Server push (#111)

* Asynchronous bidirectional communication
* Use Atmosphere as a backend
* Use websockets if available, fallback to HTTP streaming
* Push mode (disabled, manual, automatic)
  * Configurable via servlet parameter pushMode
  * Disabled: The default; regular AJAX communication
  * Manual: Need explicit UI.push() call
  * Automatic: push all UIs in session when lock released
* UI.push()
  * Push pending state and RPC to client asynchronously
  * Must hold session lock when invoking

Change-Id: Idb5978ac81f7ff1e66665df4e3f96e29e4c419d4

2 files changed, 21 insertions, 0 deletions

diff --git a/WebContent/VAADIN/atmosphere.min.js b/WebContent/VAADIN/atmosphere.min.js
new file mode 100644
index 0000000000..64f6604951
--- /dev/null
+++ b/WebContent/VAADIN/atmosphere.min.js
@@ -0,0 +1,12 @@
+/*
+ * Atmosphere.js
+ * https://github.com/Atmosphere/atmosphere
+ * 
+ * Requires Portal 1.0
+ * https://github.com/flowersinthesand/portal
+ * 
+ * Copyright 2012-2013, Donghwan Kim 
+ * Licensed under the Apache License, Version 2.0
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
+(function(){function l(a,b){var c,f,g=b.headers||{};if(b.readResponsesHeaders)for(c in b.lastTimestamp=(a.getResponseHeader("X-Cache-Date")||"").split(" ").pop(),b.uuid=(a.getResponseHeader("X-Atmosphere-tracking-id")||"").split(" ").pop(),g)(f=a.getResponseHeader(c))&&(g[c]=f)}function m(a,b){var c,f,g=b.headers||{};b.dropAtmosphereHeaders||(a.setRequestHeader("X-Atmosphere-Framework",n),a.setRequestHeader("X-Atmosphere-Transport",b.transport),a.setRequestHeader("X-Cache-Date",b.lastTimestamp||0), b.trackMessageLength&&a.setRequestHeader("X-Atmosphere-TrackMessageSize","true"),b.contentType&&a.setRequestHeader("Content-Type",b.contentType),a.setRequestHeader("X-Atmosphere-tracking-id",b.uuid));for(c in g)f=g[c],(f=portal.support.isFunction(f)?f.call(null,a,b):f)&&a.setRequestHeader(c,f)}var n="1.1",k={},p=portal.support.now();k.subscribe=function(a){a=new k.AtmosphereRequest(a);a.open();return a};k.unsubscribe=portal.finalize;k.AtmosphereRequest=function(a){var b,c;a=portal.support.extend({url:"", connectTimeout:-1,reconnectInterval:0,timeout:3E5,method:"GET",fallbackMethod:"GET",headers:{},maxRequest:-1,transport:"long-polling",fallbackTransport:"streaming",dispatchUrl:null,webSocketPathDelimiter:"@@",webSocketBinaryType:null,enableXDR:!1,rewriteURL:!1,attachHeadersAsQueryString:!0,withCredentials:!1,trackMessageLength:!1,messageDelimiter:"|",shared:!1,lastTimestamp:0,readResponsesHeaders:!0,dropAtmosphereHeaders:!0,contentType:"",uuid:0,executeCallbackBeforeReconnect:!1},a);this.open=function(){function f(){g(); 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\ No newline at end of file
diff --git a/WebContent/VAADIN/portal.min.js b/WebContent/VAADIN/portal.min.js
new file mode 100644
index 0000000000..83228d205c
--- /dev/null
+++ b/WebContent/VAADIN/portal.min.js
@@ -0,0 +1,9 @@
+/*
+ * Portal v1.0
+ * http://github.com/flowersinthesand/portal
+ * 
+ * Copyright 2011-2013, Donghwan Kim 
+ * Licensed under the Apache License, Version 2.0
+ * http://www.apache.org/licenses/LICENSE-2.0
+ */
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