build.gradle

@@ -183,7 +183,12 @@ def serverStart(String serverName) {
         writer = proc.getOutputStream().newWriter()
         writer.write("stop\n")
         writer.flush()
+        awaitClose(proc, outputThread, inputThread)
+    }
+    awaitClose(proc, outputThread, inputThread)
+}
 
+private static def awaitClose(Process proc, Thread outputThread, Thread inputThread) {
     while (proc.alive) {
         Thread.sleep(10)
     }
@@ -192,14 +197,6 @@ def serverStart(String serverName) {
     inputThread.interrupt()
 }
 
-    while (proc.alive) {
-        Thread.sleep(10)
-    }
-
-    outputThread.interrupt()
-    inputThread.interrupt()
-}
-
 def answer(String question) {
     while (System.in.available() > 0) System.in.read()
     println(question)