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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 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 https://curl.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.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "first.h"
#include "testtrace.h"
static FILE *out_download = NULL;
static int setup_h2_serverpush(CURL *curl, const char *url)
{
out_download = curlx_fopen("download_0.data", "wb");
if(!out_download)
return 1; /* failed */
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2_0);
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, out_download);
/* please be verbose */
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, libtest_debug_cb);
curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &debug_config);
/* wait for pipe connection to confirm */
curl_easy_setopt(curl, CURLOPT_PIPEWAIT, 1L);
return 0; /* all is good */
}
static FILE *out_push = NULL;
/* called when there is an incoming push */
static int server_push_callback(CURL *parent,
CURL *curl,
size_t num_headers,
struct curl_pushheaders *headers,
void *userp)
{
char *headp;
size_t i;
int *transfers = (int *)userp;
char filename[128];
static unsigned int count = 0;
(void)parent;
curl_msnprintf(filename, sizeof(filename) - 1, "push%u", count++);
/* here's a new stream, save it in a new file for each new push */
out_push = curlx_fopen(filename, "wb");
if(!out_push) {
/* if we cannot save it, deny it */
curl_mfprintf(stderr, "Failed to create output file for push\n");
return CURL_PUSH_DENY;
}
/* write to this file */
curl_easy_setopt(curl, CURLOPT_WRITEDATA, out_push);
curl_mfprintf(stderr, "**** push callback approves stream %u, "
"got %zu headers!\n", count, num_headers);
for(i = 0; i < num_headers; i++) {
headp = curl_pushheader_bynum(headers, i);
curl_mfprintf(stderr, "**** header %zu: %s\n", i, headp);
}
headp = curl_pushheader_byname(headers, ":path");
if(headp) {
curl_mfprintf(stderr, "**** The PATH is %s\n",
headp /* skip :path + colon */);
}
(*transfers)++; /* one more */
return CURL_PUSH_OK;
}
/*
* Download a file over HTTP/2, take care of server push.
*/
static CURLcode test_cli_h2_serverpush(const char *URL)
{
CURL *curl = NULL;
CURLM *multi;
int transfers = 1; /* we start with one */
CURLcode result = CURLE_OK;
debug_config.nohex = TRUE;
debug_config.tracetime = FALSE;
if(!URL) {
curl_mfprintf(stderr, "need URL as argument\n");
return (CURLcode)2;
}
if(curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
curl_mfprintf(stderr, "curl_global_init() failed\n");
return (CURLcode)3;
}
multi = curl_multi_init();
if(!multi) {
result = (CURLcode)1;
goto cleanup;
}
curl = curl_easy_init();
if(!curl) {
result = (CURLcode)1;
goto cleanup;
}
if(setup_h2_serverpush(curl, URL)) {
curl_mfprintf(stderr, "failed\n");
result = (CURLcode)1;
goto cleanup;
}
curl_multi_setopt(multi, CURLMOPT_PIPELINING, CURLPIPE_MULTIPLEX);
curl_multi_setopt(multi, CURLMOPT_PUSHFUNCTION, server_push_callback);
curl_multi_setopt(multi, CURLMOPT_PUSHDATA, &transfers);
curl_multi_add_handle(multi, curl);
do {
struct CURLMsg *m;
int still_running; /* keep number of running handles */
CURLMcode mresult = curl_multi_perform(multi, &still_running);
if(still_running)
/* wait for activity, timeout or "nothing" */
mresult = curl_multi_poll(multi, NULL, 0, 1000, NULL);
if(mresult)
break;
/*
* A little caution when doing server push is that libcurl itself has
* created and added one or more easy handles but we need to clean them up
* when we are done.
*/
do {
int msgq = 0;
m = curl_multi_info_read(multi, &msgq);
if(m && (m->msg == CURLMSG_DONE)) {
CURL *easy = m->easy_handle;
transfers--;
curl_multi_remove_handle(multi, easy);
curl_easy_cleanup(easy);
}
} while(m);
} while(transfers); /* as long as we have transfers going */
cleanup:
curl_multi_cleanup(multi);
if(out_download)
curlx_fclose(out_download);
if(out_push)
curlx_fclose(out_push);
curl_global_cleanup();
return result;
}
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