added support for PUT content body and handle JSON error responses

lib/http_client.js

@@ -96,7 +96,7 @@ client.prototype.request = function(method, path, params, callback){
 	path: path,
     };
 
-    if(http_options['method'] == 'POST'){
+    if(['POST', 'PUT'].indexOf(http_options['method']) >= 0){
 	http_options['headers'] = {
 	    'Content-Type': 'application/json',
 	    'Content-Length': body.length,
@@ -116,17 +116,20 @@ client.prototype.request = function(method, path, params, callback){
 	});
 
 	res.on('end', function(){
-	    if(res.headers['content-type'] == 'application/json'){
-		data = JSON.parse(data);
+	    error = null;
+	    try{ data = JSON.parse(data); }catch(e){}
+	    if(data['errors']){
+		error = data['errors'];
+		data = null;
 	    }
 
 	    if(v8type.is(callback, v8type.FUNCTION)){
-		callback(null, data, res.statusCode);
+		callback(error, data, res.statusCode);
 	    }
 	});
     });
 
-    if(http_options['method'] == 'POST'){
+    if(['POST', 'PUT'].indexOf(http_options['method']) >= 0){
 	req.write(body);
     }
     req.end()