Add support for connecting to Frida instances by address

src/index.ts

@@ -2,10 +2,14 @@ import WebSocket = require('isomorphic-ws');
 import createWebSocketStream = require('@httptoolkit/websocket-stream');
 import dbus = require('@httptoolkit/dbus-native');
 
-const FRIDA_PORT = 27042;
+const DEFAULT_FRIDA_PORT = 27042;
 
-export async function connect() {
-    const socket = new WebSocket(`ws://localhost:${FRIDA_PORT}/ws`);
+export async function connect(options: {
+    host?: string
+} = {}) {
+    const fridaHost = options.host || `localhost:${DEFAULT_FRIDA_PORT}`;
+
+    const socket = new WebSocket(`ws://${fridaHost}/ws`);
     socket.binaryType = 'arraybuffer';
 
     await new Promise((resolve, reject) => {

test/test.spec.ts

@@ -153,4 +153,20 @@ describe("Frida-JS", () => {
         expect(resultingMessage).to.equal('INJECTED');
     });
 
+    it("can connect to a Frida instance by address", async () => {
+        try {
+            await connect({ host: 'localhost:12345' });
+            throw new Error('Should not connect successfully');
+        } catch (e: any) {
+            // This is expected. We can only check the error in Node though, as browsers
+            // don't expose full network error details:
+            if (isNode) {
+                expect(e.message).to.include('ECONNREFUSED 127.0.0.1:12345');
+            }
+        }
+
+        const client = await connect({ host: 'localhost:27042' });
+        expect((await client.enumerateProcesses()).length).to.be.greaterThan(0);
+    });
+
 })