issue #156: ArangoDB.shutdown() now closes all connections

Author: mpv1989

ChangeLog

@@ -4,6 +4,7 @@ v4.2.5 (2017-xx-xx)
 * added ArangoDatabase.exists()
 * issue #152: added BaseDocument.setId(String)
 * added GraphCreateOptions.replicationFactor(Integer)
+* issue #156: ArangoDB.shutdown() now closes all connections 
 
 v4.2.4 (2017-09-04)
 ---------------------------

src/main/java/com/arangodb/ArangoDB.java

@@ -362,12 +362,13 @@ public synchronized ArangoDB build() {
 	}
 
 	private ArangoCursorInitializer cursorInitializer;
+	private CommunicationProtocol cp;
 
 	public ArangoDB(final VstCommunicationSync.Builder vstBuilder, final HttpCommunication.Builder httpBuilder,
 		final ArangoSerialization util, final CollectionCache collectionCache, final Protocol protocol) {
 		super(new ArangoExecutorSync(createProtocol(vstBuilder, httpBuilder, util, collectionCache, protocol), util,
 				new DocumentCache()), util);
-		final CommunicationProtocol cp = createProtocol(vstBuilder, httpBuilder, util, collectionCache, protocol);
+		cp = createProtocol(vstBuilder, httpBuilder, util, collectionCache, protocol);
 		collectionCache.init(new DBAccess() {
 			@Override
 			public ArangoDatabase db(final String name) {
@@ -405,8 +406,13 @@ protected ArangoExecutorSync executor() {
 		return executor;
 	}
 
-	public void shutdown() {
-		executor.disconnect();
+	public void shutdown() throws ArangoDBException {
+		try {
+			executor.disconnect();
+			cp.close();
+		} catch (final IOException e) {
+			throw new ArangoDBException(e);
+		}
 	}
 
 	/**