Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/examples/multi-double.c @ 40:aa33339d6b8a upstream

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ADD: MuPDF v1.26.10: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.5.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 11:31:38 +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 - 2018, 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 /* <DESC>
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23 * multi interface code doing two parallel HTTP transfers
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24 * </DESC>
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25 */
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26 #include <stdio.h>
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27 #include <string.h>
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29 /* somewhat unix-specific */
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30 #include <sys/time.h>
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31 #include <unistd.h>
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32
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33 /* curl stuff */
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34 #include <curl/curl.h>
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35
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36 /*
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37 * Simply download two HTTP files!
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38 */
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39 int main(void)
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40 {
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41 CURL *http_handle;
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42 CURL *http_handle2;
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43 CURLM *multi_handle;
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44
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45 int still_running = 0; /* keep number of running handles */
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47 http_handle = curl_easy_init();
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48 http_handle2 = curl_easy_init();
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49
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50 /* set options */
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51 curl_easy_setopt(http_handle, CURLOPT_URL, "https://www.example.com/");
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52
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53 /* set options */
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54 curl_easy_setopt(http_handle2, CURLOPT_URL, "http://localhost/");
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56 /* init a multi stack */
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57 multi_handle = curl_multi_init();
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58
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59 /* add the individual transfers */
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60 curl_multi_add_handle(multi_handle, http_handle);
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61 curl_multi_add_handle(multi_handle, http_handle2);
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62
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63 /* we start some action by calling perform right away */
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64 curl_multi_perform(multi_handle, &still_running);
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65
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66 while(still_running) {
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67 struct timeval timeout;
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68 int rc; /* select() return code */
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69 CURLMcode mc; /* curl_multi_fdset() return code */
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71 fd_set fdread;
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72 fd_set fdwrite;
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73 fd_set fdexcep;
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74 int maxfd = -1;
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75
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76 long curl_timeo = -1;
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78 FD_ZERO(&fdread);
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79 FD_ZERO(&fdwrite);
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80 FD_ZERO(&fdexcep);
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81
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82 /* set a suitable timeout to play around with */
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83 timeout.tv_sec = 1;
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84 timeout.tv_usec = 0;
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85
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86 curl_multi_timeout(multi_handle, &curl_timeo);
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87 if(curl_timeo >= 0) {
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88 timeout.tv_sec = curl_timeo / 1000;
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89 if(timeout.tv_sec > 1)
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90 timeout.tv_sec = 1;
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91 else
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92 timeout.tv_usec = (curl_timeo % 1000) * 1000;
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93 }
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94
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95 /* get file descriptors from the transfers */
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96 mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
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97
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98 if(mc != CURLM_OK) {
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99 fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
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100 break;
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101 }
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102
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103 /* On success the value of maxfd is guaranteed to be >= -1. We call
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104 select(maxfd + 1, ...); specially in case of (maxfd == -1) there are
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105 no fds ready yet so we call select(0, ...) --or Sleep() on Windows--
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106 to sleep 100ms, which is the minimum suggested value in the
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107 curl_multi_fdset() doc. */
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108
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109 if(maxfd == -1) {
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110 #ifdef _WIN32
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111 Sleep(100);
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112 rc = 0;
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113 #else
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114 /* Portable sleep for platforms other than Windows. */
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115 struct timeval wait = { 0, 100 * 1000 }; /* 100ms */
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116 rc = select(0, NULL, NULL, NULL, &wait);
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117 #endif
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118 }
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119 else {
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120 /* Note that on some platforms 'timeout' may be modified by select().
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121 If you need access to the original value save a copy beforehand. */
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122 rc = select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
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123 }
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124
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125 switch(rc) {
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126 case -1:
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127 /* select error */
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128 break;
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129 case 0:
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130 default:
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131 /* timeout or readable/writable sockets */
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132 curl_multi_perform(multi_handle, &still_running);
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133 break;
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134 }
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135 }
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136
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137 curl_multi_cleanup(multi_handle);
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138
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139 curl_easy_cleanup(http_handle);
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140 curl_easy_cleanup(http_handle2);
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141
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142 return 0;
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143 }