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authorDaniel Stenberg <daniel@haxx.se>2019-08-06 11:30:08 +0200
committerDaniel Stenberg <daniel@haxx.se>2019-08-07 14:45:39 +0200
commitf933449d3b6c24e66d4a0c590bca3e7b2a39140d (patch)
treee12fce26c8357de4d04a48be83d90b6f5bee7cd0 /docs/libcurl/opts
parent2bdb26a507194e3fca08b3ed2a27becf222a517c (diff)
CURLINFO_RETRY_AFTER: parse the Retry-After header value
This is only the libcurl part that provides the information. There's no user of the parsed value. This change includes three new tests for the parser. Ref: #3794
Diffstat (limited to 'docs/libcurl/opts')
-rw-r--r--docs/libcurl/opts/CURLINFO_RETRY_AFTER.363
-rw-r--r--docs/libcurl/opts/Makefile.inc1
2 files changed, 64 insertions, 0 deletions
diff --git a/docs/libcurl/opts/CURLINFO_RETRY_AFTER.3 b/docs/libcurl/opts/CURLINFO_RETRY_AFTER.3
new file mode 100644
index 000000000..9e58ca62d
--- /dev/null
+++ b/docs/libcurl/opts/CURLINFO_RETRY_AFTER.3
@@ -0,0 +1,63 @@
+.\" **************************************************************************
+.\" * _ _ ____ _
+.\" * Project ___| | | | _ \| |
+.\" * / __| | | | |_) | |
+.\" * | (__| |_| | _ <| |___
+.\" * \___|\___/|_| \_\_____|
+.\" *
+.\" * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" *
+.\" * This software is licensed as described in the file COPYING, which
+.\" * you should have received as part of this distribution. The terms
+.\" * are also available at https://curl.haxx.se/docs/copyright.html.
+.\" *
+.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+.\" * copies of the Software, and permit persons to whom the Software is
+.\" * furnished to do so, under the terms of the COPYING file.
+.\" *
+.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+.\" * KIND, either express or implied.
+.\" *
+.\" **************************************************************************
+.\"
+.TH CURLINFO_RETRY_AFTER 3 "6 Aug 2019" "libcurl 7.66.0" "curl_easy_getinfo options"
+.SH NAME
+CURLINFO_RETRY_AFTER \- returns the Retry-After retry delay
+.SH SYNOPSIS
+#include <curl/curl.h>
+
+CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_RETRY_AFTER, curl_off_t *retry);
+.SH DESCRIPTION
+Pass a pointer to a curl_off_t variable to receive the number of seconds the
+HTTP server suggesets the client should wait until the next request is
+issued. The information from the "Retry-After:" header.
+
+While the HTTP header might contain a fixed date string, the
+\fICURLINFO_RETRY_AFTER(3)\fP will alwaus return number of seconds to wait -
+or zero if there was no header or the header couldn't be parsed.
+.SH DEFAULT
+Returns zero delay if there was no header.
+.SH PROTOCOLS
+HTTP(S)
+.SH EXAMPLE
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+ CURLcode res;
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
+ res = curl_easy_perform(curl);
+ if(res == CURLE_OK) {
+ curl_off_t wait = 0;
+ curl_easy_getinfo(curl, CURLINFO_RETRY_AFTER, &wait);
+ if(wait)
+ printf("Wait for %" CURL_FORMAT_CURL_OFF_T " seconds\\n", wait);
+ }
+ curl_easy_cleanup(curl);
+}
+.fi
+.SH AVAILABILITY
+Added in curl 7.66.0
+.SH RETURN VALUE
+Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
+.SH "SEE ALSO"
+.BR CURLOPT_STDERR "(3), " CURLOPT_HEADERFUNCTION "(3), "
diff --git a/docs/libcurl/opts/Makefile.inc b/docs/libcurl/opts/Makefile.inc
index 094c58f42..b7cd7a698 100644
--- a/docs/libcurl/opts/Makefile.inc
+++ b/docs/libcurl/opts/Makefile.inc
@@ -43,6 +43,7 @@ man_MANS = \
CURLINFO_REDIRECT_URL.3 \
CURLINFO_REQUEST_SIZE.3 \
CURLINFO_RESPONSE_CODE.3 \
+ CURLINFO_RETRY_AFTER.3 \
CURLINFO_RTSP_CLIENT_CSEQ.3 \
CURLINFO_RTSP_CSEQ_RECV.3 \
CURLINFO_RTSP_SERVER_CSEQ.3 \