Remote computers found, but unable to select them (SOLVED)

[jjwhalen]

But if you can both do the following:

--SNIP--

I got curious, so I set up 3 test cases (all hosts are WinVista SP2, all BOINC clients v6.11.6):

Case 1 - Per Fred's instructions

Preconditions:
BOINC clients all running
All computers correctly listed by IP (except 'localhost') in Computers, showing status Connected
Tthrottle connect disabled on BT but Tthrottle still running on all computers
Temp display disappeared from Tasks
Tthrottle version disappeared from Computers

Action:
Scan address range

Result:
All 3 computers found
Tthrottle still Yes on Find computers
BOINC Yes absent on Find computers

Log entries:
26 August 2010 - 05:50:10 , SendRecieve ---- Recieved from Server: <TThrottle><HN:VGN-FW170J><PV 2.10><AC 0><TC 56><TG 0><NV 0><NA 0><DC 100><DG -1><CT0 55.8><CT1 56.0><GT4 0.0><GT5 0.0>
26 August 2010 - 05:50:10 , SendRecieve ---- Recieved from Server: <TThrottle><HN:Velocity_MX228><PV 2.10><AC 1><TC 62><TG 80><NV 1><NA 0><DC 100><DG 100><CT0 61.2><CT1 54.0><CT2 61.1><CT3 60.0><GT0 80.0><GT4 0.0><GT5 0.0>
26 August 2010 - 05:50:10 , SendRecieve ---- Recieved from Server: <TThrottle><HN:VGN-FZ320EB><PV 2.10><AC 1><TC 67><TG 15664056><NV 0><NA 0><DC 100><DG -1><CT0 64.7><CT1 67.2><GT4 0.0><GT5 0.0>

Case 2 - Shut down Tthrottle also

Preconditions:
Tthrottle connect disabled
Tthrottle shut down on all computers
Other preconditions as Case 1 above

Action:
Scan address range

Result:
No computers found
Tthrottle & BOINC Yes absent on Find computers


Log entries:
26 August 2010 - 06:06:38 , SendRecieve ---- Recieved from Server:
26 August 2010 - 06:06:38 , SendRecieve ---- Recieved from Server:
26 August 2010 - 06:06:39 , SendRecieve ---- Recieved from Server:

Case 3 - Bright idea eliminate the firewall/application control suite as a cause

Preconditions:
Disabled all Kaspersky Internet Security v11.0.1 protections on all computers
Other preconditions as Case 2 above

Action:
Scan address range

Result:
No computers found
Tthrottle & BOINC Yes absent on Find computers
All "Invalid Socket" (Possibly because the Windows Firewall took over from Kaspersky and slammed the door(s)?)

Log entries:
26 August 2010 - 06:51:45 4+1, Connect ---- Invalid Socket
26 August 2010 - 06:51:45 console, Connect ---- Invalid Socket
26 August 2010 - 06:51:45 dual 32, Connect ---- Invalid Socket
26 August 2010 - 06:51:46 GetUserDirectory3 ---- C:\Users\jjwhalen\AppData\Roaming\eFMer\BoincTasks
26 August 2010 - 06:51:46 GetUserDirectory3 ---- C:\Users\jjwhalen\AppData\Roaming\eFMer\BoincTasks
26 August 2010 - 06:51:46 GetUserDirectory3 ---- C:\Users\jjwhalen\AppData\Roaming\eFMer\BoincTasks
26 August 2010 - 06:51:47 console, Connect ---- Invalid Socket
26 August 2010 - 06:51:47 4+1, Connect ---- Invalid Socket
26 August 2010 - 06:51:47 dual 32, Connect ---- Invalid Socket
26 August 2010 - 06:51:51 console, Connect ---- Invalid Socket
26 August 2010 - 06:51:51 dual 32, Connect ---- Invalid Socket
26 August 2010 - 06:51:51 4+1, Connect ---- Invalid Socket
26 August 2010 - 06:51:57 4+1, Connect ---- Invalid Socket
26 August 2010 - 06:51:57 dual 32, Connect ---- Invalid Socket
26 August 2010 - 06:51:57 console, Connect ---- Invalid Socket
26 August 2010 - 06:51:58 , SendRecieve ---- Recieved from Server:
26 August 2010 - 06:51:58 , SendRecieve ---- Recieved from Server:
26 August 2010 - 06:51:58 , SendRecieve ---- Recieved from Server:
26 August 2010 - 06:51:59 , Connect ---- Invalid Socket
26 August 2010 - 06:51:59 , Connect ---- Invalid Socket
26 August 2010 - 06:51:59 , Connect ---- Invalid Socket
26 August 2010 - 06:52:03 console, Connect ---- Invalid Socket
26 August 2010 - 06:52:03 4+1, Connect ---- Invalid Socket
26 August 2010 - 06:52:03 dual 32, Connect ---- Invalid Socket
26 August 2010 - 06:52:09 dual 32, Connect ---- Invalid Socket
26 August 2010 - 06:52:09 4+1, Connect ---- Invalid Socket
26 August 2010 - 06:52:09 console, Connect ---- Invalid Socket
26 August 2010 - 06:52:15 dual 32, Connect ---- Invalid Socket
26 August 2010 - 06:52:15 4+1, Connect ---- Invalid Socket
26 August 2010 - 06:52:15 console, Connect ---- Invalid Socket
26 August 2010 - 06:52:17 GetUserDirectory3 ---- C:\Users\jjwhalen\AppData\Roaming\eFMer\BoincTasks
26 August 2010 - 06:52:17 GetUserDirectory3 ---- C:\Users\jjwhalen\AppData\Roaming\eFMer\BoincTasks
26 August 2010 - 06:52:17 GetUserDirectory3 ---- C:\Users\jjwhalen\AppData\Roaming\eFMer\BoincTasks
26 August 2010 - 06:52:17 4+1, Connect ---- Invalid Socket
26 August 2010 - 06:52:17 dual 32, Connect ---- Invalid Socket
26 August 2010 - 06:52:17 console, Connect ---- Invalid Socket

I didn't see any <boinc_gui_rpc_reply> anywhere - neither did a string search of the entire log

[fred]

I didn't see any <boinc_gui_rpc_reply> anywhere - neither did a string search of the entire log

That's not good. Do you use names or numbers for the IP. As far as I can see the first.

[jjwhalen]

I didn't see any <boinc_gui_rpc_reply> anywhere - neither did a string search of the entire log

That's not good. Do you use names or numbers for the IP. As far as I can see the first.

[duh]I knew that[/duh].  Nope, just numbers - here's a "re-read config" message stream from my localhost, with the content of remote_hosts.cfg:

console

417         8/26/2010 09:41:05   Re-reading cc_config.xml   
418         8/26/2010 09:41:05   Config: GUI RPC allowed from:   
419         8/26/2010 09:41:05   Config:   192.168.0.1   
420         8/26/2010 09:41:05   Config:   192.168.0.2   
421         8/26/2010 09:41:05   Config:   192.168.0.3   
422         8/26/2010 09:41:05   Config:   192.168.0.4   
423         8/26/2010 09:41:05   Config:   192.168.0.5   
424         8/26/2010 09:41:05   Config:   192.168.0.6   
425         8/26/2010 09:41:05   Config:   192.168.0.7   
426         8/26/2010 09:41:05   Config:   192.168.0.8   
427         8/26/2010 09:41:05   Config:   192.168.0.9   
428         8/26/2010 09:41:05   Config:   192.168.0.10   
429         8/26/2010 09:41:05   Config:   192.168.0.11   
430         8/26/2010 09:41:05   Config:   192.168.0.12   
431         8/26/2010 09:41:05   Config:   192.168.0.13   
432         8/26/2010 09:41:05   Config:   192.168.0.14   
433         8/26/2010 09:41:05   Config:   192.168.0.15   
434         8/26/2010 09:41:05   Config:   192.168.0.16   
435         8/26/2010 09:41:05   Config:   192.168.0.17   
436         8/26/2010 09:41:05   Config:   192.168.0.18   
437         8/26/2010 09:41:05   Config:   192.168.0.19   
438         8/26/2010 09:41:05   Config:   192.168.0.20   
439         8/26/2010 09:41:05   Config:   192.168.0.21   
440         8/26/2010 09:41:05   Config:   192.168.0.22   
441         8/26/2010 09:41:05   Config:   192.168.0.23   
442         8/26/2010 09:41:05   Config:   192.168.0.24   
443         8/26/2010 09:41:05   Config:   192.168.0.25   
444         8/26/2010 09:41:05   Config:   192.168.0.26   
445         8/26/2010 09:41:05   Config:   192.168.0.27   
446         8/26/2010 09:41:05   Config:   192.168.0.28   
447         8/26/2010 09:41:05   Config:   192.168.0.29   
448         8/26/2010 09:41:05   Config:   192.168.0.30   
449         8/26/2010 09:41:05   Config:   192.168.0.31   
450         8/26/2010 09:41:05   Config:   192.168.0.32   
451         8/26/2010 09:41:05   Config:   192.168.0.33   
452         8/26/2010 09:41:05   Config:   192.168.0.34   
453         8/26/2010 09:41:05   Config:   192.168.0.35   
454         8/26/2010 09:41:05   Config:   192.168.0.36   
455         8/26/2010 09:41:05   Config:   192.168.0.37   
456         8/26/2010 09:41:05   Config:   192.168.0.38   
457         8/26/2010 09:41:05   Config:   192.168.0.39   
458         8/26/2010 09:41:05   Config:   192.168.0.40   
459         8/26/2010 09:41:05   Config:   192.168.0.41   
460         8/26/2010 09:41:05   Config:   192.168.0.42   
461         8/26/2010 09:41:05   Config:   192.168.0.43   
462         8/26/2010 09:41:05   Config:   192.168.0.44   
463         8/26/2010 09:41:05   Config:   192.168.0.45   
464         8/26/2010 09:41:05   Config:   192.168.0.46   
465         8/26/2010 09:41:05   Config:   192.168.0.47   
466         8/26/2010 09:41:05   Config:   192.168.0.48   
467         8/26/2010 09:41:05   Config:   192.168.0.49   
468         8/26/2010 09:41:05   Config:   192.168.0.50   
469         8/26/2010 09:41:05   Config:   192.168.0.51   
470         8/26/2010 09:41:05   log flags: file_xfer, sched_ops, task, cpu_sched   

I got tired of dynamically assigned IPs gumming up the login works, so I assigned static IPs at the router:

IP                      DeviceName              BTComputerName                   
192.168.0.2         VELOCITY_MX228      4+1
192.168.0.3         VGN-FZ320EB           dual 32
192.168.0.7         VGN-FW170J            console   (this is the BT localhost)

The long remote_hosts.cfg is left over from the days of dynamic IPs, since I didn't want anybody to get left out - I also have a SoIP with 2 disk drives, an XBOX 360 and a PDA on my intranet.  (You see why I set static IPs to the 'computers' for BOINC login purposes )

Two questions for my own education:

• In my Case 1, should the scan show Tthrottle even though the Connect to Tthrottle option is cleared?
• Would the scan still pick up Tthrottle if its Enable BoincTasks option is cleared?

Back to you, Fred.

[fred]

I got tired of dynamically assigned IPs gumming up the login works, so I assigned static IPs at the router:

IP                      DeviceName              BTComputerName                   
192.168.0.2         VELOCITY_MX228      4+1
192.168.0.3         VGN-FZ320EB           dual 32
192.168.0.7         VGN-FW170J            console   (this is the BT localhost)

The long remote_hosts.cfg is left over from the days of dynamic IPs, since I didn't want anybody to get left out - I also have a SoIP with 2 disk drives, an XBOX 360 and a PDA on my intranet.  (You see why I set static IPs to the 'computers' for BOINC login purposes )

Two questions for my own education:

• In my Case 1, should the scan show Tthrottle even though the Connect to Tthrottle option is cleared?
• Would the scan still pick up Tthrottle if its Enable BoincTasks option is cleared?

Back to you, Fred.

The scan should show TThrottle regardless of the settings in BT.
But in TThrottle the check MUST be set otherwise nothing happens.

[RaulB]

Hi guys - I've tried everything I can think of, but no change. From the tests above, maybe I should install Throttle - any thoughts?
Following jjwhalen above, I installed Throttle on all systems
Boinc running on all systems
BThrottle running on all systems with BoincTasks enabled
BTasks only running on localhost
Find finds all Win7 systems (but not the XP system), with Throttle Yes, But no Boinc Yes. Ticking the check boxes to add a system will not hold the tick, and you cant add anything other than local hosts.
Scan finds all systems (including the XP system, where the Boinc Yes,Connected is present). Only the XP box can be added, and it works perfectly.
I am suspecting something in the Win7 Firewall or AV - where to next?

[jjwhalen]

Hi guys - I've tried everything I can think of, but no change. From the tests above, maybe I should install Throttle - any thoughts?

Raul,

I won't presume to speak for Fred while he's "out of town", but Tthrottle is a useful utility, it coexists with BoincTasks like it was designed to (because it was) and it at least works around the problem of scanning/finding computers in BoincTasks (as of the latest BT release v0.72).  That is to say BT can use the hostname returned by Tthrottle in a Find to "Add selected"  Also, you will be able to see your CPU/GPU temperatures plus throttling activity on your BT Tasks display, as an added bonus.

Tthrottle needs a bit of customizing after you install it - setting up rules for throttling etc., but not too strenuous.  One thing you must do, on the Preference tab, is to check "Enable BoincTasks" for the communication with BT to work.  (On BT's Extra>BoincTasks settings>General tab, you will find a corresponding "Connect to TThrottle" checkbox to enable completion of this link & the display of temperatures.)  Once Tthrottle is up and running with "Enable BoincTasks" checked, on the BT Find computers dialog you will see Yes in the Tthrottle column of each found computer indicating that the handshake is working.  Once a computer is added and active on the main Computers display, the Tthrottle version number (currently 2.10) will appear in the appropriate column (similar to the BOINC version number in its column) as long as BT is receiving data from it.  

Tthrottle installation/configuration is pretty straightforward, and its FAQ has good information.  But if you run into problems I'm sure you can find help in its Questions topic.

[RaulB]

Thanks JJ - I have got Throttle installed  correctly as per your instructions, and it is working well on all systems. However, it's still only the XP system that is connected to localhost. No sure what I should do next.

[jjwhalen]

Thanks JJ - I have got Throttle installed  correctly as per your instructions, and it is working well on all systems. However, it's still only the XP system that is connected to localhost. No sure what I should do next.

Well, I figured out what my problem was: I had (temporarily) installed BOINC 6.11.6(β) on all my hosts, and it wasn't responding (or incorrectly?) to the Scan or Find queries from BoincTasks.  It may be that this function isn't implemented in the beta build, though it is sending XML to BoincTasks readily enough.  I rolled all hosts back to 6.10.58 (Recommended version) and all's well now with "Yes ,Connected" or "Yes ,Password" in the BOINC column of Find computers.  I repeated Fred's debug mode test on a Scan address range and got:

27 August 2010 - 22:34:03 , SendRecieve ---- Recieved from Server: <boinc_gui_rpc_reply><unauthorized/></boinc_gui_rpc_reply>

27 August 2010 - 22:34:03 , SendRecieve ---- Recieved from Server: <boinc_gui_rpc_reply><unauthorized/></boinc_gui_rpc_reply>

27 August 2010 - 22:34:04 , SendRecieve ---- Recieved from Server: <boinc_gui_rpc_reply><unauthorized/></boinc_gui_rpc_reply>

27 August 2010 - 22:34:04 , SendRecieve ---- Recieved from Server: <TThrottle><HN:Velocity_MX228><PV 2.10><AC 1><TC 62><TG 79><NV 1><NA 0><DC 100><DG 100><CT0 61.1><CT1 54.0><CT2 59.0><CT3 61.7><GT0 79.0><GT4 0.0><GT5 0.0>
2

(Yes, only 1 host had Tthrottle running during the test.)  In other developments, I upgraded one of my remote hosts today to Windows 7.  And its BOINC client (v6.10.58) is connecting to BoincTasks without problem.  I'll be interested to know from Fred if <unauthorized> is the correct response to a Scan  Or do I still have a problem with my remote_hosts.cfg?  I look forward to BT 0.73 with the expanded logging

Add: The Find computers dialog, logs additional information in the log. (IP, BOINC reply). (done V 73 )
.

Regarding your problem, Raul, I don't know if any of that stuff helps - maybe the BOINC client version on your remotes?  I reviewed your posts above, and a few things tickled my brain:

1) If (a) you are running BoincTasks 0.72+, and (b) you have Tthrottle installed on the remotes, you should have a white checkbox and be able to tic it for an "Add selected" -- regardless of the status of the BOINC client, in either a Scan address range or a Find.

2) On the main Computers display, you should be able to do a Computer>New computer, manually enter the IP address & Password, and assign BoincTasks "nickname" (that need not match the computer's real name).  You don't need to do a scan or find for that.  (Never use an IP address for the localhost, enter only "localhost".  Also don't use the IP "alias" 127.0.0.1 - trust me, I learned that one the hard way.

3) The Password entered in the Computers tab must match that in the remote client's gui_rpc_auth.cfg file.  This is NOT the password of your account on the host computer.  Hopefully you have replaced BOINC's original randomly generated password (viz. "57e292b69fff39d4da30ab6c83c9c83e") with something you can remember, and the same one on all hosts  

4) All of Fred's advice above still applies.

5) If you do those things and still can't see your remotes in BoincTasks, I have to wonder about your connectivity.  Are all your remotes on the same subnet as localhost?  Is the subnet mask set correctly?  If not on the same subnet, does your router have a hardware firewall that might be locking off certain ports?  All the standard Network Manager-type questions in that vein.

[RaulB]

JJ amigo - I am running Boinc 6.10.56 on all my systems. BoincTasks is level 0.71, and TThrottle is 2.10.
I turned off the Win7 Firewall, and everything worked perfectly. Scan found all the Win7 systems, they were connected, Boinc Yes was seen - no problems. My XP system is running Symantec Firewall, and it's setting are obviously correct, but I can't find out what to do on the Win7 firewall settings to get WIn7 to work.
At least we now know that its not Boinc, BoincTasks or Tthrottle - is the &^*&^*% Win7 firewall.

[Corsair]

is the &^*&^*% Win7 firewall.

could you update in windows 7 firewall exceptions for TThrottle, Boinc & BoincTasks??, use to be automatic this feature, but probably you'll have to set up manually.

check if is there any other software that could do anything like fire-walling, etc. some king of old stuff from NVidia firewall in NVidia NIC.

because is really strange that, I've a mix of w7x64, wxpx32 and wxpx64 and never had the problem of the firewall each other. any case we'll try to solve your fix.

[jjwhalen]

JJ amigo - I am running Boinc 6.10.56 on all my systems. BoincTasks is level 0.71, and TThrottle is 2.10.
I turned off the Win7 Firewall, and everything worked perfectly. Scan found all the Win7 systems, they were connected, Boinc Yes was seen - no problems. My XP system is running Symantec Firewall, and it's setting are obviously correct, but I can't find out what to do on the Win7 firewall settings to get WIn7 to work.
At least we now know that its not Boinc, BoincTasks or Tthrottle - is the &^*&^*% Win7 firewall.

Hola Corsair, I've not seen you on the forum for awhile, it's good to see a post from you again.  Have you been sailing the 7 seas?

OK Raul, I'm glad you've been able to localize the problem at least.  A couple of points:

• BoincTasks 0.71 does not include the change that allows Find to use the MachineName reported by Tthrottle for Add selected - you should update to the latest version at URL BoincTasks 0.72 Beta
• BOINC 6.10.56 had issues in other areas - I'd recommend update all your hosts to 6.10.58 unless you have a specific problem with it

When you speak of the Win 7 firewall I assume you mean the built-in firewall provided by Microsoft with the OS.  I've used Kaspersky Internet Security on all my computers for awhile now, so the native firewall is turned off.  But now that I have a machine with Win 7_x64, I'll turn off Kaspersky, fall back on the system firewall, and see what I can come up with, as Corsair offered to do.  I'll get back to you on that.

[Corsair]

Hola Corsair, I've not seen you on the forum for awhile, it's good to see a post from you again.  Have you been sailing the 7 seas?

Hi jjwhalen, still at sea now at anchor in Malamocco (Venice Roads awaiting for Pilot) I had some spare time and could answer to this post.

[RaulB]

Hi guys , it's wonderful to have such support - many thanks for your efforts. Here's the latest:
1. I have upgraded all Boinc to 6.10.58
2. All the Win7 Firewalls did have entries for Boinc Manager, Boinc Tasks and Tthrottle - I didn't change anything
3. I have left Boinc Tasks at 0371 for the moment (it worked fine when I disabled the Win7 firewalls).
4. There is no other firewall present on the Win7 systems, and they are all running with MS Security Essentials
5. The problem is unchanged - the XP system & the Win7 localhost are seen, but no other Win7 systems
I'm going to bed now - will try again in the morning - Good night amigos

Sunday morning- switched off the Win7 firewall in all systems except localhosts - both Find and Scan found them all (but Find didn't find the XP system) - so it seem to be in 'incoming problem' as local hosts had no problems

In Boinc Tasks, what does a Status of 'Connected, Not Connected' mean?

[jjwhalen]

Hi guys , it's wonderful to have such support - many thanks for your efforts. Here's the latest:
1. I have upgraded all Boinc to 6.10.58
2. All the Win7 Firewalls did have entries for Boinc Manager, Boinc Tasks and Tthrottle - I didn't change anything
3. I have left Boinc Tasks at 0371 for the moment (it worked fine when I disabled the Win7 firewalls).
4. There is no other firewall present on the Win7 systems, and they are all running with MS Security Essentials
5. The problem is unchanged - the XP system & the Win7 localhost are seen, but no other Win7 systems
I'm going to bed now - will try again in the morning - Good night amigos

Sunday morning- switched off the Win7 firewall in all systems except localhosts - both Find and Scan found them all (but Find didn't find the XP system) - so it seem to be in 'incoming problem' as local hosts had no problems

In Boinc Tasks, what does a Status of 'Connected, Not Connected' mean?

Raoul,

Sorry for the delay in getting back to you.  I've gotten so used to Eugene Kaspersky's approach to security (and his GUI), that I had to go back and relearn some things about an older rule-based system like Windows Firewall.

My (remote) Win7 system is an upgrade from WinVista, and its firewall inherited settings and options learned by the earlier version (see Corsair's post about this).  So I hope your application control list looks something like mine.  With Kaspersky turned off and the Windows Firewall enabled, I was able to play around and get BOINC to work or fail to work with BoincTasks on my localhost at will.

In Control Panel>System and Security>Windows Firewall>Allowed Programs I have an entry "boinc.exe" which is of course the BOINC core client.  It is set (checked) in the Home/Work (Private) column and the left checkbox.  You said above that you have an entry for Boinc Manager, but you didn't list the core client.  It must be listed and enabled in the left checkbox for BoincTasks on another machine to communicate with it while the firewall is active.  Based on what you've said so far, this sounds like your problem.  If boinc.exe isn't listed, adding it via the Allow another program dialog is straightforward--if you don't find it in the default Programs list you can Browse to the C:\Programs\BOINC\boinc.exe and Open then Add it.  Of course if boinc.exe isn't on the allowed programs list, I don't see how it could communicate with the outside world to download work and report results

When I found boinc.exe in the Allowed programs and features list, setting the left checkbox definitely allows the communication with BoincTasks on my localhost, and resetting it broke the link.  (The same goes for Tthrottle.)

Regarding your Win XP system - I suspect that Symantec firewall (paagh!) is blocking some or all of that 'Find" query but is passing the low-level scan of the subnet.  I used to use Symantec but gave up on it ~3 years ago.  You might check it to see if port 31416 is blocked.

Regarding "Connected,Not connected" (huh?) that is a funny one.  But it means that BOINC is connected but Tthrottle isn't.  If you disable Tthrottle's link to BoincTasks at the remote machine, you'll see Connected,Not coneected (it takes awhile, ~a minute, to show up).

Something I remembered overnight: on BoincTasks Settings>Expert tab, check the "=Reconnect every xx seconds" value for something nonzero (typically 60).

Let me know how you make out with this information.  Also, another recommendation: please consider replacing the Windows 7 basic firewall with some full-featured security suite.  I won't endorse any particular one, but I've already mentioned Kaspersky Internet Security (KIS 2011); there's also ESET's NOD32, and ZoneAlarm Pro.  I will say that Kaspersky licenses up to 3 machines for the single purchase--I don't know about the other products in that respect.

[RaulB]

JJ amigo - I think you've solved the problem. Not one of my Win7 systems had Boinc client in the Firewall allowed list. I added the Boinc client and now the Scan finds the Win7 systems. The Find still has some problems, but I can live with Scan.
Many thanks for your help - you get 10 stars
One more question - all the systems that I have tested are on the same router (some via LAN and some via WiFi). Can I do the same with a system in a different location, but via the internet?
I'll certainly sleep well tonight - muchas gracias