Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/examples/multi-app.c @ 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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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 * A basic application source code using the multi interface doing two
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24 * transfers in parallel.
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25 * </DESC>
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26 */
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28 #include <stdio.h>
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29 #include <string.h>
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31 /* somewhat unix-specific */
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32 #include <sys/time.h>
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33 #include <unistd.h>
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35 /* curl stuff */
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36 #include <curl/curl.h>
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38 /*
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39 * Download a HTTP file and upload an FTP file simultaneously.
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40 */
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42 #define HANDLECOUNT 2 /* Number of simultaneous transfers */
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43 #define HTTP_HANDLE 0 /* Index for the HTTP transfer */
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44 #define FTP_HANDLE 1 /* Index for the FTP transfer */
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46 int main(void)
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47 {
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48 CURL *handles[HANDLECOUNT];
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49 CURLM *multi_handle;
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51 int still_running = 0; /* keep number of running handles */
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52 int i;
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54 CURLMsg *msg; /* for picking up messages with the transfer status */
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55 int msgs_left; /* how many messages are left */
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57 /* Allocate one CURL handle per transfer */
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58 for(i = 0; i<HANDLECOUNT; i++)
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59 handles[i] = curl_easy_init();
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61 /* set the options (I left out a few, you'll get the point anyway) */
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62 curl_easy_setopt(handles[HTTP_HANDLE], CURLOPT_URL, "https://example.com");
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64 curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_URL, "ftp://example.com");
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65 curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_UPLOAD, 1L);
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67 /* init a multi stack */
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68 multi_handle = curl_multi_init();
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70 /* add the individual transfers */
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71 for(i = 0; i<HANDLECOUNT; i++)
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72 curl_multi_add_handle(multi_handle, handles[i]);
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74 /* we start some action by calling perform right away */
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75 curl_multi_perform(multi_handle, &still_running);
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77 while(still_running) {
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78 struct timeval timeout;
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79 int rc; /* select() return code */
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80 CURLMcode mc; /* curl_multi_fdset() return code */
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82 fd_set fdread;
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83 fd_set fdwrite;
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84 fd_set fdexcep;
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85 int maxfd = -1;
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87 long curl_timeo = -1;
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89 FD_ZERO(&fdread);
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90 FD_ZERO(&fdwrite);
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91 FD_ZERO(&fdexcep);
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93 /* set a suitable timeout to play around with */
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94 timeout.tv_sec = 1;
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95 timeout.tv_usec = 0;
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97 curl_multi_timeout(multi_handle, &curl_timeo);
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98 if(curl_timeo >= 0) {
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99 timeout.tv_sec = curl_timeo / 1000;
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100 if(timeout.tv_sec > 1)
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diff changeset
101 timeout.tv_sec = 1;
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102 else
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103 timeout.tv_usec = (curl_timeo % 1000) * 1000;
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104 }
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105
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106 /* get file descriptors from the transfers */
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107 mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
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108
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109 if(mc != CURLM_OK) {
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110 fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
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111 break;
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112 }
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113
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114 /* On success the value of maxfd is guaranteed to be >= -1. We call
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115 select(maxfd + 1, ...); specially in case of (maxfd == -1) there are
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116 no fds ready yet so we call select(0, ...) --or Sleep() on Windows--
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117 to sleep 100ms, which is the minimum suggested value in the
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118 curl_multi_fdset() doc. */
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119
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120 if(maxfd == -1) {
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121 #ifdef _WIN32
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122 Sleep(100);
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123 rc = 0;
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124 #else
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125 /* Portable sleep for platforms other than Windows. */
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126 struct timeval wait = { 0, 100 * 1000 }; /* 100ms */
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127 rc = select(0, NULL, NULL, NULL, &wait);
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128 #endif
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129 }
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130 else {
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131 /* Note that on some platforms 'timeout' may be modified by select().
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132 If you need access to the original value save a copy beforehand. */
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133 rc = select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
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134 }
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135
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136 switch(rc) {
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137 case -1:
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138 /* select error */
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139 break;
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140 case 0: /* timeout */
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141 default: /* action */
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142 curl_multi_perform(multi_handle, &still_running);
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143 break;
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144 }
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145 }
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146
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147 /* See how the transfers went */
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parents:
diff changeset
148 while((msg = curl_multi_info_read(multi_handle, &msgs_left))) {
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diff changeset
149 if(msg->msg == CURLMSG_DONE) {
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diff changeset
150 int idx;
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151
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diff changeset
152 /* Find out which handle this message is about */
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153 for(idx = 0; idx<HANDLECOUNT; idx++) {
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diff changeset
154 int found = (msg->easy_handle == handles[idx]);
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diff changeset
155 if(found)
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156 break;
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diff changeset
157 }
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parents:
diff changeset
158
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diff changeset
159 switch(idx) {
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diff changeset
160 case HTTP_HANDLE:
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parents:
diff changeset
161 printf("HTTP transfer completed with status %d\n", msg->data.result);
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parents:
diff changeset
162 break;
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parents:
diff changeset
163 case FTP_HANDLE:
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
164 printf("FTP transfer completed with status %d\n", msg->data.result);
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diff changeset
165 break;
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parents:
diff changeset
166 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
167 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
168 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
169
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
170 curl_multi_cleanup(multi_handle);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
171
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parents:
diff changeset
172 /* Free the CURL handles */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
173 for(i = 0; i<HANDLECOUNT; i++)
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parents:
diff changeset
174 curl_easy_cleanup(handles[i]);
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parents:
diff changeset
175
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
176 return 0;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
177 }