);
\& int OCSP_REQ_CTX_i2d(OCSP_REQ_CT *rctx, const ASN1_ITEM *it, ASN1_VALUE *req);
\& int OCSP_REQ_CTX_add1_header(OCSP_REQ_CT *rctx,
\&                              const char *name, const char *value);
\& void OCSP_REQ_CTX_free(OCSP_REQ_CTX *rctx);
\& void OCSP_set_max_response_length(OCSP_REQ_CT *rctx, unsigned long len);
\& int OCSP_REQ_CTX_set1_req(OCSP_REQ_CTX *rctx, const OCSP_REQUEST *req);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
These functions perform an \s-1OCSP POST\s0 request / response transfer over \s-1HTTP,\s0
using the \s-1HTTP\s0 request functions described in \s-1\fBOSSL_HTTP_REQ_CTX\s0\fR\|(3).
.PP
The function \fBOCSP_sendreq_new()\fR builds a complete \fB\s-1OSSL_HTTP_REQ_CTX\s0\fR structure
with the \fB\s-1BIO\s0\fR \fIio\fR to be used for requests and response, the \s-1URL\s0 path \fIpath\fR,
optionally the \s-1OCSP\s0 request \fIreq\fR, and a response header maximum line length
of \fIbuf_size\fR. If \fIbuf_size\fR is zero a default value of 4KiB is used.
The \fIreq\fR may be set to \s-1NULL\s0 and provided later using \fBOCSP_REQ_CTX_set1_req()\fR
or \fBOSSL_HTTP_REQ_CTX_set1_req\fR\|(3).
The \fIio\fR and \fIpath\fR arguments to \fBOCSP_sendreq_new()\fR correspond to the
components of the \s-1URL.\s0
For example if the responder \s-1URL\s0 is \f(CW\*(C`http://example.com/ocspreq\*(C'\fR the \s-1BIO\s0
\&\fIio\fR should haven been connected to host \f(CW\*(C`example.com\*(C'\fR on port 80 and \fIpath\fR
should be set to \f(CW\*(C`/ocspreq\*(C'\fR.
.PP
\&\fBOCSP_sendreq_nbio()\fR attempts to send the request prepared in \fIrctx\fR
and to gather the response via \s-1HTTP,\s0 using the \s-1BIO\s0 \fIio\fR and \fIpath\fR
that were given when calling \fBOCSP_sendreq_new()\fR.
If the operation gets completed it assigns the response,
a pointer to a \fB\s-1OCSP_RESPONSE\s0\fR structure, in \fI*presp\fR.
The function may need to be called again if its result is \-1, which indicates
\&\fBBIO_should_retry\fR\|(3).  In such a case it is advisable to sleep a little in
between, using \fBBIO_wait\fR\|(3) on the read \s-1BIO\s0 to prevent a busy loop.
.PP
\&\fBOCSP_sendreq_bio()\fR combines \fBOCSP_sendreq_new()\fR with as many calls of
\&\fBOCSP_sendreq_nbio()\fR as needed and then \fBOCSP_REQ_CTX_free()\fR, with a
response header maximum line length 4k. It waits indefinitely on a response.
It does not support setting a timeout or adding headers and is retained
for compatibility; use \fBOSSL_HTTP_transfer\fR\|(3) instead.
.PP
OCSP_REQ_CTX_i2d(rctx, it, req) is equivalent to the following:
.PP
.Vb 1
\&  OSSL_HTTP_REQ_CTX_set1_req(rctx, "application/ocsp\-request", it, req)
.Ve
.PP
OCSP_REQ_CTX_set1_req(rctx, req) is equivalent to the following:
.PP
.Vb 3
\& OSSL_HTTP_REQ_CTX_set1_req(rctx, "application/ocsp\-request",
\&                            ASN1_ITEM_rptr(OCSP_REQUEST),
\&                            (const ASN1_VALUE *)req)
.Ve
.PP
The deprecated type and the remaining deprecated functions
have been superseded by the following equivalents:
\&\fB\s-1OCSP_REQ_CTX\s0\fR by \s-1\fBOSSL_HTTP_REQ_CTX\s0\fR\|(3),
\&\fBOCSP_REQ_CTX_add1_header()\fR by \fBOSSL_HTTP_REQ_CTX_add1_header\fR\|(3),
\&\fBOCSP_REQ_CTX_free()\fR by \fBOSSL_HTTP_REQ_CTX_free\fR\|(3), and
\&\fBOCSP_set_max_response_length()\fR by
\&\fBOSSL_HTTP_REQ_CTX_set_max_response_length\fR\|(3).
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBOCSP_sendreq_new()\fR returns a valid \fB\s-1OSSL_HTTP_REQ_CTX\s0\fR structure or \s-1NULL\s0
if an error occurred.
.PP
\&\fBOCSP_sendreq_nbio()\fR returns 1 for success, 0 on error, \-1 if retry is needed.
.PP
\&\fBOCSP_sendreq_bio()\fR returns the \fB\s-1OCSP_RESPONSE\s0\fR structure sent by the
responder or \s-1NULL\s0 if an error occurred.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\s-1\fBOSSL_HTTP_REQ_CTX\s0\fR\|(3), \fBOSSL_HTTP_transfer\fR\|(3),
\&\fBOCSP_cert_to_id\fR\|(3),
\&\fBOCSP_request_add1_nonce\fR\|(3),
\&\fBOCSP_REQUEST_new\fR\|(3),
\&\fBOCSP_resp_find_status\fR\|(3),
\&\fBOCSP_response_status\fR\|(3)
.SH "HISTORY"
.IX Header "HISTORY"
\&\fB\s-1OCSP_REQ_CTX\s0\fR,
\&\fBOCSP_REQ_CTX_i2d()\fR,
\&\fBOCSP_REQ_CTX_add1_header()\fR,
\&\fBOCSP_REQ_CTX_free()\fR,
\&\fBOCSP_set_max_response_length()\fR,
and \fBOCSP_REQ_CTX_set1_req()\fR
were deprecated in OpenSSL 3.0.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2015\-2023 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the Apache License 2.0 (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>.