Merge remote-tracking branch 'origin/master'

src/main/java/ch/unibas/dmi/dbis/cs108/Multiplayer/helpers/ClientPinger.java

@@ -0,0 +1,52 @@
+package ch.unibas.dmi.dbis.cs108.Multiplayer.helpers;
+
+import java.io.BufferedWriter;
+import java.io.IOException;
+
+/**
+ * Sends a ping to the server ("CPING") every 2 seconds and checks if it has gotten a pingback.
+ * The actual logging of the pingback (via the gotPingBack boolean) has to be done elsewhere,
+ * depends on how the client receives and parses messages.
+ */
+public class ClientPinger implements Runnable{
+    private boolean gotPingBack;    //should be set to true (via setGotPingBack) as soon as the client gets a pingback.
+    private boolean isConnected;    //set to true unless the ClientPinger detects a connection loss.
+    BufferedWriter out;             //the output of this client through which the pings are sent
+    public boolean isRunning;       //can be set to false to tell the ping-er to quit
+
+    /**
+     *
+     * @param out the output through which the pings are sent.
+     */
+    public ClientPinger(BufferedWriter out) {
+        gotPingBack = false;
+        isConnected = true;
+        this.out = out;
+        isRunning = true;
+    }
+
+    @Override
+    public void run() {
+        try {
+            while (isRunning) {
+                out.write("CPING");
+                Thread.sleep(2000);
+                if (!gotPingBack) isConnected = false;
+            }
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void setGotPingBack(boolean gotPingBack) {
+        this.gotPingBack = gotPingBack;
+    }
+
+    public boolean isConnected() {
+        return isConnected;
+    }
+
+
+}

src/main/java/ch/unibas/dmi/dbis/cs108/Multiplayer/helpers/ServerPinger.java

@@ -0,0 +1,52 @@
+package ch.unibas.dmi.dbis.cs108.Multiplayer.helpers;
+
+import java.io.BufferedWriter;
+import java.io.IOException;
+
+/**
+ * Sends a ping to the client ("SPING") every 2 seconds and checks if it has gotten a pingback.
+ * The actual logging of the pingback (via the gotPingBack boolean) has to be done elsewhere,
+ * depends on how the server receives and parses messages.
+ */
+public class ServerPinger implements Runnable{
+    private boolean gotPingBack;    //should be set to true (via setGotPingBack) as soon as the server gets a pingback.
+    private boolean isConnected;    //set to true unless the ServerPinger detects a connection loss.
+    BufferedWriter out;             //the output of this client through which the pings are sent
+    public boolean isRunning;       //can be set to false to tell the ping-er to quit
+
+    /**
+     *
+     * @param out the output through which the pings are sent.
+     */
+    public ServerPinger(BufferedWriter out) {
+        gotPingBack = false;
+        isConnected = true;
+        this.out = out;
+        isRunning = true;
+    }
+
+    @Override
+    public void run() {
+        try {
+            while (isRunning) {
+                out.write("SPING");
+                Thread.sleep(2000);
+                if (!gotPingBack) isConnected = false;
+            }
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void setGotPingBack(boolean gotPingBack) {
+        this.gotPingBack = gotPingBack;
+    }
+
+    public boolean isConnected() {
+        return isConnected;
+    }
+
+
+}