ispectify_ws is a WebSocket interceptor for the ISpect toolkit, built on top of the ws client. It captures every sent/received frame, exposes connection lifecycle events, and redacts sensitive data before logging.

• Frame-level capture for sent and received messages.
• Error and close-event logging with stack traces.
• Pluggable redaction — reuses the same engine as the HTTP interceptors.

Install

dependencies:
  ws: ^1.0.0
  ispectify: ^5.0.0-dev43
  ispectify_ws: ^5.0.0-dev43

Quick start

import 'package:ws/ws.dart';
import 'package:ispect/ispect.dart';
import 'package:ispectify_ws/ispectify_ws.dart';

final interceptor = ISpectWSInterceptor(
  logger: logger,
  settings: const ISpectWSInterceptorSettings(
    enabled: true,
    printSentData: true,
    printReceivedData: true,
    printReceivedMessage: true,
    printErrorData: true,
    printErrorMessage: true,
  ),
);

final client = WebSocketClient(
  WebSocketOptions.common(interceptors: [interceptor]),
);

// The interceptor needs a back-reference to the client for lifecycle events.
interceptor.setClient(client);

Settings

const settings = ISpectWSInterceptorSettings(
  enabled: true,
  printSentData: true,
  printReceivedData: true,
  printReceivedMessage: true,
  printErrorData: true,
  printErrorMessage: true,
  enableRedaction: true,
);

Data redaction

Sensitive data is automatically masked before it reaches logs or observers. Redaction is enabled by default — built-in rules cover auth headers, tokens, passwords, API keys, cookies, PII (SSN, passport, driver's license), financial data (credit cards, IBAN), phone numbers, and more.

The same redaction model is used beyond initial capture: supported exports, clipboard helpers, cURL generation, and observer payloads can pass through the shared redaction pipeline before data leaves the app/debug session.

Redaction works best together with focused capture. Keep body/header logging disabled when payload contents are not needed, and register project-specific keys for business identifiers that only your application understands.

Custom keys and patterns

import 'package:ispectify/ispectify.dart';

final redactor = RedactionService(
  sensitiveKeys: {
    ...defaultSensitiveKeys,
    'x-custom-secret',
    'internal_token',
  },
  sensitiveKeyPatterns: [
    RegExp(r'my_app_secret_\w+', caseSensitive: false),
  ],
  // Keys where the value is replaced entirely (not edge-masked).
  fullyMaskedKeys: {'filename'},
  placeholder: '***',
  visibleEdgeLength: 3,
  redactBinary: true,
  redactBase64: true,
);

Ignoring defaults

final redactor = RedactionService(
  // e.g., ?mobile=true is a platform flag, not a phone number.
  ignoredKeys: {'mobile', 'platform_token'},
  ignoredValues: {'<test-token>', 'public-api-key'},
);

Disabling

Each interceptor accepts enableRedaction: false on its settings object. See the per-package README for the exact settings type.

Only disable redaction in isolated local or deterministic test environments. Exported sessions and observer events should be handled according to the data they contain.

The ISpect toolkit

ISpect is a modular monorepo. Install only what your project needs — each package works independently.

Package	What it does
ispect	Flutter UI — debug panel, log viewer, navigation observer, inspector integration
ispect_layout	Visual layout inspector — sizes, constraints, decorations, compare mode, color picker
ispectify	Pure-Dart logging core — typed log entries, filtering, tracing, observers
ispectify_dio	Dio HTTP interceptor with automatic redaction
ispectify_http	http package interceptor with automatic redaction
ispectify_ws	WebSocket traffic capture with automatic redaction
ispectify_db	Database operation tracing (SQL, ORM, KV stores)
ispectify_bloc	BLoC event / state / transition observer

Contributing

Contributions are welcome. See CONTRIBUTING.md for guidelines, and open issues or pull requests at the ISpect repository.

License

MIT — see LICENSE.

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