private void recv(SocketChannel sc, ClientInfo ci) throws IOException { ci.channel.read(ci.inBuf); ByteBuffer tmpBuf = ci.inBuf.duplicate(); tmpBuf.flip(); int bytesProcessed = 0; boolean doneLoop = false; while (!doneLoop) { byte b; try { b = tmpBuf.get(); } catch (BufferUnderflowException bue) { // Processed all data in buffer ci.inBuf.clear(); doneLoop = true; break; } switch (b) { case TypeServerConstants.WELCOME: bytesProcessed++; break; case TypeServerConstants.GET_STRING_REQUEST: bytesProcessed++; if (ci.outputPending) { // Client is backed up. We can't append to // the byte buffer because it's in the wrong // state. We could allocate another buffer // here and change our send method to know // about multiple buffers, but we'll just // assume that the client is dead break; } ci.outBuf.put(TypeServerConstants.GET_STRING_RESPONSE); ByteBuffer strBuf = encoder.encode(testString); ci.outBuf.putShort((short) strBuf.remaining()); ci.outBuf.put(strBuf); ci.outBuf.flip(); send(sc, ci); break; case TypeServerConstants.GET_STRING_RESPONSE: int startPos = tmpBuf.position(); try { int nBytes = tmpBuf.getInt(); byte[] buf = new byte[nBytes]; tmpBuf.get(buf); bytesProcessed += buf.length + 5; String s = new String(buf); // Send the string to the GUI break; } catch (BufferUnderflowException bue) { // Processed all available data ci.inBuf.position(ci.inBuf.position() + bytesProcessed); doneLoop = true; } break; } } }