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comparison mupdf-source/thirdparty/curl/docs/libcurl/opts/CURLOPT_LOCALPORTRANGE.3 @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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23 .TH CURLOPT_LOCALPORTRANGE 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
24 .SH NAME
25 CURLOPT_LOCALPORTRANGE \- number of additional local ports to try
26 .SH SYNOPSIS
27 #include <curl/curl.h>
28
29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOCALPORTRANGE,
30 long range);
31 .SH DESCRIPTION
32 Pass a long. The \fIrange\fP argument is the number of attempts libcurl will
33 make to find a working local port number. It starts with the given
34 \fICURLOPT_LOCALPORT(3)\fP and adds one to the number for each retry. Setting
35 this option to 1 or below will make libcurl do only one try for the exact port
36 number. Port numbers by nature are scarce resources that will be busy at times
37 so setting this value to something too low might cause unnecessary connection
38 setup failures.
39 .SH DEFAULT
40 1
41 .SH PROTOCOLS
42 All
43 .SH EXAMPLE
44 .nf
45 CURL *curl = curl_easy_init();
46 if(curl) {
47 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/foo.bin");
48 curl_easy_setopt(curl, CURLOPT_LOCALPORT, 49152L);
49 /* and try 20 more ports following that */
50 curl_easy_setopt(curl, CURLOPT_LOCALPORTRANGE, 20L);
51 ret = curl_easy_perform(curl);
52 curl_easy_cleanup(curl);
53 }
54 .fi
55 .SH AVAILABILITY
56 Added in 7.15.2
57 .SH RETURN VALUE
58 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
59 .SH "SEE ALSO"
60 .BR CURLOPT_LOCALPORT "(3), " CURLOPT_INTERFACE "(3), "