Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/libcurl/opts/CURLOPT_OPENSOCKETDATA.3 @ 17:dd9cdb856310

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Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
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1 .\" **************************************************************************
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2 .\" * _ _ ____ _
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3 .\" * Project ___| | | | _ \| |
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4 .\" * / __| | | | |_) | |
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5 .\" * | (__| |_| | _ <| |___
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6 .\" * \___|\___/|_| \_\_____|
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7 .\" *
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8 .\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 .\" *
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10 .\" * This software is licensed as described in the file COPYING, which
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11 .\" * you should have received as part of this distribution. The terms
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12 .\" * are also available at https://curl.haxx.se/docs/copyright.html.
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13 .\" *
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14 .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 .\" * copies of the Software, and permit persons to whom the Software is
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16 .\" * furnished to do so, under the terms of the COPYING file.
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17 .\" *
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18 .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 .\" * KIND, either express or implied.
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20 .\" *
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21 .\" **************************************************************************
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22 .\"
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23 .TH CURLOPT_OPENSOCKETDATA 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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24 .SH NAME
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25 CURLOPT_OPENSOCKETDATA \- custom pointer passed to open socket callback
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26 .SH SYNOPSIS
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27 #include <curl/curl.h>
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28
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29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_OPENSOCKETDATA, void *pointer);
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30 .SH DESCRIPTION
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31 Pass a \fIpointer\fP that will be untouched by libcurl and passed as the first
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32 argument in the opensocket callback set with \fICURLOPT_OPENSOCKETFUNCTION(3)\fP.
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33 .SH DEFAULT
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34 The default value of this parameter is NULL.
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35 .SH PROTOCOLS
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36 All
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37 .SH EXAMPLE
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38 .nf
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39 /* make libcurl use the already established socket 'sockfd' */
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40
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41 static curl_socket_t opensocket(void *clientp,
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42 curlsocktype purpose,
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43 struct curl_sockaddr *address)
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44 {
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45 curl_socket_t sockfd;
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46 sockfd = *(curl_socket_t *)clientp;
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47 /* the actual externally set socket is passed in via the OPENSOCKETDATA
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48 option */
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49 return sockfd;
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50 }
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51
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52 static int sockopt_callback(void *clientp, curl_socket_t curlfd,
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53 curlsocktype purpose)
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54 {
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55 /* This return code was added in libcurl 7.21.5 */
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56 return CURL_SOCKOPT_ALREADY_CONNECTED;
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57 }
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58
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59 curl = curl_easy_init();
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60 if(curl) {
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61 /* libcurl will internally think that you connect to the host
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62 * and port that you specify in the URL option. */
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63 curl_easy_setopt(curl, CURLOPT_URL, "http://99.99.99.99:9999");
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64 /* call this function to get a socket */
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65 curl_easy_setopt(curl, CURLOPT_OPENSOCKETFUNCTION, opensocket);
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66 curl_easy_setopt(curl, CURLOPT_OPENSOCKETDATA, &sockfd);
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67
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68 /* call this function to set options for the socket */
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69 curl_easy_setopt(curl, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
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70
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71 res = curl_easy_perform(curl);
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72
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73 curl_easy_cleanup(curl);
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74 }
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75 .fi
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76 .SH AVAILABILITY
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77 Added in 7.17.1
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78 .SH RETURN VALUE
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79 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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80 .SH "SEE ALSO"
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81 .BR CURLOPT_OPENSOCKETFUNCTION "(3), " CURLOPT_SOCKOPTFUNCTION "(3), "