From c1d8e4f977954318dacc4af2fd08451760a5e555 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Breitbart?= <jerch@rockborn.de>
Date: Fri, 1 Jul 2016 11:00:53 +0200
Subject: [PATCH] websocket buffer; requestAnimationFrame

---
 demo/app.js  | 27 +++++++++++++++++++++++----
 src/xterm.js |  5 +++--
 2 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/demo/app.js b/demo/app.js
index 8661cc6261..619956db1b 100644
--- a/demo/app.js
+++ b/demo/app.js
@@ -4,6 +4,9 @@ var expressWs = require('express-ws')(app);
 var os = require('os');
 var pty = require('pty.js');
 
+var sendHandler = null;
+var buf = '';
+
 app.use('/src', express.static(__dirname + '/../src'));
 app.use('/addons', express.static(__dirname + '/../addons'));
 
@@ -31,10 +34,26 @@ app.ws('/bash', function(ws, req) {
     env: process.env
   });
   term.on('data', function(data) {
-    try {
-      ws.send(data);
-    } catch (ex) {
-      // The WebSocket is not open, ignore
+    buf += data;
+    clearTimeout(sendHandler);
+    if (buf.length < 128000) {
+      //clearTimeout(sendHandler);
+      sendHandler = setTimeout(
+        function() {
+          try {
+            ws.send(buf);
+            buf = '';
+          } catch (ex) {
+            // The WebSocket is not open, ignore
+          }
+        }, 2);
+    } else {
+      try {
+        ws.send(buf);
+        buf = '';
+      } catch (ex) {
+        // The WebSocket is not open, ignore
+      }
     }
   });
   ws.on('message', function(msg) {
diff --git a/src/xterm.js b/src/xterm.js
index 51357afbd5..aaa0ef3b6b 100644
--- a/src/xterm.js
+++ b/src/xterm.js
@@ -1218,8 +1218,9 @@
           this._fullRefreshNext = true;
         } else {
           setTimeout(function () {
-            self.refresh(start, end, false);
-          }, 34)
+            requestAnimationFrame(function() {self.refresh(start, end, false);});
+            //self.refresh(start, end, false);
+          }, 10)
           this._refreshIsQueued = true;
         }
         return;