add version reporting

client/build.sh

@@ -75,6 +75,10 @@ cp $JAVSCRIPT_DIR/main.js $OUT_FILE
 sed -i "/__emscripten_output__/r $MODULE_FILE" $OUT_FILE
 rm $MODULE_FILE
 
+#set version number
+VERSION=$(cat package.json | jq -r '.version')
+sed -i "s/__library_version__/$VERSION/" $OUT_FILE
+
 #add extra libraries
 sed -i "/__extra_libraries__/r $WISP_CLIENT/polyfill.js" $OUT_FILE
 sed -i "/__extra_libraries__/r $WISP_CLIENT/wisp.js" $OUT_FILE

client/exported_funcs.txt

@@ -3,6 +3,8 @@ start_request
 tick_request
 active_requests
 
+get_version
+
 recv_from_websocket
 send_to_websocket
 close_websocket

client/javascript/main.js

@@ -33,12 +33,14 @@ var websocket_url = null;
 var event_loop = null;
 var active_requests = 0;
 var wasm_ready = false;
+var version_dict = null;
+const libcurl_version = "__library_version__";
 
-function check_loaded() {
+function check_loaded(check_websocket) {
   if (!wasm_ready) {
     throw new Error("wasm not loaded yet, please call libcurl.load_wasm first");
   }
-  if (!websocket_url) {
+  if (!websocket_url && check_websocket) {
     throw new Error("websocket proxy url not set, please call libcurl.set_websocket");
   }
 }
@@ -258,7 +260,7 @@ function perform_request_async(url, params, body) {
 }
 
 async function libcurl_fetch(url, params={}) {
-  check_loaded();
+  check_loaded(true);
   let body = await create_options(params);
   return await perform_request_async(url, params, body);
 }
@@ -273,6 +275,18 @@ function set_websocket_url(url) {
   else Module.websocket.url = url;
 }
 
+function get_version() {
+  if (!wasm_ready) return null;
+  if (version_dict) return version_dict;
+
+  let version_ptr = _get_version();
+  let version_str = UTF8ToString(version_ptr);
+  _free(version_ptr);
+  version_dict = JSON.parse(version_str);
+  version_dict.lib = libcurl_version;
+  return version_dict;
+}
+
 function main() {
   wasm_ready = true;
   _init_curl();
@@ -295,10 +309,13 @@ return {
   load_wasm: load_wasm,
   wisp: _wisp_connections,
   WebSocket: CurlWebSocket,
+  
+  get version() {return get_version()},
   get stdout() {return out},
   set stdout(callback) {out = callback},
   get stderr() {return err},
-  set stderr(callback) {err = callback}
+  set stderr(callback) {err = callback},
+  get ready() {return wasm_ready}
 }
 
 })()

client/javascript/websocket.js

@@ -3,7 +3,7 @@
 class CurlWebSocket extends EventTarget {
   constructor(url, protocols=[]) {
     super();
-    check_loaded();
+    check_loaded(true);
     if (!url.startsWith("wss://") && !url.startsWith("ws://")) {
       throw new SyntaxError("invalid url");
     }

client/libcurl/util.c

@@ -1,5 +1,36 @@
+#include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
+#include "curl/curl.h"
+#include "cjson/cJSON.h"
+
 int starts_with(const char *a, const char *b) {
   return strncmp(a, b, strlen(b)) == 0;
+}
+
+char* get_version() {
+  struct curl_version_info_data *version_info = curl_version_info(CURLVERSION_NOW);
+  cJSON* version_json = cJSON_CreateObject();
+
+  cJSON* protocols_array = cJSON_CreateArray();
+  const char *const *protocols = version_info->protocols;
+  for (; *protocols != NULL; protocols++) {
+    cJSON* protocol_item = cJSON_CreateString(*protocols);
+    cJSON_AddItemToArray(protocols_array, protocol_item);
+  }
+  
+  cJSON* curl_version_item = cJSON_CreateString(version_info->version);
+  cJSON* ssl_version_item = cJSON_CreateString(version_info->ssl_version);
+  cJSON* brotli_version_item = cJSON_CreateString(version_info->brotli_version);
+  cJSON* nghttp2_version_item = cJSON_CreateString(version_info->nghttp2_version);
+  
+  cJSON_AddItemToObject(version_json, "curl", curl_version_item);
+  cJSON_AddItemToObject(version_json, "ssl", ssl_version_item);
+  cJSON_AddItemToObject(version_json, "brotli", brotli_version_item);
+  cJSON_AddItemToObject(version_json, "nghttp2", nghttp2_version_item);
+  cJSON_AddItemToObject(version_json, "protocols", protocols_array);
+
+  char* version_json_str = cJSON_Print(version_json);
+  return version_json_str;
 }

client/package.json

@@ -1,6 +1,6 @@
 {
   "name": "libcurl.js",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "description": "An experimental port of libcurl to WebAssembly for use in the browser.",
   "main": "libcurl.mjs",
   "scripts": {

client/publish.sh

@@ -3,8 +3,11 @@
 #publish libcurl.js as an npm package
 
 ./build.sh all
+tests/run.sh
 
 cp package.json out
 cp ../README.md out
+cp ../LICENSE out
+
 cd out
 npm publish