Added example on how send fragmented frames.

Author: Davidiusdadi

src/main/example/FragmentedFramesExample.java

@@ -0,0 +1,61 @@
+importjava.io.BufferedReader;
+importjava.io.IOException;
+importjava.io.InputStreamReader;
+importjava.net.URI;
+importjava.net.URISyntaxException;
+importjava.nio.ByteBuffer;
+
+importorg.java_websocket.WebSocket;
+importorg.java_websocket.client.WebSocketClient;
+importorg.java_websocket.drafts.Draft_17;
+importorg.java_websocket.framing.Framedata.Opcode;
+
+/**
+ * This example show how to send fragmented frames.<br>
+ * It also shows that one can mix fragmented and normal frames at will.<br>
+ * Of course one has to finish with a fragmented frame sequence before continuing with the next.
+ * 
+ * @see WebSocket#sendFragmentedFrame(Opcode, ByteBuffer, boolean)
+ **/
+publicclassFragmentedFramesExample{
+publicstaticvoidmain( String[] args ) throwsURISyntaxException , IOException , InterruptedException{
+// WebSocketImpl.DEBUG = true; // will give extra output
+
+WebSocketClientwebsocket = newExampleClient( newURI( "ws://localhost:8887" ), newDraft_17() ); // Draft_17 is implementation of rfc6455
+if( !websocket.connectBlocking() ){
+System.err.println( "Could not connect to the server." );
+return;
+ }
+
+System.out.println( "This example shows how to send fragmented(continuous) messages.\n It also shows that fragments can be intercepted by normal messages." );
+
+BufferedReaderstdin = newBufferedReader( newInputStreamReader( System.in ) );
+while ( websocket.isOpen() ){
+System.out.println( "Please type in a loooooong line(which will be send in multible parts):" );
+Stringlongline = stdin.readLine();
+ByteBufferlongelinebuffer = ByteBuffer.wrap( longline.getBytes() );
+longelinebuffer.rewind();
+
+System.out.println( "The long message you just typed in will be fragmented in messages of 2bytes payload each.\nPress enter so send the next fragemnt or make some other input to send text messages inbetween." );
+for( intposition = 2 ; position += 2 ){
+
+StringsendInOnePiece = stdin.readLine();
+if( !sendInOnePiece.isEmpty() ){
+websocket.send( sendInOnePiece );
+ }
+
+if( position < longelinebuffer.capacity() ){
+longelinebuffer.limit( position );
+websocket.sendFragmentedFrame( Opcode.TEXT, longelinebuffer, false );// when sending binary data use Opcode.BINARY
+ } else{
+longelinebuffer.limit( longelinebuffer.capacity() );
+websocket.sendFragmentedFrame( Opcode.TEXT, longelinebuffer, true );
+break;
+ }
+
+ }
+System.out.println( "You can not type in the next long message or press Ctr-C to exit." );
+ }
+System.out.println( "FragmentedFramesExample terminated" );
+ }
+}

src/main/java/org/java_websocket/drafts/Draft.java

@@ -135,8 +135,6 @@ public List<Framedata> continuousFrame( Opcode op, ByteBuffer buffer, boolean fi
 
 if( continuousFrameType != null ){
 continuousFrameType = Opcode.CONTINUOUS;
- } elseif( fin ){
-thrownewIllegalArgumentException( "There is no continious frame to continue" );
  } else{
 continuousFrameType = op;
  }