feat: add options for websocket (#3)

Co-authored-by: Zerounary <[email protected]>

README.md

@@ -98,6 +98,7 @@ const rws = new ReconnectingWebSocket('ws://my.site.com', [], options);
 ```typescript
 type Options = {
     WebSocket?: any; // WebSocket constructor, if none provided, defaults to global WebSocket
+    WebSocketOptions?: any; // WebSocket options
     maxReconnectionDelay?: number; // max delay in ms between reconnections
     minReconnectionDelay?: number; // min delay in ms between reconnections
     reconnectionDelayGrowFactor?: number; // how fast the reconnection delay grows
@@ -114,6 +115,7 @@ type Options = {
 
 ```javascript
 WebSocket: undefined,
+WebSocketOptions: {},
 maxReconnectionDelay: 10000,
 minReconnectionDelay: 1000 + Math.random() * 4000,
 reconnectionDelayGrowFactor: 1.3,

reconnecting-websocket.ts

@@ -25,6 +25,7 @@ export type CloseEvent = Events.CloseEvent;
 
 export type Options = {
     WebSocket?: any;
+    WebSocketOptions?: any | {};
     maxReconnectionDelay?: number;
     minReconnectionDelay?: number;
     reconnectionDelayGrowFactor?: number;
@@ -378,10 +379,10 @@ export default class ReconnectingWebSocket {
                 if (this._closeCalled) {
                     return;
                 }
-                this._debug('connect', {url, protocols: this._protocols});
+                this._debug('connect', {url, protocols: this._protocols, options: this._options});
                 this._ws = this._protocols
-                    ? new WebSocket(url, this._protocols)
-                    : new WebSocket(url);
+                ? new WebSocket(url, this._protocols, this._options.WebSocketOptions)
+                : new WebSocket(url, this._options.WebSocketOptions);
                 this._ws!.binaryType = this._binaryType;
                 this._connectLock = false;
                 this._addListeners();