[웹 어셈블리, WSAM] An example of emscripten with WebSocket.

An example of emscripten with WebSocket.
  // $ em++ -lwebsocket.js -o index.html main.cpp
   
  #include <emscripten/emscripten.h>
  #include <emscripten/websocket.h>
  #include <stdio.h>
   
  EM_BOOL onopen(int eventType, const EmscriptenWebSocketOpenEvent *websocketEvent, void *userData) {
  puts("onopen");
   
  EMSCRIPTEN_RESULT result;
  result = emscripten_websocket_send_utf8_text(websocketEvent->socket, "hoge");
  if (result) {
  printf("Failed to emscripten_websocket_send_utf8_text(): %d\n", result);
  }
  return EM_TRUE;
  }
  EM_BOOL onerror(int eventType, const EmscriptenWebSocketErrorEvent *websocketEvent, void *userData) {
  puts("onerror");
   
  return EM_TRUE;
  }
  EM_BOOL onclose(int eventType, const EmscriptenWebSocketCloseEvent *websocketEvent, void *userData) {
  puts("onclose");
   
  return EM_TRUE;
  }
  EM_BOOL onmessage(int eventType, const EmscriptenWebSocketMessageEvent *websocketEvent, void *userData) {
  puts("onmessage");
  if (websocketEvent->isText) {
  // For only ascii chars.
  printf("message: %s\n", websocketEvent->data);
  }
   
  EMSCRIPTEN_RESULT result;
  result = emscripten_websocket_close(websocketEvent->socket, 1000, "no reason");
  if (result) {
  printf("Failed to emscripten_websocket_close(): %d\n", result);
  }
  return EM_TRUE;
  }
   
  int main() {
  if (!emscripten_websocket_is_supported()) {
  return 0;
  }
  EmscriptenWebSocketCreateAttributes ws_attrs = {
  "wss://echo.websocket.org",
  NULL,
  EM_TRUE
  };
   
  EMSCRIPTEN_WEBSOCKET_T ws = emscripten_websocket_new(&ws_attrs);
  emscripten_websocket_set_onopen_callback(ws, NULL, onopen);
  emscripten_websocket_set_onerror_callback(ws, NULL, onerror);
  emscripten_websocket_set_onclose_callback(ws, NULL, onclose);
  emscripten_websocket_set_onmessage_callback(ws, NULL, onmessage);
  }

@adrianmay
 

 

Doesn't work at all:

[413932:413932:1001/144526.633769:ERROR:vaapi_wrapper.cc(1051)] FillProfileInfo_Locked failed for va_profile VAProfileH264Main and entrypoint VAEntrypointVLD
[413932:413932:1001/144526.633794:ERROR:vaapi_wrapper.cc(1104)] vaQuerySurfaceAttributes failed, VA error: invalid parameter
[413932:413932:1001/144526.633813:ERROR:vaapi_wrapper.cc(1051)] FillProfileInfo_Locked failed for va_profile VAProfileH264High and entrypoint VAEntrypointVLD
[413899:413990:1001/144526.647002:ERROR:object_proxy.cc(642)] Failed to call method: org.freedesktop.DBus.Properties.Get: object_path= /org/freedesktop/UPower: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.UPower was not provided by any .service files
[413899:413990:1001/144526.647120:ERROR:object_proxy.cc(642)] Failed to call method: org.freedesktop.UPower.GetDisplayDevice: object_path= /org/freedesktop/UPower: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.UPower was not provided by any .service files
[413899:413990:1001/144526.647212:ERROR:object_proxy.cc(642)] Failed to call method: org.freedesktop.UPower.EnumerateDevices: object_path= /org/freedesktop/UPower: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.UPower was not provided by any .service files
[413899:413940:1001/144528.689677:ERROR:chrome_browser_main_extra_parts_metrics.cc(228)] crbug.com/1216328: Checking Bluetooth availability started. Please report if there is no report that this ends.
[413899:413940:1001/144528.689703:ERROR:chrome_browser_main_extra_parts_metrics.cc(231)] crbug.com/1216328: Checking Bluetooth availability ended.
[413899:413940:1001/144528.689713:ERROR:chrome_browser_main_extra_parts_metrics.cc(234)] crbug.com/1216328: Checking default browser status started. Please report if there is no report that this ends.
[413899:413940:1001/144528.812047:ERROR:chrome_browser_main_extra_parts_metrics.cc(238)] crbug.com/1216328: Checking default browser status ended.
 
@octopoulos
 

 

It works fine for me, but I had to use another echo server, I used the one from this page: http://websockets.chilkat.io/

 

경축! 아무것도 안하여 에스천사게임즈가 새로운 모습으로 재오픈 하였습니다.
어린이용이며, 설치가 필요없는 브라우저 게임입니다.
https://s1004games.com

 

[출처] https://gist.github.com/nus/564e9e57e4c107faa1a45b8332c265b9

 

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