public String readResponse(HttpResponse response) {
String output = "";
HttpEntity entity = response.getEntity();
try {
trapException(response.getStatusLine().getStatusCode());
} catch (CrowdFlowerException e1) {
e1.printStackTrace();
}
InputStream instream;
try {
instream = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(instream));
// do something useful with the response
output = output + reader.readLine();
instream.close();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return output;
}
// sends a response to the Client based upon the contents of the receive packet
private void reply(DatagramPacket receivedPacket) {
// verify the packet
byte serverMsg[] = {};
try {
Request recReq = new Request(receivedPacket.getData(), receivedPacket.getLength());
if (!recReq.isValid()) {
throw new IllegalStateException();
}
switch (recReq.getFormat()) {
case RRQ:
serverMsg = new byte[] {0, 3, 0, 1};
break;
case WRQ:
serverMsg = new byte[] {0, 4, 0, 0};
break;
default:
throw new IllegalStateException();
}
} catch (IllegalStateException e) {
e.printStackTrace();
System.exit(1);
}
DatagramPacket sendPacket =
new DatagramPacket(
serverMsg, serverMsg.length, receivedPacket.getAddress(), receivedPacket.getPort());
readSendPacket(sendPacket);
try {
// Send the datagram packet to the client via the send socket.
DatagramSocket sendSocket = new DatagramSocket();
sendSocket.send(sendPacket);
sendSocket.close();
} catch (SocketException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
System.exit(1);
}
System.out.println("Server: packet sent.\n");
}