Apache Camel - protocol buffer endpoint - apache-camel

Question

I am trying to create a camel endpoint that listens on a tcp port to receive a message encoded using protocol buffers. [https://code.google.com/p/protobuf/]
I am trying to use netty to open the tcp port but I cannot get it to work.
My camel route builder is:
from("netty:tcp://localhost:9000?sync=false").to("direct:start");
from("direct:start").unmarshal(format)
.to("log:protocolbuffers?level=DEBUG")
.to("mock:result");
I have tried the textline code, but this just causes the error com.google.protobuf.InvalidProtocolBufferException: While parsing a protocol message, the input ended unexpectedly in the middle of a field. This could mean either than the input has been truncated or that an embedded message misreported its own length.
I think I need to use a byte array codec rather than a String, but I can't see a way to do it. I think I could write a custom endpoint to do it, but I'd rather not. Any pointers would be much appreciated.
I sent the message to the camel endpoint using the code below:
public static void main(String[] args) {
try {
TestProtos.Person me = TestProtos.Person.newBuilder().setId(2).setName("Alan").build();
//set up socket
SocketChannel serverSocket;
serverSocket = SocketChannel.open();
serverSocket.socket()
.setReuseAddress(true);
serverSocket.connect(new InetSocketAddress("127.0.0.1", 9000));
serverSocket.configureBlocking(true);
//create BAOS for protobuf
ByteArrayOutputStream baos = new ByteArrayOutputStream();
//mClientDetails is a protobuf message object, dump it to the BAOS
me.writeDelimitedTo(baos);
//copy the message to a bytebuffer
ByteBuffer socketBuffer = ByteBuffer.wrap(baos.toByteArray());
//keep sending until the buffer is empty
while (socketBuffer.hasRemaining()) {
serverSocket.write(socketBuffer);
}
serverSocket.close();
} catch (Exception e) {
System.out.println("error....");
}
}
}
I also ran a test using a file endpoint which worked as expected. I created the file
with:
#Test
public void fileTest() throws Exception {
TestProtos.Person me = TestProtos.Person.newBuilder().setId(2).setName("Chris").build();
File file = new File("/tmp/test.txt");
FileOutputStream out = new FileOutputStream(file);
me.writeTo(out);
out.close();
};