@limrun/api - npm Package Compare versions

Comparing version 0.13.1 to 0.13.2

CHANGELOG.md

 # Changelog
 
+## 0.13.2 (2025-11-11)
+
+Full Changelog: [v0.13.1...v0.13.2](https://github.com/limrun-inc/typescript-sdk/compare/v0.13.1...v0.13.2)
+
 ## 0.13.1 (2025-11-08)
@@ -4,0 +8,0 @@

index.d.mts

@@ -6,4 +6,4 @@ export { Limrun as default } from "./client.mjs";
 export { PagePromise } from "./core/pagination.mjs";
-export { createInstanceClient } from "./instance-client.mjs";
+export * from "./instance-client.mjs";
 export { LimrunError, APIError, APIConnectionError, APIConnectionTimeoutError, APIUserAbortError, NotFoundError, ConflictError, RateLimitError, BadRequestError, AuthenticationError, InternalServerError, PermissionDeniedError, UnprocessableEntityError, } from "./core/error.mjs";
 //# sourceMappingURL=index.d.mts.map

index.d.mts.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"index.d.mts","sourceRoot":"","sources":["src/index.ts"],"names":[],"mappings":"OAEO,EAAE,MAAM,IAAI,OAAO,EAAE;OAErB,EAAE,KAAK,UAAU,EAAE,MAAM,EAAE;OAC3B,EAAE,UAAU,EAAE;OACd,EAAE,MAAM,EAAE,KAAK,aAAa,EAAE;OAC9B,EAAE,WAAW,EAAE;OACf,EAAE,oBAAoB,EAAE;OACxB,EACL,WAAW,EACX,QAAQ,EACR,kBAAkB,EAClB,yBAAyB,EACzB,iBAAiB,EACjB,aAAa,EACb,aAAa,EACb,cAAc,EACd,eAAe,EACf,mBAAmB,EACnB,mBAAmB,EACnB,qBAAqB,EACrB,wBAAwB,GACzB"}
+{"version":3,"file":"index.d.mts","sourceRoot":"","sources":["src/index.ts"],"names":[],"mappings":"OAEO,EAAE,MAAM,IAAI,OAAO,EAAE;OAErB,EAAE,KAAK,UAAU,EAAE,MAAM,EAAE;OAC3B,EAAE,UAAU,EAAE;OACd,EAAE,MAAM,EAAE,KAAK,aAAa,EAAE;OAC9B,EAAE,WAAW,EAAE;;OAEf,EACL,WAAW,EACX,QAAQ,EACR,kBAAkB,EAClB,yBAAyB,EACzB,iBAAiB,EACjB,aAAa,EACb,aAAa,EACb,cAAc,EACd,eAAe,EACf,mBAAmB,EACnB,mBAAmB,EACnB,qBAAqB,EACrB,wBAAwB,GACzB"}

index.d.ts

@@ -6,4 +6,4 @@ export { Limrun as default } from "./client.js";
 export { PagePromise } from "./core/pagination.js";
-export { createInstanceClient } from "./instance-client.js";
+export * from "./instance-client.js";
 export { LimrunError, APIError, APIConnectionError, APIConnectionTimeoutError, APIUserAbortError, NotFoundError, ConflictError, RateLimitError, BadRequestError, AuthenticationError, InternalServerError, PermissionDeniedError, UnprocessableEntityError, } from "./core/error.js";
 //# sourceMappingURL=index.d.ts.map

index.d.ts.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["src/index.ts"],"names":[],"mappings":"OAEO,EAAE,MAAM,IAAI,OAAO,EAAE;OAErB,EAAE,KAAK,UAAU,EAAE,MAAM,EAAE;OAC3B,EAAE,UAAU,EAAE;OACd,EAAE,MAAM,EAAE,KAAK,aAAa,EAAE;OAC9B,EAAE,WAAW,EAAE;OACf,EAAE,oBAAoB,EAAE;OACxB,EACL,WAAW,EACX,QAAQ,EACR,kBAAkB,EAClB,yBAAyB,EACzB,iBAAiB,EACjB,aAAa,EACb,aAAa,EACb,cAAc,EACd,eAAe,EACf,mBAAmB,EACnB,mBAAmB,EACnB,qBAAqB,EACrB,wBAAwB,GACzB"}
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["src/index.ts"],"names":[],"mappings":"OAEO,EAAE,MAAM,IAAI,OAAO,EAAE;OAErB,EAAE,KAAK,UAAU,EAAE,MAAM,EAAE;OAC3B,EAAE,UAAU,EAAE;OACd,EAAE,MAAM,EAAE,KAAK,aAAa,EAAE;OAC9B,EAAE,WAAW,EAAE;;OAEf,EACL,WAAW,EACX,QAAQ,EACR,kBAAkB,EAClB,yBAAyB,EACzB,iBAAiB,EACjB,aAAa,EACb,aAAa,EACb,cAAc,EACd,eAAe,EACf,mBAAmB,EACnB,mBAAmB,EACnB,qBAAqB,EACrB,wBAAwB,GACzB"}

index.js

@@ -7,3 +7,4 @@ "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.UnprocessableEntityError = exports.PermissionDeniedError = exports.InternalServerError = exports.AuthenticationError = exports.BadRequestError = exports.RateLimitError = exports.ConflictError = exports.NotFoundError = exports.APIUserAbortError = exports.APIConnectionTimeoutError = exports.APIConnectionError = exports.APIError = exports.LimrunError = exports.createInstanceClient = exports.PagePromise = exports.Limrun = exports.APIPromise = exports.toFile = exports.default = void 0;
+exports.UnprocessableEntityError = exports.PermissionDeniedError = exports.InternalServerError = exports.AuthenticationError = exports.BadRequestError = exports.RateLimitError = exports.ConflictError = exports.NotFoundError = exports.APIUserAbortError = exports.APIConnectionTimeoutError = exports.APIConnectionError = exports.APIError = exports.LimrunError = exports.PagePromise = exports.Limrun = exports.APIPromise = exports.toFile = exports.default = void 0;
+const tslib_1 = require("./internal/tslib.js");
 var client_1 = require("./client.js");
@@ -19,4 +20,3 @@ Object.defineProperty(exports, "default", { enumerable: true, get: function () { return client_1.Limrun; } });
 Object.defineProperty(exports, "PagePromise", { enumerable: true, get: function () { return pagination_1.PagePromise; } });
-var instance_client_1 = require("./instance-client.js");
-Object.defineProperty(exports, "createInstanceClient", { enumerable: true, get: function () { return instance_client_1.createInstanceClient; } });
+tslib_1.__exportStar(require("./instance-client.js"), exports);
 var error_1 = require("./core/error.js");
@@ -23,0 +23,0 @@ Object.defineProperty(exports, "LimrunError", { enumerable: true, get: function () { return error_1.LimrunError; } });

index.js.map

@@ -1,1 +0,1 @@
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+{"version":3,"file":"index.js","sourceRoot":"","sources":["src/index.ts"],"names":[],"mappings":";AAAA,sFAAsF;;;;AAEtF,sCAA6C;AAApC,iGAAA,MAAM,OAAW;AAE1B,6CAAyD;AAA/B,iGAAA,MAAM,OAAA;AAChC,qDAAgD;AAAvC,yGAAA,UAAU,OAAA;AACnB,sCAAsD;AAA7C,gGAAA,MAAM,OAAA;AACf,mDAAgD;AAAvC,yGAAA,WAAW,OAAA;AACpB,+DAAkC;AAClC,yCAcsB;AAbpB,oGAAA,WAAW,OAAA;AACX,iGAAA,QAAQ,OAAA;AACR,2GAAA,kBAAkB,OAAA;AAClB,kHAAA,yBAAyB,OAAA;AACzB,0GAAA,iBAAiB,OAAA;AACjB,sGAAA,aAAa,OAAA;AACb,sGAAA,aAAa,OAAA;AACb,uGAAA,cAAc,OAAA;AACd,wGAAA,eAAe,OAAA;AACf,4GAAA,mBAAmB,OAAA;AACnB,4GAAA,mBAAmB,OAAA;AACnB,8GAAA,qBAAqB,OAAA;AACrB,iHAAA,wBAAwB,OAAA"}

index.mjs

@@ -7,4 +7,4 @@ // File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 export { PagePromise } from "./core/pagination.mjs";
-export { createInstanceClient } from "./instance-client.mjs";
+export * from "./instance-client.mjs";
 export { LimrunError, APIError, APIConnectionError, APIConnectionTimeoutError, APIUserAbortError, NotFoundError, ConflictError, RateLimitError, BadRequestError, AuthenticationError, InternalServerError, PermissionDeniedError, UnprocessableEntityError, } from "./core/error.mjs";
 //# sourceMappingURL=index.mjs.map

index.mjs.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"index.mjs","sourceRoot":"","sources":["src/index.ts"],"names":[],"mappings":"AAAA,sFAAsF;OAE/E,EAAE,MAAM,IAAI,OAAO,EAAE;OAErB,EAAmB,MAAM,EAAE;OAC3B,EAAE,UAAU,EAAE;OACd,EAAE,MAAM,EAAsB;OAC9B,EAAE,WAAW,EAAE;OACf,EAAE,oBAAoB,EAAE;OACxB,EACL,WAAW,EACX,QAAQ,EACR,kBAAkB,EAClB,yBAAyB,EACzB,iBAAiB,EACjB,aAAa,EACb,aAAa,EACb,cAAc,EACd,eAAe,EACf,mBAAmB,EACnB,mBAAmB,EACnB,qBAAqB,EACrB,wBAAwB,GACzB"}
+{"version":3,"file":"index.mjs","sourceRoot":"","sources":["src/index.ts"],"names":[],"mappings":"AAAA,sFAAsF;OAE/E,EAAE,MAAM,IAAI,OAAO,EAAE;OAErB,EAAmB,MAAM,EAAE;OAC3B,EAAE,UAAU,EAAE;OACd,EAAE,MAAM,EAAsB;OAC9B,EAAE,WAAW,EAAE;;OAEf,EACL,WAAW,EACX,QAAQ,EACR,kBAAkB,EAClB,yBAAyB,EACzB,iBAAiB,EACjB,aAAa,EACb,aAAa,EACb,cAAc,EACd,eAAe,EACf,mBAAmB,EACnB,mBAAmB,EACnB,qBAAqB,EACrB,wBAAwB,GACzB"}

instance-client.d.mts

 import type { Tunnel } from "./tunnel.mjs";
 /**
+ * Connection state of the instance client
+ */
+export type ConnectionState = 'connecting' | 'connected' | 'disconnected' | 'reconnecting';
+/**
+ * Callback function for connection state changes
+ */
+export type ConnectionStateCallback = (state: ConnectionState) => void;
+/**
  * A client for interacting with a Limbar instance
@@ -26,2 +34,11 @@ */
     sendAsset: (url: string) => Promise<void>;
+    /**
+     * Get current connection state
+     */
+    getConnectionState: () => ConnectionState;
+    /**
+     * Register callback for connection state changes
+     * @returns A function to unregister the callback
+     */
+    onConnectionStateChange: (callback: ConnectionStateCallback) => () => void;
 };
@@ -58,2 +75,17 @@ /**
     logLevel?: LogLevel;
+    /**
+     * Maximum number of reconnection attempts
+     * @default 6
+     */
+    maxReconnectAttempts?: number;
+    /**
+     * Initial reconnection delay in milliseconds
+     * @default 1000
+     */
+    reconnectDelay?: number;
+    /**
+     * Maximum reconnection delay in milliseconds
+     * @default 30000
+     */
+    maxReconnectDelay?: number;
 };
@@ -60,0 +92,0 @@ type ScreenshotData = {

instance-client.d.mts.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"instance-client.d.mts","sourceRoot":"","sources":["src/instance-client.ts"],"names":[],"mappings":"OAIO,KAAK,EAAE,MAAM,EAAE;AAEtB;;GAEG;AACH,MAAM,MAAM,cAAc,GAAG;IAC3B;;;OAGG;IACH,UAAU,EAAE,MAAM,OAAO,CAAC,cAAc,CAAC,CAAC;IAC1C;;OAEG;IACH,UAAU,EAAE,MAAM,IAAI,CAAC;IAEvB;;;OAGG;IACH,cAAc,EAAE,MAAM,OAAO,CAAC,MAAM,CAAC,CAAC;IACtC;;;;OAIG;IACH,SAAS,EAAE,CAAC,GAAG,EAAE,MAAM,KAAK,OAAO,CAAC,IAAI,CAAC,CAAC;CAC3C,CAAC;AAEF;;GAEG;AACH,MAAM,MAAM,QAAQ,GAAG,MAAM,GAAG,OAAO,GAAG,MAAM,GAAG,MAAM,GAAG,OAAO,CAAC;AAEpE;;GAEG;AACH,MAAM,MAAM,qBAAqB,GAAG;IAClC;;OAEG;IACH,MAAM,EAAE,MAAM,CAAC;IACf;;OAEG;IACH,WAAW,EAAE,MAAM,CAAC;IACpB;;OAEG;IACH,KAAK,EAAE,MAAM,CAAC;IACd;;;OAGG;IACH,OAAO,CAAC,EAAE,MAAM,CAAC;IACjB;;;OAGG;IACH,QAAQ,CAAC,EAAE,QAAQ,CAAC;CACrB,CAAC;AAaF,KAAK,cAAc,GAAG;IACpB,OAAO,EAAE,MAAM,CAAC;CACjB,CAAC;AA0BF;;;;GAIG;AACH,wBAAsB,oBAAoB,CAAC,OAAO,EAAE,qBAAqB,GAAG,OAAO,CAAC,cAAc,CAAC,CA0OlG"}
+{"version":3,"file":"instance-client.d.mts","sourceRoot":"","sources":["src/instance-client.ts"],"names":[],"mappings":"OAIO,KAAK,EAAE,MAAM,EAAE;AAEtB;;GAEG;AACH,MAAM,MAAM,eAAe,GAAG,YAAY,GAAG,WAAW,GAAG,cAAc,GAAG,cAAc,CAAC;AAE3F;;GAEG;AACH,MAAM,MAAM,uBAAuB,GAAG,CAAC,KAAK,EAAE,eAAe,KAAK,IAAI,CAAC;AAEvE;;GAEG;AACH,MAAM,MAAM,cAAc,GAAG;IAC3B;;;OAGG;IACH,UAAU,EAAE,MAAM,OAAO,CAAC,cAAc,CAAC,CAAC;IAC1C;;OAEG;IACH,UAAU,EAAE,MAAM,IAAI,CAAC;IAEvB;;;OAGG;IACH,cAAc,EAAE,MAAM,OAAO,CAAC,MAAM,CAAC,CAAC;IACtC;;;;OAIG;IACH,SAAS,EAAE,CAAC,GAAG,EAAE,MAAM,KAAK,OAAO,CAAC,IAAI,CAAC,CAAC;IAE1C;;OAEG;IACH,kBAAkB,EAAE,MAAM,eAAe,CAAC;IAE1C;;;OAGG;IACH,uBAAuB,EAAE,CAAC,QAAQ,EAAE,uBAAuB,KAAK,MAAM,IAAI,CAAC;CAC5E,CAAC;AAEF;;GAEG;AACH,MAAM,MAAM,QAAQ,GAAG,MAAM,GAAG,OAAO,GAAG,MAAM,GAAG,MAAM,GAAG,OAAO,CAAC;AAEpE;;GAEG;AACH,MAAM,MAAM,qBAAqB,GAAG;IAClC;;OAEG;IACH,MAAM,EAAE,MAAM,CAAC;IACf;;OAEG;IACH,WAAW,EAAE,MAAM,CAAC;IACpB;;OAEG;IACH,KAAK,EAAE,MAAM,CAAC;IACd;;;OAGG;IACH,OAAO,CAAC,EAAE,MAAM,CAAC;IACjB;;;OAGG;IACH,QAAQ,CAAC,EAAE,QAAQ,CAAC;IACpB;;;OAGG;IACH,oBAAoB,CAAC,EAAE,MAAM,CAAC;IAC9B;;;OAGG;IACH,cAAc,CAAC,EAAE,MAAM,CAAC;IACxB;;;OAGG;IACH,iBAAiB,CAAC,EAAE,MAAM,CAAC;CAC5B,CAAC;AAaF,KAAK,cAAc,GAAG;IACpB,OAAO,EAAE,MAAM,CAAC;CACjB,CAAC;AA0BF;;;;GAIG;AACH,wBAAsB,oBAAoB,CAAC,OAAO,EAAE,qBAAqB,GAAG,OAAO,CAAC,cAAc,CAAC,CA8WlG"}

instance-client.d.ts

 import type { Tunnel } from "./tunnel.js";
 /**
+ * Connection state of the instance client
+ */
+export type ConnectionState = 'connecting' | 'connected' | 'disconnected' | 'reconnecting';
+/**
+ * Callback function for connection state changes
+ */
+export type ConnectionStateCallback = (state: ConnectionState) => void;
+/**
  * A client for interacting with a Limbar instance
@@ -26,2 +34,11 @@ */
     sendAsset: (url: string) => Promise<void>;
+    /**
+     * Get current connection state
+     */
+    getConnectionState: () => ConnectionState;
+    /**
+     * Register callback for connection state changes
+     * @returns A function to unregister the callback
+     */
+    onConnectionStateChange: (callback: ConnectionStateCallback) => () => void;
 };
@@ -58,2 +75,17 @@ /**
     logLevel?: LogLevel;
+    /**
+     * Maximum number of reconnection attempts
+     * @default 6
+     */
+    maxReconnectAttempts?: number;
+    /**
+     * Initial reconnection delay in milliseconds
+     * @default 1000
+     */
+    reconnectDelay?: number;
+    /**
+     * Maximum reconnection delay in milliseconds
+     * @default 30000
+     */
+    maxReconnectDelay?: number;
 };
@@ -60,0 +92,0 @@ type ScreenshotData = {

instance-client.d.ts.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"instance-client.d.ts","sourceRoot":"","sources":["src/instance-client.ts"],"names":[],"mappings":"OAIO,KAAK,EAAE,MAAM,EAAE;AAEtB;;GAEG;AACH,MAAM,MAAM,cAAc,GAAG;IAC3B;;;OAGG;IACH,UAAU,EAAE,MAAM,OAAO,CAAC,cAAc,CAAC,CAAC;IAC1C;;OAEG;IACH,UAAU,EAAE,MAAM,IAAI,CAAC;IAEvB;;;OAGG;IACH,cAAc,EAAE,MAAM,OAAO,CAAC,MAAM,CAAC,CAAC;IACtC;;;;OAIG;IACH,SAAS,EAAE,CAAC,GAAG,EAAE,MAAM,KAAK,OAAO,CAAC,IAAI,CAAC,CAAC;CAC3C,CAAC;AAEF;;GAEG;AACH,MAAM,MAAM,QAAQ,GAAG,MAAM,GAAG,OAAO,GAAG,MAAM,GAAG,MAAM,GAAG,OAAO,CAAC;AAEpE;;GAEG;AACH,MAAM,MAAM,qBAAqB,GAAG;IAClC;;OAEG;IACH,MAAM,EAAE,MAAM,CAAC;IACf;;OAEG;IACH,WAAW,EAAE,MAAM,CAAC;IACpB;;OAEG;IACH,KAAK,EAAE,MAAM,CAAC;IACd;;;OAGG;IACH,OAAO,CAAC,EAAE,MAAM,CAAC;IACjB;;;OAGG;IACH,QAAQ,CAAC,EAAE,QAAQ,CAAC;CACrB,CAAC;AAaF,KAAK,cAAc,GAAG;IACpB,OAAO,EAAE,MAAM,CAAC;CACjB,CAAC;AA0BF;;;;GAIG;AACH,wBAAsB,oBAAoB,CAAC,OAAO,EAAE,qBAAqB,GAAG,OAAO,CAAC,cAAc,CAAC,CA0OlG"}
+{"version":3,"file":"instance-client.d.ts","sourceRoot":"","sources":["src/instance-client.ts"],"names":[],"mappings":"OAIO,KAAK,EAAE,MAAM,EAAE;AAEtB;;GAEG;AACH,MAAM,MAAM,eAAe,GAAG,YAAY,GAAG,WAAW,GAAG,cAAc,GAAG,cAAc,CAAC;AAE3F;;GAEG;AACH,MAAM,MAAM,uBAAuB,GAAG,CAAC,KAAK,EAAE,eAAe,KAAK,IAAI,CAAC;AAEvE;;GAEG;AACH,MAAM,MAAM,cAAc,GAAG;IAC3B;;;OAGG;IACH,UAAU,EAAE,MAAM,OAAO,CAAC,cAAc,CAAC,CAAC;IAC1C;;OAEG;IACH,UAAU,EAAE,MAAM,IAAI,CAAC;IAEvB;;;OAGG;IACH,cAAc,EAAE,MAAM,OAAO,CAAC,MAAM,CAAC,CAAC;IACtC;;;;OAIG;IACH,SAAS,EAAE,CAAC,GAAG,EAAE,MAAM,KAAK,OAAO,CAAC,IAAI,CAAC,CAAC;IAE1C;;OAEG;IACH,kBAAkB,EAAE,MAAM,eAAe,CAAC;IAE1C;;;OAGG;IACH,uBAAuB,EAAE,CAAC,QAAQ,EAAE,uBAAuB,KAAK,MAAM,IAAI,CAAC;CAC5E,CAAC;AAEF;;GAEG;AACH,MAAM,MAAM,QAAQ,GAAG,MAAM,GAAG,OAAO,GAAG,MAAM,GAAG,MAAM,GAAG,OAAO,CAAC;AAEpE;;GAEG;AACH,MAAM,MAAM,qBAAqB,GAAG;IAClC;;OAEG;IACH,MAAM,EAAE,MAAM,CAAC;IACf;;OAEG;IACH,WAAW,EAAE,MAAM,CAAC;IACpB;;OAEG;IACH,KAAK,EAAE,MAAM,CAAC;IACd;;;OAGG;IACH,OAAO,CAAC,EAAE,MAAM,CAAC;IACjB;;;OAGG;IACH,QAAQ,CAAC,EAAE,QAAQ,CAAC;IACpB;;;OAGG;IACH,oBAAoB,CAAC,EAAE,MAAM,CAAC;IAC9B;;;OAGG;IACH,cAAc,CAAC,EAAE,MAAM,CAAC;IACxB;;;OAGG;IACH,iBAAiB,CAAC,EAAE,MAAM,CAAC;CAC5B,CAAC;AAaF,KAAK,cAAc,GAAG;IACpB,OAAO,EAAE,MAAM,CAAC;CACjB,CAAC;AA0BF;;;;GAIG;AACH,wBAAsB,oBAAoB,CAAC,OAAO,EAAE,qBAAqB,GAAG,OAAO,CAAC,cAAc,CAAC,CA8WlG"}

instance-client.js

@@ -15,5 +15,13 @@ "use strict";
     const logLevel = options.logLevel ?? 'info';
+    const maxReconnectAttempts = options.maxReconnectAttempts ?? 6;
+    const reconnectDelay = options.reconnectDelay ?? 1000;
+    const maxReconnectDelay = options.maxReconnectDelay ?? 30000;
     let ws = undefined;
+    let connectionState = 'connecting';
+    let reconnectAttempts = 0;
+    let reconnectTimeout;
+    let intentionalDisconnect = false;
     const screenshotRequests = new Map();
     const assetRequests = new Map();
+    const stateChangeCallbacks = new Set();
     // Logger functions
@@ -38,84 +46,175 @@ const logger = {
     };
+    const updateConnectionState = (newState) => {
+        if (connectionState !== newState) {
+            connectionState = newState;
+            logger.debug(`Connection state changed to: ${newState}`);
+            stateChangeCallbacks.forEach((callback) => {
+                try {
+                    callback(newState);
+                }
+                catch (err) {
+                    logger.error('Error in connection state callback:', err);
+                }
+            });
+        }
+    };
+    const failPendingRequests = (reason) => {
+        screenshotRequests.forEach((request) => request.rejecter(new Error(reason)));
+        screenshotRequests.clear();
+        assetRequests.forEach((request) => request.rejecter(new Error(reason)));
+        assetRequests.clear();
+    };
+    const cleanup = () => {
+        if (reconnectTimeout) {
+            clearTimeout(reconnectTimeout);
+            reconnectTimeout = undefined;
+        }
+        if (pingInterval) {
+            clearInterval(pingInterval);
+            pingInterval = undefined;
+        }
+        if (ws) {
+            ws.removeAllListeners();
+            if (ws.readyState === ws_1.WebSocket.OPEN || ws.readyState === ws_1.WebSocket.CONNECTING) {
+                ws.close();
+            }
+            ws = undefined;
+        }
+    };
+    let pingInterval;
     return new Promise((resolveConnection, rejectConnection) => {
-        logger.debug(`Attempting to connect to WebSocket server at ${serverAddress}...`);
-        ws = new ws_1.WebSocket(serverAddress);
-        ws.on('message', (data) => {
-            let message;
-            try {
-                message = JSON.parse(data.toString());
+        let hasResolved = false;
+        // Reconnection logic with exponential backoff
+        const scheduleReconnect = () => {
+            if (intentionalDisconnect) {
+                logger.debug('Skipping reconnection (intentional disconnect)');
+                return;
             }
-            catch (e) {
-                logger.error({ data, error: e }, 'Failed to parse JSON message');
+            if (reconnectAttempts >= maxReconnectAttempts) {
+                logger.error(`Max reconnection attempts (${maxReconnectAttempts}) reached. Giving up.`);
+                updateConnectionState('disconnected');
                 return;
             }
-            switch (message.type) {
-                case 'screenshot': {
-                    if (!('dataUri' in message) || typeof message.dataUri !== 'string' || !('id' in message)) {
-                        logger.warn('Received invalid screenshot message:', message);
+            const currentDelay = Math.min(reconnectDelay * Math.pow(2, reconnectAttempts), maxReconnectDelay);
+            reconnectAttempts++;
+            logger.debug(`Scheduling reconnection attempt ${reconnectAttempts} in ${currentDelay}ms...`);
+            updateConnectionState('reconnecting');
+            reconnectTimeout = setTimeout(() => {
+                logger.debug(`Attempting to reconnect (attempt ${reconnectAttempts})...`);
+                setupWebSocket();
+            }, currentDelay);
+        };
+        const setupWebSocket = () => {
+            cleanup();
+            updateConnectionState('connecting');
+            ws = new ws_1.WebSocket(serverAddress);
+            ws.on('message', (data) => {
+                let message;
+                try {
+                    message = JSON.parse(data.toString());
+                }
+                catch (e) {
+                    logger.error({ data, error: e }, 'Failed to parse JSON message');
+                    return;
+                }
+                switch (message.type) {
+                    case 'screenshot': {
+                        if (!('dataUri' in message) || typeof message.dataUri !== 'string' || !('id' in message)) {
+                            logger.warn('Received invalid screenshot message:', message);
+                            break;
+                        }
+                        const screenshotMessage = message;
+                        const request = screenshotRequests.get(screenshotMessage.id);
+                        if (!request) {
+                            logger.warn(`Received screenshot data for unknown or already handled session: ${screenshotMessage.id}`);
+                            break;
+                        }
+                        logger.debug(`Received screenshot data URI for session ${screenshotMessage.id}.`);
+                        request.resolver({ dataUri: screenshotMessage.dataUri });
+                        screenshotRequests.delete(screenshotMessage.id);
                         break;
                     }
-                    const screenshotMessage = message;
-                    const request = screenshotRequests.get(screenshotMessage.id);
-                    if (!request) {
-                        logger.warn(`Received screenshot data for unknown or already handled session: ${screenshotMessage.id}`);
+                    case 'screenshotError': {
+                        if (!('message' in message) || !('id' in message)) {
+                            logger.warn('Received invalid screenshot error message:', message);
+                            break;
+                        }
+                        const errorMessage = message;
+                        const request = screenshotRequests.get(errorMessage.id);
+                        if (!request) {
+                            logger.warn(`Received screenshot error for unknown or already handled session: ${errorMessage.id}`);
+                            break;
+                        }
+                        logger.error(`Server reported an error capturing screenshot for session ${errorMessage.id}:`, errorMessage.message);
+                        request.rejecter(new Error(errorMessage.message));
+                        screenshotRequests.delete(errorMessage.id);
                         break;
                     }
-                    logger.debug(`Received screenshot data URI for session ${screenshotMessage.id}.`);
-                    request.resolver({ dataUri: screenshotMessage.dataUri });
-                    screenshotRequests.delete(screenshotMessage.id);
-                    break;
-                }
-                case 'screenshotError': {
-                    if (!('message' in message) || !('id' in message)) {
-                        logger.warn('Received invalid screenshot error message:', message);
+                    case 'assetResult': {
+                        logger.debug('Received assetResult:', message);
+                        const request = assetRequests.get(message.url);
+                        if (!request) {
+                            logger.warn(`Received assetResult for unknown or already handled url: ${message.url}`);
+                            break;
+                        }
+                        if (message.result === 'success') {
+                            logger.debug('Asset result is success');
+                            request.resolver();
+                            assetRequests.delete(message.url);
+                            break;
+                        }
+                        const errorMessage = typeof message.message === 'string' && message.message ?
+                            message.message
+                            : `Asset processing failed: ${JSON.stringify(message)}`;
+                        logger.debug('Asset result is failure', errorMessage);
+                        request.rejecter(new Error(errorMessage));
+                        assetRequests.delete(message.url);
                         break;
                     }
-                    const errorMessage = message;
-                    const request = screenshotRequests.get(errorMessage.id);
-                    if (!request) {
-                        logger.warn(`Received screenshot error for unknown or already handled session: ${errorMessage.id}`);
+                    default:
+                        logger.warn(`Received unexpected message type: ${message.type}`);
                         break;
-                    }
-                    logger.error(`Server reported an error capturing screenshot for session ${errorMessage.id}:`, errorMessage.message);
-                    request.rejecter(new Error(errorMessage.message));
-                    screenshotRequests.delete(errorMessage.id);
-                    break;
                 }
-                case 'assetResult': {
-                    logger.debug('Received assetResult:', message);
-                    const request = assetRequests.get(message.url);
-                    if (!request) {
-                        logger.warn(`Received assetResult for unknown or already handled url: ${message.url}`);
-                        break;
+            });
+            ws.on('error', (err) => {
+                logger.error('WebSocket error:', err.message);
+                if (!hasResolved && (ws?.readyState === ws_1.WebSocket.CONNECTING || ws?.readyState === ws_1.WebSocket.OPEN)) {
+                    rejectConnection(err);
+                }
+            });
+            ws.on('close', () => {
+                if (pingInterval) {
+                    clearInterval(pingInterval);
+                    pingInterval = undefined;
+                }
+                const shouldReconnect = !intentionalDisconnect && connectionState !== 'disconnected';
+                updateConnectionState('disconnected');
+                logger.debug('Disconnected from server.');
+                failPendingRequests('Connection closed');
+                if (shouldReconnect) {
+                    scheduleReconnect();
+                }
+            });
+            ws.on('open', () => {
+                logger.debug(`Connected to ${serverAddress}`);
+                reconnectAttempts = 0;
+                updateConnectionState('connected');
+                pingInterval = setInterval(() => {
+                    if (ws && ws.readyState === ws_1.WebSocket.OPEN) {
+                        ws.ping();
                     }
-                    if (message.result === 'success') {
-                        logger.debug('Asset result is success');
-                        request.resolver();
-                        assetRequests.delete(message.url);
-                        break;
-                    }
-                    const errorMessage = typeof message.message === 'string' && message.message ?
-                        message.message
-                        : `Asset processing failed: ${JSON.stringify(message)}`;
-                    logger.debug('Asset result is failure', errorMessage);
-                    request.rejecter(new Error(errorMessage));
-                    assetRequests.delete(message.url);
-                    break;
+                }, 30000);
+                if (!hasResolved) {
+                    hasResolved = true;
+                    resolveConnection({
+                        screenshot,
+                        disconnect,
+                        startAdbTunnel,
+                        sendAsset,
+                        getConnectionState,
+                        onConnectionStateChange,
+                    });
                 }
-                default:
-                    logger.warn(`Received unexpected message type: ${message.type}`);
-                    break;
-            }
-        });
-        ws.on('error', (err) => {
-            logger.error('WebSocket error:', err.message);
-            if (ws && (ws.readyState === ws_1.WebSocket.CONNECTING || ws.readyState === ws_1.WebSocket.OPEN)) {
-                rejectConnection(err);
-            }
-            screenshotRequests.forEach((request) => request.rejecter(err));
-        });
-        ws.on('close', () => {
-            logger.debug('Disconnected from server.');
-            screenshotRequests.forEach((request) => request.rejecter('Disconnected from server'));
-        });
+            });
+        };
         const screenshot = async () => {
@@ -160,8 +259,17 @@ if (!ws || ws.readyState !== ws_1.WebSocket.OPEN) {
         const disconnect = () => {
-            if (ws) {
-                logger.debug('Closing WebSocket connection.');
-                ws.close();
-            }
-            screenshotRequests.forEach((request) => request.rejecter('Websocket connection closed'));
+            intentionalDisconnect = true;
+            cleanup();
+            updateConnectionState('disconnected');
+            failPendingRequests('Intentional disconnect');
+            logger.debug('Intentionally disconnected from WebSocket.');
         };
+        const getConnectionState = () => {
+            return connectionState;
+        };
+        const onConnectionStateChange = (callback) => {
+            stateChangeCallbacks.add(callback);
+            return () => {
+                stateChangeCallbacks.delete(callback);
+            };
+        };
         /**
@@ -172,6 +280,11 @@ * Opens a WebSocket TCP proxy for the ADB port and connects the local adb
         const startAdbTunnel = async () => {
-            const { address, close } = await (0, tunnel_1.startTcpTunnel)(options.adbUrl, options.token, '127.0.0.1', 0);
+            const tunnel = await (0, tunnel_1.startTcpTunnel)(options.adbUrl, options.token, '127.0.0.1', 0, {
+                maxReconnectAttempts,
+                reconnectDelay,
+                maxReconnectDelay,
+                logLevel,
+            });
             try {
                 await new Promise((resolve, reject) => {
-                    (0, node_child_process_1.exec)(`${options.adbPath ?? 'adb'} connect ${address.address}:${address.port}`, (err) => {
+                    (0, node_child_process_1.exec)(`${options.adbPath ?? 'adb'} connect ${tunnel.address.address}:${tunnel.address.port}`, (err) => {
                         if (err)
@@ -182,9 +295,9 @@ return reject(err);
                 });
-                logger.debug(`ADB connected on ${address.address}`);
+                logger.debug(`ADB connected on ${tunnel.address.address}`);
             }
             catch (err) {
-                close();
+                tunnel.close();
                 throw err;
             }
-            return { address, close };
+            return tunnel;
         };
@@ -208,13 +321,6 @@ const sendAsset = async (url) => {
         };
-        ws.on('open', () => {
-            logger.debug(`Connected to ${serverAddress}`);
-            resolveConnection({
-                screenshot,
-                disconnect,
-                startAdbTunnel,
-                sendAsset,
-            });
-        });
+        // Start the initial connection
+        setupWebSocket();
     });
 }
 //# sourceMappingURL=instance-client.js.map

instance-client.js.map

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instance-client.mjs

@@ -12,5 +12,13 @@ import { WebSocket } from 'ws';
     const logLevel = options.logLevel ?? 'info';
+    const maxReconnectAttempts = options.maxReconnectAttempts ?? 6;
+    const reconnectDelay = options.reconnectDelay ?? 1000;
+    const maxReconnectDelay = options.maxReconnectDelay ?? 30000;
     let ws = undefined;
+    let connectionState = 'connecting';
+    let reconnectAttempts = 0;
+    let reconnectTimeout;
+    let intentionalDisconnect = false;
     const screenshotRequests = new Map();
     const assetRequests = new Map();
+    const stateChangeCallbacks = new Set();
     // Logger functions
@@ -35,84 +43,175 @@ const logger = {
     };
+    const updateConnectionState = (newState) => {
+        if (connectionState !== newState) {
+            connectionState = newState;
+            logger.debug(`Connection state changed to: ${newState}`);
+            stateChangeCallbacks.forEach((callback) => {
+                try {
+                    callback(newState);
+                }
+                catch (err) {
+                    logger.error('Error in connection state callback:', err);
+                }
+            });
+        }
+    };
+    const failPendingRequests = (reason) => {
+        screenshotRequests.forEach((request) => request.rejecter(new Error(reason)));
+        screenshotRequests.clear();
+        assetRequests.forEach((request) => request.rejecter(new Error(reason)));
+        assetRequests.clear();
+    };
+    const cleanup = () => {
+        if (reconnectTimeout) {
+            clearTimeout(reconnectTimeout);
+            reconnectTimeout = undefined;
+        }
+        if (pingInterval) {
+            clearInterval(pingInterval);
+            pingInterval = undefined;
+        }
+        if (ws) {
+            ws.removeAllListeners();
+            if (ws.readyState === WebSocket.OPEN || ws.readyState === WebSocket.CONNECTING) {
+                ws.close();
+            }
+            ws = undefined;
+        }
+    };
+    let pingInterval;
     return new Promise((resolveConnection, rejectConnection) => {
-        logger.debug(`Attempting to connect to WebSocket server at ${serverAddress}...`);
-        ws = new WebSocket(serverAddress);
-        ws.on('message', (data) => {
-            let message;
-            try {
-                message = JSON.parse(data.toString());
+        let hasResolved = false;
+        // Reconnection logic with exponential backoff
+        const scheduleReconnect = () => {
+            if (intentionalDisconnect) {
+                logger.debug('Skipping reconnection (intentional disconnect)');
+                return;
             }
-            catch (e) {
-                logger.error({ data, error: e }, 'Failed to parse JSON message');
+            if (reconnectAttempts >= maxReconnectAttempts) {
+                logger.error(`Max reconnection attempts (${maxReconnectAttempts}) reached. Giving up.`);
+                updateConnectionState('disconnected');
                 return;
             }
-            switch (message.type) {
-                case 'screenshot': {
-                    if (!('dataUri' in message) || typeof message.dataUri !== 'string' || !('id' in message)) {
-                        logger.warn('Received invalid screenshot message:', message);
+            const currentDelay = Math.min(reconnectDelay * Math.pow(2, reconnectAttempts), maxReconnectDelay);
+            reconnectAttempts++;
+            logger.debug(`Scheduling reconnection attempt ${reconnectAttempts} in ${currentDelay}ms...`);
+            updateConnectionState('reconnecting');
+            reconnectTimeout = setTimeout(() => {
+                logger.debug(`Attempting to reconnect (attempt ${reconnectAttempts})...`);
+                setupWebSocket();
+            }, currentDelay);
+        };
+        const setupWebSocket = () => {
+            cleanup();
+            updateConnectionState('connecting');
+            ws = new WebSocket(serverAddress);
+            ws.on('message', (data) => {
+                let message;
+                try {
+                    message = JSON.parse(data.toString());
+                }
+                catch (e) {
+                    logger.error({ data, error: e }, 'Failed to parse JSON message');
+                    return;
+                }
+                switch (message.type) {
+                    case 'screenshot': {
+                        if (!('dataUri' in message) || typeof message.dataUri !== 'string' || !('id' in message)) {
+                            logger.warn('Received invalid screenshot message:', message);
+                            break;
+                        }
+                        const screenshotMessage = message;
+                        const request = screenshotRequests.get(screenshotMessage.id);
+                        if (!request) {
+                            logger.warn(`Received screenshot data for unknown or already handled session: ${screenshotMessage.id}`);
+                            break;
+                        }
+                        logger.debug(`Received screenshot data URI for session ${screenshotMessage.id}.`);
+                        request.resolver({ dataUri: screenshotMessage.dataUri });
+                        screenshotRequests.delete(screenshotMessage.id);
                         break;
                     }
-                    const screenshotMessage = message;
-                    const request = screenshotRequests.get(screenshotMessage.id);
-                    if (!request) {
-                        logger.warn(`Received screenshot data for unknown or already handled session: ${screenshotMessage.id}`);
+                    case 'screenshotError': {
+                        if (!('message' in message) || !('id' in message)) {
+                            logger.warn('Received invalid screenshot error message:', message);
+                            break;
+                        }
+                        const errorMessage = message;
+                        const request = screenshotRequests.get(errorMessage.id);
+                        if (!request) {
+                            logger.warn(`Received screenshot error for unknown or already handled session: ${errorMessage.id}`);
+                            break;
+                        }
+                        logger.error(`Server reported an error capturing screenshot for session ${errorMessage.id}:`, errorMessage.message);
+                        request.rejecter(new Error(errorMessage.message));
+                        screenshotRequests.delete(errorMessage.id);
                         break;
                     }
-                    logger.debug(`Received screenshot data URI for session ${screenshotMessage.id}.`);
-                    request.resolver({ dataUri: screenshotMessage.dataUri });
-                    screenshotRequests.delete(screenshotMessage.id);
-                    break;
-                }
-                case 'screenshotError': {
-                    if (!('message' in message) || !('id' in message)) {
-                        logger.warn('Received invalid screenshot error message:', message);
+                    case 'assetResult': {
+                        logger.debug('Received assetResult:', message);
+                        const request = assetRequests.get(message.url);
+                        if (!request) {
+                            logger.warn(`Received assetResult for unknown or already handled url: ${message.url}`);
+                            break;
+                        }
+                        if (message.result === 'success') {
+                            logger.debug('Asset result is success');
+                            request.resolver();
+                            assetRequests.delete(message.url);
+                            break;
+                        }
+                        const errorMessage = typeof message.message === 'string' && message.message ?
+                            message.message
+                            : `Asset processing failed: ${JSON.stringify(message)}`;
+                        logger.debug('Asset result is failure', errorMessage);
+                        request.rejecter(new Error(errorMessage));
+                        assetRequests.delete(message.url);
                         break;
                     }
-                    const errorMessage = message;
-                    const request = screenshotRequests.get(errorMessage.id);
-                    if (!request) {
-                        logger.warn(`Received screenshot error for unknown or already handled session: ${errorMessage.id}`);
+                    default:
+                        logger.warn(`Received unexpected message type: ${message.type}`);
                         break;
-                    }
-                    logger.error(`Server reported an error capturing screenshot for session ${errorMessage.id}:`, errorMessage.message);
-                    request.rejecter(new Error(errorMessage.message));
-                    screenshotRequests.delete(errorMessage.id);
-                    break;
                 }
-                case 'assetResult': {
-                    logger.debug('Received assetResult:', message);
-                    const request = assetRequests.get(message.url);
-                    if (!request) {
-                        logger.warn(`Received assetResult for unknown or already handled url: ${message.url}`);
-                        break;
+            });
+            ws.on('error', (err) => {
+                logger.error('WebSocket error:', err.message);
+                if (!hasResolved && (ws?.readyState === WebSocket.CONNECTING || ws?.readyState === WebSocket.OPEN)) {
+                    rejectConnection(err);
+                }
+            });
+            ws.on('close', () => {
+                if (pingInterval) {
+                    clearInterval(pingInterval);
+                    pingInterval = undefined;
+                }
+                const shouldReconnect = !intentionalDisconnect && connectionState !== 'disconnected';
+                updateConnectionState('disconnected');
+                logger.debug('Disconnected from server.');
+                failPendingRequests('Connection closed');
+                if (shouldReconnect) {
+                    scheduleReconnect();
+                }
+            });
+            ws.on('open', () => {
+                logger.debug(`Connected to ${serverAddress}`);
+                reconnectAttempts = 0;
+                updateConnectionState('connected');
+                pingInterval = setInterval(() => {
+                    if (ws && ws.readyState === WebSocket.OPEN) {
+                        ws.ping();
                     }
-                    if (message.result === 'success') {
-                        logger.debug('Asset result is success');
-                        request.resolver();
-                        assetRequests.delete(message.url);
-                        break;
-                    }
-                    const errorMessage = typeof message.message === 'string' && message.message ?
-                        message.message
-                        : `Asset processing failed: ${JSON.stringify(message)}`;
-                    logger.debug('Asset result is failure', errorMessage);
-                    request.rejecter(new Error(errorMessage));
-                    assetRequests.delete(message.url);
-                    break;
+                }, 30000);
+                if (!hasResolved) {
+                    hasResolved = true;
+                    resolveConnection({
+                        screenshot,
+                        disconnect,
+                        startAdbTunnel,
+                        sendAsset,
+                        getConnectionState,
+                        onConnectionStateChange,
+                    });
                 }
-                default:
-                    logger.warn(`Received unexpected message type: ${message.type}`);
-                    break;
-            }
-        });
-        ws.on('error', (err) => {
-            logger.error('WebSocket error:', err.message);
-            if (ws && (ws.readyState === WebSocket.CONNECTING || ws.readyState === WebSocket.OPEN)) {
-                rejectConnection(err);
-            }
-            screenshotRequests.forEach((request) => request.rejecter(err));
-        });
-        ws.on('close', () => {
-            logger.debug('Disconnected from server.');
-            screenshotRequests.forEach((request) => request.rejecter('Disconnected from server'));
-        });
+            });
+        };
         const screenshot = async () => {
@@ -157,8 +256,17 @@ if (!ws || ws.readyState !== WebSocket.OPEN) {
         const disconnect = () => {
-            if (ws) {
-                logger.debug('Closing WebSocket connection.');
-                ws.close();
-            }
-            screenshotRequests.forEach((request) => request.rejecter('Websocket connection closed'));
+            intentionalDisconnect = true;
+            cleanup();
+            updateConnectionState('disconnected');
+            failPendingRequests('Intentional disconnect');
+            logger.debug('Intentionally disconnected from WebSocket.');
         };
+        const getConnectionState = () => {
+            return connectionState;
+        };
+        const onConnectionStateChange = (callback) => {
+            stateChangeCallbacks.add(callback);
+            return () => {
+                stateChangeCallbacks.delete(callback);
+            };
+        };
         /**
@@ -169,6 +277,11 @@ * Opens a WebSocket TCP proxy for the ADB port and connects the local adb
         const startAdbTunnel = async () => {
-            const { address, close } = await startTcpTunnel(options.adbUrl, options.token, '127.0.0.1', 0);
+            const tunnel = await startTcpTunnel(options.adbUrl, options.token, '127.0.0.1', 0, {
+                maxReconnectAttempts,
+                reconnectDelay,
+                maxReconnectDelay,
+                logLevel,
+            });
             try {
                 await new Promise((resolve, reject) => {
-                    exec(`${options.adbPath ?? 'adb'} connect ${address.address}:${address.port}`, (err) => {
+                    exec(`${options.adbPath ?? 'adb'} connect ${tunnel.address.address}:${tunnel.address.port}`, (err) => {
                         if (err)
@@ -179,9 +292,9 @@ return reject(err);
                 });
-                logger.debug(`ADB connected on ${address.address}`);
+                logger.debug(`ADB connected on ${tunnel.address.address}`);
             }
             catch (err) {
-                close();
+                tunnel.close();
                 throw err;
             }
-            return { address, close };
+            return tunnel;
         };
@@ -205,13 +318,6 @@ const sendAsset = async (url) => {
         };
-        ws.on('open', () => {
-            logger.debug(`Connected to ${serverAddress}`);
-            resolveConnection({
-                screenshot,
-                disconnect,
-                startAdbTunnel,
-                sendAsset,
-            });
-        });
+        // Start the initial connection
+        setupWebSocket();
     });
 }
 //# sourceMappingURL=instance-client.mjs.map

instance-client.mjs.map

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package.json

 {
   "name": "@limrun/api",
-  "version": "0.13.1",
+  "version": "0.13.2",
   "description": "The official TypeScript library for the Limrun API",
@@ -5,0 +5,0 @@ "author": "Limrun <[e-mail]>",

src/index.ts

@@ -9,3 +9,3 @@ // File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 export { PagePromise } from './core/pagination';
-export { createInstanceClient } from './instance-client';
+export * from './instance-client';
 export {
@@ -12,0 +12,0 @@ LimrunError,

src/instance-client.ts

@@ -8,2 +8,12 @@ import { WebSocket, Data } from 'ws';
 /**
+ * Connection state of the instance client
+ */
+export type ConnectionState = 'connecting' | 'connected' | 'disconnected' | 'reconnecting';
+
+/**
+ * Callback function for connection state changes
+ */
+export type ConnectionStateCallback = (state: ConnectionState) => void;
+
+/**
  * A client for interacting with a Limbar instance
@@ -33,2 +43,13 @@ */
   sendAsset: (url: string) => Promise<void>;
+
+  /**
+   * Get current connection state
+   */
+  getConnectionState: () => ConnectionState;
+
+  /**
+   * Register callback for connection state changes
+   * @returns A function to unregister the callback
+   */
+  onConnectionStateChange: (callback: ConnectionStateCallback) => () => void;
 };
@@ -67,2 +88,17 @@
   logLevel?: LogLevel;
+  /**
+   * Maximum number of reconnection attempts
+   * @default 6
+   */
+  maxReconnectAttempts?: number;
+  /**
+   * Initial reconnection delay in milliseconds
+   * @default 1000
+   */
+  reconnectDelay?: number;
+  /**
+   * Maximum reconnection delay in milliseconds
+   * @default 30000
+   */
+  maxReconnectDelay?: number;
 };
@@ -117,3 +153,11 @@
   const logLevel = options.logLevel ?? 'info';
+  const maxReconnectAttempts = options.maxReconnectAttempts ?? 6;
+  const reconnectDelay = options.reconnectDelay ?? 1000;
+  const maxReconnectDelay = options.maxReconnectDelay ?? 30000;
+
   let ws: WebSocket | undefined = undefined;
+  let connectionState: ConnectionState = 'connecting';
+  let reconnectAttempts = 0;
+  let reconnectTimeout: NodeJS.Timeout | undefined;
+  let intentionalDisconnect = false;
 
@@ -136,2 +180,4 @@ const screenshotRequests: Map<
 
+  const stateChangeCallbacks: Set<ConnectionStateCallback> = new Set();
+
   // Logger functions
@@ -153,101 +199,210 @@ const logger = {
 
+  const updateConnectionState = (newState: ConnectionState): void => {
+    if (connectionState !== newState) {
+      connectionState = newState;
+      logger.debug(`Connection state changed to: ${newState}`);
+      stateChangeCallbacks.forEach((callback) => {
+        try {
+          callback(newState);
+        } catch (err) {
+          logger.error('Error in connection state callback:', err);
+        }
+      });
+    }
+  };
+
+  const failPendingRequests = (reason: string): void => {
+    screenshotRequests.forEach((request) => request.rejecter(new Error(reason)));
+    screenshotRequests.clear();
+    assetRequests.forEach((request) => request.rejecter(new Error(reason)));
+    assetRequests.clear();
+  };
+
+  const cleanup = (): void => {
+    if (reconnectTimeout) {
+      clearTimeout(reconnectTimeout);
+      reconnectTimeout = undefined;
+    }
+    if (pingInterval) {
+      clearInterval(pingInterval);
+      pingInterval = undefined;
+    }
+    if (ws) {
+      ws.removeAllListeners();
+      if (ws.readyState === WebSocket.OPEN || ws.readyState === WebSocket.CONNECTING) {
+        ws.close();
+      }
+      ws = undefined;
+    }
+  };
+
+  let pingInterval: NodeJS.Timeout | undefined;
+
   return new Promise<InstanceClient>((resolveConnection, rejectConnection) => {
-    logger.debug(`Attempting to connect to WebSocket server at ${serverAddress}...`);
-    ws = new WebSocket(serverAddress);
-    ws.on('message', (data: Data) => {
-      let message: ServerMessage;
-      try {
-        message = JSON.parse(data.toString());
-      } catch (e) {
-        logger.error({ data, error: e }, 'Failed to parse JSON message');
+    let hasResolved = false;
+
+    // Reconnection logic with exponential backoff
+    const scheduleReconnect = (): void => {
+      if (intentionalDisconnect) {
+        logger.debug('Skipping reconnection (intentional disconnect)');
         return;
       }
 
-      switch (message.type) {
-        case 'screenshot': {
-          if (!('dataUri' in message) || typeof message.dataUri !== 'string' || !('id' in message)) {
-            logger.warn('Received invalid screenshot message:', message);
-            break;
-          }
+      if (reconnectAttempts >= maxReconnectAttempts) {
+        logger.error(`Max reconnection attempts (${maxReconnectAttempts}) reached. Giving up.`);
+        updateConnectionState('disconnected');
+        return;
+      }
 
-          const screenshotMessage = message as ScreenshotResponse;
-          const request = screenshotRequests.get(screenshotMessage.id);
+      const currentDelay = Math.min(reconnectDelay * Math.pow(2, reconnectAttempts), maxReconnectDelay);
 
-          if (!request) {
-            logger.warn(
-              `Received screenshot data for unknown or already handled session: ${screenshotMessage.id}`,
-            );
-            break;
-          }
+      reconnectAttempts++;
+      logger.debug(`Scheduling reconnection attempt ${reconnectAttempts} in ${currentDelay}ms...`);
+      updateConnectionState('reconnecting');
 
-          logger.debug(`Received screenshot data URI for session ${screenshotMessage.id}.`);
-          request.resolver({ dataUri: screenshotMessage.dataUri });
-          screenshotRequests.delete(screenshotMessage.id);
-          break;
+      reconnectTimeout = setTimeout(() => {
+        logger.debug(`Attempting to reconnect (attempt ${reconnectAttempts})...`);
+        setupWebSocket();
+      }, currentDelay);
+    };
+
+    const setupWebSocket = (): void => {
+      cleanup();
+      updateConnectionState('connecting');
+
+      ws = new WebSocket(serverAddress);
+
+      ws.on('message', (data: Data) => {
+        let message: ServerMessage;
+        try {
+          message = JSON.parse(data.toString());
+        } catch (e) {
+          logger.error({ data, error: e }, 'Failed to parse JSON message');
+          return;
         }
-        case 'screenshotError': {
-          if (!('message' in message) || !('id' in message)) {
-            logger.warn('Received invalid screenshot error message:', message);
+
+        switch (message.type) {
+          case 'screenshot': {
+            if (!('dataUri' in message) || typeof message.dataUri !== 'string' || !('id' in message)) {
+              logger.warn('Received invalid screenshot message:', message);
+              break;
+            }
+
+            const screenshotMessage = message as ScreenshotResponse;
+            const request = screenshotRequests.get(screenshotMessage.id);
+
+            if (!request) {
+              logger.warn(
+                `Received screenshot data for unknown or already handled session: ${screenshotMessage.id}`,
+              );
+              break;
+            }
+
+            logger.debug(`Received screenshot data URI for session ${screenshotMessage.id}.`);
+            request.resolver({ dataUri: screenshotMessage.dataUri });
+            screenshotRequests.delete(screenshotMessage.id);
             break;
           }
+          case 'screenshotError': {
+            if (!('message' in message) || !('id' in message)) {
+              logger.warn('Received invalid screenshot error message:', message);
+              break;
+            }
 
-          const errorMessage = message as ScreenshotErrorResponse;
-          const request = screenshotRequests.get(errorMessage.id);
+            const errorMessage = message as ScreenshotErrorResponse;
+            const request = screenshotRequests.get(errorMessage.id);
 
-          if (!request) {
-            logger.warn(
-              `Received screenshot error for unknown or already handled session: ${errorMessage.id}`,
+            if (!request) {
+              logger.warn(
+                `Received screenshot error for unknown or already handled session: ${errorMessage.id}`,
+              );
+              break;
+            }
+
+            logger.error(
+              `Server reported an error capturing screenshot for session ${errorMessage.id}:`,
+              errorMessage.message,
             );
+            request.rejecter(new Error(errorMessage.message));
+            screenshotRequests.delete(errorMessage.id);
             break;
           }
-
-          logger.error(
-            `Server reported an error capturing screenshot for session ${errorMessage.id}:`,
-            errorMessage.message,
-          );
-          request.rejecter(new Error(errorMessage.message));
-          screenshotRequests.delete(errorMessage.id);
-          break;
-        }
-        case 'assetResult': {
-          logger.debug('Received assetResult:', message);
-          const request = assetRequests.get(message.url as string);
-          if (!request) {
-            logger.warn(`Received assetResult for unknown or already handled url: ${message.url}`);
+          case 'assetResult': {
+            logger.debug('Received assetResult:', message);
+            const request = assetRequests.get(message.url as string);
+            if (!request) {
+              logger.warn(`Received assetResult for unknown or already handled url: ${message.url}`);
+              break;
+            }
+            if (message.result === 'success') {
+              logger.debug('Asset result is success');
+              request.resolver();
+              assetRequests.delete(message.url as string);
+              break;
+            }
+            const errorMessage =
+              typeof message.message === 'string' && message.message ?
+                message.message
+              : `Asset processing failed: ${JSON.stringify(message)}`;
+            logger.debug('Asset result is failure', errorMessage);
+            request.rejecter(new Error(errorMessage));
+            assetRequests.delete(message.url as string);
             break;
           }
-          if (message.result === 'success') {
-            logger.debug('Asset result is success');
-            request.resolver();
-            assetRequests.delete(message.url as string);
+          default:
+            logger.warn(`Received unexpected message type: ${message.type}`);
             break;
-          }
-          const errorMessage =
-            typeof message.message === 'string' && message.message ?
-              message.message
-            : `Asset processing failed: ${JSON.stringify(message)}`;
-          logger.debug('Asset result is failure', errorMessage);
-          request.rejecter(new Error(errorMessage));
-          assetRequests.delete(message.url as string);
-          break;
         }
-        default:
-          logger.warn(`Received unexpected message type: ${message.type}`);
-          break;
-      }
-    });
+      });
 
-    ws.on('error', (err: Error) => {
-      logger.error('WebSocket error:', err.message);
-      if (ws && (ws.readyState === WebSocket.CONNECTING || ws.readyState === WebSocket.OPEN)) {
-        rejectConnection(err);
-      }
-      screenshotRequests.forEach((request) => request.rejecter(err));
-    });
+      ws.on('error', (err: Error) => {
+        logger.error('WebSocket error:', err.message);
+        if (!hasResolved && (ws?.readyState === WebSocket.CONNECTING || ws?.readyState === WebSocket.OPEN)) {
+          rejectConnection(err);
+        }
+      });
 
-    ws.on('close', () => {
-      logger.debug('Disconnected from server.');
-      screenshotRequests.forEach((request) => request.rejecter('Disconnected from server'));
-    });
+      ws.on('close', () => {
+        if (pingInterval) {
+          clearInterval(pingInterval);
+          pingInterval = undefined;
+        }
 
+        const shouldReconnect = !intentionalDisconnect && connectionState !== 'disconnected';
+        updateConnectionState('disconnected');
+
+        logger.debug('Disconnected from server.');
+
+        failPendingRequests('Connection closed');
+
+        if (shouldReconnect) {
+          scheduleReconnect();
+        }
+      });
+
+      ws.on('open', () => {
+        logger.debug(`Connected to ${serverAddress}`);
+        reconnectAttempts = 0;
+        updateConnectionState('connected');
+
+        pingInterval = setInterval(() => {
+          if (ws && ws.readyState === WebSocket.OPEN) {
+            (ws as any).ping();
+          }
+        }, 30_000);
+
+        if (!hasResolved) {
+          hasResolved = true;
+          resolveConnection({
+            screenshot,
+            disconnect,
+            startAdbTunnel,
+            sendAsset,
+            getConnectionState,
+            onConnectionStateChange,
+          });
+        }
+      });
+    };
+
     const screenshot = async (): Promise<ScreenshotData> => {
@@ -296,9 +451,20 @@ if (!ws || ws.readyState !== WebSocket.OPEN) {
     const disconnect = (): void => {
-      if (ws) {
-        logger.debug('Closing WebSocket connection.');
-        ws.close();
-      }
-      screenshotRequests.forEach((request) => request.rejecter('Websocket connection closed'));
+      intentionalDisconnect = true;
+      cleanup();
+      updateConnectionState('disconnected');
+      failPendingRequests('Intentional disconnect');
+      logger.debug('Intentionally disconnected from WebSocket.');
     };
 
+    const getConnectionState = (): ConnectionState => {
+      return connectionState;
+    };
+
+    const onConnectionStateChange = (callback: ConnectionStateCallback): (() => void) => {
+      stateChangeCallbacks.add(callback);
+      return () => {
+        stateChangeCallbacks.delete(callback);
+      };
+    };
+
     /**
@@ -309,16 +475,24 @@ * Opens a WebSocket TCP proxy for the ADB port and connects the local adb
     const startAdbTunnel = async (): Promise<Tunnel> => {
-      const { address, close } = await startTcpTunnel(options.adbUrl, options.token, '127.0.0.1', 0);
+      const tunnel = await startTcpTunnel(options.adbUrl, options.token, '127.0.0.1', 0, {
+        maxReconnectAttempts,
+        reconnectDelay,
+        maxReconnectDelay,
+        logLevel,
+      });
       try {
         await new Promise<void>((resolve, reject) => {
-          exec(`${options.adbPath ?? 'adb'} connect ${address.address}:${address.port}`, (err) => {
-            if (err) return reject(err);
-            resolve();
-          });
+          exec(
+            `${options.adbPath ?? 'adb'} connect ${tunnel.address.address}:${tunnel.address.port}`,
+            (err) => {
+              if (err) return reject(err);
+              resolve();
+            },
+          );
         });
-        logger.debug(`ADB connected on ${address.address}`);
+        logger.debug(`ADB connected on ${tunnel.address.address}`);
       } catch (err) {
-        close();
+        tunnel.close();
         throw err;
       }
-      return { address, close };
+      return tunnel;
     };
@@ -343,12 +517,6 @@
     };
-    ws.on('open', () => {
-      logger.debug(`Connected to ${serverAddress}`);
-      resolveConnection({
-        screenshot,
-        disconnect,
-        startAdbTunnel,
-        sendAsset,
-      });
-    });
+
+    // Start the initial connection
+    setupWebSocket();
   });
 }

src/tunnel.ts

 import * as net from 'net';
 import { WebSocket } from 'ws';
 
+/**
+ * Controls the verbosity of logging in the tunnel
+ */
+export type LogLevel = 'none' | 'error' | 'warn' | 'info' | 'debug';
+
+/**
+ * Connection state of the tunnel
+ */
+export type TunnelConnectionState = 'connecting' | 'connected' | 'disconnected' | 'reconnecting';
+
+/**
+ * Callback function for tunnel connection state changes
+ */
+export type TunnelConnectionStateCallback = (state: TunnelConnectionState) => void;
+
 export interface Tunnel {
@@ -10,13 +25,44 @@ address: {
   close: () => void;
+  /**
+   * Get current WebSocket connection state
+   */
+  getConnectionState: () => TunnelConnectionState;
+  /**
+   * Register callback for WebSocket connection state changes
+   * @returns A function to unregister the callback
+   */
+  onConnectionStateChange: (callback: TunnelConnectionStateCallback) => () => void;
 }
 
+export interface TcpTunnelOptions {
+  /**
+   * Maximum number of reconnection attempts
+   * @default 6
+   */
+  maxReconnectAttempts?: number;
+  /**
+   * Initial reconnection delay in milliseconds
+   * @default 1000
+   */
+  reconnectDelay?: number;
+  /**
+   * Maximum reconnection delay in milliseconds
+   * @default 30000
+   */
+  maxReconnectDelay?: number;
+  /**
+   * Controls logging verbosity
+   * @default 'info'
+   */
+  logLevel?: LogLevel;
+}
+
 /**
- * Starts a one-shot TCP → WebSocket proxy.
+ * Starts a persistent TCP → WebSocket proxy.
  *
  * The function creates a local TCP server that listens on an ephemeral port on
- * 127.0.0.1.  As soon as the **first** TCP client connects the server stops
- * accepting further connections and forwards all traffic between that client
- * and `remoteURL` through an authenticated WebSocket.  If you need to proxy
- * more than one TCP connection, call `startTcpTunnel` again to create a new
- * proxy instance.
+ * 127.0.0.1. When a TCP client connects, it forwards all traffic between that
+ * client and `remoteURL` through an authenticated WebSocket. The server remains
+ * active even after the client disconnects, allowing reconnection without
+ * recreating the tunnel.
  *
@@ -28,2 +74,3 @@ * @param remoteURL Remote WebSocket endpoint (e.g. wss://example.com/instance)
  *                  to find an available non-privileged port.
+ * @param options   Optional reconnection configuration
  */
@@ -35,3 +82,26 @@ export async function startTcpTunnel(
   port: number,
+  options?: TcpTunnelOptions,
 ): Promise<Tunnel> {
+  const maxReconnectAttempts = options?.maxReconnectAttempts ?? 6;
+  const reconnectDelay = options?.reconnectDelay ?? 1000;
+  const maxReconnectDelay = options?.maxReconnectDelay ?? 30000;
+  const logLevel = options?.logLevel ?? 'info';
+
+  // Logger functions
+  const logger = {
+    debug: (...args: any[]) => {
+      if (logLevel === 'debug') console.log('[Tunnel]', ...args);
+    },
+    info: (...args: any[]) => {
+      if (logLevel === 'info' || logLevel === 'debug') console.log('[Tunnel]', ...args);
+    },
+    warn: (...args: any[]) => {
+      if (logLevel === 'warn' || logLevel === 'info' || logLevel === 'debug')
+        console.warn('[Tunnel]', ...args);
+    },
+    error: (...args: any[]) => {
+      if (logLevel !== 'none') console.error('[Tunnel]', ...args);
+    },
+  };
+
   return new Promise((resolve, reject) => {
@@ -42,5 +112,29 @@ const server = net.createServer();
     let pingInterval: NodeJS.Timeout | undefined;
+    let reconnectTimeout: NodeJS.Timeout | undefined;
+    let reconnectAttempts = 0;
+    let intentionalDisconnect = false;
+    let tcpSocket: net.Socket | undefined;
+    let connectionState: TunnelConnectionState = 'connecting';
 
-    // close helper
-    const close = () => {
+    const stateChangeCallbacks: Set<TunnelConnectionStateCallback> = new Set();
+
+    const updateConnectionState = (newState: TunnelConnectionState): void => {
+      if (connectionState !== newState) {
+        connectionState = newState;
+        logger.debug(`Connection state changed to: ${newState}`);
+        stateChangeCallbacks.forEach((callback) => {
+          try {
+            callback(newState);
+          } catch (err) {
+            logger.error('Error in connection state callback:', err);
+          }
+        });
+      }
+    };
+
+    const cleanup = () => {
+      if (reconnectTimeout) {
+        clearTimeout(reconnectTimeout);
+        reconnectTimeout = undefined;
+      }
       if (pingInterval) {
@@ -50,5 +144,18 @@ clearInterval(pingInterval);
       }
-      if (ws && ws.readyState === WebSocket.OPEN) {
-        ws.close(1000, 'close');
+      if (ws) {
+        ws.removeAllListeners();
+        if (ws.readyState === WebSocket.OPEN || ws.readyState === WebSocket.CONNECTING) {
+          ws.close(1000, 'close');
+        }
+        ws = undefined;
       }
+    };
+
+    const close = () => {
+      intentionalDisconnect = true;
+      cleanup();
+      updateConnectionState('disconnected');
+      if (tcpSocket && !tcpSocket.destroyed) {
+        tcpSocket.destroy();
+      }
       if (server.listening) {
@@ -59,25 +166,40 @@ server.close();
 
-    // No AbortController support – proxy can be closed via the returned handle
+    const scheduleReconnect = (): void => {
+      if (intentionalDisconnect) {
+        logger.debug('Skipping reconnection (intentional disconnect)');
+        return;
+      }
 
-    // TCP server error
-    server.once('error', (err) => {
-      close();
-      reject(new Error(`TCP server error: ${err.message}`));
-    });
+      if (!tcpSocket || tcpSocket.destroyed) {
+        logger.debug('Skipping reconnection (TCP socket closed)');
+        return;
+      }
 
-    // Listening
-    server.once('listening', () => {
-      const address = server.address();
-      if (!address || typeof address === 'string') {
+      if (reconnectAttempts >= maxReconnectAttempts) {
+        logger.error(`Max reconnection attempts (${maxReconnectAttempts}) reached. Closing tunnel.`);
         close();
-        return reject(new Error('Failed to obtain listening address'));
+        return;
       }
-      resolve({ address, close });
-    });
 
-    // On first TCP connection
-    server.on('connection', (tcpSocket) => {
-      // Single-connection proxy
-      server.close();
+      const currentDelay = Math.min(reconnectDelay * Math.pow(2, reconnectAttempts), maxReconnectDelay);
 
+      reconnectAttempts++;
+      logger.debug(`Scheduling reconnection attempt ${reconnectAttempts} in ${currentDelay}ms...`);
+      updateConnectionState('reconnecting');
+
+      reconnectTimeout = setTimeout(() => {
+        logger.debug(`Attempting to reconnect (attempt ${reconnectAttempts})...`);
+        setupWebSocket();
+      }, currentDelay);
+    };
+
+    const setupWebSocket = (): void => {
+      if (!tcpSocket || tcpSocket.destroyed) {
+        logger.error('Cannot setup WebSocket: TCP socket is closed');
+        return;
+      }
+
+      cleanup();
+      updateConnectionState('connecting');
+
       ws = new WebSocket(remoteURL, {
@@ -88,12 +210,34 @@ headers: { Authorization: `Bearer ${token}` },
 
-      // WebSocket error
-      ws.once('error', (err: any) => {
-        console.error('WebSocket error:', err);
-        tcpSocket.destroy();
-        close();
+      ws.on('error', (err: any) => {
+        logger.error('WebSocket error:', err.message || err);
       });
 
-      ws.once('open', () => {
-        const socket = ws as WebSocket; // non-undefined after open
+      ws.on('close', () => {
+        if (pingInterval) {
+          clearInterval(pingInterval);
+          pingInterval = undefined;
+        }
 
+        const shouldReconnect = !intentionalDisconnect && connectionState !== 'disconnected';
+        updateConnectionState('disconnected');
+
+        logger.debug('WebSocket disconnected');
+
+        // Pause TCP socket to apply backpressure - TCP will handle buffering
+        if (tcpSocket && !tcpSocket.destroyed && !tcpSocket.isPaused()) {
+          logger.debug('Pausing TCP socket (applying backpressure)');
+          tcpSocket.pause();
+        }
+
+        if (shouldReconnect && tcpSocket && !tcpSocket.destroyed) {
+          scheduleReconnect();
+        }
+      });
+
+      ws.on('open', () => {
+        const socket = ws as WebSocket;
+        logger.debug('WebSocket connected');
+        reconnectAttempts = 0;
+        updateConnectionState('connected');
+
         pingInterval = setInterval(() => {
@@ -105,12 +249,23 @@ if (socket.readyState === WebSocket.OPEN) {
 
-        // TCP → WS
-        tcpSocket.on('data', (chunk) => {
+        // Resume TCP socket - queued data will flow through
+        if (tcpSocket && tcpSocket.isPaused()) {
+          logger.debug('Resuming TCP socket (releasing backpressure)');
+          tcpSocket.resume();
+        }
+
+        // TCP → WS: Forward data directly
+        const onTcpData = (chunk: Buffer) => {
           if (socket.readyState === WebSocket.OPEN) {
             socket.send(chunk);
           }
-        });
+          // If WebSocket is not ready, data will queue in TCP buffers (backpressure)
+        };
 
+        // Remove old listener if exists and add new one
+        tcpSocket!.removeListener('data', onTcpData);
+        tcpSocket!.on('data', onTcpData);
+
         // WS → TCP
         socket.on('message', (data: any) => {
-          if (!tcpSocket.destroyed) {
+          if (tcpSocket && !tcpSocket.destroyed) {
             tcpSocket.write(data as Buffer);
@@ -120,11 +275,75 @@ }
       });
+    };
 
-      // Mutual close
-      tcpSocket.on('close', close);
-      tcpSocket.on('error', (err: any) => {
-        console.error('TCP socket error:', err);
+    // TCP server error
+    server.once('error', (err) => {
+      close();
+      reject(new Error(`TCP server error: ${err.message}`));
+    });
+
+    const getConnectionState = (): TunnelConnectionState => {
+      return connectionState;
+    };
+
+    const onConnectionStateChange = (callback: TunnelConnectionStateCallback): (() => void) => {
+      stateChangeCallbacks.add(callback);
+      return () => {
+        stateChangeCallbacks.delete(callback);
+      };
+    };
+
+    // Listening
+    server.once('listening', () => {
+      const address = server.address();
+      if (!address || typeof address === 'string') {
         close();
+        return reject(new Error('Failed to obtain listening address'));
+      }
+      resolve({
+        address,
+        close,
+        getConnectionState,
+        onConnectionStateChange,
       });
+    });
 
-      ws.on('close', () => tcpSocket.destroy());
+    // Helper to clean up current connection but keep server alive
+    const cleanupConnection = () => {
+      cleanup();
+      updateConnectionState('disconnected');
+      if (tcpSocket && !tcpSocket.destroyed) {
+        tcpSocket.destroy();
+        tcpSocket = undefined;
+      }
+      // Reset reconnection state for next connection
+      reconnectAttempts = 0;
+      intentionalDisconnect = false;
+      logger.debug('Connection cleaned up, ready for new TCP connection');
+    };
+
+    // On TCP connection (can happen multiple times)
+    server.on('connection', (socket) => {
+      // If there's already an active connection, reject the new one
+      if (tcpSocket && !tcpSocket.destroyed) {
+        logger.debug('Rejecting new TCP connection - already have an active connection');
+        socket.destroy();
+        return;
+      }
+
+      logger.debug('TCP client connected');
+      tcpSocket = socket;
+
+      // TCP socket handlers
+      tcpSocket.on('close', () => {
+        logger.debug('TCP socket closed by client');
+        cleanupConnection();
+      });
+
+      tcpSocket.on('error', (err: any) => {
+        logger.error('TCP socket error:', err);
+        cleanupConnection();
+      });
+
+      // Start WebSocket connection
+      setupWebSocket();
     });
@@ -131,0 +350,0 @@

src/version.ts

@@ -1,1 +0,1 @@
-export const VERSION = '0.13.1'; // x-release-please-version
+export const VERSION = '0.13.2'; // x-release-please-version

tunnel.d.mts

@@ -0,1 +1,13 @@
+/**
+ * Controls the verbosity of logging in the tunnel
+ */
+export type LogLevel = 'none' | 'error' | 'warn' | 'info' | 'debug';
+/**
+ * Connection state of the tunnel
+ */
+export type TunnelConnectionState = 'connecting' | 'connected' | 'disconnected' | 'reconnecting';
+/**
+ * Callback function for tunnel connection state changes
+ */
+export type TunnelConnectionStateCallback = (state: TunnelConnectionState) => void;
 export interface Tunnel {
@@ -7,12 +19,42 @@ address: {
     close: () => void;
+    /**
+     * Get current WebSocket connection state
+     */
+    getConnectionState: () => TunnelConnectionState;
+    /**
+     * Register callback for WebSocket connection state changes
+     * @returns A function to unregister the callback
+     */
+    onConnectionStateChange: (callback: TunnelConnectionStateCallback) => () => void;
 }
+export interface TcpTunnelOptions {
+    /**
+     * Maximum number of reconnection attempts
+     * @default 6
+     */
+    maxReconnectAttempts?: number;
+    /**
+     * Initial reconnection delay in milliseconds
+     * @default 1000
+     */
+    reconnectDelay?: number;
+    /**
+     * Maximum reconnection delay in milliseconds
+     * @default 30000
+     */
+    maxReconnectDelay?: number;
+    /**
+     * Controls logging verbosity
+     * @default 'info'
+     */
+    logLevel?: LogLevel;
+}
 /**
- * Starts a one-shot TCP → WebSocket proxy.
+ * Starts a persistent TCP → WebSocket proxy.
  *
  * The function creates a local TCP server that listens on an ephemeral port on
- * 127.0.0.1.  As soon as the **first** TCP client connects the server stops
- * accepting further connections and forwards all traffic between that client
- * and `remoteURL` through an authenticated WebSocket.  If you need to proxy
- * more than one TCP connection, call `startTcpTunnel` again to create a new
- * proxy instance.
+ * 127.0.0.1. When a TCP client connects, it forwards all traffic between that
+ * client and `remoteURL` through an authenticated WebSocket. The server remains
+ * active even after the client disconnects, allowing reconnection without
+ * recreating the tunnel.
  *
@@ -24,4 +66,5 @@ * @param remoteURL Remote WebSocket endpoint (e.g. wss://example.com/instance)
  *                  to find an available non-privileged port.
+ * @param options   Optional reconnection configuration
  */
-export declare function startTcpTunnel(remoteURL: string, token: string, hostname: string, port: number): Promise<Tunnel>;
+export declare function startTcpTunnel(remoteURL: string, token: string, hostname: string, port: number, options?: TcpTunnelOptions): Promise<Tunnel>;
 //# sourceMappingURL=tunnel.d.mts.map

tunnel.d.mts.map

@@ -1,1 +0,1 @@
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+{"version":3,"file":"tunnel.d.mts","sourceRoot":"","sources":["src/tunnel.ts"],"names":[],"mappings":"AAGA;;GAEG;AACH,MAAM,MAAM,QAAQ,GAAG,MAAM,GAAG,OAAO,GAAG,MAAM,GAAG,MAAM,GAAG,OAAO,CAAC;AAEpE;;GAEG;AACH,MAAM,MAAM,qBAAqB,GAAG,YAAY,GAAG,WAAW,GAAG,cAAc,GAAG,cAAc,CAAC;AAEjG;;GAEG;AACH,MAAM,MAAM,6BAA6B,GAAG,CAAC,KAAK,EAAE,qBAAqB,KAAK,IAAI,CAAC;AAEnF,MAAM,WAAW,MAAM;IACrB,OAAO,EAAE;QACP,OAAO,EAAE,MAAM,CAAC;QAChB,IAAI,EAAE,MAAM,CAAC;KACd,CAAC;IACF,KAAK,EAAE,MAAM,IAAI,CAAC;IAClB;;OAEG;IACH,kBAAkB,EAAE,MAAM,qBAAqB,CAAC;IAChD;;;OAGG;IACH,uBAAuB,EAAE,CAAC,QAAQ,EAAE,6BAA6B,KAAK,MAAM,IAAI,CAAC;CAClF;AAED,MAAM,WAAW,gBAAgB;IAC/B;;;OAGG;IACH,oBAAoB,CAAC,EAAE,MAAM,CAAC;IAC9B;;;OAGG;IACH,cAAc,CAAC,EAAE,MAAM,CAAC;IACxB;;;OAGG;IACH,iBAAiB,CAAC,EAAE,MAAM,CAAC;IAC3B;;;OAGG;IACH,QAAQ,CAAC,EAAE,QAAQ,CAAC;CACrB;AAED;;;;;;;;;;;;;;;GAeG;AACH,wBAAsB,cAAc,CAClC,SAAS,EAAE,MAAM,EACjB,KAAK,EAAE,MAAM,EACb,QAAQ,EAAE,MAAM,EAChB,IAAI,EAAE,MAAM,EACZ,OAAO,CAAC,EAAE,gBAAgB,GACzB,OAAO,CAAC,MAAM,CAAC,CAwQjB"}

tunnel.d.ts

@@ -0,1 +1,13 @@
+/**
+ * Controls the verbosity of logging in the tunnel
+ */
+export type LogLevel = 'none' | 'error' | 'warn' | 'info' | 'debug';
+/**
+ * Connection state of the tunnel
+ */
+export type TunnelConnectionState = 'connecting' | 'connected' | 'disconnected' | 'reconnecting';
+/**
+ * Callback function for tunnel connection state changes
+ */
+export type TunnelConnectionStateCallback = (state: TunnelConnectionState) => void;
 export interface Tunnel {
@@ -7,12 +19,42 @@ address: {
     close: () => void;
+    /**
+     * Get current WebSocket connection state
+     */
+    getConnectionState: () => TunnelConnectionState;
+    /**
+     * Register callback for WebSocket connection state changes
+     * @returns A function to unregister the callback
+     */
+    onConnectionStateChange: (callback: TunnelConnectionStateCallback) => () => void;
 }
+export interface TcpTunnelOptions {
+    /**
+     * Maximum number of reconnection attempts
+     * @default 6
+     */
+    maxReconnectAttempts?: number;
+    /**
+     * Initial reconnection delay in milliseconds
+     * @default 1000
+     */
+    reconnectDelay?: number;
+    /**
+     * Maximum reconnection delay in milliseconds
+     * @default 30000
+     */
+    maxReconnectDelay?: number;
+    /**
+     * Controls logging verbosity
+     * @default 'info'
+     */
+    logLevel?: LogLevel;
+}
 /**
- * Starts a one-shot TCP → WebSocket proxy.
+ * Starts a persistent TCP → WebSocket proxy.
  *
  * The function creates a local TCP server that listens on an ephemeral port on
- * 127.0.0.1.  As soon as the **first** TCP client connects the server stops
- * accepting further connections and forwards all traffic between that client
- * and `remoteURL` through an authenticated WebSocket.  If you need to proxy
- * more than one TCP connection, call `startTcpTunnel` again to create a new
- * proxy instance.
+ * 127.0.0.1. When a TCP client connects, it forwards all traffic between that
+ * client and `remoteURL` through an authenticated WebSocket. The server remains
+ * active even after the client disconnects, allowing reconnection without
+ * recreating the tunnel.
  *
@@ -24,4 +66,5 @@ * @param remoteURL Remote WebSocket endpoint (e.g. wss://example.com/instance)
  *                  to find an available non-privileged port.
+ * @param options   Optional reconnection configuration
  */
-export declare function startTcpTunnel(remoteURL: string, token: string, hostname: string, port: number): Promise<Tunnel>;
+export declare function startTcpTunnel(remoteURL: string, token: string, hostname: string, port: number, options?: TcpTunnelOptions): Promise<Tunnel>;
 //# sourceMappingURL=tunnel.d.ts.map

tunnel.d.ts.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"tunnel.d.ts","sourceRoot":"","sources":["src/tunnel.ts"],"names":[],"mappings":"AAGA,MAAM,WAAW,MAAM;IACrB,OAAO,EAAE;QACP,OAAO,EAAE,MAAM,CAAC;QAChB,IAAI,EAAE,MAAM,CAAC;KACd,CAAC;IACF,KAAK,EAAE,MAAM,IAAI,CAAC;CACnB;AAED;;;;;;;;;;;;;;;GAeG;AACH,wBAAsB,cAAc,CAClC,SAAS,EAAE,MAAM,EACjB,KAAK,EAAE,MAAM,EACb,QAAQ,EAAE,MAAM,EAChB,IAAI,EAAE,MAAM,GACX,OAAO,CAAC,MAAM,CAAC,CA6FjB"}
+{"version":3,"file":"tunnel.d.ts","sourceRoot":"","sources":["src/tunnel.ts"],"names":[],"mappings":"AAGA;;GAEG;AACH,MAAM,MAAM,QAAQ,GAAG,MAAM,GAAG,OAAO,GAAG,MAAM,GAAG,MAAM,GAAG,OAAO,CAAC;AAEpE;;GAEG;AACH,MAAM,MAAM,qBAAqB,GAAG,YAAY,GAAG,WAAW,GAAG,cAAc,GAAG,cAAc,CAAC;AAEjG;;GAEG;AACH,MAAM,MAAM,6BAA6B,GAAG,CAAC,KAAK,EAAE,qBAAqB,KAAK,IAAI,CAAC;AAEnF,MAAM,WAAW,MAAM;IACrB,OAAO,EAAE;QACP,OAAO,EAAE,MAAM,CAAC;QAChB,IAAI,EAAE,MAAM,CAAC;KACd,CAAC;IACF,KAAK,EAAE,MAAM,IAAI,CAAC;IAClB;;OAEG;IACH,kBAAkB,EAAE,MAAM,qBAAqB,CAAC;IAChD;;;OAGG;IACH,uBAAuB,EAAE,CAAC,QAAQ,EAAE,6BAA6B,KAAK,MAAM,IAAI,CAAC;CAClF;AAED,MAAM,WAAW,gBAAgB;IAC/B;;;OAGG;IACH,oBAAoB,CAAC,EAAE,MAAM,CAAC;IAC9B;;;OAGG;IACH,cAAc,CAAC,EAAE,MAAM,CAAC;IACxB;;;OAGG;IACH,iBAAiB,CAAC,EAAE,MAAM,CAAC;IAC3B;;;OAGG;IACH,QAAQ,CAAC,EAAE,QAAQ,CAAC;CACrB;AAED;;;;;;;;;;;;;;;GAeG;AACH,wBAAsB,cAAc,CAClC,SAAS,EAAE,MAAM,EACjB,KAAK,EAAE,MAAM,EACb,QAAQ,EAAE,MAAM,EAChB,IAAI,EAAE,MAAM,EACZ,OAAO,CAAC,EAAE,gBAAgB,GACzB,OAAO,CAAC,MAAM,CAAC,CAwQjB"}

tunnel.js

@@ -8,10 +8,9 @@ "use strict";
 /**
- * Starts a one-shot TCP → WebSocket proxy.
+ * Starts a persistent TCP → WebSocket proxy.
  *
  * The function creates a local TCP server that listens on an ephemeral port on
- * 127.0.0.1.  As soon as the **first** TCP client connects the server stops
- * accepting further connections and forwards all traffic between that client
- * and `remoteURL` through an authenticated WebSocket.  If you need to proxy
- * more than one TCP connection, call `startTcpTunnel` again to create a new
- * proxy instance.
+ * 127.0.0.1. When a TCP client connects, it forwards all traffic between that
+ * client and `remoteURL` through an authenticated WebSocket. The server remains
+ * active even after the client disconnects, allowing reconnection without
+ * recreating the tunnel.
  *
@@ -23,4 +22,28 @@ * @param remoteURL Remote WebSocket endpoint (e.g. wss://example.com/instance)
  *                  to find an available non-privileged port.
+ * @param options   Optional reconnection configuration
  */
-async function startTcpTunnel(remoteURL, token, hostname, port) {
+async function startTcpTunnel(remoteURL, token, hostname, port, options) {
+    const maxReconnectAttempts = options?.maxReconnectAttempts ?? 6;
+    const reconnectDelay = options?.reconnectDelay ?? 1000;
+    const maxReconnectDelay = options?.maxReconnectDelay ?? 30000;
+    const logLevel = options?.logLevel ?? 'info';
+    // Logger functions
+    const logger = {
+        debug: (...args) => {
+            if (logLevel === 'debug')
+                console.log('[Tunnel]', ...args);
+        },
+        info: (...args) => {
+            if (logLevel === 'info' || logLevel === 'debug')
+                console.log('[Tunnel]', ...args);
+        },
+        warn: (...args) => {
+            if (logLevel === 'warn' || logLevel === 'info' || logLevel === 'debug')
+                console.warn('[Tunnel]', ...args);
+        },
+        error: (...args) => {
+            if (logLevel !== 'none')
+                console.error('[Tunnel]', ...args);
+        },
+    };
     return new Promise((resolve, reject) => {
@@ -30,4 +53,27 @@ const server = net.createServer();
         let pingInterval;
-        // close helper
-        const close = () => {
+        let reconnectTimeout;
+        let reconnectAttempts = 0;
+        let intentionalDisconnect = false;
+        let tcpSocket;
+        let connectionState = 'connecting';
+        const stateChangeCallbacks = new Set();
+        const updateConnectionState = (newState) => {
+            if (connectionState !== newState) {
+                connectionState = newState;
+                logger.debug(`Connection state changed to: ${newState}`);
+                stateChangeCallbacks.forEach((callback) => {
+                    try {
+                        callback(newState);
+                    }
+                    catch (err) {
+                        logger.error('Error in connection state callback:', err);
+                    }
+                });
+            }
+        };
+        const cleanup = () => {
+            if (reconnectTimeout) {
+                clearTimeout(reconnectTimeout);
+                reconnectTimeout = undefined;
+            }
             if (pingInterval) {
@@ -37,5 +83,17 @@ clearInterval(pingInterval);
             }
-            if (ws && ws.readyState === ws_1.WebSocket.OPEN) {
-                ws.close(1000, 'close');
+            if (ws) {
+                ws.removeAllListeners();
+                if (ws.readyState === ws_1.WebSocket.OPEN || ws.readyState === ws_1.WebSocket.CONNECTING) {
+                    ws.close(1000, 'close');
+                }
+                ws = undefined;
             }
+        };
+        const close = () => {
+            intentionalDisconnect = true;
+            cleanup();
+            updateConnectionState('disconnected');
+            if (tcpSocket && !tcpSocket.destroyed) {
+                tcpSocket.destroy();
+            }
             if (server.listening) {
@@ -45,21 +103,32 @@ server.close();
         };
-        // No AbortController support – proxy can be closed via the returned handle
-        // TCP server error
-        server.once('error', (err) => {
-            close();
-            reject(new Error(`TCP server error: ${err.message}`));
-        });
-        // Listening
-        server.once('listening', () => {
-            const address = server.address();
-            if (!address || typeof address === 'string') {
+        const scheduleReconnect = () => {
+            if (intentionalDisconnect) {
+                logger.debug('Skipping reconnection (intentional disconnect)');
+                return;
+            }
+            if (!tcpSocket || tcpSocket.destroyed) {
+                logger.debug('Skipping reconnection (TCP socket closed)');
+                return;
+            }
+            if (reconnectAttempts >= maxReconnectAttempts) {
+                logger.error(`Max reconnection attempts (${maxReconnectAttempts}) reached. Closing tunnel.`);
                 close();
-                return reject(new Error('Failed to obtain listening address'));
+                return;
             }
-            resolve({ address, close });
-        });
-        // On first TCP connection
-        server.on('connection', (tcpSocket) => {
-            // Single-connection proxy
-            server.close();
+            const currentDelay = Math.min(reconnectDelay * Math.pow(2, reconnectAttempts), maxReconnectDelay);
+            reconnectAttempts++;
+            logger.debug(`Scheduling reconnection attempt ${reconnectAttempts} in ${currentDelay}ms...`);
+            updateConnectionState('reconnecting');
+            reconnectTimeout = setTimeout(() => {
+                logger.debug(`Attempting to reconnect (attempt ${reconnectAttempts})...`);
+                setupWebSocket();
+            }, currentDelay);
+        };
+        const setupWebSocket = () => {
+            if (!tcpSocket || tcpSocket.destroyed) {
+                logger.error('Cannot setup WebSocket: TCP socket is closed');
+                return;
+            }
+            cleanup();
+            updateConnectionState('connecting');
             ws = new ws_1.WebSocket(remoteURL, {
@@ -69,10 +138,27 @@ headers: { Authorization: `Bearer ${token}` },
             });
-            // WebSocket error
-            ws.once('error', (err) => {
-                console.error('WebSocket error:', err);
-                tcpSocket.destroy();
-                close();
+            ws.on('error', (err) => {
+                logger.error('WebSocket error:', err.message || err);
             });
-            ws.once('open', () => {
-                const socket = ws; // non-undefined after open
+            ws.on('close', () => {
+                if (pingInterval) {
+                    clearInterval(pingInterval);
+                    pingInterval = undefined;
+                }
+                const shouldReconnect = !intentionalDisconnect && connectionState !== 'disconnected';
+                updateConnectionState('disconnected');
+                logger.debug('WebSocket disconnected');
+                // Pause TCP socket to apply backpressure - TCP will handle buffering
+                if (tcpSocket && !tcpSocket.destroyed && !tcpSocket.isPaused()) {
+                    logger.debug('Pausing TCP socket (applying backpressure)');
+                    tcpSocket.pause();
+                }
+                if (shouldReconnect && tcpSocket && !tcpSocket.destroyed) {
+                    scheduleReconnect();
+                }
+            });
+            ws.on('open', () => {
+                const socket = ws;
+                logger.debug('WebSocket connected');
+                reconnectAttempts = 0;
+                updateConnectionState('connected');
                 pingInterval = setInterval(() => {
@@ -83,11 +169,20 @@ if (socket.readyState === ws_1.WebSocket.OPEN) {
                 }, 30000);
-                // TCP → WS
-                tcpSocket.on('data', (chunk) => {
+                // Resume TCP socket - queued data will flow through
+                if (tcpSocket && tcpSocket.isPaused()) {
+                    logger.debug('Resuming TCP socket (releasing backpressure)');
+                    tcpSocket.resume();
+                }
+                // TCP → WS: Forward data directly
+                const onTcpData = (chunk) => {
                     if (socket.readyState === ws_1.WebSocket.OPEN) {
                         socket.send(chunk);
                     }
-                });
+                    // If WebSocket is not ready, data will queue in TCP buffers (backpressure)
+                };
+                // Remove old listener if exists and add new one
+                tcpSocket.removeListener('data', onTcpData);
+                tcpSocket.on('data', onTcpData);
                 // WS → TCP
                 socket.on('message', (data) => {
-                    if (!tcpSocket.destroyed) {
+                    if (tcpSocket && !tcpSocket.destroyed) {
                         tcpSocket.write(data);
@@ -97,10 +192,66 @@ }
             });
-            // Mutual close
-            tcpSocket.on('close', close);
-            tcpSocket.on('error', (err) => {
-                console.error('TCP socket error:', err);
+        };
+        // TCP server error
+        server.once('error', (err) => {
+            close();
+            reject(new Error(`TCP server error: ${err.message}`));
+        });
+        const getConnectionState = () => {
+            return connectionState;
+        };
+        const onConnectionStateChange = (callback) => {
+            stateChangeCallbacks.add(callback);
+            return () => {
+                stateChangeCallbacks.delete(callback);
+            };
+        };
+        // Listening
+        server.once('listening', () => {
+            const address = server.address();
+            if (!address || typeof address === 'string') {
                 close();
+                return reject(new Error('Failed to obtain listening address'));
+            }
+            resolve({
+                address,
+                close,
+                getConnectionState,
+                onConnectionStateChange,
             });
-            ws.on('close', () => tcpSocket.destroy());
         });
+        // Helper to clean up current connection but keep server alive
+        const cleanupConnection = () => {
+            cleanup();
+            updateConnectionState('disconnected');
+            if (tcpSocket && !tcpSocket.destroyed) {
+                tcpSocket.destroy();
+                tcpSocket = undefined;
+            }
+            // Reset reconnection state for next connection
+            reconnectAttempts = 0;
+            intentionalDisconnect = false;
+            logger.debug('Connection cleaned up, ready for new TCP connection');
+        };
+        // On TCP connection (can happen multiple times)
+        server.on('connection', (socket) => {
+            // If there's already an active connection, reject the new one
+            if (tcpSocket && !tcpSocket.destroyed) {
+                logger.debug('Rejecting new TCP connection - already have an active connection');
+                socket.destroy();
+                return;
+            }
+            logger.debug('TCP client connected');
+            tcpSocket = socket;
+            // TCP socket handlers
+            tcpSocket.on('close', () => {
+                logger.debug('TCP socket closed by client');
+                cleanupConnection();
+            });
+            tcpSocket.on('error', (err) => {
+                logger.error('TCP socket error:', err);
+                cleanupConnection();
+            });
+            // Start WebSocket connection
+            setupWebSocket();
+        });
         // Start listening
@@ -107,0 +258,0 @@ server.listen(port, hostname);

tunnel.js.map

@@ -1,1 +0,1 @@
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tunnel.mjs

 import * as net from 'net';
 import { WebSocket } from 'ws';
 /**
- * Starts a one-shot TCP → WebSocket proxy.
+ * Starts a persistent TCP → WebSocket proxy.
  *
  * The function creates a local TCP server that listens on an ephemeral port on
- * 127.0.0.1.  As soon as the **first** TCP client connects the server stops
- * accepting further connections and forwards all traffic between that client
- * and `remoteURL` through an authenticated WebSocket.  If you need to proxy
- * more than one TCP connection, call `startTcpTunnel` again to create a new
- * proxy instance.
+ * 127.0.0.1. When a TCP client connects, it forwards all traffic between that
+ * client and `remoteURL` through an authenticated WebSocket. The server remains
+ * active even after the client disconnects, allowing reconnection without
+ * recreating the tunnel.
  *
@@ -18,4 +17,28 @@ * @param remoteURL Remote WebSocket endpoint (e.g. wss://example.com/instance)
  *                  to find an available non-privileged port.
+ * @param options   Optional reconnection configuration
  */
-export async function startTcpTunnel(remoteURL, token, hostname, port) {
+export async function startTcpTunnel(remoteURL, token, hostname, port, options) {
+    const maxReconnectAttempts = options?.maxReconnectAttempts ?? 6;
+    const reconnectDelay = options?.reconnectDelay ?? 1000;
+    const maxReconnectDelay = options?.maxReconnectDelay ?? 30000;
+    const logLevel = options?.logLevel ?? 'info';
+    // Logger functions
+    const logger = {
+        debug: (...args) => {
+            if (logLevel === 'debug')
+                console.log('[Tunnel]', ...args);
+        },
+        info: (...args) => {
+            if (logLevel === 'info' || logLevel === 'debug')
+                console.log('[Tunnel]', ...args);
+        },
+        warn: (...args) => {
+            if (logLevel === 'warn' || logLevel === 'info' || logLevel === 'debug')
+                console.warn('[Tunnel]', ...args);
+        },
+        error: (...args) => {
+            if (logLevel !== 'none')
+                console.error('[Tunnel]', ...args);
+        },
+    };
     return new Promise((resolve, reject) => {
@@ -25,4 +48,27 @@ const server = net.createServer();
         let pingInterval;
-        // close helper
-        const close = () => {
+        let reconnectTimeout;
+        let reconnectAttempts = 0;
+        let intentionalDisconnect = false;
+        let tcpSocket;
+        let connectionState = 'connecting';
+        const stateChangeCallbacks = new Set();
+        const updateConnectionState = (newState) => {
+            if (connectionState !== newState) {
+                connectionState = newState;
+                logger.debug(`Connection state changed to: ${newState}`);
+                stateChangeCallbacks.forEach((callback) => {
+                    try {
+                        callback(newState);
+                    }
+                    catch (err) {
+                        logger.error('Error in connection state callback:', err);
+                    }
+                });
+            }
+        };
+        const cleanup = () => {
+            if (reconnectTimeout) {
+                clearTimeout(reconnectTimeout);
+                reconnectTimeout = undefined;
+            }
             if (pingInterval) {
@@ -32,5 +78,17 @@ clearInterval(pingInterval);
             }
-            if (ws && ws.readyState === WebSocket.OPEN) {
-                ws.close(1000, 'close');
+            if (ws) {
+                ws.removeAllListeners();
+                if (ws.readyState === WebSocket.OPEN || ws.readyState === WebSocket.CONNECTING) {
+                    ws.close(1000, 'close');
+                }
+                ws = undefined;
             }
+        };
+        const close = () => {
+            intentionalDisconnect = true;
+            cleanup();
+            updateConnectionState('disconnected');
+            if (tcpSocket && !tcpSocket.destroyed) {
+                tcpSocket.destroy();
+            }
             if (server.listening) {
@@ -40,21 +98,32 @@ server.close();
         };
-        // No AbortController support – proxy can be closed via the returned handle
-        // TCP server error
-        server.once('error', (err) => {
-            close();
-            reject(new Error(`TCP server error: ${err.message}`));
-        });
-        // Listening
-        server.once('listening', () => {
-            const address = server.address();
-            if (!address || typeof address === 'string') {
+        const scheduleReconnect = () => {
+            if (intentionalDisconnect) {
+                logger.debug('Skipping reconnection (intentional disconnect)');
+                return;
+            }
+            if (!tcpSocket || tcpSocket.destroyed) {
+                logger.debug('Skipping reconnection (TCP socket closed)');
+                return;
+            }
+            if (reconnectAttempts >= maxReconnectAttempts) {
+                logger.error(`Max reconnection attempts (${maxReconnectAttempts}) reached. Closing tunnel.`);
                 close();
-                return reject(new Error('Failed to obtain listening address'));
+                return;
             }
-            resolve({ address, close });
-        });
-        // On first TCP connection
-        server.on('connection', (tcpSocket) => {
-            // Single-connection proxy
-            server.close();
+            const currentDelay = Math.min(reconnectDelay * Math.pow(2, reconnectAttempts), maxReconnectDelay);
+            reconnectAttempts++;
+            logger.debug(`Scheduling reconnection attempt ${reconnectAttempts} in ${currentDelay}ms...`);
+            updateConnectionState('reconnecting');
+            reconnectTimeout = setTimeout(() => {
+                logger.debug(`Attempting to reconnect (attempt ${reconnectAttempts})...`);
+                setupWebSocket();
+            }, currentDelay);
+        };
+        const setupWebSocket = () => {
+            if (!tcpSocket || tcpSocket.destroyed) {
+                logger.error('Cannot setup WebSocket: TCP socket is closed');
+                return;
+            }
+            cleanup();
+            updateConnectionState('connecting');
             ws = new WebSocket(remoteURL, {
@@ -64,10 +133,27 @@ headers: { Authorization: `Bearer ${token}` },
             });
-            // WebSocket error
-            ws.once('error', (err) => {
-                console.error('WebSocket error:', err);
-                tcpSocket.destroy();
-                close();
+            ws.on('error', (err) => {
+                logger.error('WebSocket error:', err.message || err);
             });
-            ws.once('open', () => {
-                const socket = ws; // non-undefined after open
+            ws.on('close', () => {
+                if (pingInterval) {
+                    clearInterval(pingInterval);
+                    pingInterval = undefined;
+                }
+                const shouldReconnect = !intentionalDisconnect && connectionState !== 'disconnected';
+                updateConnectionState('disconnected');
+                logger.debug('WebSocket disconnected');
+                // Pause TCP socket to apply backpressure - TCP will handle buffering
+                if (tcpSocket && !tcpSocket.destroyed && !tcpSocket.isPaused()) {
+                    logger.debug('Pausing TCP socket (applying backpressure)');
+                    tcpSocket.pause();
+                }
+                if (shouldReconnect && tcpSocket && !tcpSocket.destroyed) {
+                    scheduleReconnect();
+                }
+            });
+            ws.on('open', () => {
+                const socket = ws;
+                logger.debug('WebSocket connected');
+                reconnectAttempts = 0;
+                updateConnectionState('connected');
                 pingInterval = setInterval(() => {
@@ -78,11 +164,20 @@ if (socket.readyState === WebSocket.OPEN) {
                 }, 30000);
-                // TCP → WS
-                tcpSocket.on('data', (chunk) => {
+                // Resume TCP socket - queued data will flow through
+                if (tcpSocket && tcpSocket.isPaused()) {
+                    logger.debug('Resuming TCP socket (releasing backpressure)');
+                    tcpSocket.resume();
+                }
+                // TCP → WS: Forward data directly
+                const onTcpData = (chunk) => {
                     if (socket.readyState === WebSocket.OPEN) {
                         socket.send(chunk);
                     }
-                });
+                    // If WebSocket is not ready, data will queue in TCP buffers (backpressure)
+                };
+                // Remove old listener if exists and add new one
+                tcpSocket.removeListener('data', onTcpData);
+                tcpSocket.on('data', onTcpData);
                 // WS → TCP
                 socket.on('message', (data) => {
-                    if (!tcpSocket.destroyed) {
+                    if (tcpSocket && !tcpSocket.destroyed) {
                         tcpSocket.write(data);
@@ -92,10 +187,66 @@ }
             });
-            // Mutual close
-            tcpSocket.on('close', close);
-            tcpSocket.on('error', (err) => {
-                console.error('TCP socket error:', err);
+        };
+        // TCP server error
+        server.once('error', (err) => {
+            close();
+            reject(new Error(`TCP server error: ${err.message}`));
+        });
+        const getConnectionState = () => {
+            return connectionState;
+        };
+        const onConnectionStateChange = (callback) => {
+            stateChangeCallbacks.add(callback);
+            return () => {
+                stateChangeCallbacks.delete(callback);
+            };
+        };
+        // Listening
+        server.once('listening', () => {
+            const address = server.address();
+            if (!address || typeof address === 'string') {
                 close();
+                return reject(new Error('Failed to obtain listening address'));
+            }
+            resolve({
+                address,
+                close,
+                getConnectionState,
+                onConnectionStateChange,
             });
-            ws.on('close', () => tcpSocket.destroy());
         });
+        // Helper to clean up current connection but keep server alive
+        const cleanupConnection = () => {
+            cleanup();
+            updateConnectionState('disconnected');
+            if (tcpSocket && !tcpSocket.destroyed) {
+                tcpSocket.destroy();
+                tcpSocket = undefined;
+            }
+            // Reset reconnection state for next connection
+            reconnectAttempts = 0;
+            intentionalDisconnect = false;
+            logger.debug('Connection cleaned up, ready for new TCP connection');
+        };
+        // On TCP connection (can happen multiple times)
+        server.on('connection', (socket) => {
+            // If there's already an active connection, reject the new one
+            if (tcpSocket && !tcpSocket.destroyed) {
+                logger.debug('Rejecting new TCP connection - already have an active connection');
+                socket.destroy();
+                return;
+            }
+            logger.debug('TCP client connected');
+            tcpSocket = socket;
+            // TCP socket handlers
+            tcpSocket.on('close', () => {
+                logger.debug('TCP socket closed by client');
+                cleanupConnection();
+            });
+            tcpSocket.on('error', (err) => {
+                logger.error('TCP socket error:', err);
+                cleanupConnection();
+            });
+            // Start WebSocket connection
+            setupWebSocket();
+        });
         // Start listening
@@ -102,0 +253,0 @@ server.listen(port, hostname);

tunnel.mjs.map

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version.d.mts

@@ -1,2 +0,2 @@
-export declare const VERSION = "0.13.1";
+export declare const VERSION = "0.13.2";
 //# sourceMappingURL=version.d.mts.map

version.d.ts

@@ -1,2 +0,2 @@
-export declare const VERSION = "0.13.1";
+export declare const VERSION = "0.13.2";
 //# sourceMappingURL=version.d.ts.map

version.js

 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.VERSION = void 0;
-exports.VERSION = '0.13.1'; // x-release-please-version
+exports.VERSION = '0.13.2'; // x-release-please-version
 //# sourceMappingURL=version.js.map

version.mjs

@@ -1,2 +0,2 @@
-export const VERSION = '0.13.1'; // x-release-please-version
+export const VERSION = '0.13.2'; // x-release-please-version
 //# sourceMappingURL=version.mjs.map

New alerts

URL strings

Supply chain risk

Package contains fragments of external URLs or IP addresses, which the package may be accessing at runtime.

Found 1 instance in 1 package

Fixed alerts

URL strings

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Package contains fragments of external URLs or IP addresses, which the package may be accessing at runtime.

Found 1 instance in 1 package

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Total package byte prevSize

773039

7.7%

Lines of code

10433

9.67%

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