Update networking layer w/ CURL and emscripten impl

2025-11-08 01:50:36 +11:00
parent a17925904d
commit f6874dc55a
4105 changed files with 694617 additions and 179 deletions
@@ -0,0 +1,193 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  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"
+#include "memdebug.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 mc = curl_multi_perform(multi, &still_running);
+
+    if(still_running)
+      /* wait for activity, timeout or "nothing" */
+      mc = curl_multi_poll(multi, NULL, 0, 1000, NULL);
+
+    if(mc)
+      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;
+}