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If a client sends more than 100 messages in 10 seconds, give them the

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heave ho.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2960 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Michael Bayne
2004-02-21 00:52:16 +00:00
parent 461a72bd94
commit f8f4c1a611
1 changed files with 43 additions and 17 deletions
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src/java/com/threerings/presents/server/PresentsClient.java
+43 -17
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@@ -1,5 +1,5 @@
//
// $Id: PresentsClient.java,v 1.61 2003/10/25 00:01:04 mdb Exp $
// $Id: PresentsClient.java,v 1.62 2004/02/21 00:52:16 mdb Exp $
package com.threerings.presents.server;
@@ -9,6 +9,7 @@ import java.util.HashMap;
import java.util.Iterator;
import com.samskivert.util.HashIntMap;
import com.samskivert.util.Throttle;
import com.threerings.presents.Log;
import com.threerings.presents.data.ClientObject;
@@ -395,6 +396,27 @@ public class PresentsClient
_clobj = null;
}
/**
* Queues up a runnable on the object manager thread where we can
* safely end the session.
*/
protected void safeEndSession ()
{
PresentsServer.omgr.postUnit(new Runnable() {
public void run () {
if (getClientObject() == null) {
// refuse to end the session unless the client is
// fully resolved
Log.warning("Refusing logoff request from " +
"still-resolving client " + this + ".");
} else {
// end the session in a civilized manner
endSession();
}
}
});
}
/**
* This is called when the server is shut down in the middle of a
* client session. In this circumstance, {@link #endSession} will
@@ -639,6 +661,21 @@ public class PresentsClient
{
_messagesIn++; // count 'em up!
// if the client has been getting crazy with the cheeze whiz,
// stick a fork in them; the first time through we end our
// session, subsequently _throttle is null and we just drop any
// messages that come in until we've fully shutdown
if (_throttle == null) {
Log.info("Dropping message from force-quit client [conn=" + _conn +
", msg=" + message + "].");
return;
} else if (_throttle.throttleOp(message.received)) {
Log.warning("Client sent more than 100 messages in 10 seconds, " +
"forcing disconnect " + this + ".");
safeEndSession();
_throttle = null;
}
// we dispatch to a message dispatcher that is specialized for the
// particular class of message that we received
MessageDispatcher disp = (MessageDispatcher)
@@ -820,22 +857,7 @@ public class PresentsClient
public void dispatch (final PresentsClient client, UpstreamMessage msg)
{
Log.debug("Client requested logoff " + client + ".");
// queue up a runnable on the object manager thread where we
// can safely end the session
PresentsServer.omgr.postUnit(new Runnable() {
public void run () {
if (client.getClientObject() == null) {
// refuse to end the session unless the client is
// fully resolved
Log.warning("Refusing logoff request from " +
"still-resolving client " + client + ".");
} else {
// end the session in a civilized manner
client.endSession();
}
}
});
client.safeEndSession();
}
}
@@ -855,6 +877,10 @@ public class PresentsClient
* disconnected. */
protected long _networkStamp;
/** Limit the client from sending too many messages too frequently.
* 100 messages in 10 seconds and you're audi. */
protected Throttle _throttle = new Throttle(100, 10 * 1000L);
// keep these for kicks and giggles
protected int _messagesIn;
protected int _messagesOut;