Customizable auth string

raven.js.diff

diff --git a/src/raven.js b/src/raven.js
index 9dd5e14..88662d3 100644
--- a/src/raven.js
+++ b/src/raven.js
@@ -508,11 +508,20 @@ function each(obj, callback) {
 }
 
 
+function getAuthParts() {
+    return [ 'sentry_version=4',
+            'sentry_client=raven-js/' + Raven.VERSION,
+            'sentry_key=' + globalKey ];
+}
+
+
+function getAuthQueryString(authParts) {
+    return '?' + authParts().join('&');
+}
+
+
 function setAuthQueryString() {
-    authQueryString =
-        '?sentry_version=4' +
-        '&sentry_client=raven-js/' + Raven.VERSION +
-        '&sentry_key=' + globalKey;
+    authQueryString = getAuthQueryString(getAuthParts);
 }
 
 
@@ -750,13 +759,13 @@ function send(data) {
     // Set lastEventId after we know the error should actually be sent
     lastEventId = data.event_id || (data.event_id = uuid4());
 
-    globalOptions.transportMechanism(data, globalServer, authQueryString);
+    globalOptions.transportMechanism(data, globalServer, getAuthParts);
 }
 
 
-function makeRequest(data, server, authQueryString) {
+function makeRequest(data, server, getAuthParts) {
     var img = newImage(),
-        src = server + authQueryString + '&sentry_data=' + encodeURIComponent(JSON.stringify(data));
+        src = server + getAuthQueryString(getAuthParts()) + '&sentry_data=' + encodeURIComponent(JSON.stringify(data));
 
     img.crossOrigin = 'anonymous';
     img.onload = function success() {