Fix handling of multi-message TSIG responses (#303)

* Fix handling of multi-message TSIG responses

Closes #295
Closes #297
Closes #298
Closes #299
Closes #301

Co-authored-by: Frank Hill <frank@arin.net>
Co-authored-by: Nick Guichon <nickg@arin.net>

.gitattributes

@@ -1 +1,2 @@
 * text eol=lf
+*.bin binary

pom.xml

@@ -433,6 +433,12 @@
             <version>${vertx.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>2.15.0</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <profiles>

src/main/java/org/xbill/DNS/TCPClient.java

@@ -14,7 +14,7 @@
 import java.time.Duration;
 import java.time.temporal.ChronoUnit;
 
-final class TCPClient {
+class TCPClient implements AutoCloseable {
   private final long startTime;
   private final Duration timeout;
   private final SelectionKey key;
@@ -144,7 +144,7 @@ private void blockUntil(SelectionKey key) throws IOException {
     }
   }
 
-  void cleanup() throws IOException {
+  public void close() throws IOException {
     key.selector().close();
     key.channel().close();
   }