Add default 404 error page

src/HttpContext.h

@@ -171,6 +171,10 @@ struct HttpContext {
  /* Route the method and URL */
  selectedRouter->getUserData() = {(HttpResponse<SSL> *) s, httpRequest};
  if (!selectedRouter->route(httpRequest->getCaseSensitiveMethod(), httpRequest->getUrl())) {
+ /* We don't care if it reaches the client or not */
+ us_socket_write(SSL, (us_socket_t *) s, httpErrorResponses[HTTP_ERROR_404_FILE_NOT_FOUND].data(), (int) httpErrorResponses[HTTP_ERROR_404_FILE_NOT_FOUND].length(), false);
+ us_socket_shutdown(SSL, (us_socket_t *) s);
+
  /* We have to force close this socket as we have no handler for it */
  us_socket_close(SSL, (us_socket_t *) s, 0, nullptr);
  return nullptr;

src/HttpErrors.h

@@ -25,15 +25,17 @@ namespace uWS {
 enum HttpError {
  HTTP_ERROR_505_HTTP_VERSION_NOT_SUPPORTED = 1,
  HTTP_ERROR_431_REQUEST_HEADER_FIELDS_TOO_LARGE = 2,
- HTTP_ERROR_400_BAD_REQUEST = 3
+ HTTP_ERROR_400_BAD_REQUEST = 3,
+ HTTP_ERROR_404_FILE_NOT_FOUND = 4
 };
 
 /* Returned parser errors match this LUT. */
 static const std::string_view httpErrorResponses[] = {
  "", /* Zeroth place is no error so don't use it */
  "HTTP/1.1 505 HTTP Version Not Supported\r\n\r\n<h1>HTTP Version Not Supported</h1><p>This server does not support HTTP/1.0.</p><hr><i>uWebSockets/20 Server</i>",
  "HTTP/1.1 431 Request Header Fields Too Large\r\n\r\n<h1>Request Header Fields Too Large</h1><hr><i>uWebSockets/20 Server</i>",
- "HTTP/1.1 400 Bad Request\r\n\r\n<h1>Bad Request</h1><hr><i>uWebSockets/20 Server</i>"
+ "HTTP/1.1 400 Bad Request\r\n\r\n<h1>Bad Request</h1><hr><i>uWebSockets/20 Server</i>",
+ "HTTP/1.1 404 File Not Found\r\n\r\n<h1>File Not Found</h1><hr><i>uWebSockets/20 Server</i>"
 };
 }