| 1 | import { io } from "/vendor/socket.io.esm.min.js"; |
| 2 | import { getCsrfToken, getRuntimeId, invalidateCsrfToken } from "/js/api.js"; |
| 3 | import { getCurrentUserISOString } from "/js/time-utils.js"; |
| 4 | |
| 5 | const MAX_PAYLOAD_BYTES = 50 * 1024 * 1024; // 50MB hard cap per contract |
| 6 | const DEFAULT_TIMEOUT_MS = 0; |
| 7 | |
| 8 | const _UUID_HEX = [..."0123456789abcdef"]; |
| 9 | const _OPTION_KEYS = new Set(["correlationId", "includeHandlers", "excludeHandlers", "excludeSids"]); |
| 10 | |
| 11 | /** |
| 12 | * @param {unknown} value |
| 13 | * @param {string} fieldName |
| 14 | * @returns {Record<string, any>} |
| 15 | */ |
| 16 | function assertPlainObject(value, fieldName) { |
| 17 | if (!value || typeof value !== "object" || Array.isArray(value)) { |
| 18 | throw new Error(`${fieldName} must be a plain object`); |
| 19 | } |
| 20 | return /** @type {Record<string, any>} */ (value); |
| 21 | } |
| 22 | |
| 23 | /** |
| 24 | * @returns {string} |
| 25 | */ |
| 26 | function generateUuid() { |
| 27 | if (typeof crypto !== "undefined" && typeof crypto.randomUUID === "function") { |
| 28 | return crypto.randomUUID(); |
| 29 | } |
| 30 | |
| 31 | const buffer = new Uint8Array(16); |
| 32 | if (typeof crypto !== "undefined" && typeof crypto.getRandomValues === "function") { |
| 33 | crypto.getRandomValues(buffer); |
| 34 | } else { |
| 35 | for (let i = 0; i < buffer.length; i += 1) { |
| 36 | buffer[i] = Math.floor(Math.random() * 256); |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | buffer[6] = (buffer[6] & 0x0f) | 0x40; // version 4 |
| 41 | buffer[8] = (buffer[8] & 0x3f) | 0x80; // variant 10 |
| 42 | |
| 43 | let uuid = ""; |
| 44 | for (let i = 0; i < buffer.length; i += 1) { |
| 45 | if (i === 4 || i === 6 || i === 8 || i === 10) { |
| 46 | uuid += "-"; |
| 47 | } |
| 48 | uuid += _UUID_HEX[buffer[i] >> 4]; |
| 49 | uuid += _UUID_HEX[buffer[i] & 0x0f]; |
| 50 | } |
| 51 | return uuid; |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * @param {unknown} value |
| 56 | * @param {string} fieldName |
| 57 | * @param {{ allowEmpty?: boolean }} [options] |
| 58 | * @returns {string[] | undefined} |
| 59 | */ |
| 60 | function normalizeStringList(value, fieldName, options = {}) { |
| 61 | if (value == null) return undefined; |
| 62 | const raw = Array.isArray(value) ? value : [value]; |
| 63 | const normalized = []; |
| 64 | for (const item of raw) { |
| 65 | if (typeof item !== "string" || item.trim().length === 0) { |
| 66 | throw new Error(`${fieldName} must contain non-empty strings`); |
| 67 | } |
| 68 | normalized.push(item.trim()); |
| 69 | } |
| 70 | const deduped = Array.from(new Set(normalized)); |
| 71 | if (!options.allowEmpty && deduped.length === 0) { |
| 72 | throw new Error(`${fieldName} must contain at least one value`); |
| 73 | } |
| 74 | return deduped.length > 0 ? deduped : undefined; |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * @param {unknown} value |
| 79 | * @returns {string[] | undefined} |
| 80 | */ |
| 81 | function normalizeSidList(value) { |
| 82 | return normalizeStringList(value, "excludeSids", { allowEmpty: true }); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * @param {unknown} value |
| 87 | * @returns {string | undefined} |
| 88 | */ |
| 89 | function normalizeCorrelationId(value) { |
| 90 | if (value == null) return undefined; |
| 91 | if (typeof value !== "string") { |
| 92 | throw new Error("correlationId must be a non-empty string"); |
| 93 | } |
| 94 | const trimmed = value.trim(); |
| 95 | if (!trimmed) { |
| 96 | throw new Error("correlationId must be a non-empty string"); |
| 97 | } |
| 98 | return trimmed; |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * @param {unknown} value |
| 103 | * @returns {string} |
| 104 | */ |
| 105 | function normalizeNamespace(value) { |
| 106 | if (typeof value !== "string") { |
| 107 | throw new Error("namespace must be a non-empty string"); |
| 108 | } |
| 109 | const trimmed = value.trim(); |
| 110 | if (!trimmed) { |
| 111 | throw new Error("namespace must be a non-empty string"); |
| 112 | } |
| 113 | if (trimmed === "/") { |
| 114 | return "/"; |
| 115 | } |
| 116 | return trimmed.startsWith("/") ? trimmed : `/${trimmed}`; |
| 117 | } |
| 118 | |
| 119 | function hasWildcardPattern(value) { |
| 120 | return typeof value === "string" && value.includes("*"); |
| 121 | } |
| 122 | |
| 123 | function compileEventPattern(value) { |
| 124 | const escaped = value.replace(/[|\\{}()[\]^$+?.]/g, "\\$&"); |
| 125 | return new RegExp(`^${escaped.replaceAll("*", ".*")}$`); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Generate a correlation identifier using UUIDv4 semantics. |
| 130 | * |
| 131 | * @param {string} [prefix] |
| 132 | * @returns {string} |
| 133 | */ |
| 134 | export function createCorrelationId(prefix) { |
| 135 | const uuid = generateUuid(); |
| 136 | if (typeof prefix !== "string" || prefix.trim().length === 0) { |
| 137 | return uuid; |
| 138 | } |
| 139 | |
| 140 | const normalizedPrefix = prefix.trim(); |
| 141 | const suffix = normalizedPrefix.endsWith("-") ? "" : "-"; |
| 142 | return `${normalizedPrefix}${suffix}${uuid}`; |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * @typedef {Object} NormalizedProducerOptions |
| 147 | * @property {string[]=} includeHandlers |
| 148 | * @property {string[]=} excludeHandlers |
| 149 | * @property {string[]=} excludeSids |
| 150 | * @property {string=} correlationId |
| 151 | */ |
| 152 | |
| 153 | /** |
| 154 | * Normalise producer options used for emit/request/broadcast helpers. |
| 155 | * |
| 156 | * @param {Record<string, any> | undefined} options |
| 157 | * @returns {NormalizedProducerOptions} |
| 158 | */ |
| 159 | export function normalizeProducerOptions(options) { |
| 160 | if (options == null) return {}; |
| 161 | const source = assertPlainObject(options, "options"); |
| 162 | |
| 163 | const unknownKeys = Object.keys(source).filter((key) => !_OPTION_KEYS.has(key)); |
| 164 | if (unknownKeys.length > 0) { |
| 165 | throw new Error(`Unsupported producer option(s): ${unknownKeys.join(", ")}`); |
| 166 | } |
| 167 | |
| 168 | const normalized = {}; |
| 169 | |
| 170 | const includeHandlers = normalizeStringList(source.includeHandlers, "includeHandlers"); |
| 171 | if (includeHandlers) { |
| 172 | normalized.includeHandlers = includeHandlers; |
| 173 | } |
| 174 | |
| 175 | const excludeHandlers = normalizeStringList( |
| 176 | source.excludeHandlers, |
| 177 | "excludeHandlers", |
| 178 | { allowEmpty: true }, |
| 179 | ); |
| 180 | if (excludeHandlers && excludeHandlers.length > 0) { |
| 181 | normalized.excludeHandlers = excludeHandlers; |
| 182 | } |
| 183 | |
| 184 | const excludeSids = normalizeSidList(source.excludeSids); |
| 185 | if (excludeSids && excludeSids.length > 0) { |
| 186 | normalized.excludeSids = excludeSids; |
| 187 | } |
| 188 | |
| 189 | const correlationId = normalizeCorrelationId(source.correlationId); |
| 190 | if (correlationId) { |
| 191 | normalized.correlationId = correlationId; |
| 192 | } |
| 193 | |
| 194 | if (normalized.includeHandlers && normalized.excludeHandlers) { |
| 195 | throw new Error("includeHandlers and excludeHandlers cannot be used together"); |
| 196 | } |
| 197 | |
| 198 | return normalized; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * @typedef {Object} ServerDeliveryEnvelope |
| 203 | * @property {string} handlerId |
| 204 | * @property {string} eventId |
| 205 | * @property {string} correlationId |
| 206 | * @property {string} ts |
| 207 | * @property {Record<string, any>} data |
| 208 | */ |
| 209 | |
| 210 | /** |
| 211 | * Validate a server-sent delivery envelope before invoking subscribers. |
| 212 | * |
| 213 | * @param {unknown} envelope |
| 214 | * @returns {ServerDeliveryEnvelope} |
| 215 | */ |
| 216 | export function validateServerEnvelope(envelope) { |
| 217 | const value = assertPlainObject(envelope, "envelope"); |
| 218 | |
| 219 | const handlerId = normalizeCorrelationId(value.handlerId)?.trim(); |
| 220 | if (!handlerId) { |
| 221 | throw new Error("Server envelope missing handlerId"); |
| 222 | } |
| 223 | |
| 224 | const eventId = normalizeCorrelationId(value.eventId)?.trim(); |
| 225 | if (!eventId) { |
| 226 | throw new Error("Server envelope missing eventId"); |
| 227 | } |
| 228 | |
| 229 | const correlationId = normalizeCorrelationId(value.correlationId); |
| 230 | if (!correlationId) { |
| 231 | throw new Error("Server envelope missing correlationId"); |
| 232 | } |
| 233 | |
| 234 | if (typeof value.ts !== "string" || value.ts.trim().length === 0) { |
| 235 | throw new Error("Server envelope missing timestamp"); |
| 236 | } |
| 237 | const timestamp = value.ts.trim(); |
| 238 | if (Number.isNaN(Date.parse(timestamp))) { |
| 239 | throw new Error("Server envelope timestamp is invalid"); |
| 240 | } |
| 241 | |
| 242 | let data = value.data; |
| 243 | if (data == null) { |
| 244 | data = {}; |
| 245 | } else if (typeof data !== "object" || Array.isArray(data)) { |
| 246 | throw new Error("Server envelope data must be a plain object"); |
| 247 | } |
| 248 | |
| 249 | const normalized = { |
| 250 | handlerId, |
| 251 | eventId, |
| 252 | correlationId, |
| 253 | ts: timestamp, |
| 254 | data: Object.freeze({ ...data }), |
| 255 | }; |
| 256 | |
| 257 | return Object.freeze(normalized); |
| 258 | } |
| 259 | |
| 260 | class WebSocketClient { |
| 261 | constructor(namespace = "/") { |
| 262 | this.namespace = normalizeNamespace(namespace); |
| 263 | this.socket = null; |
| 264 | this.connected = false; |
| 265 | this.connecting = false; |
| 266 | this.connectPromise = null; |
| 267 | this.subscriptions = new Map(); // eventType -> { handler, callbacks: Set<Function> } |
| 268 | this.connectCallbacks = new Set(); |
| 269 | this.disconnectCallbacks = new Set(); |
| 270 | this.errorCallbacks = new Set(); |
| 271 | this.isDevelopment = Boolean(window.runtimeInfo?.isDevelopment); |
| 272 | this._manualDisconnect = false; |
| 273 | this._hasConnectedOnce = false; |
| 274 | this._lastRuntimeId = null; |
| 275 | this._csrfInvalidatedForConnectError = false; |
| 276 | this._connectErrorRetryTimer = null; |
| 277 | this._connectErrorRetryAttempt = 0; |
| 278 | this._handlers = new Set(); |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Declare WS handler paths to activate on connect (e.g. "ws_webui"). |
| 283 | * Must be called before connect(). |
| 284 | * @param {string[]} handlers |
| 285 | */ |
| 286 | addHandlers(handlers) { |
| 287 | if (!Array.isArray(handlers)) return; |
| 288 | let changed = false; |
| 289 | for (const h of handlers) { |
| 290 | if (typeof h === "string" && h.trim()) { |
| 291 | const key = h.trim(); |
| 292 | if (!this._handlers.has(key)) { |
| 293 | this._handlers.add(key); |
| 294 | changed = true; |
| 295 | } |
| 296 | } |
| 297 | } |
| 298 | // If new handlers were added while already connected, reconnect so the |
| 299 | // updated handler list is sent to the server via the auth callback. |
| 300 | if (changed && this.socket && this.socket.connected) { |
| 301 | this.debugLog("addHandlers: reconnecting to activate new handlers", [...this._handlers]); |
| 302 | this.socket.disconnect(); |
| 303 | this.socket.connect(); |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | _clearConnectErrorRetryTimer() { |
| 308 | if (this._connectErrorRetryTimer) { |
| 309 | clearTimeout(this._connectErrorRetryTimer); |
| 310 | this._connectErrorRetryTimer = null; |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | _scheduleConnectErrorRetry(reason) { |
| 315 | if (this._manualDisconnect) return; |
| 316 | if (this.connected) return; |
| 317 | if (!this.socket) return; |
| 318 | if (this.socket.connected) return; |
| 319 | if (this._connectErrorRetryTimer) return; |
| 320 | |
| 321 | const attempt = Math.max(0, Number(this._connectErrorRetryAttempt) || 0); |
| 322 | const baseMs = 250; |
| 323 | const capMs = 10000; |
| 324 | const delayMs = Math.min(capMs, baseMs * 2 ** attempt); |
| 325 | this._connectErrorRetryAttempt = attempt + 1; |
| 326 | |
| 327 | this.debugLog("schedule connect retry", { reason, attempt, delayMs }); |
| 328 | this._connectErrorRetryTimer = setTimeout(() => { |
| 329 | this._connectErrorRetryTimer = null; |
| 330 | if (this._manualDisconnect) return; |
| 331 | if (this.connected) return; |
| 332 | this.connect().catch(() => {}); |
| 333 | }, delayMs); |
| 334 | } |
| 335 | |
| 336 | buildPayload(data) { |
| 337 | const ts = getCurrentUserISOString(); |
| 338 | if (data == null) { |
| 339 | return { ts, data: {} }; |
| 340 | } |
| 341 | if (typeof data !== "object" || Array.isArray(data)) { |
| 342 | throw new Error("WebSocket payload must be a plain object"); |
| 343 | } |
| 344 | return { ts, data: { ...data } }; |
| 345 | } |
| 346 | |
| 347 | applyProducerOptions(payload, normalizedOptions, allowances) { |
| 348 | const result = payload; |
| 349 | |
| 350 | if (normalizedOptions.includeHandlers) { |
| 351 | if (!allowances.includeHandlers) { |
| 352 | throw new Error("This operation does not support includeHandlers"); |
| 353 | } |
| 354 | result.includeHandlers = [...normalizedOptions.includeHandlers]; |
| 355 | } |
| 356 | |
| 357 | if (normalizedOptions.excludeHandlers) { |
| 358 | if (!allowances.excludeHandlers) { |
| 359 | throw new Error("This operation does not support excludeHandlers"); |
| 360 | } |
| 361 | result.excludeHandlers = [...normalizedOptions.excludeHandlers]; |
| 362 | } |
| 363 | |
| 364 | if (normalizedOptions.excludeSids) { |
| 365 | if (!allowances.excludeSids) { |
| 366 | throw new Error("This operation does not support excludeSids"); |
| 367 | } |
| 368 | result.excludeSids = [...normalizedOptions.excludeSids]; |
| 369 | } |
| 370 | |
| 371 | if (normalizedOptions.correlationId) { |
| 372 | result.correlationId = normalizedOptions.correlationId; |
| 373 | } |
| 374 | |
| 375 | return result; |
| 376 | } |
| 377 | |
| 378 | setDevelopmentFlag(value) { |
| 379 | const normalized = Boolean(value); |
| 380 | this.isDevelopment = normalized; |
| 381 | window.runtimeInfo = { ...(window.runtimeInfo || {}), isDevelopment: normalized }; |
| 382 | } |
| 383 | |
| 384 | debugLog(...args) { |
| 385 | if (this.isDevelopment) { |
| 386 | console.debug(`[websocket:${this.namespace}]`, ...args); |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | async connect() { |
| 391 | if (this.connected) return; |
| 392 | if (this.connectPromise) return this.connectPromise; |
| 393 | |
| 394 | this._manualDisconnect = false; |
| 395 | this.connecting = true; |
| 396 | this.connectPromise = (async () => { |
| 397 | if (!this.socket) { |
| 398 | this.initializeSocket(); |
| 399 | } |
| 400 | |
| 401 | if (this.socket.connected) return; |
| 402 | |
| 403 | // Ensure the current runtime-bound session + CSRF cookies exist before initiating |
| 404 | // the Engine.IO handshake. This is required for seamless reconnect after backend |
| 405 | // restarts that rotate runtime_id and session cookie names. |
| 406 | try { |
| 407 | await getCsrfToken(); |
| 408 | } catch (error) { |
| 409 | this.debugLog("csrf prefetch failed - continuing", { |
| 410 | error: error instanceof Error ? error.message : String(error), |
| 411 | }); |
| 412 | } |
| 413 | |
| 414 | await new Promise((resolve, reject) => { |
| 415 | const onConnect = () => { |
| 416 | this.socket.off("connect_error", onError); |
| 417 | resolve(); |
| 418 | }; |
| 419 | const onError = (error) => { |
| 420 | this.socket.off("connect", onConnect); |
| 421 | reject(error instanceof Error ? error : new Error(String(error))); |
| 422 | }; |
| 423 | |
| 424 | this.socket.once("connect", onConnect); |
| 425 | this.socket.once("connect_error", onError); |
| 426 | this.socket.connect(); |
| 427 | }); |
| 428 | })() |
| 429 | .catch((error) => { |
| 430 | throw new Error(`WebSocket connection failed: ${error.message || error}`); |
| 431 | }) |
| 432 | .finally(() => { |
| 433 | this.connecting = false; |
| 434 | this.connectPromise = null; |
| 435 | }); |
| 436 | |
| 437 | return this.connectPromise; |
| 438 | } |
| 439 | |
| 440 | async disconnect() { |
| 441 | if (!this.socket) return; |
| 442 | this._manualDisconnect = true; |
| 443 | this.socket.disconnect(); |
| 444 | this.connected = false; |
| 445 | } |
| 446 | |
| 447 | isConnected() { |
| 448 | return this.connected; |
| 449 | } |
| 450 | |
| 451 | async emit(eventType, data, options = {}) { |
| 452 | const correlationId = |
| 453 | normalizeCorrelationId(options?.correlationId) || createCorrelationId("emit"); |
| 454 | const payload = this.buildPayload(data); |
| 455 | payload.correlationId = correlationId; |
| 456 | |
| 457 | this.debugLog("emit", { |
| 458 | eventType, |
| 459 | correlationId, |
| 460 | }); |
| 461 | this.ensurePayloadSize(payload); |
| 462 | await this.connect(); |
| 463 | if (!this.isConnected()) { |
| 464 | throw new Error("Not connected"); |
| 465 | } |
| 466 | this.socket.emit(eventType, payload); |
| 467 | } |
| 468 | |
| 469 | async request(eventType, data, options = {}) { |
| 470 | const correlationId = |
| 471 | normalizeCorrelationId(options?.correlationId) || |
| 472 | createCorrelationId("request"); |
| 473 | const payload = this.buildPayload(data); |
| 474 | payload.correlationId = correlationId; |
| 475 | |
| 476 | const timeoutMs = Number(options.timeoutMs ?? DEFAULT_TIMEOUT_MS); |
| 477 | this.debugLog("request", { eventType, correlationId, timeoutMs }); |
| 478 | if (!Number.isFinite(timeoutMs) || timeoutMs < 0) { |
| 479 | throw new Error("timeoutMs must be a non-negative number"); |
| 480 | } |
| 481 | this.ensurePayloadSize(payload); |
| 482 | await this.connect(); |
| 483 | if (!this.isConnected()) { |
| 484 | throw new Error("Not connected"); |
| 485 | } |
| 486 | |
| 487 | return new Promise((resolve, reject) => { |
| 488 | if (timeoutMs > 0) { |
| 489 | this.socket |
| 490 | .timeout(timeoutMs) |
| 491 | .emit(eventType, payload, (err, response) => { |
| 492 | if (err) { |
| 493 | reject(new Error("Request timeout")); |
| 494 | return; |
| 495 | } |
| 496 | resolve(this.normalizeRequestResponse(response)); |
| 497 | }); |
| 498 | return; |
| 499 | } |
| 500 | |
| 501 | this.socket.emit(eventType, payload, (response) => { |
| 502 | resolve(this.normalizeRequestResponse(response)); |
| 503 | }); |
| 504 | }); |
| 505 | } |
| 506 | |
| 507 | normalizeRequestResponse(response) { |
| 508 | if (!response || typeof response !== "object") { |
| 509 | return { correlationId: null, results: [] }; |
| 510 | } |
| 511 | const correlationId = |
| 512 | typeof response.correlationId === "string" && response.correlationId.trim().length > 0 |
| 513 | ? response.correlationId.trim() |
| 514 | : null; |
| 515 | const results = Array.isArray(response.results) ? response.results : []; |
| 516 | return { correlationId, results }; |
| 517 | } |
| 518 | |
| 519 | async on(eventType, callback) { |
| 520 | if (typeof callback !== "function") { |
| 521 | throw new Error("Callback must be a function"); |
| 522 | } |
| 523 | |
| 524 | await this.connect(); |
| 525 | |
| 526 | if (!this.subscriptions.has(eventType)) { |
| 527 | const isWildcard = hasWildcardPattern(eventType); |
| 528 | const eventPattern = isWildcard ? compileEventPattern(eventType) : null; |
| 529 | const handler = (...args) => { |
| 530 | const entry = this.subscriptions.get(eventType); |
| 531 | if (!entry) return; |
| 532 | const currentIsWildcard = Boolean(entry.eventPattern); |
| 533 | const payload = isWildcard ? args[1] : args[0]; |
| 534 | const incomingEventType = isWildcard ? args[0] : eventType; |
| 535 | if (currentIsWildcard) { |
| 536 | if (typeof incomingEventType !== "string") return; |
| 537 | if (!entry.eventPattern.test(incomingEventType)) return; |
| 538 | } |
| 539 | let envelope; |
| 540 | try { |
| 541 | envelope = validateServerEnvelope(payload); |
| 542 | } catch (error) { |
| 543 | console.error("WebSocket envelope validation failed:", error); |
| 544 | this.invokeErrorCallbacks(error); |
| 545 | return; |
| 546 | } |
| 547 | |
| 548 | entry.callbacks.forEach((cb) => { |
| 549 | try { |
| 550 | if (currentIsWildcard) { |
| 551 | cb(incomingEventType, envelope); |
| 552 | return; |
| 553 | } |
| 554 | cb(envelope); |
| 555 | } catch (error) { |
| 556 | console.error("WebSocket callback error:", error); |
| 557 | } |
| 558 | }); |
| 559 | }; |
| 560 | |
| 561 | this.subscriptions.set(eventType, { |
| 562 | eventPattern, |
| 563 | handler, |
| 564 | callbacks: new Set(), |
| 565 | }); |
| 566 | |
| 567 | if (isWildcard) { |
| 568 | this.socket.onAny(handler); |
| 569 | } else { |
| 570 | this.socket.on(eventType, handler); |
| 571 | } |
| 572 | } |
| 573 | |
| 574 | const entry = this.subscriptions.get(eventType); |
| 575 | entry.callbacks.add(callback); |
| 576 | } |
| 577 | |
| 578 | off(eventType, callback) { |
| 579 | const entry = this.subscriptions.get(eventType); |
| 580 | if (!entry) return; |
| 581 | |
| 582 | if (callback) { |
| 583 | entry.callbacks.delete(callback); |
| 584 | } else { |
| 585 | entry.callbacks.clear(); |
| 586 | } |
| 587 | |
| 588 | if (entry.callbacks.size === 0) { |
| 589 | if (this.socket) { |
| 590 | if (entry.eventPattern) { |
| 591 | this.socket.offAny(entry.handler); |
| 592 | } else { |
| 593 | this.socket.off(eventType, entry.handler); |
| 594 | } |
| 595 | } |
| 596 | this.subscriptions.delete(eventType); |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | onConnect(callback) { |
| 601 | if (typeof callback === "function") { |
| 602 | this.connectCallbacks.add(callback); |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | onDisconnect(callback) { |
| 607 | if (typeof callback === "function") { |
| 608 | this.disconnectCallbacks.add(callback); |
| 609 | } |
| 610 | } |
| 611 | |
| 612 | onError(callback) { |
| 613 | if (typeof callback === "function") { |
| 614 | this.errorCallbacks.add(callback); |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | initializeSocket() { |
| 619 | this.socket = io(this.namespace, { |
| 620 | autoConnect: false, |
| 621 | reconnection: true, |
| 622 | transports: ["websocket", "polling"], |
| 623 | withCredentials: true, |
| 624 | auth: (cb) => { |
| 625 | const handlers = [...this._handlers]; |
| 626 | getCsrfToken() |
| 627 | .then((token) => cb({ csrf_token: token, handlers })) |
| 628 | .catch((error) => { |
| 629 | console.error("[websocket] failed to fetch CSRF token for connect", error); |
| 630 | cb({ handlers }); |
| 631 | }); |
| 632 | }, |
| 633 | }); |
| 634 | |
| 635 | this.socket.on("connect", () => { |
| 636 | this.connected = true; |
| 637 | this._csrfInvalidatedForConnectError = false; |
| 638 | this._connectErrorRetryAttempt = 0; |
| 639 | this._clearConnectErrorRetryTimer(); |
| 640 | |
| 641 | const runtimeId = getRuntimeId(); |
| 642 | const runtimeChanged = Boolean( |
| 643 | this._lastRuntimeId && |
| 644 | runtimeId && |
| 645 | this._lastRuntimeId !== runtimeId |
| 646 | ); |
| 647 | const firstConnect = !this._hasConnectedOnce; |
| 648 | this._hasConnectedOnce = true; |
| 649 | this._lastRuntimeId = runtimeId; |
| 650 | |
| 651 | this.debugLog("socket connected", { |
| 652 | sid: this.socket.id, |
| 653 | runtimeId, |
| 654 | runtimeChanged, |
| 655 | firstConnect, |
| 656 | }); |
| 657 | this.connectCallbacks.forEach((cb) => { |
| 658 | try { |
| 659 | cb({ runtimeId, runtimeChanged, firstConnect }); |
| 660 | } catch (error) { |
| 661 | console.error("WebSocket onConnect callback error:", error); |
| 662 | } |
| 663 | }); |
| 664 | }); |
| 665 | |
| 666 | this.socket.on("disconnect", (reason) => { |
| 667 | this.connected = false; |
| 668 | this.debugLog("socket disconnected", { reason }); |
| 669 | this.disconnectCallbacks.forEach((cb) => { |
| 670 | try { |
| 671 | cb(reason); |
| 672 | } catch (error) { |
| 673 | console.error("WebSocket onDisconnect callback error:", error); |
| 674 | } |
| 675 | }); |
| 676 | }); |
| 677 | |
| 678 | this.socket.on("connect_error", (error) => { |
| 679 | this.debugLog("socket connect_error", error); |
| 680 | this.invokeErrorCallbacks(error); |
| 681 | if (!this._csrfInvalidatedForConnectError) { |
| 682 | this._csrfInvalidatedForConnectError = true; |
| 683 | invalidateCsrfToken(); |
| 684 | } |
| 685 | this._scheduleConnectErrorRetry("connect_error"); |
| 686 | }); |
| 687 | |
| 688 | this.socket.on("error", (error) => { |
| 689 | this.debugLog("socket error", error); |
| 690 | this.invokeErrorCallbacks(error); |
| 691 | }); |
| 692 | } |
| 693 | |
| 694 | invokeErrorCallbacks(error) { |
| 695 | this.errorCallbacks.forEach((cb) => { |
| 696 | try { |
| 697 | cb(error); |
| 698 | } catch (err) { |
| 699 | console.error("WebSocket onError callback error:", err); |
| 700 | } |
| 701 | }); |
| 702 | } |
| 703 | |
| 704 | ensurePayloadSize(data) { |
| 705 | const size = this.calculatePayloadSize(data); |
| 706 | if (size > MAX_PAYLOAD_BYTES) { |
| 707 | throw new Error("Payload too large"); |
| 708 | } |
| 709 | } |
| 710 | |
| 711 | calculatePayloadSize(data) { |
| 712 | try { |
| 713 | return new TextEncoder().encode(JSON.stringify(data ?? null)).length; |
| 714 | } catch (_error) { |
| 715 | // Fallback: rough estimate if stringify fails |
| 716 | const stringified = String(data); |
| 717 | return stringified.length * 2; |
| 718 | } |
| 719 | } |
| 720 | } |
| 721 | |
| 722 | const _namespacedClients = new Map(); |
| 723 | |
| 724 | /** |
| 725 | * Create a new Socket.IO client bound to a specific namespace. |
| 726 | * |
| 727 | * @param {string} namespace |
| 728 | * @returns {WebSocketClient} |
| 729 | */ |
| 730 | export function createNamespacedClient(namespace) { |
| 731 | return new WebSocketClient(namespace); |
| 732 | } |
| 733 | |
| 734 | /** |
| 735 | * Return a cached Socket.IO client for the given namespace (one per browser tab/window). |
| 736 | * |
| 737 | * @param {string} namespace |
| 738 | * @returns {WebSocketClient} |
| 739 | */ |
| 740 | export function getNamespacedClient(namespace) { |
| 741 | const key = normalizeNamespace(namespace); |
| 742 | const existing = _namespacedClients.get(key); |
| 743 | if (existing) return existing; |
| 744 | const client = new WebSocketClient(key); |
| 745 | _namespacedClients.set(key, client); |
| 746 | return client; |
| 747 | } |