1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2021, 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.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 #include <errno.h>
32
33 /* somewhat unix-specific */
34 #include <sys/time.h>
35 #include <unistd.h>
36
37 /* curl stuff */
38 #include <curl/curl.h>
39 #include <curl/mprintf.h>
40
41 #ifndef CURLPIPE_MULTIPLEX
42 /* This little trick will just make sure that we don't enable pipelining for
43 libcurls old enough to not have this symbol. It is _not_ defined to zero in
44 a recent libcurl header. */
45 #define CURLPIPE_MULTIPLEX 0
46 #endif
47
48 #define NUM_HANDLES 1000
49
50 struct input {
51 FILE *in;
52 size_t bytes_read; /* count up */
53 CURL *hnd;
54 int num;
55 };
56
57 static
dump(const char * text,int num,unsigned char * ptr,size_t size,char nohex)58 void dump(const char *text, int num, unsigned char *ptr, size_t size,
59 char nohex)
60 {
61 size_t i;
62 size_t c;
63 unsigned int width = 0x10;
64
65 if(nohex)
66 /* without the hex output, we can fit more on screen */
67 width = 0x40;
68
69 fprintf(stderr, "%d %s, %lu bytes (0x%lx)\n",
70 num, text, (unsigned long)size, (unsigned long)size);
71
72 for(i = 0; i<size; i += width) {
73
74 fprintf(stderr, "%4.4lx: ", (unsigned long)i);
75
76 if(!nohex) {
77 /* hex not disabled, show it */
78 for(c = 0; c < width; c++)
79 if(i + c < size)
80 fprintf(stderr, "%02x ", ptr[i + c]);
81 else
82 fputs(" ", stderr);
83 }
84
85 for(c = 0; (c < width) && (i + c < size); c++) {
86 /* check for 0D0A; if found, skip past and start a new line of output */
87 if(nohex && (i + c + 1 < size) && ptr[i + c] == 0x0D &&
88 ptr[i + c + 1] == 0x0A) {
89 i += (c + 2 - width);
90 break;
91 }
92 fprintf(stderr, "%c",
93 (ptr[i + c] >= 0x20) && (ptr[i + c]<0x80)?ptr[i + c]:'.');
94 /* check again for 0D0A, to avoid an extra \n if it's at width */
95 if(nohex && (i + c + 2 < size) && ptr[i + c + 1] == 0x0D &&
96 ptr[i + c + 2] == 0x0A) {
97 i += (c + 3 - width);
98 break;
99 }
100 }
101 fputc('\n', stderr); /* newline */
102 }
103 }
104
105 static
my_trace(CURL * handle,curl_infotype type,char * data,size_t size,void * userp)106 int my_trace(CURL *handle, curl_infotype type,
107 char *data, size_t size,
108 void *userp)
109 {
110 char timebuf[60];
111 const char *text;
112 struct input *i = (struct input *)userp;
113 int num = i->num;
114 static time_t epoch_offset;
115 static int known_offset;
116 struct timeval tv;
117 time_t secs;
118 struct tm *now;
119 (void)handle; /* prevent compiler warning */
120
121 gettimeofday(&tv, NULL);
122 if(!known_offset) {
123 epoch_offset = time(NULL) - tv.tv_sec;
124 known_offset = 1;
125 }
126 secs = epoch_offset + tv.tv_sec;
127 now = localtime(&secs); /* not thread safe but we don't care */
128 curl_msnprintf(timebuf, sizeof(timebuf), "%02d:%02d:%02d.%06ld",
129 now->tm_hour, now->tm_min, now->tm_sec, (long)tv.tv_usec);
130
131 switch(type) {
132 case CURLINFO_TEXT:
133 fprintf(stderr, "%s [%d] Info: %s", timebuf, num, data);
134 /* FALLTHROUGH */
135 default: /* in case a new one is introduced to shock us */
136 return 0;
137
138 case CURLINFO_HEADER_OUT:
139 text = "=> Send header";
140 break;
141 case CURLINFO_DATA_OUT:
142 text = "=> Send data";
143 break;
144 case CURLINFO_SSL_DATA_OUT:
145 text = "=> Send SSL data";
146 break;
147 case CURLINFO_HEADER_IN:
148 text = "<= Recv header";
149 break;
150 case CURLINFO_DATA_IN:
151 text = "<= Recv data";
152 break;
153 case CURLINFO_SSL_DATA_IN:
154 text = "<= Recv SSL data";
155 break;
156 }
157
158 dump(text, num, (unsigned char *)data, size, 1);
159 return 0;
160 }
161
read_callback(char * ptr,size_t size,size_t nmemb,void * userp)162 static size_t read_callback(char *ptr, size_t size, size_t nmemb, void *userp)
163 {
164 struct input *i = userp;
165 size_t retcode = fread(ptr, size, nmemb, i->in);
166 i->bytes_read += retcode;
167 return retcode;
168 }
169
setup(struct input * i,int num,const char * upload)170 static void setup(struct input *i, int num, const char *upload)
171 {
172 FILE *out;
173 char url[256];
174 char filename[128];
175 struct stat file_info;
176 curl_off_t uploadsize;
177 CURL *hnd;
178
179 hnd = i->hnd = curl_easy_init();
180 i->num = num;
181 curl_msnprintf(filename, 128, "dl-%d", num);
182 out = fopen(filename, "wb");
183 if(!out) {
184 fprintf(stderr, "error: could not open file %s for writing: %s\n", upload,
185 strerror(errno));
186 exit(1);
187 }
188
189 curl_msnprintf(url, 256, "https://localhost:8443/upload-%d", num);
190
191 /* get the file size of the local file */
192 if(stat(upload, &file_info)) {
193 fprintf(stderr, "error: could not stat file %s: %s\n", upload,
194 strerror(errno));
195 exit(1);
196 }
197
198 uploadsize = file_info.st_size;
199
200 i->in = fopen(upload, "rb");
201 if(!i->in) {
202 fprintf(stderr, "error: could not open file %s for reading: %s\n", upload,
203 strerror(errno));
204 exit(1);
205 }
206
207 /* write to this file */
208 curl_easy_setopt(hnd, CURLOPT_WRITEDATA, out);
209
210 /* we want to use our own read function */
211 curl_easy_setopt(hnd, CURLOPT_READFUNCTION, read_callback);
212 /* read from this file */
213 curl_easy_setopt(hnd, CURLOPT_READDATA, i);
214 /* provide the size of the upload */
215 curl_easy_setopt(hnd, CURLOPT_INFILESIZE_LARGE, uploadsize);
216
217 /* send in the URL to store the upload as */
218 curl_easy_setopt(hnd, CURLOPT_URL, url);
219
220 /* upload please */
221 curl_easy_setopt(hnd, CURLOPT_UPLOAD, 1L);
222
223 /* please be verbose */
224 curl_easy_setopt(hnd, CURLOPT_VERBOSE, 1L);
225 curl_easy_setopt(hnd, CURLOPT_DEBUGFUNCTION, my_trace);
226 curl_easy_setopt(hnd, CURLOPT_DEBUGDATA, i);
227
228 /* HTTP/2 please */
229 curl_easy_setopt(hnd, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2_0);
230
231 /* we use a self-signed test server, skip verification during debugging */
232 curl_easy_setopt(hnd, CURLOPT_SSL_VERIFYPEER, 0L);
233 curl_easy_setopt(hnd, CURLOPT_SSL_VERIFYHOST, 0L);
234
235 #if (CURLPIPE_MULTIPLEX > 0)
236 /* wait for pipe connection to confirm */
237 curl_easy_setopt(hnd, CURLOPT_PIPEWAIT, 1L);
238 #endif
239 }
240
241 /*
242 * Upload all files over HTTP/2, using the same physical connection!
243 */
main(int argc,char ** argv)244 int main(int argc, char **argv)
245 {
246 struct input trans[NUM_HANDLES];
247 CURLM *multi_handle;
248 int i;
249 int still_running = 0; /* keep number of running handles */
250 const char *filename = "index.html";
251 int num_transfers;
252
253 if(argc > 1) {
254 /* if given a number, do that many transfers */
255 num_transfers = atoi(argv[1]);
256
257 if(!num_transfers || (num_transfers > NUM_HANDLES))
258 num_transfers = 3; /* a suitable low default */
259
260 if(argc > 2)
261 /* if given a file name, upload this! */
262 filename = argv[2];
263 }
264 else
265 num_transfers = 3;
266
267 /* init a multi stack */
268 multi_handle = curl_multi_init();
269
270 for(i = 0; i<num_transfers; i++) {
271 setup(&trans[i], i, filename);
272
273 /* add the individual transfer */
274 curl_multi_add_handle(multi_handle, trans[i].hnd);
275 }
276
277 curl_multi_setopt(multi_handle, CURLMOPT_PIPELINING, CURLPIPE_MULTIPLEX);
278
279 /* We do HTTP/2 so let's stick to one connection per host */
280 curl_multi_setopt(multi_handle, CURLMOPT_MAX_HOST_CONNECTIONS, 1L);
281
282 do {
283 CURLMcode mc = curl_multi_perform(multi_handle, &still_running);
284
285 if(still_running)
286 /* wait for activity, timeout or "nothing" */
287 mc = curl_multi_poll(multi_handle, NULL, 0, 1000, NULL);
288
289 if(mc)
290 break;
291
292 } while(still_running);
293
294 curl_multi_cleanup(multi_handle);
295
296 for(i = 0; i<num_transfers; i++) {
297 curl_multi_remove_handle(multi_handle, trans[i].hnd);
298 curl_easy_cleanup(trans[i].hnd);
299 }
300
301 return 0;
302 }
303