Fix double port in config

Author: scottf

README.md

@@ -75,7 +75,7 @@ There are 3 methods available:
 static {
     NatsServerRunner.setDefaultOutputSupplier(ConsoleOutput::new);
     NatsServerRunner.setDefaultOutputLevel(Level.WARNING);
-    NatsServerRunner.setPreferredServerPath("/path/to/nats-server")
+    NatsServerRunner.setPreferredServerPath("/path/to/nats-server");
 }
 ```
 

src/main/java/io/nats/NatsRunnerUtils.java

@@ -284,9 +284,9 @@ public static List<ClusterInsert> createClusterInserts(List<ClusterNode> nodes)
         List<ClusterInsert> inserts = new ArrayList<>();
         for (ClusterNode node : nodes) {
             List<String> lines = new ArrayList<>();
-            lines.add("port:" + node.port);
+            lines.add("port: " + node.port);
             if (node.monitor != null) {
-                lines.add("http:" + node.monitor);
+                lines.add("http: " + node.monitor);
             }
             if (node.jsStoreDir != null) {
                 String dir = node.jsStoreDir.toString();

src/main/java/io/nats/NatsServerRunner.java

@@ -346,16 +346,22 @@ protected NatsServerRunner(Builder b) throws IOException {
         try {
             _configFile = File.createTempFile(CONF_FILE_PREFIX, CONF_FILE_EXT);
             BufferedWriter writer = new BufferedWriter(new FileWriter(_configFile));
+            boolean portAlreadyDone;
             if (b.configFilePath == null) {
                 _ports.put(NATS_PORT_KEY, userPort);
                 writePortLine(writer, userPort);
+                portAlreadyDone = true;
             }
             else {
                 processSuppliedConfigFile(writer, b.configFilePath);
+                portAlreadyDone = _ports.get(NATS_PORT_KEY) != -1;
             }
 
             if (b.configInserts != null) {
                 for (String s : b.configInserts) {
+                    if (portAlreadyDone && s.startsWith("port:")) {
+                        continue;
+                    }
                     writeLine(writer, s);
                 }
             }