Web100 Network Diagnostic Tool (NDT) Java Applet

Version 3.7.0.2 (May 20, 2015)
From: https://github.com/ndt-project/ndt/releases
Unmodified, as baseline for future merges.
Will not compile, changes adapted from BiglyBT to follow.
Copyright 2003 University of Chicago.
3-clause license with requirement that:
  Modified copies and works based on the Software must carry prominent
  notices stating that you changed specified portions of the Software.
See LICENSE.txt and licenses/LICENSE-NDT.txt

apps/routerconsole/java/src/edu/internet2/ndt/JSONUtils.java

@@ -0,0 +1,69 @@
+package edu.internet2.ndt;
+
+import org.json.simple.JSONObject;
+import org.json.simple.JSONValue;
+import java.util.Iterator;
+import java.util.Map;
+
+/**
+ * Created by Sebastian Malecki on 13.05.14.
+ */
+public class JSONUtils {
+
+	/**
+	 * Function that return value from json object represented by jsontext containing a single message
+	 * which is assigned to "msg" key.
+	 * @param {String} JSON object
+	 * @return {int} obtained value from JSON object
+	 */
+	public static String getSingleMessage(String jsonTxt) {
+		return getValueFromJsonObj(jsonTxt, "msg");
+	}
+
+	/**
+	 * Function that return value for given key from json object represented by jsontext
+	 * @param {String} JSON object
+	 * @param {int} key by which value should be obtained from JSON map
+	 * @return {int} obtained value from JSON map
+	 */
+	public static String getValueFromJsonObj(String jsonTxt, String key) {
+		JSONValue jsonParser = new JSONValue();
+		Map json = (Map)jsonParser.parse(new String(jsonTxt));
+		Iterator iter = json.entrySet().iterator();
+		while(iter.hasNext()){
+			Map.Entry entry = (Map.Entry)iter.next();
+			if (entry.getKey().equals(key)) {
+				return entry.getValue().toString();
+			}
+		}
+		return null;
+	}
+
+	/**
+	 * Function that add new value to JSON map
+	 * @param {String} JSON object
+	 * @param {String} key by which value should be assigned to JSON map
+	 * @param {String} value for given key
+	 * @return {String} json object with added value.
+	 */
+	public static String addValueToJsonObj(String jsonTxt, String key, String value) {
+		JSONValue jsonParser = new JSONValue();
+		JSONObject json = (JSONObject)jsonParser.parse(new String(jsonTxt));
+		json.put(key, value);
+
+		return json.toJSONString();
+	}
+
+	/**
+	 * Function that return json object represented by jsontext and included
+	 * single message assigned to "msg" key
+	 * @param {byte[]} message which should be assigned to json object
+	 * @return {byte[]} json object represented by jsontext and encodes into a sequence of bytes
+	 */
+	public static byte[] createJsonObj(byte[] msg) {
+		JSONObject obj = new JSONObject();
+		obj.put("msg", new String(msg));
+
+		return obj.toJSONString().getBytes();
+	}
+}