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Implemented new client - server handshake protocol

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- Implemented new packet types
- Changed server & client logic to use new protocol

Tags: #story[1124] (Issue 39)
This commit is contained in:
Michael Rausch
2017-08-10 19:01:30 +12:00
parent 9c79897e01
commit 09c4f98056
11 changed files with 274 additions and 111 deletions
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src/main/java/seng302/visualiser/ClientToServerThread.java
+63 -35
View File
@@ -7,6 +7,7 @@ import java.io.OutputStream;
import java.net.Socket;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
@@ -15,9 +16,12 @@ import java.util.zip.Checksum;
import javafx.application.Platform;
import javafx.scene.control.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.control.ButtonType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import seng302.gameServer.server.messages.*;
import seng302.model.stream.packets.PacketType;
import seng302.model.stream.packets.StreamPacket;
import seng302.gameServer.server.messages.BoatActionMessage;
import seng302.gameServer.server.messages.Message;
/**
* A class describing a single connection to a Server for the purposes of sending and receiving on
@@ -48,8 +52,9 @@ public class ClientToServerThread implements Runnable {
private Socket socket;
private InputStream is;
private OutputStream os;
private Logger logger = LoggerFactory.getLogger(ClientToServerThread.class);
private int clientId;
private int clientId = -1;
// private Boolean updateClient = true;
private ByteArrayOutputStream crcBuffer;
@@ -71,15 +76,8 @@ public class ClientToServerThread implements Runnable {
socket = new Socket(ipAddress, portNumber);
is = socket.getInputStream();
os = socket.getOutputStream();
Integer allocatedID = threeWayHandshake();
if (allocatedID != null) {
clientId = allocatedID;
clientLog("Successful handshake. Allocated ID: " + clientId, 1);
} else {
clientLog("Unsuccessful handshake", 1);
closeSocket();
return;
}
sendRegistrationRequest();
thread = new Thread(this);
thread.start();
@@ -128,9 +126,15 @@ public class ClientToServerThread implements Runnable {
if (streamPackets.size() > 0) {
streamPackets.add(new StreamPacket(type, payloadLength, timeStamp, payload));
} else {
streamPackets.add(new StreamPacket(type, payloadLength, timeStamp, payload));
for (ClientSocketListener csl : listeners)
csl.newPacket();
if (PacketType.RACE_REGISTRATION_RESPONSE == PacketType.assignPacketType(type, payload)){
processRegistrationResponse(new StreamPacket(type, payloadLength, timeStamp, payload));
}
else {
if (clientId == -1) continue; // Do not continue if not registered
streamPackets.add(new StreamPacket(type, payloadLength, timeStamp, payload));
for (ClientSocketListener csl : listeners)
csl.newPacket();
}
}
} else {
clientLog("Packet has been dropped", 1);
@@ -155,36 +159,60 @@ public class ClientToServerThread implements Runnable {
/**
* Listens for an allocated sourceID and returns it to the server
*
* @return the sourceID allocated to us by the server
* Sends a request to the server asking for a source ID
*/
private Integer threeWayHandshake() {
Integer ourSourceID = null;
while (true) {
try {
ourSourceID = is.read();
} catch (IOException e) {
clientLog("Three way handshake failed", 1);
}
if (ourSourceID != null) {
try {
os.write(ourSourceID);
return ourSourceID;
} catch (IOException e) {
clientLog("Three way handshake failed", 1);
return null;
}
}
private void sendRegistrationRequest() {
RegistrationRequestMessage requestMessage = new RegistrationRequestMessage(ClientType.PLAYER);
try {
os.write(requestMessage.getBuffer());
} catch (IOException e) {
logger.error("Could not send registration request. Exiting");
System.exit(1);
}
}
/**
* Accepts a response to the registration request message, and updates the client OR quits
* @param packet The registration requests packet
*/
private void processRegistrationResponse(StreamPacket packet){
int sourceId = (int) Message.bytesToLong(Arrays.copyOfRange(packet.getPayload(), 0, 3));
int statusCode = (int) Message.bytesToLong(Arrays.copyOfRange(packet.getPayload(), 4,5));
RegistrationResponseStatus status = RegistrationResponseStatus.getResponseStatus(statusCode);
if (status.equals(RegistrationResponseStatus.SUCCESS_PLAYING)){
clientId = sourceId;
return;
}
logger.error("Server Denied Connection, Exiting");
final String alertErrorText;
if (status.equals(RegistrationResponseStatus.FAILURE_FULL)){
alertErrorText = "Server is full";
}
else{
alertErrorText = "Could not connect to server";
}
Platform.runLater(() -> {
new Alert(AlertType.ERROR, alertErrorText, ButtonType.OK).showAndWait();
System.exit(1);
});
}
/**
* Send the post-start race course information
* @param boatActionMessage The message to send
*/
public void sendBoatActionMessage(BoatActionMessage boatActionMessage) {
if (clientId == -1) return;
try {
os.write(boatActionMessage.getBuffer());
} catch (IOException e) {
src/main/java/seng302/visualiser/GameClient.java
+1
View File
@@ -62,6 +62,7 @@ public class GameClient {
ioe.printStackTrace();
System.out.println("Unable to connect to host...");
}
socketThread.addStreamObserver(this::parsePackets);
LobbyController lobbyController = loadLobby();
lobbyController.setPlayerListSource(clientLobbyList);