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  • HTTP Headers - need to check OPTIONS

    - by chris
    I've received the results of a pen test and there is some unwanted exposure in the HTTP OPTIONS where the fact that Frontpage Server Extensions was available (now removed) was reported. I need to run a check on the OPTIONS to see whether it has been removed. The test output from the report is below, I need to recreate it to establish that it has gone but don't know how to check the OPTIONS, I can only find tools that seem to check the "HEAD / HTTP/1.1". Does anyone know how to test this - I'm running a Windows environment? Many thanks OPTIONS / HTTP/1.1 Host: www.website.com HTTP/1.1 200 OK Allow: OPTIONS, TRACE, GET, HEAD Content-Length: 0 Server: Microsoft-IIS/6.0 Public: OPTIONS, TRACE, GET, HEAD, POST MS-Author-Via: MS-FP/4.0 X-Powered-By: ASP.NET MicrosoftOfficeWebServer: 5.0_Pub Date: Fri, 01 Feb 2010 16:09:15 GMT

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  • Making Windows Explorer to Search WebDAV Server using DASL

    - by user124209
    I am trying to setup search in a WebDAV repository in IIS 6 on Windows Server 2003 R2. I successfully configured WebDAV in IIS and enabled my repository indexing as described in Searching WebDAV Directories (IIS 6.0) I have verified that search is now supported by my WebDAV server, in OPTIONS request I can see DASL support: DASL: <DAV:sql> DAV: 1, 2 Public: OPTIONS, TRACE, GET, HEAD, DELETE, PUT, POST, COPY, MOVE, MKCOL, PROPFIND, PROPPATCH, LOCK, UNLOCK, SEARCH Allow: OPTIONS, TRACE, GET, HEAD, DELETE, COPY, MOVE, PROPFIND, PROPPATCH, SEARCH, MKCOL, LOCK, UNLOCK I connected to my WebDAV server from a client computer, which is Windows 8.1 and WebDAV is working well. I mounted a drive and connected using \\server@port\DawWWWRoot as described here. However my client computer, which is Windows 7, does not generate any search request. I have captured requests using Fiddler tool and found that Windows Explorer is not sending any search requests, instead it is sending a PROPFIND and downloading files. How do I make Windows Explorer to send SEARCH request to my WebDAV server?

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  • Unable to use TweetDeck on Windows due to "Ooops, TweetDeck can't find your data" and "Sorry, Adobe

    - by Matt
    I'm running Adobe AIR 1.5.2 (latest) on Windows 7 (64-bit RTM) and downloaded TweetDeck 0.31.1 (latest). When I run TweetDeck I get the following errors: Ooops, TweetDeck can't find your data and Sorry, Adobe AIR has a problem running on this computer Other AIR applications install and run fine. I've uninstalled both TweetDeck and AIR and reinstalled. Following the uninstalls I've also removed all on-disk references to both TweetDeck and AIR, but no luck. UPDATE: Using Process Monitor I did a trace of Tweetdeck from the moment it launched until the first error occurred. I saw the following information in the output of the trace: 1 5:22:18.6522338 PM TweetDeck.exe 5580 CreateFile D:\ProgramData\Microsoft\Windows\Start Menu\Programs\rs\??\d:\Use\myusername\AppData\Roaming\Adobe\AIR\ELS\TweetDeckFast.F9107117265DB7542C1A806C8DB837742CE14C21.1\PrivateEncryptedDatak NAME INVALID Desired Access: Generic Write, Read Attributes, Disposition: OverwriteIf, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, Write, AllocationSize: 0 In this trace output, Tweetdeck.exe is trying to create the file D:\ProgramData\Microsoft\Windows\Start Menu\Programs\rs\??\d:\Use\myusername\AppData\Roaming\Adobe\AIR\ELS\TweetDeckFast.F9107117265DB7542C1A806C8DB837742CE14C21.1\PrivateEncryptedDatak but the path specified is invalid. When looking at the path you can see that it is indeed an invalid path. First, there’s the “??” portion which doesn’t exist in the file system since the “?” is an invalid character in Windows/NTFS file systems. Additionally, looking at this path, it actually seems to be composed of two parts (is the "??" a delimiter?): Part 1: D:\ProgramData\Microsoft\Windows\Start Menu\Programs\rs\?? Part 2: d:\Use\myusername\AppData\Roaming\Adobe\AIR\ELS \TweetDeckFast.F9107117265DB7542C1A806C8DB837742CE14C21.1\PrivateEncryptedDatak (the problem here is that d:\Use... doesn’t even exist. What seems to be happening here is that Tweetdeck is looking for the user credentials (the “PrivateEncryptedDatak” file) but it’s looking in the wrong place, can’t find the file, and hence the error that Tweetdeck is giving (shown in the screenshot). I'm trying to determine how TweetDeck is getting this path. I searched the contents of all files on my hard disk hoping to find some TweetDeck or Adobe AIR configuration file containing this incorrect path, but I was unable to find anything. UPDATE: See Carl's comment regarding directory junctions and symbolic links under my accepted answer. This ended up being the problem. Edit by Gnoupi: People, the answer section is there to provide an actual ANSWER, not to say you have the same issue. It doesn't help anyone that you have the same problem. Eventually, if you think this is really worth mentioning, put it as a comment under the question. But simply, if what you want to add is not an answer to the question, then don't post it as an answer. This is not a forum, I recommend new users to read the FAQ: http://superuser.com/faq

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  • Remote host: can tracert, can telnet, can*not* browse: what gives?

    - by MacThePenguin
    One of my customers of the company I work for has made a change to their Internet connection, and now we can't connect to them any more from our LAN. To help me troubleshoot this issue, the network guy on the customer's site has configured their firewall so that a HTTPS connection to their public IP address is open to any IP. I should put https://<customer's IP> in my browser and get a web page. Well, it works from any network I've tried (even from my smartphone), just not from my company's LAN. I thought it may be an issue with our firewall (though I checked its rules and it allows outbound TCP port 443 to anywhere), so I just connected a PC directly to the network connection of our provider, bypassing out firewall completely, and still it didn't work (everything else worked). So I asked for help to our Internet provider's customer service, and they asked me to do a tracert to our customer's IP. The tracert is successful, as the final hop shown in the output is the host I want to reach. So they said there's no problem. :( I also tried telnet <customer's IP> 443 and that works as well: I get a blank page with the cursor blinking (I've tried using another random port and that gives me an error message, as it should). Still, from any browser of any PC in my LAN I can't open that URL. I tried checking the network traffic with Wireshark: I see the packages going through and answers coming back, thought the packets I see passing are far less than they are if I successfully connect to another HTTPS website. See the attached screenshot: I had to blur the IPs, anyway the longer string is my PC's local IP address, the shorter one is the customer's public IP. I don't know what else to try. This is the only IP doing this... Any idea what could I try to find a solution to this issue? Thanks, let me know if you need further details. Edit: when I say "it doesn't work" I mean: the page doesn't open, the browser keeps loading for a long time and eventually shows an error saying that the page cannot be opened. I'm not in my office now so I can't paste the exact message, but it's the usual message you get when the browser reaches its timeout. When I say "it works", I mean the browser loads and shows a webpage (it's the logon page for the customers' firewall admin interface: so there's the firewall brand's logo and there are fields to enter a user id and a password). Update 13/09/2012: tried again to connect to the customer's network through our Internet connection without a firewall. This is what I did: Run a Kubuntu 12.04 live distro on a spare laptop; Updated all the packages I could and installed WireShark; Attached it to my LAN and verified that I couldn't open https://<customer's IP>. Verified that the Wireshark trace for this attempt was the same as the one I've already posted; Verified that I could connect to another customer's host using rdesktop (it worked); Tried to rdesktop to <customer's IP>, here's the output: kubuntu@kubuntu:/etc$ rdesktop <customer's IP> Autoselected keyboard map en-us ERROR: recv: Connection reset by peer Disconnected the laptop from the LAN; Disconnected the firewall from the Extranet connection, connected the laptop instead. Set its network configuration so that I could access the Internet; Verified that I could connect to other websites in http and https and in RDP to other customers' hosts - it all worked as expected; Verified that I could still traceroute to <customer's IP>: I could; Verified that I still couldn't open https://<customer's IP> (same exact result as before); Checked the WireShark trace for this attempt and noticed a different behaviour: I could see packets going out to the customer's IP, but no replies at all; Tried to run rdesktop again, with a slightly different result: kubuntu@kubuntu:/etc/network$ rdesktop <customer's IP> Autoselected keyboard map en-us ERROR: <customer's IP>: unable to connect Finally gave up, put everything back as it was before, turned off the laptop and lost the WireShark traces I had saved. :( I still remember them very well though. :) Can you get anything out of it? Thank you very much. Update 12/09/2012 n.2: I followed the suggestion by MadHatter in the comments. From inside the firewall, this is what I get: user@ubuntu-mantis:~$ openssl s_client -connect <customer's IP>:443 CONNECTED(00000003) If I now type GET / the output pauses for several seconds and then I get: write:errno=104 I'm going to try the same, but bypassing the firewall, as soon as I can. Thanks. Update 12/09/2012 n.3: So, I think ISA Server is altering the results of my tests... I tried installing Wireshark directly on the firewall and monitoring the packets on the Extranet network card. When the destination is the customer's IP, whatever service I try to connect to (HTTPS, RDP or SAProuter), I can only see outbound packets and no response packets whatsoever from their side. It looks like ISA Server is "faking" the remote server's replies, that's why I get a connection using telnet or the openSSL client. This is the wireshark trace from inside our LAN: But this is the trace on the Extranet network card: This makes a bit more sense... I'll send this info to the customer's tech and see if he can make anything out of it. Thanks to all that took the time to read my question and post suggestions. I'll update this post again.

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  • What do I do when I get a Linux kernel bug?

    - by raldi
    I just bought a tiny computer called a fit-pc2 which came with a somewhat customized Ubuntu 9.10 installation. uname -a reports: Linux 2.6.31-34-fitpc2 #7 SMP Thu Apr 22 17:43:26 IDT 2010 i686 GNU/Linux It seems that after several hours of running with heavy network load, all networking ceases and I get the following in kern.log: BUG: unable to handle kernel paging request at ff09dfc0 IP: [<c0150300>] kthread_should_stop+0x10/0x20 *pde = 00000000 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb1/idVendor Modules linked in: binfmt_misc ppdev sbc_fitpc2_wdt snd_usb_audio snd_usb_lib i2c_isch sch_gpio snd_seq_dummy snd_hda_intel snd_pcm_oss snd_seq_oss snd_seq_midi snd_rawmidi snd_mixer_oss snd_seq_midi_event snd_seq snd_pcm snd_timer snd_page_alloc snd_seq_device iptable_filter ip_tables x_tables snd_hwdep lpc_sch snd psmouse rt2860sta(C) uvcvideo video pl2303 soundcore mfd_core output videodev v4l1_compat lirc_igorplugusb lirc_dev serio_raw lp parport usbhid r8169 mii iegd_mod drm agpgart Pid: 16, comm: kblockd/1 Tainted: G C (2.6.31-34-fitpc2 #7) SBC-FITPC2 EIP: 0060:[<c0150300>] EFLAGS: 00010246 CPU: 1 EIP is at kthread_should_stop+0x10/0x20 EAX: ff09dfc4 EBX: c180cbac ECX: 0109d000 EDX: f709df98 ESI: f709df98 EDI: c180cba0 EBP: f709dfb8 ESP: f709df90 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process kblockd/1 (pid: 16, ti=f709c000 task=f7084b60 task.ti=f709c000) Stack: c014c14d c180cba4 00000000 f7084b60 c0150770 f709dfa4 f709dfa4 f7023ef4 <0> c180cba0 c014c0d0 f709dfe0 c015047c 00000000 00000000 00000000 f709dfcc <0> f709dfcc c0150400 00000000 00000000 00000000 c0103ce7 f7023ef4 00000000 Call Trace: [<c014c14d>] ? worker_thread+0x7d/0xe0 [<c0150770>] ? autoremove_wake_function+0x0/0x40 [<c014c0d0>] ? worker_thread+0x0/0xe0 [<c015047c>] ? kthread+0x7c/0x90 [<c0150400>] ? kthread+0x0/0x90 [<c0103ce7>] ? kernel_thread_helper+0x7/0x10 Code: a6 8b 55 0c 8d 4d e0 89 f8 89 34 24 e8 7a fd ff ff 89 c3 eb 92 90 90 90 90 90 90 55 64 a1 00 80 76 c0 8b 80 70 02 00 00 89 e5 5d <8b> 40 fc c3 8d b6 00 00 00 00 8d bf 00 00 00 00 55 ba d7 86 62 EIP: [<c0150300>] kthread_should_stop+0x10/0x20 SS:ESP 0068:f709df90 CR2: 00000000ff09dfc0 ---[ end trace 06004df70b9cf435 ]--- BUG: unable to handle kernel paging request at ff09dfc8 IP: [<c0521bc8>] _spin_lock_irqsave+0x18/0x30 *pde = 00000000 Oops: 0002 [#2] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb1/idVendor Modules linked in: binfmt_misc ppdev sbc_fitpc2_wdt snd_usb_audio snd_usb_lib i2c_isch sch_gpio snd_seq_dummy snd_hda_intel snd_pcm_oss snd_seq_oss snd_seq_midi snd_rawmidi snd_mixer_oss snd_seq_midi_event snd_seq snd_pcm snd_timer snd_page_alloc snd_seq_device iptable_filter ip_tables x_tables snd_hwdep lpc_sch snd psmouse rt2860sta(C) uvcvideo video pl2303 soundcore mfd_core output videodev v4l1_compat lirc_igorplugusb lirc_dev serio_raw lp parport usbhid r8169 mii iegd_mod drm agpgart Pid: 16, comm: kblockd/1 Tainted: G D C (2.6.31-34-fitpc2 #7) SBC-FITPC2 EIP: 0060:[<c0521bc8>] EFLAGS: 00010086 CPU: 1 EIP is at _spin_lock_irqsave+0x18/0x30 EAX: 00000100 EBX: ff09dfc8 ECX: 00000286 EDX: ff09dfc8 ESI: f7084b60 EDI: ff09dfc4 EBP: f709dd88 ESP: f709dd88 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process kblockd/1 (pid: 16, ti=f709c000 task=f7084b60 task.ti=f709c000) Stack: f709dda4 c0127c0b 00000082 00000001 ff09dfc4 f7084b60 00000000 f709ddd0 <0> c0137fd2 00000086 f70954c4 00000000 f7098480 f709ddf0 f7094fc0 f7084b60 <0> 00000000 00000009 f709ddf0 c013c3f8 00000001 c1807c60 f709ddf0 f7084b60 Call Trace: [<c0127c0b>] ? complete+0x1b/0x60 [<c0137fd2>] ? mm_release+0x52/0xf0 [<c013c3f8>] ? exit_mm+0x18/0x110 [<c013c6db>] ? do_exit+0xfb/0x2e0 [<c013998a>] ? print_oops_end_marker+0x2a/0x30 [<c0522aab>] ? oops_end+0x8b/0xd0 [<c011eac4>] ? no_context+0xb4/0xd0 [<c011eb1d>] ? __bad_area_nosemaphore+0x3d/0x1a0 [<c0133a56>] ? load_balance_newidle+0x96/0x320 [<c011ec92>] ? bad_area_nosemaphore+0x12/0x20 [<c0524106>] ? do_page_fault+0x2f6/0x380 [<c012cc30>] ? finish_task_switch+0x50/0xe0 [<c0523e10>] ? do_page_fault+0x0/0x380 [<c0522006>] ? error_code+0x66/0x70 [<c0523e10>] ? do_page_fault+0x0/0x380 [<c0150300>] ? kthread_should_stop+0x10/0x20 [<c014c14d>] ? worker_thread+0x7d/0xe0 [<c0150770>] ? autoremove_wake_function+0x0/0x40 [<c014c0d0>] ? worker_thread+0x0/0xe0 [<c015047c>] ? kthread+0x7c/0x90 [<c0150400>] ? kthread+0x0/0x90 [<c0103ce7>] ? kernel_thread_helper+0x7/0x10 Code: 00 00 00 55 89 e5 f0 83 28 01 79 05 e8 02 ff ff ff 5d c3 55 89 c2 89 e5 9c 58 8d 74 26 00 89 c1 fa 90 8d 74 26 00 b8 00 01 00 00 <f0> 66 0f c1 02 38 e0 74 06 f3 90 8a 02 eb f6 89 c8 5d c3 90 8d EIP: [<c0521bc8>] _spin_lock_irqsave+0x18/0x30 SS:ESP 0068:f709dd88 CR2: 00000000ff09dfc8 ---[ end trace 06004df70b9cf436 ]--- Fixing recursive fault but reboot is needed! This seems to happen at least once a day. How do I even begin to debug this?

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  • What do I do when I get a Linux kernel bug?

    - by raldi
    I just bought a tiny computer called a fit-pc2 which came with a somewhat customized Ubuntu 9.10 installation. uname -a reports: Linux 2.6.31-34-fitpc2 #7 SMP Thu Apr 22 17:43:26 IDT 2010 i686 GNU/Linux It seems that after several hours of running with heavy network load, all networking ceases and I get the following in kern.log: BUG: unable to handle kernel paging request at ff09dfc0 IP: [<c0150300>] kthread_should_stop+0x10/0x20 *pde = 00000000 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb1/idVendor Modules linked in: binfmt_misc ppdev sbc_fitpc2_wdt snd_usb_audio snd_usb_lib i2c_isch sch_gpio snd_seq_dummy snd_hda_intel snd_pcm_oss snd_seq_oss snd_seq_midi snd_rawmidi snd_mixer_oss snd_seq_midi_event snd_seq snd_pcm snd_timer snd_page_alloc snd_seq_device iptable_filter ip_tables x_tables snd_hwdep lpc_sch snd psmouse rt2860sta(C) uvcvideo video pl2303 soundcore mfd_core output videodev v4l1_compat lirc_igorplugusb lirc_dev serio_raw lp parport usbhid r8169 mii iegd_mod drm agpgart Pid: 16, comm: kblockd/1 Tainted: G C (2.6.31-34-fitpc2 #7) SBC-FITPC2 EIP: 0060:[<c0150300>] EFLAGS: 00010246 CPU: 1 EIP is at kthread_should_stop+0x10/0x20 EAX: ff09dfc4 EBX: c180cbac ECX: 0109d000 EDX: f709df98 ESI: f709df98 EDI: c180cba0 EBP: f709dfb8 ESP: f709df90 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process kblockd/1 (pid: 16, ti=f709c000 task=f7084b60 task.ti=f709c000) Stack: c014c14d c180cba4 00000000 f7084b60 c0150770 f709dfa4 f709dfa4 f7023ef4 <0> c180cba0 c014c0d0 f709dfe0 c015047c 00000000 00000000 00000000 f709dfcc <0> f709dfcc c0150400 00000000 00000000 00000000 c0103ce7 f7023ef4 00000000 Call Trace: [<c014c14d>] ? worker_thread+0x7d/0xe0 [<c0150770>] ? autoremove_wake_function+0x0/0x40 [<c014c0d0>] ? worker_thread+0x0/0xe0 [<c015047c>] ? kthread+0x7c/0x90 [<c0150400>] ? kthread+0x0/0x90 [<c0103ce7>] ? kernel_thread_helper+0x7/0x10 Code: a6 8b 55 0c 8d 4d e0 89 f8 89 34 24 e8 7a fd ff ff 89 c3 eb 92 90 90 90 90 90 90 55 64 a1 00 80 76 c0 8b 80 70 02 00 00 89 e5 5d <8b> 40 fc c3 8d b6 00 00 00 00 8d bf 00 00 00 00 55 ba d7 86 62 EIP: [<c0150300>] kthread_should_stop+0x10/0x20 SS:ESP 0068:f709df90 CR2: 00000000ff09dfc0 ---[ end trace 06004df70b9cf435 ]--- BUG: unable to handle kernel paging request at ff09dfc8 IP: [<c0521bc8>] _spin_lock_irqsave+0x18/0x30 *pde = 00000000 Oops: 0002 [#2] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb1/idVendor Modules linked in: binfmt_misc ppdev sbc_fitpc2_wdt snd_usb_audio snd_usb_lib i2c_isch sch_gpio snd_seq_dummy snd_hda_intel snd_pcm_oss snd_seq_oss snd_seq_midi snd_rawmidi snd_mixer_oss snd_seq_midi_event snd_seq snd_pcm snd_timer snd_page_alloc snd_seq_device iptable_filter ip_tables x_tables snd_hwdep lpc_sch snd psmouse rt2860sta(C) uvcvideo video pl2303 soundcore mfd_core output videodev v4l1_compat lirc_igorplugusb lirc_dev serio_raw lp parport usbhid r8169 mii iegd_mod drm agpgart Pid: 16, comm: kblockd/1 Tainted: G D C (2.6.31-34-fitpc2 #7) SBC-FITPC2 EIP: 0060:[<c0521bc8>] EFLAGS: 00010086 CPU: 1 EIP is at _spin_lock_irqsave+0x18/0x30 EAX: 00000100 EBX: ff09dfc8 ECX: 00000286 EDX: ff09dfc8 ESI: f7084b60 EDI: ff09dfc4 EBP: f709dd88 ESP: f709dd88 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process kblockd/1 (pid: 16, ti=f709c000 task=f7084b60 task.ti=f709c000) Stack: f709dda4 c0127c0b 00000082 00000001 ff09dfc4 f7084b60 00000000 f709ddd0 <0> c0137fd2 00000086 f70954c4 00000000 f7098480 f709ddf0 f7094fc0 f7084b60 <0> 00000000 00000009 f709ddf0 c013c3f8 00000001 c1807c60 f709ddf0 f7084b60 Call Trace: [<c0127c0b>] ? complete+0x1b/0x60 [<c0137fd2>] ? mm_release+0x52/0xf0 [<c013c3f8>] ? exit_mm+0x18/0x110 [<c013c6db>] ? do_exit+0xfb/0x2e0 [<c013998a>] ? print_oops_end_marker+0x2a/0x30 [<c0522aab>] ? oops_end+0x8b/0xd0 [<c011eac4>] ? no_context+0xb4/0xd0 [<c011eb1d>] ? __bad_area_nosemaphore+0x3d/0x1a0 [<c0133a56>] ? load_balance_newidle+0x96/0x320 [<c011ec92>] ? bad_area_nosemaphore+0x12/0x20 [<c0524106>] ? do_page_fault+0x2f6/0x380 [<c012cc30>] ? finish_task_switch+0x50/0xe0 [<c0523e10>] ? do_page_fault+0x0/0x380 [<c0522006>] ? error_code+0x66/0x70 [<c0523e10>] ? do_page_fault+0x0/0x380 [<c0150300>] ? kthread_should_stop+0x10/0x20 [<c014c14d>] ? worker_thread+0x7d/0xe0 [<c0150770>] ? autoremove_wake_function+0x0/0x40 [<c014c0d0>] ? worker_thread+0x0/0xe0 [<c015047c>] ? kthread+0x7c/0x90 [<c0150400>] ? kthread+0x0/0x90 [<c0103ce7>] ? kernel_thread_helper+0x7/0x10 Code: 00 00 00 55 89 e5 f0 83 28 01 79 05 e8 02 ff ff ff 5d c3 55 89 c2 89 e5 9c 58 8d 74 26 00 89 c1 fa 90 8d 74 26 00 b8 00 01 00 00 <f0> 66 0f c1 02 38 e0 74 06 f3 90 8a 02 eb f6 89 c8 5d c3 90 8d EIP: [<c0521bc8>] _spin_lock_irqsave+0x18/0x30 SS:ESP 0068:f709dd88 CR2: 00000000ff09dfc8 ---[ end trace 06004df70b9cf436 ]--- Fixing recursive fault but reboot is needed! This seems to happen at least once a day. How do I even begin to debug this?

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  • Linux Kernel crash mutex_lock_slowpath "blocked for more than 120 seconds". What to do?

    - by Roddick
    I have out-of-the box Debian Lenny with non-custom kernel 2.6.26-2-amd64. Brand new server that is used to 5% of it's potential, CPU and Disk-wise. Meaning it probably not crashing because of overload. every few days it freezes with hundreds of these messages in console log: : [284847.828428] INFO: task apache2:12473 blocked for more than 120 seconds. : [284847.868468] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. : [284847.912759] apache2 D ffff8101bc6b7ab0 0 12473 14358 : [284847.912763] ffff810160d5bc50 0000000000000082 ffff8101c0002e40 0000000000000000 : [284847.912766] ffff8101a7c42950 ffff810327d92810 ffff8101a7c42bd8 0000000400000044 : [284847.912770] ffff8101c0002e40 00000000000612d0 0000000000000000 00000040000612d0 : [284847.912773] Call Trace: : [284847.912786] [<ffffffff80429b0d>] __mutex_lock_slowpath+0x64/0x9b : [284847.912790] [<ffffffff80429972>] mutex_lock+0xa/0xb : [284847.912794] [<ffffffff802a20b9>] do_lookup+0x82/0x1c1 : [284847.912800] [<ffffffff802a4271>] __link_path_walk+0x87a/0xd19 : [284847.912805] [<ffffffff80295844>] kmem_getpages+0x96/0x15f : [284847.912808] [<ffffffff80295fb7>] ____cache_alloc_node+0x6d/0x106 : [284847.912814] [<ffffffff802a4756>] path_walk+0x46/0x8b : [284847.912819] [<ffffffff802a4a82>] do_path_lookup+0x158/0x1cf : [284847.912822] [<ffffffff802a3879>] getname+0x140/0x1a7 : [284847.912827] [<ffffffff802a53f1>] __user_walk_fd+0x37/0x4c : [284847.912831] [<ffffffff8029e381>] vfs_lstat_fd+0x18/0x47 : [284847.912840] [<ffffffff8029e3c9>] sys_newlstat+0x19/0x31 : [284847.912848] [<ffffffff8020beda>] system_call_after_swapgs+0x8a/0x8f Almost all traces has __mutex_lock_slowpath as top-level. Only some has different trace: : [284847.737386] INFO: task apache2:12472 blocked for more than 120 seconds. : [284847.777551] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. : [284847.824881] apache2 D ffff8101bc6b7ab0 0 12472 14358 : [284847.824886] ffff8101b9cc1c50 0000000000000086 ffffffffa0131e0a 0000000000000002 : [284847.824889] ffff8102e7454300 ffff810324c6cad0 ffff8102e7454588 0000000000000000 : [284847.824893] 0000000000000001 0000000000000296 0000000000000003 ffff8101b9cc1c58 : [284847.824896] Call Trace: : [284847.828403] [<ffffffffa0131e0a>] :ext3:__ext3_journal_dirty_metadata+0x1e/0x46 : [284847.828412] [<ffffffff80429b0d>] __mutex_lock_slowpath+0x64/0x9b : [284847.828418] [<ffffffff80429972>] mutex_lock+0xa/0xb : [284847.828421] [<ffffffff802a20b9>] do_lookup+0x82/0x1c1 : [284847.828427] [<ffffffff802a4271>] __link_path_walk+0x87a/0xd19 : [284847.828428] [<ffffffff80271296>] find_lock_page+0x1f/0x8a : [284847.828428] [<ffffffff80273182>] filemap_fault+0x1c2/0x33c : [284847.828428] [<ffffffff802a4756>] path_walk+0x46/0x8b : [284847.828428] [<ffffffff802a4a82>] do_path_lookup+0x158/0x1cf : [284847.828428] [<ffffffff802a3879>] getname+0x140/0x1a7 : [284847.828428] [<ffffffff802a53f1>] __user_walk_fd+0x37/0x4c : [284847.828428] [<ffffffff8029e381>] vfs_lstat_fd+0x18/0x47 : [284847.828428] [<ffffffff8029e3c9>] sys_newlstat+0x19/0x31 : [284847.828428] [<ffffffff8020beda>] system_call_after_swapgs+0x8a/0x8f kernel: [1912668.466347] INFO: task apache2:17984 blocked for more than 120 seconds. [1912668.507035] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. : [1912668.555165] apache2 D ffff8101c5637ba0 0 17984 17282 : [1912668.596752] ffff810166a7dd30 0000000000000086 0000000000000000 ffff810166a7dcd8 : [1912668.643341] ffff8101c563c880 ffff81024505f000 0000000000000002 ffff810166a7dd68 : [1912668.699566] 0000000000000086 00000000000cb1a0 0000000000000000 ffff81017f344d60 : [1912668.744773] Call Trace: : [1912668.761754] [<ffffffff8022a3ed>] pick_next_task_fair+0x6e/0x7a : [1912668.829311] [<ffffffff802be0e2>] bio_alloc_bioset+0x89/0xd9 : [1912668.861930] [<ffffffff8024ac3a>] getnstimeofday+0x39/0x98 : [1912668.897005] [<ffffffff802710f6>] sync_page+0x0/0x41 : [1912668.927868] [<ffffffff80429487>] io_schedule+0x5c/0x9e : [1912668.960286] [<ffffffff80271132>] sync_page+0x3c/0x41 : [1912668.991756] [<ffffffff804295fa>] __wait_on_bit_lock+0x36/0x66 : [1912669.031757] [<ffffffff802710e3>] __lock_page+0x5e/0x64 : [1912669.064191] [<ffffffff802461d3>] wake_bit_function+0x0/0x23 : [1912669.100100] [<ffffffff80281bc5>] handle_mm_fault+0x5e4/0x8de : [1912669.134531] [<ffffffff802461a5>] autoremove_wake_function+0x0/0x2e : [1912669.174623] [<ffffffff802aa108>] fcntl_setlk+0x1cf/0x291 : [1912669.210623] [<ffffffff802461a5>] autoremove_wake_function+0x0/0x2e : [1912669.246923] [<ffffffff802a677f>] sys_fcntl+0x280/0x2f7 After googling for "mutex_lock_slowpath" I can only find the Kernel mailing list discussions that this issue was introduced in some commit. Wthout reference to verison. Discussions as recent as Jan 25, 2011. The Kernel I am using is form Debian Lenny, year ago. What should I do? Is this bug even fixed in kernel? if it's such obvious bug why it happens so rarely? Should I download latest kernel from kernel.org and upgrade? Should I use Debian backports to install new "Approved" kernel? Am I missing something? What to do?

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  • error while adding web service to server in website panel

    - by sam
    I got following error while creating website for user in website panel.I am not able to create any hosting space in server's hosting plan it is showing 0 mb space. Stack Trace: [SoapException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.UriFormatException: Invalid URI: The Authority/Host could not be parsed. at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind) at System.Uri..ctor(String uriString) at Microsoft.Web.Services3.WebServicesClientProtocol.set_Url(String value) at WebsitePanel.Server.Client.ServerProxyConfigurator.Configure(WebServicesClientProtocol proxy) at WebsitePanel.EnterpriseServer.ServiceProviderProxy.ServerInit(WebServicesClientProtocol proxy, ServerProxyConfigurator cnfg, String serverUrl, String serverPassword) at WebsitePanel.EnterpriseServer.ServiceProviderProxy.ServerInit(WebServicesClientProtocol proxy, ServerProxyConfigurator cnfg, Int32 serverId) at WebsitePanel.EnterpriseServer.ServiceProviderProxy.Init(WebServicesClientProtocol proxy, Int32 serviceId) at WebsitePanel.EnterpriseServer.WebAppGalleryController.InitFeedsByServiceId(Int32 UserId, Int32 serviceId) at WebsitePanel.EnterpriseServer.esWebApplicationGallery.GetGalleryApplicationsByServiceId(Int32 serviceId) --- End of inner exception stack trace ---] System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) +1485877 System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) +221 WebsitePanel.EnterpriseServer.esWebApplicationGallery.GetGalleryApplicationsByServiceId(Int32 serviceId) +68 WebsitePanel.Portal.WebAppGalleryHelpers.GetGalleryApplicationsByServiceId(Int32 serviceId) +31 can anybody help me in this.

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  • Tune SQL Server Express using Profiler?

    - by Glen Little
    I have a SQL Server 2005 database... a copy of it is running in development on a full version of SQL server. Another copy is running in SQL Server 2005 Express on a web server. I've used SQL Profiler and saved a Tuning trace log from activity on the SQL Express copy of the database. I want to use the saved trace log in the Database Engine Tuning Advisor... If I try when connecting the Advisor to the Express database, I am told that Express is not supported. If I try when connecting the Advisor to the SQL Server database, I get empty results. Is there any way to do this?

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  • BSOD in nltdi.sys Vista x64

    - by W1N9Zr0
    BSOD caused by NetLimiter's nltdi.sys Error codes vary, but this is pretty constant: SYMBOL_NAME: tdx!TdxSendConnection+2a0 MODULE_NAME: tdx IMAGE_NAME: tdx.sys Stack trace includes: nltdi+0x1144 example

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  • Sharing wireless internet connection between 2 Ubuntu 10.04 systems using cross-over cable

    - by Gary
    I have a Lenovo T60 with Ubuntu 10.04 connected with a cross-over cable to a Dell Vostro 1400, also running Ubuntu 10.04. My internet is coming into the Lenovo through an external wireless antennae, and I want to share the internet with the Dell. On the Lenovo: eth0 connection has IPv4 Settings 'Shared to other computers' I can ping the Dell (10.42.43.10) successfully I can use mtr to trace to www.google.com successfully On the Dell: eth0 connection has IPv4 Settings 'Automatic DHCP' I can ping the Lenovo (10.42.43.1) successfully when I use mtr to trace to www.google.com, I can only reach 10.42.43.1 I must be missing some setting, but cannot see what it is; can anyone help me?

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  • Finding spoofed IP address on network

    - by Jared
    I have a few IP spoof dropped messages coming out of my Sonicwall firewall, we'll call them Source A and Source B. Both of these sources have the same mac address indicating they're coming from the layer 3 switch behind my firewall. Source A has an ip within a valid subnet on my network and it shows up in the ARP table of my layer 3 switch. I was able to trace the exact location and fix the issue. Source B's ip however, is not within valid subnet on my network and it's not showing up in my layer 3 switches arp table. Any idea how I can trace the location of this device within my network? Thanks in advance.

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  • IIS get full error message for failed requests

    - by BetaRide
    I have IIS set-up and serving my webservice. Unfortunately if the webservice throws an exception, all I get is a blue box with the title failed request. What options do I have to actually see what went wrong? I'd prefer to get the exception message and a stack trace. I already set-up "Failed Request Tracing" but the directory remains empty. If possible I'd prefer to get the stack trace in the browser directly. Just if this matters: I have an IIS 7.5 on a Win 7 64 Pro box. The Webservice is a WCF C# project.

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  • OOF (Out of Office) is not working for remote users (Outlook Anywhere)

    - by Doughecka
    I'm not sure how long this issue has been happening, but recently a few of the remote sales users were going to a sales meeting and wanted to set their Out of Office... however in Outlook 2010, they get this error message: "Your automatic reply settings cannot be displayed because the server is currently unavailable" When I run the Exchange Remote Connectivity Analyzer, Autodiscover completes fine, but the next step fails: Exception details: Message: The request failed. The remote server returned an error: (403) Forbidden. Type: Microsoft.Exchange.WebServices.Data.ServiceRequestException Stack trace: at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.GetEwsHttpWebResponse(IEwsHttpWebRequest request) at Microsoft.Exchange.WebServices.Data.MultiResponseServiceRequest`1.Execute() at Microsoft.Exchange.WebServices.Data.ExchangeService.BindToFolder[TFolder](FolderId folderId, PropertySet propertySet) at Microsoft.Exchange.Tools.ExRca.Tests.EnsureEmptyFolderTest.PerformTestReally() Exception details: Message: The remote server returned an error: (403) Forbidden. Type: System.Net.WebException Stack trace: at System.Net.HttpWebRequest.GetResponse() at Microsoft.Exchange.WebServices.Data.EwsHttpWebRequest.Microsoft.Exchange.WebServices.Data.IEwsHttpWebRequest.GetResponse() at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.GetEwsHttpWebResponse(IEwsHttpWebRequest request) I've done some research, but I have yet to find a working fix for this... it seems like some permissions are messed up in IIS, but I haven't figured out what.

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  • Why do I see different TCP behaviour between IIS and FTP server applications on Windows 2003?

    - by rupello
    I am comparing Wireshark traces of a 10MB file download file from: the FileZilla FTP server and IIS (using HTTP) on the same Windows 2003 server. The FTP download performs faster and the trace shows the server behaving as expected, sending more data to the client with every ACK received: Link to full-size image The HTTP server trace shows a more bursty pattern. The timing of the send bursts are sometimes unrelated to any ACKs received from the client (circled in red): Link to full-size image Anyone have a suggestion as to why IIS traffic is having like this? Update: We have tried modifying the http.sys registry settings (setting MaxBytesPerSend to 256k and MaxBufferedSendBytes to 64k as recommended). Changing MaxBytesPerSend does seem to improve performance by increasing the amount of in-flight data , but we still see the same bursty pattern.

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  • Apache timeouts and error log

    - by BlackFire27
    I have an error whenever I run my code for a certain time. I use a lot of loops and sql connections. I basically, put and take out links from my database. The problem is that there is some error thrown that I cant see, whenever I execute a long sql operation .. Note that the fault isnt the code. The code runs well, whenever there are a few links involved. But when there are over 200 links.. an error is thrown that I cants see. I tried to trace the error in a few places: C:\Program Files\Zend\ZendServer\logs\php_error.log C:\Program Files\Zend\phpMyAdmin\config.inc.php Edit Viewer in win xp I am running XP: Windows xp php version: 5.3.9-ZS5.6.0. Apache/2.2.21 Apacher version: (Win32) mod_ssl/2.2.21 OpenSSL/0.9.8o I cant trace the error at all, and why it happens. All I can suspect of, is that there is a server timeout..

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  • php apache unknow 500 error

    - by JohnathanKong
    I currently have an error with my apache/php installation on a centos system. I checked the log files in /var/log/httpd and in my logs directory as specified in my virtual host file, but they are not getting populated with errors. I've also set php to log errors, through the php.ini, to the /var/log/httpd/ but the error file is not getting created. When I setup the display_errors = On in the php.ini all I get is a blank screen. this is a git controlled project that is running off of an ubuntu server that works perfectly, so there is something missing from this server. My question is, is there any way I can get more info on the error that I am getting? I just need something that I can trace back. I am using a codeigniter framework, so for me to trace through the code will take days. Thanks!

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  • connection prob

    - by user56944
    Hey guys I use Clear internet ie wireless to get my connection. I play a game online Eve Online which has had on and off CTD(crash to desktop) due to the connection timing out. Usually I have trouble only late at night after work but today I had no connection at 4 pm. They ran a trace route and Im using Ping plotter to do a trace in real time. I have 100% packet loss at hop 2 and Im getting varible loss at hop 6 at ae-72-70.ebr2.Dallas1.Level3.net Also had windows send a dump to Microsoft mentioning the eve file has a problem requiring it to close. Any thoughts ? TIA!

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  • Windows Server 2008 R2 + IIS 7.5 + ASP.NET 4.0 = HTTP Error 500.0

    - by Dave
    I am having an impossible time getting asp.net 4.0 to work in any fashion at all. In fact, I completely wiped my server, reinstalled with Server 2008 R2 Standard (running on a VMWare ESXi box, not that it should matter), and cannot even get a test .aspx page to work. Here is exactly what I did: Installed 2008 R2 Standard Activated windows and enabled Remote Desktop Installed the Web Server Role with the necessary role services(common http, asp.net, logging, tracing, management service and FTP) Enabled the management service Installed .Net Framework 4.0 via web executable Added FTP publishing to the default web site Switched default web site application pool to asp.net 4.0 (integrated) Added a 'test.aspx' file to the inetpub\wwwroot folder (contents below) Opened a browser to http://localhost/test.aspx and received a 500.0 error (also below) What am I missing? I haven't touched IIS in a while (3+ years), so it could be something stupid/trvial. Please point it out, call me a noob; my ego can take it. Thanks, Dave test.aspx <% @Page language="C# %> <html> <head> <title>Test.aspx</title> </head> <body> <asp:label runat="server" text="This is an asp.net 4.0 label" /> </body> </html> Error page: Module AspNetInitClrHostFailureModule Notification BeginRequest Handler PageHandlerFactory-Integrated-4.0 Error Code 0x80070002 Requested URL http://localhost:80/test.aspx Physical Path C:\inetpub\wwwroot\test.aspx Logon Method Not yet determined Logon User Not yet determined Trace: And in my trace file I get: 96. view trace Warning -SET_RESPONSE_ERROR_DESCRIPTION ErrorDescription An error message detailing the cause of this specific request failure can be found in the application event log of the web server. Please review this log entry to discover what caused this error to occur. 97. view trace Warning -MODULE_SET_RESPONSE_ERROR_STATUS ModuleName AspNetInitClrHostFailureModule Notification 1 HttpStatus 500 HttpReason Internal Server Error HttpSubStatus 0 ErrorCode 2147942402 ConfigExceptionInfo Notification BEGIN_REQUEST ErrorCode The system cannot find the file specified. (0x80070002) The application error log shows: Log Name: Application Source: Microsoft-Windows-IIS-W3SVC-WP Date: 5/28/2010 2:08:10 PM Event ID: 2299 Task Category: None Level: Error Keywords: Classic User: N/A Computer: win-ltfkdo1dnfp Description: An application has reported as being unhealthy. The worker process will now request a recycle. Reason given: An error message detailing the cause of this specific request failure can be found in the application event log of the web server. Please review this log entry to discover what caused this error to occur. The data is the error. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Microsoft-Windows-IIS-W3SVC-WP" Guid="{670080D9-742A-4187-8D16-41143D1290BD}" EventSourceName="W3SVC-WP" /> <EventID Qualifiers="49152">2299</EventID> <Version>0</Version> <Level>2</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2010-05-28T21:08:10.000000000Z" /> <EventRecordID>1663</EventRecordID> <Correlation /> <Execution ProcessID="0" ThreadID="0" /> <Channel>Application</Channel> <Computer>win-ltfkdo1dnfp</Computer> <Security /> </System> <EventData> <Data Name="Reason">An error message detailing the cause of this specific request failure can be found in the application event log of the web server. Please review this log entry to discover what caused this error to occur. </Data> <Binary>02000780</Binary> </EventData> </Event>

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  • GIT: clone works, remote push doesn't. Remote repository over copssh.

    - by Rui
    Hi all, I've "setup-a-msysgit-server-with-copssh-on-windows", following Tim Davis' guide and I was now learning how to use the git commands, following Jason Meridth's guide, and I have managed to get everything working fine, but now I can't pass the push command. I have set the server and the client on the same machine (for now), win7-x64. Here is some info of how things are set up: CopSSH Folder : C:/SSH/ Local Home Folder : C:/Users/rvc/ Remote Home Folder: C:/SSH/home/rvc/ # aka /cygdrive/c/SSH/home/rvc/ git remote rep : C:/SSH/home/rvc/myapp.git # empty rep At '/SSH/home/rvc/.bashrc' and 'Users/rvc/.bashrc': export HOME=/cygdrive/c/SSH/home/rvc gitpath='/cygdrive/c/Program Files (x86)/Git/bin' gitcorepath='/cygdrive/c/Program Files (x86)/Git/libexec/git-core' PATH=${gitpath}:${gitcorepath}:${PATH} So, cloning works (everything bellow is done via "Git Bash here" :P): rvc@RVC-DESKTOP /c/code $ git clone ssh://[email protected]:5858/SSH/home/rvc/myapp.git Initialized empty Git repository in C:/code/myapp/.git/ warning: You appear to have cloned an empty repository. rvc@RVC-DESKTOP /c/code $ cd myapp rvc@RVC-DESKTOP /c/code/myapp (master) $ git remote -v origin ssh://[email protected]:5858/SSH/home/rvc/myapp.git (fetch) origin ssh://[email protected]:5858/SSH/home/rvc/myapp.git (push) Then I create a file: rvc@RVC-DESKTOP /c/code/myapp (master) $ touch test.file rvc@RVC-DESKTOP /c/code/myapp (master) $ ls test.file Try to push it and get this error: rvc@RVC-DESKTOP /c/code/myapp (master) $ git add test.file rvc@RVC-DESKTOP /c/code/myapp (master) $ GIT_TRACE=1 git push origin master trace: built-in: git 'push' 'origin' 'master' trace: run_command: 'C:\Users\rvc\bin\plink.exe' '-batch' '-P' '5858' '[email protected] 68.1.65' 'git-receive-pack '\''/SSH/home/rvc/myapp.git'\''' git: '/SSH/home/rvc/myapp.git' is not a git command. See 'git --help'. fatal: The remote end hung up unexpectedly "git: '/SSH/home/rvc/myapp.git' is not a git command. See 'git --help'." .. what?! So, can anybody help? If you need any aditional information that I've missed, just ask. Thanks in advanced. EDIT: RAAAGE!! I'm having the same problem again, but now with ssh: rvc@RVC-DESKTOP /c/code/myapp (master) $ GIT_TRACE=1 git push trace: built-in: git 'push' trace: run_command: 'ssh' '-p' '5885' '[email protected]' 'git-receive-pack '\''/ SSH/home/rvc/myapp.git'\''' git: '/SSH/home/rvc/myapp.git' is not a git command. See 'git --help'. fatal: The remote end hung up unexpectedly I've tried GUI push, and shows the same message. git: '/SSH/home/rvc/myapp.git' is not a git command. See 'git --help'. Pushing to ssh://[email protected]:5885/SSH/home/rvc/myapp.git fatal: The remote end hung up unexpectedly Here's the currents .bashrc: C:\Users\rvc.bashrc (I think this is used only by cygwin/git bash): export HOME=/c/SSH/home/rvc gitpath='/c/Program Files (x86)/Git/bin' gitcorepath='/c/Program Files (x86)/Git/libexec/git-core' export GIT_EXEC_PATH=${gitcorepath} PATH=${gitpath}:${gitcorepath}:${PATH} C:\SSH\home\rvc.bashrc (.. and this is used when git connects via ssh to the "remote" server): export HOME=/c/SSH/home/rvc gitpath='/cygdrive/c/Program Files (x86)/Git/bin' gitcorepath='/cygdrive/c/Program Files (x86)/Git/libexec/git-core' export GIT_EXEC_PATH=${gitcorepath} PATH=${gitpath}:${gitcorepath}:${PATH}

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  • More localized, efficient Lowest Common Ancestor algorithm given multiple binary trees?

    - by mstksg
    I have multiple binary trees stored as an array. In each slot is either nil (or null; pick your language) or a fixed tuple storing two numbers: the indices of the two "children". No node will have only one child -- it's either none or two. Think of each slot as a binary node that only stores pointers to its children, and no inherent value. Take this system of binary trees: 0 1 / \ / \ 2 3 4 5 / \ / \ 6 7 8 9 / \ 10 11 The associated array would be: 0 1 2 3 4 5 6 7 8 9 10 11 [ [2,3] , [4,5] , [6,7] , nil , nil , [8,9] , nil , [10,11] , nil , nil , nil , nil ] I've already written simple functions to find direct parents of nodes (simply by searching from the front until there is a node that contains the child) Furthermore, let us say that at relevant times, both all trees are anywhere between a few to a few thousand levels deep. I'd like to find a function P(m,n) to find the lowest common ancestor of m and n -- to put more formally, the LCA is defined as the "lowest", or deepest node in which have m and n as descendants (children, or children of children, etc.). If there is none, a nil would be a valid return. Some examples, given our given tree: P( 6,11) # => 2 P( 3,10) # => 0 P( 8, 6) # => nil P( 2,11) # => 2 The main method I've been able to find is one that uses an Euler trace, which turns the given tree, with a node A to be the invisible parent of 0 and 1 with a depth of -1, into: A-0-2-6-2-7-10-7-11-7-2-0-3-0-A-1-4-1-5-8-5-9-5-1-A And from that, simply find the node between your given m and n that has the lowest number; For example, to find P(6,11), look for a 6 and an 11 on the trace. The number between them that is the lowest is 2, and that's your answer. If A is in between them, return nil. -- Calculating P(6,11) -- A-0-2-6-2-7-10-7-11-7-2-0-3-0-A-1-4-1-5-8-5-9-5-1-A ^ ^ ^ | | | m lowest n Unfortunately, I do believe that finding the Euler trace of a tree that can be several thousands of levels deep is a bit machine-taxing...and because my tree is constantly being changed throughout the course of the programming, every time I wanted to find the LCA, I'd have to re-calculate the Euler trace and hold it in memory every time. Is there a more memory efficient way, given the framework I'm using? One that maybe iterates upwards? One way I could think of would be the "count" the generation/depth of both nodes, and climb the lowest node until it matched the depth of the highest, and increment both until they find someone similar. But that'd involve climbing up from level, say, 3025, back to 0, twice, to count the generation, and using a terribly inefficient climbing-up algorithm in the first place, and then re-climbing back up. Are there any other better ways?

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  • Flash Mouse.hide() cmd+tab(alt+tab) bring the mouse back

    - by DickieBoy
    Having a bit of trouble with Mouse.show() and losing focus of the swf This isn't my demo: but its showing the same bug http://www.foundation-flash.com/tutorials/as3customcursors/ What i do to recreate it is: mouse over the swf, hit cmd+tab to highlight another window, result is that the mouse is not brought back and is still invisible, (to get it back go to the window bar at the top of the screen and click something). I have an area in which movement is detected and an image Things I have tried package { import flash.display.Sprite; import flash.display.MovieClip; import com.greensock.*; import flash.events.*; import flash.utils.Timer; import flash.events.TimerEvent; import flash.utils.*; import flash.ui.Mouse; public class mousey_movey extends MovieClip { public var middle_of_the_flash; //pixels per second public var speeds = [0,1,3,5,10]; public var speed; public var percentage_the_mouse_is_across_the_screen; public var mouse_over_scrollable_area:Boolean; public var image_move_interval; public function mousey_movey() { middle_of_the_flash = stage.stageWidth/2; hot_area_for_movement.addEventListener(MouseEvent.MOUSE_OVER, mouseEnter); hot_area_for_movement.addEventListener(MouseEvent.MOUSE_OUT, mouseLeave); hot_area_for_movement.addEventListener(MouseEvent.MOUSE_MOVE, mouseMove); stage.addEventListener(Event.MOUSE_LEAVE, show_mouse); stage.addEventListener(MouseEvent.MOUSE_OUT, show_mouse); stage.addEventListener(Event.DEACTIVATE,show_mouse); hot_area_for_movement.alpha=0; hot_area_for_movement.x=0; hot_area_for_movement.y=34; } public function show_mouse(e) { trace(e.type) trace('show_mouse') Mouse.show(); } public function onActivate(e) { trace('activate'); Mouse.show(); } public function onDeactivate(e) { trace('deactivate'); } public function get_speed(percantage_from_middle):int { if(percantage_from_middle > 80) { return speeds[4] } else { if(percantage_from_middle > 60) { return speeds[3] } else { if(percantage_from_middle > 40) { return speeds[2] } else { if(percantage_from_middle > 20) { return speeds[1] } else { return 0; } } } } } public function mouseLeave(e:Event):void{ Mouse.show(); clearInterval(image_move_interval); } public function mouseEnter(e:Event):void{ Mouse.hide(); image_move_interval = setInterval(moveImage,1); } public function mouseMove(e:Event):void { percentage_the_mouse_is_across_the_screen = Math.round(((middle_of_the_flash-stage.mouseX)/middle_of_the_flash)*100); speed = get_speed(Math.abs(percentage_the_mouse_is_across_the_screen)); airplane_icon.x = stage.mouseX; airplane_icon.y = stage.mouseY; } public function stageMouseMove(e:Event):void{ Mouse.show(); } public function moveImage():void { if(percentage_the_mouse_is_across_the_screen > 0) { moving_image.x+=speed; airplane_icon.scaleX = -1; } else { moving_image.x-=speed; airplane_icon.scaleX = 1; } } } } Nothing too fancy, im just scrolling an image left of right at a speed which is generated by how far you are from the middle of the stage, and making an airplane moveclip follow the mouse. The events: stage.addEventListener(Event.MOUSE_LEAVE, show_mouse); stage.addEventListener(MouseEvent.MOUSE_OUT, show_mouse); stage.addEventListener(Event.DEACTIVATE,show_mouse); All fire and work correctly when in the browser, seem a little buggy when running a test through flash, was expecting this as ive experienced it before. The deactivate call even runs when testing and cmd+tabbing but shows no mouse. Any help on the matter is appreciated Thanks, Dickie

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  • SQL SERVER – Configure Management Data Collection in Quick Steps – T-SQL Tuesday #005

    - by pinaldave
    This article was written as a response to T-SQL Tuesday #005 – Reporting. The three most important components of any computer and server are the CPU, Memory, and Hard disk specification. This post talks about  how to get more details about these three most important components using the Management Data Collection. Management Data Collection generates the reports for the three said components by default. Configuring Data Collection is a very easy task and can be done very quickly. Please note: There are many different ways to get reports generated for CPU, Memory and IO. You can use DMVs, Extended Events as well Perfmon to trace the data. Keeping the T-SQL Tuesday subject of reporting this post is created to give visual tutorial to quickly configure Data Collection and generate Reports. From Book On-Line: The data collector is a core component of the Data Collection platform for SQL Server 2008 and the tools that are provided by SQL Server. The data collector provides one central point for data collection across your database servers and applications. This collection point can obtain data from a variety of sources and is not limited to performance data, unlike SQL Trace. Let us go over the visual tutorial on how quickly Data Collection can be configured. Expand the management node under the main server node and follow the direction in the pictures. This reports can be exported to PDF as well Excel by writing clicking on reports. Now let us see more additional screenshots of the reports. The reports are very self-explanatory  but can be drilled down to get further details. Click on the image to make it larger. Well, as we can see, it is very easy to configure and utilize this tool. Do you use this tool in your organization? Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Performance, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: SQL Reporting, SQL Reports

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  • SharePoint and COMException (0x80004005): Cannot complete this action

    - by Damon
    I ran into a small issue today working on a deployment.  We were moving a custom ASP.NET control from my development environment into a SharePoint layout page on a staging environment .  I was expecting some minor issues to arise since I had developed the control in an ASP.NET website project, but after getting everything moved over we got an obscure COMException error the that looked like this: Cannot complete this action. Please try again. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Runtime.InteropServices.COMException: Cannot complete this action. [COMException (0x80004005): Cannot complete this action. .Lengthy stack trace goes here. Everything in the custom control was built using managed code, so we weren't sure why a COMException would suddenly appear. The control made use of an ITemplate to define its UI, so there was a lot of markup and binding code inside the template. As such, we started taking chunks of the template out of the layout page and eventually the error went away.  It was being caused by a section of code where we were calling a custom utility method inside some binding code: <%# WebUtility.FormatDecimal(.) %> Solution: It turns out that we were missing an Assembly and Import directive at the top of the page to let the page know where to find this method.  After adding these to the page, the error went away and everything worked great.  So a COMException (0x80004005) Cannot complete this action error is just SharePoint's friendly way of letting you know you're missing an assembly or imports reference.

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  • Troubleshooting SQL Azure Connectivity

    - by kaleidoscope
    Technorati Tags: Rituraj,Connectivity Issues with SQL Azure Troubleshooting SQL Azure Connectivity How to resolve some of the common connectivity error messages that you would see while connecting to SQL Azure A transport-level error has occurred when receiving results from the server. (Provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.) System.Data.SqlClient.SqlException: Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding. The statement has been terminated. An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections Error: Microsoft SQL Native Client: Unable to complete login process due to delay in opening server connection. A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. Some troubleshooting tips a) Verify Azure Firewall Settings and Service Availability     Reference: SQL Azure Firewall - http://msdn.microsoft.com/en-us/library/ee621782.aspx b) Verify that you can reach our Virtual IP     Reference: Telnet Troubleshooting Guide - http://technet.microsoft.com/en-us/library/cc753360(WS.10).aspx    Reference: How to Use TRACERT to Troubleshoot TCP/IP Problems in Windows - http://support.microsoft.com/kb/314868 c) Windows Firewall on the local machine     Frequently Asked Questions - http://msdn.microsoft.com/en-us/library/bb736261(VS.85).aspx     Reference: Windows Firewall with Advanced Security Getting Started Guide - http://technet.microsoft.com/en-us/library/cc748991(WS.10).aspx d) Other Firewall products     Reference: http://www.whatismyip.com/ e) Generate a Network Trace using Microsoft Network Monitor tool    Reference: How to capture network traffic with Network Monitor - http://support.microsoft.com/kb/148942 f) SQL Azure Denial of Service (DOS) Guard SQL Azure utilizes techniques to prevent denial of service attacks. If your connection is getting reset by our service due to a potential DOS attack you would  be able to see a three way handshake established and then a RESET in your network trace.

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