Implement Node Monitor Service

- Check in with online nodes every n ms
- Update nodes that do not reply
- Added node object record helper
- Updated mysql wrapper for updating node info to accept bool or number

Server/utilities/httpRequests.js

@@ -39,30 +39,22 @@ exports.sendHttpRequest = function sendHttpRequest(requestOptions, data, callbac
         res.on('data', (data) => {
             const responseObject = {
                 "statusCode": res.statusCode,
-                "body": data
+                "body": (requestOptions.method === "POST") ? JSON.parse(data) : data.toString()
             };
-
-            try {
-                responseObject.body = JSON.parse(responseObject.body)
-            }
-            catch (err) {
-            }
-
             log.DEBUG("Response Object: ", responseObject);
-            return callback(responseObject);
+            callback(responseObject);
         })
     }).on('error', err => {
-        log.ERROR('Error: ', err.message)
+        if (err.code === "ECONNREFUSED"){
+            // Bot refused connection, assumed offline
+            log.WARN("Connection Refused");
+        }
+        else log.ERROR('Error: ', err.message, err);
+        callback(undefined);
         // TODO need to handle if the server is down
     })
 
-    if (requestOptions.timeout) {
-        req.setTimeout(requestOptions.timeout, () => {
-            return callback(false);
-        });
-    }
-
     // Write the data to the request and send it
-    req.write(data)
-    req.end()
+    req.write(data);
+    req.end();
 }