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-rw-r--r--docs/examples/http2-download.c290
-rw-r--r--docs/examples/http2-upload.c349
2 files changed, 639 insertions, 0 deletions
diff --git a/docs/examples/http2-download.c b/docs/examples/http2-download.c
new file mode 100644
index 000000000..db5ed7a13
--- /dev/null
+++ b/docs/examples/http2-download.c
@@ -0,0 +1,290 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+
+/* somewhat unix-specific */
+#include <sys/time.h>
+#include <unistd.h>
+
+/* curl stuff */
+#include <curl/curl.h>
+
+#ifndef CURLPIPE_MULTIPLEX
+/* This little trick will just make sure that we don't enable pipelining for
+ libcurls old enough to not have this symbol. It is _not_ defined to zero in
+ a recent libcurl header. */
+#define CURLPIPE_MULTIPLEX 0
+#endif
+
+#define NUM_HANDLES 1000
+
+void *curl_hnd[NUM_HANDLES];
+int num_transfers;
+
+/* a handle to number lookup, highly ineffective when we do many
+ transfers... */
+static int hnd2num(CURL *hnd)
+{
+ int i;
+ for(i=0; i< num_transfers; i++) {
+ if(curl_hnd[i] == hnd)
+ return i;
+ }
+ return 0; /* weird, but just a fail-safe */
+}
+
+static
+void dump(const char *text, int num, unsigned char *ptr, size_t size,
+ char nohex)
+{
+ size_t i;
+ size_t c;
+
+ unsigned int width=0x10;
+
+ if(nohex)
+ /* without the hex output, we can fit more on screen */
+ width = 0x40;
+
+ fprintf(stderr, "%d %s, %ld bytes (0x%lx)\n",
+ num, text, (long)size, (long)size);
+
+ for(i=0; i<size; i+= width) {
+
+ fprintf(stderr, "%4.4lx: ", (long)i);
+
+ if(!nohex) {
+ /* hex not disabled, show it */
+ for(c = 0; c < width; c++)
+ if(i+c < size)
+ fprintf(stderr, "%02x ", ptr[i+c]);
+ else
+ fputs(" ", stderr);
+ }
+
+ for(c = 0; (c < width) && (i+c < size); c++) {
+ /* check for 0D0A; if found, skip past and start a new line of output */
+ if (nohex && (i+c+1 < size) && ptr[i+c]==0x0D && ptr[i+c+1]==0x0A) {
+ i+=(c+2-width);
+ break;
+ }
+ fprintf(stderr, "%c",
+ (ptr[i+c]>=0x20) && (ptr[i+c]<0x80)?ptr[i+c]:'.');
+ /* check again for 0D0A, to avoid an extra \n if it's at width */
+ if (nohex && (i+c+2 < size) && ptr[i+c+1]==0x0D && ptr[i+c+2]==0x0A) {
+ i+=(c+3-width);
+ break;
+ }
+ }
+ fputc('\n', stderr); /* newline */
+ }
+}
+
+static
+int my_trace(CURL *handle, curl_infotype type,
+ char *data, size_t size,
+ void *userp)
+{
+ const char *text;
+ int num = hnd2num(handle);
+ (void)handle; /* prevent compiler warning */
+ (void)userp;
+ switch (type) {
+ case CURLINFO_TEXT:
+ fprintf(stderr, "== %d Info: %s", num, data);
+ default: /* in case a new one is introduced to shock us */
+ return 0;
+
+ case CURLINFO_HEADER_OUT:
+ text = "=> Send header";
+ break;
+ case CURLINFO_DATA_OUT:
+ text = "=> Send data";
+ break;
+ case CURLINFO_SSL_DATA_OUT:
+ text = "=> Send SSL data";
+ break;
+ case CURLINFO_HEADER_IN:
+ text = "<= Recv header";
+ break;
+ case CURLINFO_DATA_IN:
+ text = "<= Recv data";
+ break;
+ case CURLINFO_SSL_DATA_IN:
+ text = "<= Recv SSL data";
+ break;
+ }
+
+ dump(text, num, (unsigned char *)data, size, 1);
+ return 0;
+}
+
+static void setup(CURL *hnd, int num)
+{
+ FILE *out;
+ char filename[128];
+
+ sprintf(filename, "dl-%d", num);
+
+ out = fopen(filename, "wb");
+
+ /* write to this file */
+ curl_easy_setopt(hnd, CURLOPT_WRITEDATA, out);
+
+ /* get the same URL for now */
+ curl_easy_setopt(hnd, CURLOPT_URL, "https://localhost:8443/index.html");
+
+ /* send it verbose for max debuggaility */
+ curl_easy_setopt(hnd, CURLOPT_VERBOSE, 1L);
+ curl_easy_setopt(hnd, CURLOPT_DEBUGFUNCTION, my_trace);
+
+ /* HTTP/2 please */
+ curl_easy_setopt(hnd, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2_0);
+
+ /* we use a self-signed test server, skip verification during debugging */
+ curl_easy_setopt(hnd, CURLOPT_SSL_VERIFYPEER, 0L);
+ curl_easy_setopt(hnd, CURLOPT_SSL_VERIFYHOST, 0L);
+
+#ifdef CURLPIPE_MULTIPLEX
+ /* wait for pipe connection to confirm */
+ curl_easy_setopt(hnd, CURLOPT_PIPEWAIT, 1L);
+#endif
+
+ curl_hnd[num] = hnd;
+}
+
+/*
+ * Simply download two files over HTTP/2, using the same physical connection!
+ */
+int main(int argc, char **argv)
+{
+ CURL *easy[NUM_HANDLES];
+ CURLM *multi_handle;
+ int i;
+ int still_running; /* keep number of running handles */
+
+ if(argc > 1)
+ /* if given a number, do that many transfers */
+ num_transfers = atoi(argv[1]);
+
+ if(!num_transfers || (num_transfers > NUM_HANDLES))
+ num_transfers = 3; /* a suitable low default */
+
+ /* init a multi stack */
+ multi_handle = curl_multi_init();
+
+ for(i=0; i<num_transfers; i++) {
+ easy[i] = curl_easy_init();
+ /* set options */
+ setup(easy[i], i);
+
+ /* add the individual transfer */
+ curl_multi_add_handle(multi_handle, easy[i]);
+ }
+
+ /* For now (at least) we use bit 1 in the pipelining option to switch on
+ HTTP/2 multiplexing */
+ curl_multi_setopt(multi_handle, CURLMOPT_PIPELINING, CURLPIPE_MULTIPLEX);
+
+ /* we start some action by calling perform right away */
+ curl_multi_perform(multi_handle, &still_running);
+
+ do {
+ struct timeval timeout;
+ int rc; /* select() return code */
+ CURLMcode mc; /* curl_multi_fdset() return code */
+
+ fd_set fdread;
+ fd_set fdwrite;
+ fd_set fdexcep;
+ int maxfd = -1;
+
+ long curl_timeo = -1;
+
+ FD_ZERO(&fdread);
+ FD_ZERO(&fdwrite);
+ FD_ZERO(&fdexcep);
+
+ /* set a suitable timeout to play around with */
+ timeout.tv_sec = 1;
+ timeout.tv_usec = 0;
+
+ curl_multi_timeout(multi_handle, &curl_timeo);
+ if(curl_timeo >= 0) {
+ timeout.tv_sec = curl_timeo / 1000;
+ if(timeout.tv_sec > 1)
+ timeout.tv_sec = 1;
+ else
+ timeout.tv_usec = (curl_timeo % 1000) * 1000;
+ }
+
+ /* get file descriptors from the transfers */
+ mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
+
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) there are
+ no fds ready yet so we call select(0, ...) --or Sleep() on Windows--
+ to sleep 100ms, which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+ if(maxfd == -1) {
+#ifdef _WIN32
+ Sleep(100);
+ rc = 0;
+#else
+ /* Portable sleep for platforms other than Windows. */
+ struct timeval wait = { 0, 100 * 1000 }; /* 100ms */
+ rc = select(0, NULL, NULL, NULL, &wait);
+#endif
+ }
+ else {
+ /* Note that on some platforms 'timeout' may be modified by select().
+ If you need access to the original value save a copy beforehand. */
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
+
+ switch(rc) {
+ case -1:
+ /* select error */
+ break;
+ case 0:
+ default:
+ /* timeout or readable/writable sockets */
+ curl_multi_perform(multi_handle, &still_running);
+ break;
+ }
+ } while(still_running);
+
+ curl_multi_cleanup(multi_handle);
+
+ for(i=0; i<num_transfers; i++)
+ curl_easy_cleanup(easy[i]);
+
+ return 0;
+}
diff --git a/docs/examples/http2-upload.c b/docs/examples/http2-upload.c
new file mode 100644
index 000000000..17197073e
--- /dev/null
+++ b/docs/examples/http2-upload.c
@@ -0,0 +1,349 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+/* somewhat unix-specific */
+#include <sys/time.h>
+#include <unistd.h>
+
+/* curl stuff */
+#include <curl/curl.h>
+
+#ifndef CURLPIPE_MULTIPLEX
+/* This little trick will just make sure that we don't enable pipelining for
+ libcurls old enough to not have this symbol. It is _not_ defined to zero in
+ a recent libcurl header. */
+#define CURLPIPE_MULTIPLEX 0
+#endif
+
+#define NUM_HANDLES 1000
+
+void *curl_hnd[NUM_HANDLES];
+int num_transfers;
+
+/* a handle to number lookup, highly ineffective when we do many
+ transfers... */
+static int hnd2num(CURL *hnd)
+{
+ int i;
+ for(i=0; i< num_transfers; i++) {
+ if(curl_hnd[i] == hnd)
+ return i;
+ }
+ return 0; /* weird, but just a fail-safe */
+}
+
+static
+void dump(const char *text, int num, unsigned char *ptr, size_t size,
+ char nohex)
+{
+ size_t i;
+ size_t c;
+ unsigned int width=0x10;
+
+ if(nohex)
+ /* without the hex output, we can fit more on screen */
+ width = 0x40;
+
+ fprintf(stderr, "%d %s, %ld bytes (0x%lx)\n",
+ num, text, (long)size, (long)size);
+
+ for(i=0; i<size; i+= width) {
+
+ fprintf(stderr, "%4.4lx: ", (long)i);
+
+ if(!nohex) {
+ /* hex not disabled, show it */
+ for(c = 0; c < width; c++)
+ if(i+c < size)
+ fprintf(stderr, "%02x ", ptr[i+c]);
+ else
+ fputs(" ", stderr);
+ }
+
+ for(c = 0; (c < width) && (i+c < size); c++) {
+ /* check for 0D0A; if found, skip past and start a new line of output */
+ if (nohex && (i+c+1 < size) && ptr[i+c]==0x0D && ptr[i+c+1]==0x0A) {
+ i+=(c+2-width);
+ break;
+ }
+ fprintf(stderr, "%c",
+ (ptr[i+c]>=0x20) && (ptr[i+c]<0x80)?ptr[i+c]:'.');
+ /* check again for 0D0A, to avoid an extra \n if it's at width */
+ if (nohex && (i+c+2 < size) && ptr[i+c+1]==0x0D && ptr[i+c+2]==0x0A) {
+ i+=(c+3-width);
+ break;
+ }
+ }
+ fputc('\n', stderr); /* newline */
+ }
+}
+
+static
+int my_trace(CURL *handle, curl_infotype type,
+ char *data, size_t size,
+ void *userp)
+{
+ char timebuf[20];
+ const char *text;
+ int num = hnd2num(handle);
+ static time_t epoch_offset;
+ static int known_offset;
+ struct timeval tv;
+ time_t secs;
+ struct tm *now;
+
+ (void)handle; /* prevent compiler warning */
+ (void)userp;
+
+ gettimeofday(&tv, NULL);
+ if(!known_offset) {
+ epoch_offset = time(NULL) - tv.tv_sec;
+ known_offset = 1;
+ }
+ secs = epoch_offset + tv.tv_sec;
+ now = localtime(&secs); /* not thread safe but we don't care */
+ snprintf(timebuf, sizeof(timebuf), "%02d:%02d:%02d.%06ld",
+ now->tm_hour, now->tm_min, now->tm_sec, (long)tv.tv_usec);
+
+ switch (type) {
+ case CURLINFO_TEXT:
+ fprintf(stderr, "%s [%d] Info: %s", timebuf, num, data);
+ default: /* in case a new one is introduced to shock us */
+ return 0;
+
+ case CURLINFO_HEADER_OUT:
+ text = "=> Send header";
+ break;
+ case CURLINFO_DATA_OUT:
+ text = "=> Send data";
+ break;
+ case CURLINFO_SSL_DATA_OUT:
+ text = "=> Send SSL data";
+ break;
+ case CURLINFO_HEADER_IN:
+ text = "<= Recv header";
+ break;
+ case CURLINFO_DATA_IN:
+ text = "<= Recv data";
+ break;
+ case CURLINFO_SSL_DATA_IN:
+ text = "<= Recv SSL data";
+ break;
+ }
+
+ dump(text, num, (unsigned char *)data, size, 1);
+ return 0;
+}
+
+struct input {
+ FILE *in;
+ size_t bytes_read; /* count up */
+ CURL *hnd;
+};
+
+static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *userp)
+{
+ struct input *i = userp;
+ size_t retcode = fread(ptr, size, nmemb, i->in);
+ i->bytes_read += retcode;
+ return retcode;
+}
+
+struct input indata[NUM_HANDLES];
+
+static void setup(CURL *hnd, int num, const char *upload)
+{
+ FILE *out;
+ char url[256];
+ char filename[128];
+ struct stat file_info;
+ curl_off_t uploadsize;
+
+ sprintf(filename, "dl-%d", num);
+ out = fopen(filename, "wb");
+
+ sprintf(url, "https://localhost:8443/upload-%d", num);
+
+ /* get the file size of the local file */
+ stat(upload, &file_info);
+ uploadsize = file_info.st_size;
+
+ indata[num].in = fopen(upload, "rb");
+ indata[num].hnd = hnd;
+
+ /* write to this file */
+ curl_easy_setopt(hnd, CURLOPT_WRITEDATA, out);
+
+ /* we want to use our own read function */
+ curl_easy_setopt(hnd, CURLOPT_READFUNCTION, read_callback);
+ /* read from this file */
+ curl_easy_setopt(hnd, CURLOPT_READDATA, &indata[num]);
+ /* provide the size of the upload */
+ curl_easy_setopt(hnd, CURLOPT_INFILESIZE_LARGE, uploadsize);
+
+ /* send in the URL to store the upload as */
+ curl_easy_setopt(hnd, CURLOPT_URL, url);
+
+ /* upload please */
+ curl_easy_setopt(hnd, CURLOPT_UPLOAD, 1L);
+
+ /* send it verbose for max debuggaility */
+ curl_easy_setopt(hnd, CURLOPT_VERBOSE, 1L);
+ curl_easy_setopt(hnd, CURLOPT_DEBUGFUNCTION, my_trace);
+
+ /* HTTP/2 please */
+ curl_easy_setopt(hnd, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2_0);
+
+ /* we use a self-signed test server, skip verification during debugging */
+ curl_easy_setopt(hnd, CURLOPT_SSL_VERIFYPEER, 0L);
+ curl_easy_setopt(hnd, CURLOPT_SSL_VERIFYHOST, 0L);
+
+ curl_hnd[num] = hnd;
+}
+
+/*
+ * Upload all files over HTTP/2, using the same physical connection!
+ */
+int main(int argc, char **argv)
+{
+ CURL *easy[NUM_HANDLES];
+ CURLM *multi_handle;
+ int i;
+ int still_running; /* keep number of running handles */
+ const char *filename = "index.html";
+
+ if(argc > 1)
+ /* if given a number, do that many transfers */
+ num_transfers = atoi(argv[1]);
+
+ if(argc > 2)
+ /* if given a file name, upload this! */
+ filename = argv[2];
+
+ if(!num_transfers || (num_transfers > NUM_HANDLES))
+ num_transfers = 3; /* a suitable low default */
+
+ /* init a multi stack */
+ multi_handle = curl_multi_init();
+
+ for(i=0; i<num_transfers; i++) {
+ easy[i] = curl_easy_init();
+ /* set options */
+ setup(easy[i], i, filename);
+
+ /* add the individual transfer */
+ curl_multi_add_handle(multi_handle, easy[i]);
+ }
+
+ /* For now (at least) we use bit 1 in the pipelining option to switch on
+ HTTP/2 multiplexing */
+ curl_multi_setopt(multi_handle, CURLMOPT_PIPELINING, CURLPIPE_MULTIPLEX);
+
+ /* We do HTTP/2 so let's stick to one connection per host */
+ curl_multi_setopt(multi_handle, CURLMOPT_MAX_HOST_CONNECTIONS, 1L);
+
+ /* we start some action by calling perform right away */
+ curl_multi_perform(multi_handle, &still_running);
+
+ do {
+ struct timeval timeout;
+ int rc; /* select() return code */
+ CURLMcode mc; /* curl_multi_fdset() return code */
+
+ fd_set fdread;
+ fd_set fdwrite;
+ fd_set fdexcep;
+ int maxfd = -1;
+
+ long curl_timeo = -1;
+
+ FD_ZERO(&fdread);
+ FD_ZERO(&fdwrite);
+ FD_ZERO(&fdexcep);
+
+ /* set a suitable timeout to play around with */
+ timeout.tv_sec = 1;
+ timeout.tv_usec = 0;
+
+ curl_multi_timeout(multi_handle, &curl_timeo);
+ if(curl_timeo >= 0) {
+ timeout.tv_sec = curl_timeo / 1000;
+ if(timeout.tv_sec > 1)
+ timeout.tv_sec = 1;
+ else
+ timeout.tv_usec = (curl_timeo % 1000) * 1000;
+ }
+
+ /* get file descriptors from the transfers */
+ mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
+
+ /* On success the value of maxfd is guaranteed to be >= -1. We call
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) there are
+ no fds ready yet so we call select(0, ...) --or Sleep() on Windows--
+ to sleep 100ms, which is the minimum suggested value in the
+ curl_multi_fdset() doc. */
+
+ if(maxfd == -1) {
+#ifdef _WIN32
+ Sleep(100);
+ rc = 0;
+#else
+ /* Portable sleep for platforms other than Windows. */
+ struct timeval wait = { 0, 100 * 1000 }; /* 100ms */
+ rc = select(0, NULL, NULL, NULL, &wait);
+#endif
+ }
+ else {
+ /* Note that on some platforms 'timeout' may be modified by select().
+ If you need access to the original value save a copy beforehand. */
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ }
+
+ switch(rc) {
+ case -1:
+ /* select error */
+ break;
+ case 0:
+ default:
+ /* timeout or readable/writable sockets */
+ curl_multi_perform(multi_handle, &still_running);
+ break;
+ }
+ } while(still_running);
+
+ curl_multi_cleanup(multi_handle);
+
+ for(i=0; i<num_transfers; i++)
+ curl_easy_cleanup(easy[i]);
+
+ return 0;
+}