Harden connectivity probe, add checking state, support URLTest/Fallback groups, MIT license

lib/clashApi.js

@@ -16,7 +16,9 @@ const textEncoder = new TextEncoder();
 export class ClashApi {
     constructor({ url = 'http://127.0.0.1:9090', secret = '' } = {}) {
         this._session = new Soup.Session();
-        this._session.timeout = 5;
+        // Above the 5 s /delay probe budget so libsoup's inactivity timeout
+        // doesn't abort a slow-but-alive latency measurement client-side.
+        this._session.timeout = 10;
         this.setEndpoint(url, secret);
     }
 
@@ -25,8 +27,16 @@ export class ClashApi {
         this._secret = secret || '';
     }
 
+    // Abort all in-flight requests and drop idle keep-alive connections.
+    destroy() {
+        this._session.abort();
+    }
+
     _message(method, path, body) {
-        const msg = Soup.Message.new(method, `${this._baseUrl}${path}`);
+        const uri = `${this._baseUrl}${path}`;
+        const msg = Soup.Message.new(method, uri);
+        if (!msg)
+            throw new Error(`Invalid API URL: ${uri}`);
         const headers = msg.get_request_headers();
         headers.append('Accept', 'application/json');
         if (this._secret)