fix($http): don't send Content-Type header when no data

When a http request has no data (body), we should not send the
Content-Type header as it causes problems for some server-side
frameworks.

Closes #749

1 files changed, 4 insertions, 0 deletions

diff --git a/src/service/http.js b/src/service/http.js
index 5dd87d76..17cc68ea 100644
--- a/src/service/http.js
+++ b/src/service/http.js
@@ -470,6 +470,10 @@ function $HttpProvider() {
           reqData = transformData(config.data, headersGetter(reqHeaders), reqTransformFn),
           promise;
 
+      // strip content-type if data is undefined
+      if (isUndefined(config.data)) {
+        delete reqHeaders['Content-Type'];
+      }
 
       // send request
       promise = sendReq(config, reqData, reqHeaders);