raylib-wasm-transpiler/tools/js-class-c-struct-transpiler/test/test_client.c

#include <stdio.h>
#include <stdlib.h>
#include <emscripten/websocket.h>
#include <assert.h>
#include "build/types.h"

EM_BOOL WebSocketOpen(int eventType, const EmscriptenWebSocketOpenEvent *e, void *userData) {
  printf("open(eventType=%d, userData=%p)\n", eventType, userData);

  LoginRequest req = (LoginRequest){
    "Zongor",
    "Password"
  };

  emscripten_websocket_send_binary(e->socket, &req, sizeof(req));

  return 0;
}

EM_BOOL WebSocketClose(int eventType, const EmscriptenWebSocketCloseEvent *e, void *userData) {
  printf("close(eventType=%d, wasClean=%d, code=%d, reason=%s, userData=%p)\n", eventType, e->wasClean, e->code, e->reason, userData);
  return 0;
}

EM_BOOL WebSocketError(int eventType, const EmscriptenWebSocketErrorEvent *e, void *userData) {
  printf("error(eventType=%d, userData=%p)\n", eventType, userData);
  return 0;
}

EM_BOOL WebSocketMessage(int eventType, const EmscriptenWebSocketMessageEvent *e, void *userData) {
  printf("message(eventType=%d, userData=%p data=%p, numBytes=%d, isText=%d)\n", eventType, userData, e->data, e->numBytes, e->isText);

  LoginResponse response;
  memcpy(&response, e->data, sizeof response);

  printf("response: %d\n", response.success);

  emscripten_websocket_close(e->socket, 0, 0);
  emscripten_websocket_delete(e->socket);
  emscripten_force_exit(0);
  return 0;
}

int main() {
  assert(emscripten_websocket_is_supported());

  EmscriptenWebSocketCreateAttributes attr;
  emscripten_websocket_init_create_attributes(&attr);

  const char *url = "ws://localhost:8089/";
  attr.url = url;
  // We don't really use a special protocol on the server backend in this test,
  // but check that it can be passed.
  attr.protocols = "binary,base64";

  EMSCRIPTEN_WEBSOCKET_T socket = emscripten_websocket_new(&attr);
  assert(socket >= 0);

  // URL:
  int urlLength = 0;
  EMSCRIPTEN_RESULT res = emscripten_websocket_get_url_length(socket, &urlLength);
  assert(res == EMSCRIPTEN_RESULT_SUCCESS);
  assert(urlLength == strlen(url)+1);

  char *url2 = malloc(urlLength);
  res = emscripten_websocket_get_url(socket, url2, urlLength);
  assert(res == EMSCRIPTEN_RESULT_SUCCESS);
  printf("url: %s, verified: %s, length: %d\n", url, url2, urlLength);
  assert(!strcmp(url, url2));

  // Protocol:
  int protocolLength = 0;
  res = emscripten_websocket_get_protocol_length(socket, &protocolLength);
  assert(res == EMSCRIPTEN_RESULT_SUCCESS);
  assert(protocolLength == 1); // Null byte

  char *protocol = malloc(protocolLength);
  res = emscripten_websocket_get_protocol(socket, protocol, protocolLength);
  assert(res == EMSCRIPTEN_RESULT_SUCCESS);
  // We don't really use a special protocol on the server backend in this test,
  // but test that it comes out as an empty string at least.
  assert(!strcmp(protocol, ""));

  // Extensions:
  int extensionsLength = 0;
  res = emscripten_websocket_get_extensions_length(socket, &extensionsLength);
  assert(res == EMSCRIPTEN_RESULT_SUCCESS);
  assert(extensionsLength == 1); // Null byte

  char *extensions = malloc(extensionsLength);
  res = emscripten_websocket_get_extensions(socket, extensions, extensionsLength);
  assert(res == EMSCRIPTEN_RESULT_SUCCESS);
  // We don't really use any extensions on the server backend in this test, but
  // test that it comes out as an empty string at least.
  assert(!strcmp(extensions, ""));

  emscripten_websocket_set_onopen_callback(socket, (void*)0x42, WebSocketOpen);
  emscripten_websocket_set_onclose_callback(socket, (void*)0x43, WebSocketClose);
  emscripten_websocket_set_onerror_callback(socket, (void*)0x44, WebSocketError);
  emscripten_websocket_set_onmessage_callback(socket, (void*)0x45, WebSocketMessage);
  emscripten_exit_with_live_runtime();
  return 0;
}