1 Moved the stuff to trunk!

1 files changed, 69 insertions, 0 deletions

diff --git a/sources/protocols/InternalTimeSyncProtocol.java b/sources/protocols/InternalTimeSyncProtocol.java
new file mode 100644
index 0000000..48b57e0
--- /dev/null
+++ b/sources/protocols/InternalTimeSyncProtocol.java
@@ -0,0 +1,69 @@
+package protocols;
+
+import prefs.VSPrefs;
+import core.VSMessage;
+
+public class InternalTimeSyncProtocol extends VSProtocol {
+    private boolean waitingForResponse;
+
+    public InternalTimeSyncProtocol() {
+        setProtocolClassname(getClass().toString());
+
+        /* Those prefs are editable through the VSProtocol VSEditor GUI. t_min and t_max in milliseconds  */
+        setLong("t_min", 1000);
+        setLong("t_max", 5000);
+    }
+
+    protected void onClientReset() {
+    }
+
+    protected void onClientStart() {
+        waitingForResponse = true;
+
+        /* Multicast message to all processes */
+        VSMessage message = new VSMessage(getProtocolClassname());
+        message.setBoolean("isClientRequest", true);
+        sendMessage(message);
+    }
+
+    protected void onClientRecv(VSMessage recvMessage) {
+        /* Ignore all protocol messages which are not a response message, e.g. itself */
+        if (!recvMessage.getBoolean("isServerResponse"))
+            return;
+
+        if (waitingForResponse)
+            waitingForResponse = false;
+        else
+            return;
+
+        long tMax = getLong("t_max");
+        long tMin = getLong("t_min");
+        long serverTime = recvMessage.getLong("time");
+        long newTime = serverTime + (long) ((tMax + tMin) / 2 );
+
+        logg("Server Zeit: " + serverTime + "; (t_min,t_max): (" + tMin + "," + tMax
+             + "); Alte Zeit: " + process.getTime() + "; Neue Zeit: " + newTime
+             + "; Offset: " + (process.getTime() - newTime));
+
+        process.setTime(newTime);
+    }
+
+    protected void onServerReset() {
+    }
+
+    protected void onServerRecv(VSMessage recvMessage) {
+        /* Ignore all protocol messages which are not a request message, e.g. itself */
+        if (!recvMessage.getBoolean("isClientRequest"))
+            return;
+
+        /* Multicast message to all processes */
+        VSMessage message = new VSMessage(getProtocolClassname());
+        message.setLong("time", process.getTime());
+        message.setBoolean("isServerResponse", true);
+        sendMessage(message);
+    }
+
+    public String toString() {
+        return super.toString();
+    }
+}