w

.gitignore

@@ -0,0 +1,5 @@
+.DS_Store
+*.swp
+*.out
+.vscode
+node_modules/

Dockerfile

@@ -6,6 +6,7 @@ WORKDIR /code
 
 RUN npm i playwright@1.40.0
 RUN npm i web-locks
+RUN npm i ws
 
 COPY . .
 

index.mjs

@@ -6,14 +6,18 @@ import { locks } from 'web-locks';
 import crypto from 'crypto';
 import fs from 'fs';
 import { setTimeout } from 'timers/promises';
+import { WebSocketServer } from 'ws';
+
 
 // npm i playwright
 // npm i web-locks
+// npm i ws
 
 // nohup cloudflared tunnel --url http://localhost:8080 --no-autoupdate &  (or setsid)
 // setsid node playwright.mjs  (nohup doesnt work)
 
 // curl 'https://gowah44030-playwright.hf.space/..
+// https://gowah44030-playwright.hf.space/screenshot?js=1&url=https://www.investing.com
 
 globalThis.state = Object.assign(globalThis.state||{}, {
     browser: null,
@@ -179,4 +183,37 @@ const server = http.createServer(async function(req, res) {
     }
 });
 
+const wss = new WebSocketServer({ server });
+
+wss.on('connection', function connection(ws, req) {
+    console.log('wss.connection', req.url, req.headers);
+
+    ws.isAlive = true;
+    ws.on('pong', function heartbeat(){ //'Pong messages are automatically sent in response to ping messages as required by the spec.'
+        //console.log('pong');
+        this.isAlive = true;
+    });
+    
+    ws.on('message', function message(data) {
+        console.log('received: %s', data);
+    });
+
+    ws.addEventListener('close', function close() {
+        console.log('ws.close');
+    });
+    //ws.send('something');
+});
+
+// https://github.com/websockets/ws
+const interval = setInterval(function ping() {
+    wss.clients.forEach(function each(ws) {
+      if (ws.isAlive === false) return ws.terminate();
+  
+      ws.isAlive = false;
+      ws.ping();
+
+      ws.send('ping');//why: used by client to detect dead connection (because browser cant access ping/pong frames...(?))
+    });
+}, 30000);
+
 server.listen(7860);

test_evaluate.mjs

@@ -1,15 +1,15 @@
-await fetch('https://gowah44030-playwright.hf.space/evaluate', {
+let res = await fetch('https://gowah44030-playwright.hf.space/evaluate', {
     method: "POST",
     body: JSON.stringify({
         url: 'https://chat.lmsys.org/assets/index-c347e3dc.js',
         code: `
         (async function(){
-            return await new Promise(resolve=>{
+            return await new Promise(async (resolve)=>{
                      
              try {
-                resolve(await fetch('https://chat.lmsys.org').then(res=>res.text()));
-            } catch (e) { resolve(e);}
-            return;
+                //resolve(await fetch('https://chat.lmsys.org').then(res=>res.text()));
+             } catch (e) { resolve(e);}
+             //return;
 
 
                 const ws = new WebSocket('wss://chat.lmsys.org/queue/join');
@@ -22,4 +22,6 @@ await fetch('https://gowah44030-playwright.hf.space/evaluate', {
         })()
         `,
     })
-});
+}).then(res=>res.text());
+
+console.log(res);