2014-11-18 22:14 GMT+03:00 Jason Ricles <jgr...@alum.lehigh.edu>:
> I am writing a websocket communication with the client and server
> endpoints both in java code (using tomcat 7.0.53 as the web server)
> When I send a text message using the
> session.getbasicremote.sendText(String) method the @Onmessage function
> is fired and everything. However I want to send binary data between
> the websockets so thus have to use
> session.getbasicremote.sendBinary(ByteBuffer). The code should then be
> read within the following method,
>
> @OnMessage
> public void recieved(ByteBuffer byteBuffer)
> {
> System.out.println(byteBuffer);
> }
>
> However the method is never fired when the message is sent (I debugged
> through both remote debugging and print statements to verify that the
> binary data is being sent also yes regular text does get sent through
> this method when binary is switched to text). Does anyone have a clue
> why this method is never being called when the data is sent from the
> other end of the websocket? Here is also the code for the part where
> the binary data is sent over the websocket. Also the @onError methods
> are in the classes and never called either.
>
> public void SendMessage() throws IOException
> {
> for(int i = 0;i<MESSAGE_SIZE;i++)
> message+='\0';
> for(int i = 0;i<ID_SIZE;i++)
> id+='\0';
> ByteBuffer bbuf = ByteBuffer.allocate(1000);
> bbuf.put(id.getBytes());
> bbuf.position(33);
> bbuf.putInt(33,length);
> bbuf.position(37);
> bbuf.put(message.getBytes());
1. I think that you are missing bbuf.flip() here.
> for(Session session : sessionList)
> session.getBasicRemote().sendBinary(bbuf);
> System.out.println("sent");
> }
>
2. There are tests for receiving binary messages in Tomcat, e.g.
test/org.apache.tomcat.websocket.TesterEchoServer class.
3. BTW, there is a typo in method name. s/recieved/received/
Best regards,
Konstantin Kolinko
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