Avoid recursive exit calls

lib/multi-node.js

@@ -98,7 +98,9 @@ exports.listen = function(options, server){
 
 					}
 				});
-				process.exit();
+				if(signal !== 'exit'){
+					process.exit();
+				}
 			});
 		});
 
@@ -107,7 +109,14 @@ exports.listen = function(options, server){
 	return emitter;
 }
 
-exports.frameStream = function(stream){
+// pass in a raw unframed binary stream, and returns a framed stream for sending and
+// receving strings or other JSON data
+// The second parameter, trusted, indicates to use eval-based parsing which is much faster
+exports.frameStream = function(stream, trusted){
+	var parse = trusted ? function(json){
+		// eval is way faster than JSON.parse on V8 for some reason
+		return eval('(' + json + ')');
+	} : JSON.parse;
 	var emitter = new process.EventEmitter();
 	var buffered = [];
 	var start;
@@ -133,7 +142,7 @@ exports.frameStream = function(stream){
 						index += part.length;
 					});
 				}
-				emitter.emit("message", JSON.parse(buffer.toString("utf8", 0, buffer.length)));
+				emitter.emit("message", parse(buffer.toString("utf8", 0, buffer.length)));
 				start = i + 1;
 				buffered = [];
 			}