| 437 | } |
| 438 | |
| 439 | void onError(Object err) { |
| 440 | if (this.verbose) { |
| 441 | System.err.println( getFormattedDate() + "WsClient error on " + this.url + ": " + err); |
| 442 | } |
| 443 | this.isConnected = false; |
| 444 | this.startedConnecting.set(false); |
| 445 | this.error = true; |
| 446 | |
| 447 | Throwable t = (err instanceof Throwable th) |
| 448 | ? th |
| 449 | : new RuntimeException(String.valueOf(err)); |
| 450 | |
| 451 | // Wrap raw Netty / I/O / SSL exceptions in NetworkError so the test |
| 452 | // harness's isTemporaryFailure() check (instanceof OperationFailed) |
| 453 | // treats them as transient — matches Python's `NetworkError(str(e))` |
| 454 | // behaviour. Without this, a handshake 4xx or socket reset propagates |
| 455 | // out of `watch()` as the raw WebSocketHandshakeException and tests |
| 456 | // mark it as a fatal failure instead of retrying. |
| 457 | Throwable wrapped = wrapAsNetworkError(t); |
| 458 | |
| 459 | // Complete-then-replace: surface the error to current awaiters and |
| 460 | // install a fresh future for the next connect() attempt. |
| 461 | synchronized (connectedLock) { |
| 462 | if (!this.connected.isDone()) { |
| 463 | this.connected.completeExceptionally(wrapped); |
| 464 | } |
| 465 | this.connected = new CompletableFuture<>(); |
| 466 | } |
| 467 | |
| 468 | if (this.onErrorCallback != null) { |
| 469 | this.onErrorCallback.accept(this, wrapped); |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | /** See onError — wraps connection-level exceptions in NetworkError. */ |
| 474 | private static Throwable wrapAsNetworkError(Throwable t) { |