support for chunked responses

1 files changed, 25 insertions, 0 deletions

diff --git a/lib/caldav/xhr.js b/lib/caldav/xhr.js
index 4ed7ec6..abeae79 100644
--- a/lib/caldav/xhr.js
+++ b/lib/caldav/xhr.js
@@ -118,10 +118,35 @@
         }
       }
 
+
+      var hasProgressEvents = false;
+
+      // check for progress event support.
+      if ('onprogress' in xhr) {
+        hasProgressEvents = true;
+        var last = 0;
+        xhr.onprogress = function onProgress(event) {
+          var chunk = xhr.responseText.substr(last, event.loaded);
+          last = event.loaded;
+          if (this.ondata) {
+            this.ondata(chunk);
+          }
+        }.bind(this);
+      }
+
       xhr.onreadystatechange = function onReadyStateChange() {
         var data;
         if (xhr.readyState === 4) {
           data = xhr.responseText;
+
+          // emulate progress events for node...
+          // this really lame we should probably just
+          // use a real http request for node but this
+          // will let us do some testing via node for now.
+          if (!hasProgressEvents && this.ondata) {
+            this.ondata(data);
+          }
+
           this.waiting = false;
           callback(null, xhr);
         }