add 'reviver' function call to JSON parser in Socket object to convert null values to undefined

exec/load/json-client.js

@@ -87,10 +87,16 @@ function JSONClient(serverAddr,serverPort) {
 	this.callback;
 	this.updates=[];
 	
+	/* convert null values to undefined when parsing */
+	Socket.prototype.reviver = function(k,v) { if(v == null) return undefined; return v; };
+	
 	/* create new socket connection to server */
     this.connect = function() {
         this.socket=new Socket();
 		this.socket.connect(this.serverAddr,this.serverPort,this.settings.CONNECTION_TIMEOUT);
+		
+		if(!this.socket.is_connected)
+			throw("error connecting to server");
     }
     
     this.disconnect = function() {
@@ -161,6 +167,8 @@ function JSONClient(serverAddr,serverPort) {
 
 	/* receive a data packet */
 	this.receive=function() {
+		if(!this.socket.is_connected)
+			throw("socket disconnected");
 		if(!this.socket.data_waiting) 
 			return false;
 		else

exec/load/json-sock.js

@@ -14,7 +14,7 @@ Socket.prototype.ping_sent = 0;
 /* socket prototype to automatically encode JSON data */
 Socket.prototype.sendJSON = function(object) {
 	try {
-		var data=JSON.stringify(object)+"\r\n";
+		var data=JSON.stringify(object,this.replacer,this.space)+"\r\n";
 		this.send(data); 
 		log(LOG_DEBUG,"-->" + this.descriptor + ": " + data);
 	} catch(e) {
@@ -28,7 +28,7 @@ Socket.prototype.recvJSON = function() {
 	if(data != null) {
 		log(LOG_DEBUG,"<--" + this.descriptor + ": " + data);
 		try {
-			data=JSON.parse(data);
+			data=JSON.parse(data,this.reviver);
 		} 
 		catch(e) {
 			log(LOG_ERROR,e);