Update server.js

@@ -5,6 +5,7 @@
  */
 
 const url = require('url');
+var rimraf = require("rimraf");
 const Gun = require('gun/gun');
 require('./gun-ws.js');
 const http = require('http');
@@ -13,9 +14,12 @@ var server = http.createServer();
 
 // LRU with last used sockets
 const QuickLRU = require('quick-lru');
-const lru = new QuickLRU({maxSize: 10});
-
-//var wss_event = new WebSocket.Server({ noServer: true});
+var evict = function(key,value){
+  console.log('!!!!!!!!!!!!!!! Garbage Collect',key);
+  var uuid = value.gun.opt()._.opt.ws.uuid;
+  if(uuid) rimraf("/tmp/"+uuid, function () { console.log("Cleaned up ID",uuid); });
+}
+const lru = new QuickLRU({maxSize: 10, onEviction: evict });
 
 server.on('upgrade', async function (request, socket, head) {
   var pathname = url.parse(request.url).pathname || '/gun';
@@ -30,12 +34,14 @@ server.on('upgrade', async function (request, socket, head) {
         // Create Node
         console.log('Create id',pathname);
         // NOTE: Only works with lib/ws.js shim allowing a predefined WS as ws.web parameter in Gun constructor
+        var uuid = Math.random().toString(36).substring(7);
         gun.server = new WebSocket.Server({ noServer: true, path: pathname});
         console.log('set peer',request.headers.host+pathname);
         gun.gun = new Gun({ 
             peers:[], // should we use self as peer?
-            localStorage: false, 
-            file: "tmp/"+Math.random().toString(36).substring(7), // neesa cleanup or better mechanism to isolate
+            localStorage: false,
+            uuid: uuid,
+            file: "tmp/"+uuid,
             multicast: false,
             ws: { noServer: true, path: pathname, web: gun.server }, 
             web: gun.server