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comparison mupdf-source/thirdparty/curl/docs/examples/http2-upload.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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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22 /* <DESC>
23 * Multiplexed HTTP/2 uploads over a single connection
24 * </DESC>
25 */
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29 #include <fcntl.h>
30 #include <sys/stat.h>
31
32 /* somewhat unix-specific */
33 #include <sys/time.h>
34 #include <unistd.h>
35
36 /* curl stuff */
37 #include <curl/curl.h>
38
39 #ifndef CURLPIPE_MULTIPLEX
40 /* This little trick will just make sure that we don't enable pipelining for
41 libcurls old enough to not have this symbol. It is _not_ defined to zero in
42 a recent libcurl header. */
43 #define CURLPIPE_MULTIPLEX 0
44 #endif
45
46 #define NUM_HANDLES 1000
47
48 struct input {
49 FILE *in;
50 size_t bytes_read; /* count up */
51 CURL *hnd;
52 int num;
53 };
54
55 static
56 void dump(const char *text, int num, unsigned char *ptr, size_t size,
57 char nohex)
58 {
59 size_t i;
60 size_t c;
61 unsigned int width = 0x10;
62
63 if(nohex)
64 /* without the hex output, we can fit more on screen */
65 width = 0x40;
66
67 fprintf(stderr, "%d %s, %lu bytes (0x%lx)\n",
68 num, text, (unsigned long)size, (unsigned long)size);
69
70 for(i = 0; i<size; i += width) {
71
72 fprintf(stderr, "%4.4lx: ", (unsigned long)i);
73
74 if(!nohex) {
75 /* hex not disabled, show it */
76 for(c = 0; c < width; c++)
77 if(i + c < size)
78 fprintf(stderr, "%02x ", ptr[i + c]);
79 else
80 fputs(" ", stderr);
81 }
82
83 for(c = 0; (c < width) && (i + c < size); c++) {
84 /* check for 0D0A; if found, skip past and start a new line of output */
85 if(nohex && (i + c + 1 < size) && ptr[i + c] == 0x0D &&
86 ptr[i + c + 1] == 0x0A) {
87 i += (c + 2 - width);
88 break;
89 }
90 fprintf(stderr, "%c",
91 (ptr[i + c] >= 0x20) && (ptr[i + c]<0x80)?ptr[i + c]:'.');
92 /* check again for 0D0A, to avoid an extra \n if it's at width */
93 if(nohex && (i + c + 2 < size) && ptr[i + c + 1] == 0x0D &&
94 ptr[i + c + 2] == 0x0A) {
95 i += (c + 3 - width);
96 break;
97 }
98 }
99 fputc('\n', stderr); /* newline */
100 }
101 }
102
103 static
104 int my_trace(CURL *handle, curl_infotype type,
105 char *data, size_t size,
106 void *userp)
107 {
108 char timebuf[60];
109 const char *text;
110 struct input *i = (struct input *)userp;
111 int num = i->num;
112 static time_t epoch_offset;
113 static int known_offset;
114 struct timeval tv;
115 time_t secs;
116 struct tm *now;
117 (void)handle; /* prevent compiler warning */
118
119 gettimeofday(&tv, NULL);
120 if(!known_offset) {
121 epoch_offset = time(NULL) - tv.tv_sec;
122 known_offset = 1;
123 }
124 secs = epoch_offset + tv.tv_sec;
125 now = localtime(&secs); /* not thread safe but we don't care */
126 snprintf(timebuf, sizeof(timebuf), "%02d:%02d:%02d.%06ld",
127 now->tm_hour, now->tm_min, now->tm_sec, (long)tv.tv_usec);
128
129 switch(type) {
130 case CURLINFO_TEXT:
131 fprintf(stderr, "%s [%d] Info: %s", timebuf, num, data);
132 /* FALLTHROUGH */
133 default: /* in case a new one is introduced to shock us */
134 return 0;
135
136 case CURLINFO_HEADER_OUT:
137 text = "=> Send header";
138 break;
139 case CURLINFO_DATA_OUT:
140 text = "=> Send data";
141 break;
142 case CURLINFO_SSL_DATA_OUT:
143 text = "=> Send SSL data";
144 break;
145 case CURLINFO_HEADER_IN:
146 text = "<= Recv header";
147 break;
148 case CURLINFO_DATA_IN:
149 text = "<= Recv data";
150 break;
151 case CURLINFO_SSL_DATA_IN:
152 text = "<= Recv SSL data";
153 break;
154 }
155
156 dump(text, num, (unsigned char *)data, size, 1);
157 return 0;
158 }
159
160 static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *userp)
161 {
162 struct input *i = userp;
163 size_t retcode = fread(ptr, size, nmemb, i->in);
164 i->bytes_read += retcode;
165 return retcode;
166 }
167
168 static void setup(struct input *i, int num, const char *upload)
169 {
170 FILE *out;
171 char url[256];
172 char filename[128];
173 struct stat file_info;
174 curl_off_t uploadsize;
175 CURL *hnd;
176
177 hnd = i->hnd = curl_easy_init();
178 i->num = num;
179 snprintf(filename, 128, "dl-%d", num);
180 out = fopen(filename, "wb");
181
182 snprintf(url, 256, "https://localhost:8443/upload-%d", num);
183
184 /* get the file size of the local file */
185 stat(upload, &file_info);
186 uploadsize = file_info.st_size;
187
188 i->in = fopen(upload, "rb");
189
190 /* write to this file */
191 curl_easy_setopt(hnd, CURLOPT_WRITEDATA, out);
192
193 /* we want to use our own read function */
194 curl_easy_setopt(hnd, CURLOPT_READFUNCTION, read_callback);
195 /* read from this file */
196 curl_easy_setopt(hnd, CURLOPT_READDATA, i);
197 /* provide the size of the upload */
198 curl_easy_setopt(hnd, CURLOPT_INFILESIZE_LARGE, uploadsize);
199
200 /* send in the URL to store the upload as */
201 curl_easy_setopt(hnd, CURLOPT_URL, url);
202
203 /* upload please */
204 curl_easy_setopt(hnd, CURLOPT_UPLOAD, 1L);
205
206 /* please be verbose */
207 curl_easy_setopt(hnd, CURLOPT_VERBOSE, 1L);
208 curl_easy_setopt(hnd, CURLOPT_DEBUGFUNCTION, my_trace);
209 curl_easy_setopt(hnd, CURLOPT_DEBUGDATA, i);
210
211 /* HTTP/2 please */
212 curl_easy_setopt(hnd, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2_0);
213
214 /* we use a self-signed test server, skip verification during debugging */
215 curl_easy_setopt(hnd, CURLOPT_SSL_VERIFYPEER, 0L);
216 curl_easy_setopt(hnd, CURLOPT_SSL_VERIFYHOST, 0L);
217
218 #if (CURLPIPE_MULTIPLEX > 0)
219 /* wait for pipe connection to confirm */
220 curl_easy_setopt(hnd, CURLOPT_PIPEWAIT, 1L);
221 #endif
222 }
223
224 /*
225 * Upload all files over HTTP/2, using the same physical connection!
226 */
227 int main(int argc, char **argv)
228 {
229 struct input trans[NUM_HANDLES];
230 CURLM *multi_handle;
231 int i;
232 int still_running = 0; /* keep number of running handles */
233 const char *filename = "index.html";
234 int num_transfers;
235
236 if(argc > 1) {
237 /* if given a number, do that many transfers */
238 num_transfers = atoi(argv[1]);
239
240 if(!num_transfers || (num_transfers > NUM_HANDLES))
241 num_transfers = 3; /* a suitable low default */
242
243 if(argc > 2)
244 /* if given a file name, upload this! */
245 filename = argv[2];
246 }
247 else
248 num_transfers = 3;
249
250 /* init a multi stack */
251 multi_handle = curl_multi_init();
252
253 for(i = 0; i<num_transfers; i++) {
254 setup(&trans[i], i, filename);
255
256 /* add the individual transfer */
257 curl_multi_add_handle(multi_handle, trans[i].hnd);
258 }
259
260 curl_multi_setopt(multi_handle, CURLMOPT_PIPELINING, CURLPIPE_MULTIPLEX);
261
262 /* We do HTTP/2 so let's stick to one connection per host */
263 curl_multi_setopt(multi_handle, CURLMOPT_MAX_HOST_CONNECTIONS, 1L);
264
265 /* we start some action by calling perform right away */
266 curl_multi_perform(multi_handle, &still_running);
267
268 while(still_running) {
269 struct timeval timeout;
270 int rc; /* select() return code */
271 CURLMcode mc; /* curl_multi_fdset() return code */
272
273 fd_set fdread;
274 fd_set fdwrite;
275 fd_set fdexcep;
276 int maxfd = -1;
277
278 long curl_timeo = -1;
279
280 FD_ZERO(&fdread);
281 FD_ZERO(&fdwrite);
282 FD_ZERO(&fdexcep);
283
284 /* set a suitable timeout to play around with */
285 timeout.tv_sec = 1;
286 timeout.tv_usec = 0;
287
288 curl_multi_timeout(multi_handle, &curl_timeo);
289 if(curl_timeo >= 0) {
290 timeout.tv_sec = curl_timeo / 1000;
291 if(timeout.tv_sec > 1)
292 timeout.tv_sec = 1;
293 else
294 timeout.tv_usec = (curl_timeo % 1000) * 1000;
295 }
296
297 /* get file descriptors from the transfers */
298 mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
299
300 if(mc != CURLM_OK) {
301 fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
302 break;
303 }
304
305 /* On success the value of maxfd is guaranteed to be >= -1. We call
306 select(maxfd + 1, ...); specially in case of (maxfd == -1) there are
307 no fds ready yet so we call select(0, ...) --or Sleep() on Windows--
308 to sleep 100ms, which is the minimum suggested value in the
309 curl_multi_fdset() doc. */
310
311 if(maxfd == -1) {
312 #ifdef _WIN32
313 Sleep(100);
314 rc = 0;
315 #else
316 /* Portable sleep for platforms other than Windows. */
317 struct timeval wait = { 0, 100 * 1000 }; /* 100ms */
318 rc = select(0, NULL, NULL, NULL, &wait);
319 #endif
320 }
321 else {
322 /* Note that on some platforms 'timeout' may be modified by select().
323 If you need access to the original value save a copy beforehand. */
324 rc = select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
325 }
326
327 switch(rc) {
328 case -1:
329 /* select error */
330 break;
331 case 0:
332 default:
333 /* timeout or readable/writable sockets */
334 curl_multi_perform(multi_handle, &still_running);
335 break;
336 }
337 }
338
339 curl_multi_cleanup(multi_handle);
340
341 for(i = 0; i<num_transfers; i++) {
342 curl_multi_remove_handle(multi_handle, trans[i].hnd);
343 curl_easy_cleanup(trans[i].hnd);
344 }
345
346 return 0;
347 }