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235 Commits

Author SHA1 Message Date
teravus
75f63ecfcd * Add a session concurrency option per key. Allows developer/config to specify number of concurrent requests on a service. 2013-10-09 22:21:25 -05:00
teravus
1df58d04b1 * Move the BasicDOSProtector.cs to OpenSim.Framework (all useful classes belong there.....) 
* Add an IsBlocked(string Key) method so it can be used more generically.   (think..   if we want to rate limit login failures, we could have a call in the Login Service to IsBlocked(uuid.ToString()) and ignore the connection if it returns true, if IsBlocked returns false, we could run the login information and if the login fails we could run the Process method to count the login failures.
 2013-10-07 23:48:24 -05:00
teravus
75fdd6054d * Refactor 
* Break out common BasicDOSProtector code into separate class.
 2013-10-07 23:19:50 -05:00
teravus
f76cc6036e * Added a Basic DOS protection container/base object for the most common HTTP Server handlers. XMLRPC Handler, GenericHttpHandler and <Various>StreamHandler 
* Applied the XmlRpcBasicDOSProtector.cs to the login service as both an example, and good practice.
* Applied the BaseStreamHandlerBasicDOSProtector.cs to the friends service as an example of the DOS Protector on StreamHandlers
* Added CircularBuffer, used for CPU and Memory friendly rate monitoring.
* DosProtector has 2 states, 1. Just Check for blocked users and check general velocity, 2. Track velocity per user,     It only jumps to 2 if it's getting a lot of requests, and state 1 is about as resource friendly as if it wasn't even there.
 2013-10-07 21:35:55 -05:00
teravus
85593d8d25 * Add an initial complete frame timeout to the WebSocket processor to make it easier to write WebSocket service code that is resistant to Denial of Service attacks. 2013-10-04 20:37:59 -05:00
Justin Clark-Casey (justincc)
42bdf44658 Bump OPenSimulator version and assembly versions up to 0.8.0 Dev 2013-10-04 23:33:47 +01:00
Aleric Inglewood
7889e7757a Don't use 'Indented' formatting for RpcXml responses. 
(cherry picked from commit 93abcde69043b175071e0bb752538d9730433f1d)
 2013-09-22 21:10:01 -05:00
Justin Clark-Casey (justincc)
77d418a36d remove mono compiler warnings from PollServiceRequestManager 2013-08-17 00:56:19 +01:00
Diva Canto
3dac92f345 Increased the rate of the PollServiceRequestManager to 0.5 secs (it was 1sec). Group chat is going over the EQ... Hopefully this won't increase CPU when there's nothing going on, but we need to watch for that. 2013-07-26 21:40:04 -07:00
Diva Canto
18d5d8f5dd Removed verbose debug from previous commit 2013-07-21 09:00:08 -07:00
Diva Canto
edafea6ae6 PollServiceRequestManager: changed the long poll from a Queue to a List. No need to dequeue and enqueue items every 1sec. 2013-07-21 08:59:48 -07:00
Diva Canto
98d47ea428 Delay the enqueueing of non-longpoll requests for 100ms. No need to have these requests actively on the processing queue if it seems they're not ready. 2013-07-21 08:57:16 -07:00
Diva Canto
b5062ae7ee Changed the timoeut of EQ 502s (no events) to 50 secs. The viewer post requests timeout in 60 secs. 
There's plenty of room for improvement in handling the EQs. Some other time...
 2013-07-18 13:30:04 -07:00
Diva Canto
552b85d33d Revert "Revert "Putting the requests back in the queue while testing for count >0 is not the smartest move..."" 
This reverts commit 7127891957.
 2013-07-18 12:25:04 -07:00
Diva Canto
9e35b069a4 Reverting the reverts I did yesterday. cpu-branch has now been 
successfully tested, and I'm merging back those changes, which proved to
be good.
Revert "Revert "Cleared up much confusion in PollServiceRequestManager. Here's the history:""

This reverts commit fa2370b32e.
 2013-07-18 12:23:27 -07:00
Diva Canto
fa2370b32e Revert "Cleared up much confusion in PollServiceRequestManager. Here's the history:" 
This reverts commit e46459ef21.
 2013-07-17 15:05:36 -07:00
Diva Canto
7127891957 Revert "Putting the requests back in the queue while testing for count >0 is not the smartest move..." 
This reverts commit f4317dc26d.
 2013-07-17 15:04:27 -07:00
Diva Canto
519dba9a69 Revert "Now trying DoubleQueue instead of BlockingQueue for the PollServiceRequestManager." 
This reverts commit 5f95f4d78e.
 2013-07-17 15:03:16 -07:00
Diva Canto
5c54eb30ed Revert "This is a completely unreasonable thing to do, effectively defying the purpose of BlockingQueues. Trying this, to see the effect on CPU." 
This reverts commit 5232ab0496.
 2013-07-17 15:02:54 -07:00
Diva Canto
5232ab0496 This is a completely unreasonable thing to do, effectively defying the purpose of BlockingQueues. Trying this, to see the effect on CPU. 2013-07-17 14:36:55 -07:00
Diva Canto
5f95f4d78e Now trying DoubleQueue instead of BlockingQueue for the PollServiceRequestManager. 2013-07-17 14:09:04 -07:00
Diva Canto
f4317dc26d Putting the requests back in the queue while testing for count >0 is not the smartest move... 2013-07-17 12:57:34 -07:00
Diva Canto
e46459ef21 Cleared up much confusion in PollServiceRequestManager. Here's the history: 
When Melanie added the web fetch inventory throttle to core, she made the long poll requests (EQs) effectively be handled on an active loop. All those requests, if they existed, were being constantly dequeued, checked for events (which most often they didn't have), and requeued again. This was an active loop thread on a 100ms cycle!
This fixes the issue. Now the inventory requests, if they aren't ready to be served, are placed directly back in the queue, but the long poll requests aren't placed there until there are events ready to be sent or timeout has been reached.
This puts the LongPollServiceWatcherThread back to 1sec cycle, as it was before.
 2013-07-17 11:19:36 -07:00
Justin Clark-Casey (justincc)
1b7b664c86 Add request received/handling stats for caps which are served by http poll handlers. 
This adds explicit cap poll handler supporting to the Caps classes rather than relying on callers to do the complicated coding.
Other refactoring was required to get logic into the right places to support this.
 2013-07-15 23:27:46 +01:00
Justin Clark-Casey (justincc)
2025dd25f6 Add missing file BaseOutputStreamHandler.cs from recent commit e19defd 2013-07-08 23:50:40 +01:00
Justin Clark-Casey (justincc)
dc54581700 Merge branch 'master' of ssh://opensimulator.org/var/git/opensim 2013-07-08 22:19:37 +01:00
Diva Canto
b2d4b8b1da BaseHttpServer: if the handler sets the content length, don't override it. This happens in HEAD handlers. 2013-07-08 14:12:11 -07:00
Justin Clark-Casey (justincc)
e19defde36 Add "show caps stats by user" and "show caps stats by cap" console commands to print various counts of capability invocation by user and by cap 
This currently prints caps requests received and handled, so that overload of received compared to handled or deadlock can be detected.
This involves making BaseStreamHandler and BaseOutputStream record the ints, which means inheritors should subclass ProcessRequest() instead of Handle()
However, existing inheriting classes overriding Handle() will still work, albeit without stats recording.
"show caps" becomes "show caps list" to disambiguate between show caps commands
 2013-07-08 22:03:07 +01:00
Justin Clark-Casey (justincc)
a33b6eed6d minor: remove mono compiler warnings in WebsocketServerHandler.cs 2013-06-20 00:54:19 +01:00
Justin Clark-Casey (justincc)
84af1cab9b Display existing statistic of how many http requests a server is making as server.network.HTTPRequestsMade in "show stats all" 2013-06-19 20:48:12 +01:00
Justin Clark-Casey (justincc)
9501a583cb Make number of inbound http requests handled available as a httpserver.<port>.IncomingHTTPRequestsProcessed stat 2013-06-18 23:07:18 +01:00
Justin Clark-Casey (justincc)
7af97f88b7 Add port numbers to poll service thread names so that we can tell which belong to which HttpServer 2013-06-10 23:39:17 +01:00
Justin Clark-Casey (justincc)
32d1e50565 Reinstate explicit starting and stopping of PollServiceRequestManager added in 3eee991 but removed in 7c0bfca 
Do not rely on destructors to stop things.
These fire at unpredictable times and cause problems such as http://opensimulator.org/mantis/view.php?id=6503
and most probably http://opensimulator.org/mantis/view.php?id=6668
 2013-06-10 23:30:35 +01:00
Melanie
75631e0267 Supply proper type information for the various types of requests 2013-06-07 23:55:03 +01:00
Melanie
7c0bfca7a0 Adding Avination's PollService to round out the HTTP inventory changes 2013-06-07 23:43:45 +01:00
teravus
d2367968e4 * In between the fog, a moment of clarity. This fixes mantis 6570 2013-04-04 19:10:23 -04:00
teravus
6e1b3f9951 *Yet another HTTPServer update code changes in OpenSim Libs. * This fixes a connection close issue by getting rid of the socket references * This adds a connection timeout checker to shutdown poor or evil connections and combats DOS attempts that just connect and make no complete requests and just wait. It also actually implements KeepAlive... instead of just understanding the connection header in the request... you can test by connecting and requesting a keepalive header and sending another request on the same connection. The new timeout checker closes expired keepalive sessions, just make sure you send the request within 70 seconds of connecting or the timeout checker will timeout the connection. 2013-03-16 03:14:11 -04:00
BlueWall
f676408e2a Merge branch 'master' of ssh://opensimulator.org/var/git/opensim 2013-03-05 15:30:54 -05:00
teravus
69fbcdf14c * Add a Max Payload size property to the Websocket Server Handler. If you would like to restrict the maximum packet size, (and therefore protect against Memory DOSing) then you should set this. I defaulted it to 40MB. This means that in theory, a malicious user could connect and send a packet that claims that the payload is up to 40 mb (even if it doesn't actually turn out to be 40mb. More testing needs to be done on it where the packets are maliciously malformed. 2013-03-05 00:04:09 -05:00
BlueWall
66d74e76b1 Add method to remove JsonRpc Handlers from the server 2013-03-03 09:40:44 -05:00
Justin Clark-Casey (justincc)
80c19b7cac Make sure we dispose of WebResponse, StreamReader and Stream in various places where we were not already. 2013-02-27 00:21:02 +00:00
Diva Canto
4779f7d7d5 Deleted all AssemblyFileVersion directives 2013-02-19 17:14:55 -08:00
teravus
c22276a169 * gracefully handle a Situation where a double close is called on the WebSocket handler 2013-02-14 18:43:53 -05:00
teravus
94a5232d3a * Adds Websocket support to baseHttpServer and IHttpServer.cs . This allows modules to set up a websocket server that websocket clients can connect to. An example module is in OptionalModules/Example/WebSocketEchoTest/WebSocketEchoModule.cs 2013-02-07 10:50:17 -05:00
teravus
4867a7cbbf This is the final commit that enables the Websocket handler 2013-02-07 10:27:18 -05:00
teravus
1dc09d8e8f We're not really done here.. but we're getting there. Socket Read is working.. Still have to do Header.ToBytes and compose a websocket frame with a payload. 2013-02-05 18:02:25 -05:00
Justin Clark-Casey (justincc)
1f1da23097 Bump version and assembly version numbers from 0.7.5 to 0.7.6 
This is mostly Bluewall's work but I am also bumping the general version number
OpenSimulator 0.7.5 remains in the release candidate stage.
I'm doing this because master is significantly adding things that will not be in 0.7.5
This update should not cause issues with existing external binary DLLs because our DLLs do not have strong names
and so the exact version match requirement is not in force.
 2013-02-05 00:23:17 +00:00
BlueWall
2841ed05cf Merge branch 'master' of /home/opensim/var/repo/opensim 2013-01-23 08:16:18 -05:00
BlueWall
1776986dc3 Add additional return status 
Adding additional return status for JsonRpcMethod. Now returns true/false
 2013-01-23 08:14:21 -05:00
Justin Clark-Casey (justincc)
3eee991935 Explicitly stop PollServiceRequestManager() rather than relying on its destructor. 
Hopes to address occasional shutdown failures from http://opensimulator.org/mantis/view.php?id=6503
 2013-01-19 02:04:36 +00:00