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  • How to implement pure virtual function in C++

    - by skydoor
    Hi, I think the implementation of virtual function is talked about a lot. My question is what about pure virtual function? However it is implemented? In virtual table, how to tell it is a pure or non-pure? What the difference between pure virtual function and virtual function with implementation?

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  • Svchost.exe connecting to different IPs with remote port 445

    - by Coll911
    Im using Windows XP Professional SP2. Whenever I start my Windows, svchost.exe starts connecting to all the possible IPs on LAN like from 192.168.1.2 to 192.168.1.200. The local port ranges from 1000-1099 and the remote port being 445. After it's done with the local IPs, it starts connecting to other random IPs. I tried blocking connections to the port 445 using the local security polices but it didn't work. Is there any possible way I could prevent svchost from connecting to these IPs without involving any firewall installed? My PC slows down due to the load. I scanned my PC with MalwareBytes and found out it was infected with a worm, it's deleted now but still svchost is connecting to the IPs. I also found out that in my Windows Firewall settings, under Internet Control Message Protocol (ICMP), there's a tick on "allow incoming echo request" (usually disabled) which is locked and I can't disable it. Its description is as follows Messages sent to this computer will be repeated back to the sender. This is used for trouble shooting for e.g to ping a machine. Requests of this type are automatically allowed if TCP port 445 is enabled. Any solutions? I can't bear going with the reinstalling Windows phase again.

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  • How to implement a private virtual function within derived classes?

    - by Dane
    Hi, I know why I want to use private virtual functions, but how exactly can I implement them? For example: class Base{ [...] private: virtual void func() = 0; [...] } class Derived1: puplic Base{ void func() { //short implementation is ok here } } class Derived2: puplic Base{ void func(); //long implementation elsewhere (in cpp file) } [...] void Derived2::func() { //long implementation } The first version is ok but not always possible. Isn't the second version simply name hiding? How do you define the Base::func() of Derived2, if you cannot do it within the class declaration of Dereived2? Thanks

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  • I can't change mysql port (5.6.12) changing the lines of my.ini (windows 8)

    - by videador
    I was trying to change the port of my mysql server in my local machine but i can't. The version of mysql is 5.6.12, is an installation from wamp and I am on Windows 8. I change these lines in my my.ini file located in (C:\wamp\bin\mysql\mysql5.6.12). [client] #password = your_password port = 3307 socket = /tmp/mysql.sock [wampmysqld] port = 3307 socket = /tmp/mysql.sock key_buffer = 16M max_allowed_packet = 1M The previous values were 3306. Ok then I've reset the server installed, but it doesn't works, the mysql server is still running on 3306. Then, I rename the path of the services with this, to make sure that the my.ini is read by the mysql instance. c:\wamp\bin\mysql\mysql5.6.12\bin\mysqld.exe --defaults-file="C:\wamp\bin\mysql\mysql5.6.12\my.ini" wampmysqld But nothing, it stil doesn't works. My last bullet was to copy the content of my.ini to a file my-default.ini (a file that is placed in C:\wamp\bin\mysql\mysql5.6.12\ and that I don't know what is its mission). However it still doesn't work and the port is still 3306.

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  • Redirect traffic from 127.0.0.1 to 127.0.0.1 on port 53 to port 5300 with iptables

    - by Zagorax
    I'm running a local dns server on port 5300 to develop a software. I need my machine to use that dns but I wasn't able to tell /etc/resolv.conf to check on a different port. I searched a bit on google and I didn't find a solution. I set 127.0.0.1 as nameserver on /etc/resolv.conf. This is my whole /etc/resolv.conf: nameserver 127.0.0.1 Could you please tell me how can I redirect outbound traffic on port 53 to another port? I tried the following but it didn't work: iptables -t nat -A PREROUTING -p tcp --dport 53 -j DNAT --to 127.0.0.1:5300 iptables -t nat -A PREROUTING -p udp --dport 53 -j DNAT --to 127.0.0.1:5300 Here is the output of iptables -t nat -L -v -n (with suggested rules): Chain PREROUTING (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 0 0 REDIRECT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:53 redir ports 5300 0 0 REDIRECT udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:53 redir ports 5300 Chain POSTROUTING (policy ACCEPT 302 packets, 19213 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 302 packets, 19213 bytes) pkts bytes target prot opt in out source destination

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  • apt-get update error after removing apt-key

    - by Caterpillar
    After Running apt-get update on ubuntu 10.04 server, I found this issue, Can any help me to solve this issue. Before this I had remove apt-key. Where can I get this apt-key to add it again. apt-get update Get:1 http://security.ubuntu.com lucid-security Release.gpg [198B] Ign http://security.ubuntu.com/ubuntu/ lucid-security/main Translation-en_IN Ign http://security.ubuntu.com/ubuntu/ lucid-security/restricted Translation-en_IN Get:2 http://in.archive.ubuntu.com lucid Release.gpg [189B] Ign http://in.archive.ubuntu.com/ubuntu/ lucid/main Translation-en_IN Ign http://in.archive.ubuntu.com/ubuntu/ lucid/restricted Translation-en_IN Ign http://security.ubuntu.com/ubuntu/ lucid-security/universe Translation-en_IN Ign http://security.ubuntu.com/ubuntu/ lucid-security/multiverse Translation-en_IN Get:3 http://security.ubuntu.com lucid-security Release [44.7kB] Err http://security.ubuntu.com lucid-security Release Ign http://in.archive.ubuntu.com/ubuntu/ lucid/universe Translation-en_IN Ign http://in.archive.ubuntu.com/ubuntu/ lucid/multiverse Translation-en_IN Get:4 http://in.archive.ubuntu.com lucid-updates Release.gpg [198B] Ign http://in.archive.ubuntu.com/ubuntu/ lucid-updates/main Translation-en_IN Ign http://in.archive.ubuntu.com/ubuntu/ lucid-updates/restricted Translation-en_IN Ign http://in.archive.ubuntu.com/ubuntu/ lucid-updates/universe Translation-en_IN Ign http://in.archive.ubuntu.com/ubuntu/ lucid-updates/multiverse Translation-en_IN Hit http://in.archive.ubuntu.com lucid Release Ign http://in.archive.ubuntu.com lucid Release Get:5 http://in.archive.ubuntu.com lucid-updates Release [44.7kB] Err http://in.archive.ubuntu.com lucid-updates Release Hit http://in.archive.ubuntu.com lucid/main Packages Hit http://in.archive.ubuntu.com lucid/restricted Packages Hit http://in.archive.ubuntu.com lucid/main Sources Hit http://in.archive.ubuntu.com lucid/restricted Sources Hit http://in.archive.ubuntu.com lucid/universe Packages Hit http://in.archive.ubuntu.com lucid/universe Sources Hit http://in.archive.ubuntu.com lucid/multiverse Packages Hit http://in.archive.ubuntu.com lucid/multiverse Sources Fetched 587B in 1s (465B/s) Reading package lists... Done W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://security.ubuntu.com lucid-security Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 W: GPG error: http://in.archive.ubuntu.com lucid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://in.archive.ubuntu.com lucid-updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/lucid-security/Release W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/lucid-updates/Release W: Some index files failed to download, they have been ignored, or old ones used instead.

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  • 6to4 tunnel: cannot ping6 to ipv6.google.com?

    - by quanta
    Hi folks, Follow the Setup of 6to4 tunnel guide, I want to test ipv6 connectivity, but I cannot ping6 to ipv6.google.com. Details below: # traceroute 192.88.99.1 traceroute to 192.88.99.1 (192.88.99.1), 30 hops max, 40 byte packets 1 static.vdc.vn (123.30.53.1) 1.514 ms 2.622 ms 3.760 ms 2 static.vdc.vn (123.30.63.117) 0.608 ms 0.696 ms 0.735 ms 3 static.vdc.vn (123.30.63.101) 0.474 ms 0.477 ms 0.506 ms 4 203.162.231.214 (203.162.231.214) 11.327 ms 11.320 ms 11.312 ms 5 static.vdc.vn (222.255.165.34) 11.546 ms 11.684 ms 11.768 ms 6 203.162.217.26 (203.162.217.26) 42.460 ms 42.424 ms 42.401 ms 7 218.188.104.173 (218.188.104.173) 42.489 ms 42.462 ms 42.415 ms 8 218.189.5.10 (218.189.5.10) 42.613 ms 218.189.5.42 (218.189.5.42) 42.273 ms 42.300 ms 9 d1-26-224-143-118-on-nets.com (118.143.224.26) 205.752 ms d1-18-224-143-118-on-nets.com (118.143.224.18) 207.130 ms d1-14-224-143-118-on-nets.com (118.143.224.14) 206.970 ms 10 218.189.5.150 (218.189.5.150) 207.456 ms 206.349 ms 206.941 ms 11 * * * 12 10gigabitethernet2-1.core1.lax1.he.net (72.52.92.121) 214.087 ms 214.426 ms 214.818 ms 13 192.88.99.1 (192.88.99.1) 207.215 ms 199.270 ms 209.391 ms # ifconfig tun6to4 tun6to4 Link encap:IPv6-in-IPv4 inet6 addr: 2002:x:x::/16 Scope:Global inet6 addr: ::x.x.x.x/128 Scope:Compat UP RUNNING NOARP MTU:1480 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:11 dropped:0 overruns:0 carrier:11 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) # iptunnel sit0: ipv6/ip remote any local any ttl 64 nopmtudisc tun6to4: ipv6/ip remote any local x.x.x.x ttl 64 # ip -6 route show ::/96 via :: dev tun6to4 metric 256 expires 21332777sec mtu 1480 advmss 1420 hoplimit 4294967295 2002::/16 dev tun6to4 metric 256 expires 21332794sec mtu 1480 advmss 1420 hoplimit 4294967295 fe80::/64 dev eth0 metric 256 expires 15674592sec mtu 1500 advmss 1440 hoplimit 4294967295 fe80::/64 dev eth1 metric 256 expires 15674597sec mtu 1500 advmss 1440 hoplimit 4294967295 fe80::/64 dev tun6to4 metric 256 expires 21332794sec mtu 1480 advmss 1420 hoplimit 4294967295 default via ::192.88.99.1 dev tun6to4 metric 1 expires 21332861sec mtu 1480 advmss 1420 hoplimit 4294967295 # ping6 -n -c 4 ipv6.google.com PING ipv6.google.com(2404:6800:8005::68) 56 data bytes From 2002:x:x:: icmp_seq=0 Destination unreachable: Address unreachable From 2002:x:x:: icmp_seq=1 Destination unreachable: Address unreachable From 2002:x:x:: icmp_seq=2 Destination unreachable: Address unreachable From 2002:x:x:: icmp_seq=3 Destination unreachable: Address unreachable --- ipv6.google.com ping statistics --- 4 packets transmitted, 0 received, +4 errors, 100% packet loss, time 2999ms What is my problem? Thanks,

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  • Some emails are being delivered, some returned

    - by Tom Broucke
    I have my own VPS where a site is running (control panel: directadmin). When I send mails, some are being delivered (hotmail, gmail, me@somedomain.com ,...), others are not ([email protected]), others are delivered after being greylisted ([email protected]). /var/log/exim/mainlog What could be the cause of this? Is the problem Sender-Side or Receiver-Side? case 1: me@somedomain.com (delivered) 2012-06-20 15:02:03 1ShKXr-0005Sc-7g <= fiveyears@mydomain.com U=apache P=local S=1319 T="Password reset" from <[email protected]> for me@somedomain.com 2012-06-20 15:02:03 1ShKXr-0005Sc-7g gmail-smtp-in-v4v6.l.google.com [2a00:1450:8005::1b] Network is unreachable 2012-06-20 15:02:03 1ShKXr-0005Sc-7g => me@somedomain.com F=<[email protected]> R=lookuphost T=remote_smtp S=1355 H=gmail-smtp-in-v4v6.l.google.com [173.194.67.27] X=TLSv1:RC4-SHA:128 C="250 2.0.0 OK 1340196103 cp4si34336466wib.14" 2012-06-20 15:02:03 1ShKXr-0005Sc-7g Completed case 2: me@somedomain2.com (not being delivered) 2012-06-21 09:57:14 1ShcGQ-0007No-5H <= info@mydomain.com H=localhost ([91.230.245.141]) [127.0.0.1] P=esmtpa A=login:info@mydomain.com S=740 [email protected] T="hey" from <[email protected]> for me@somedomain2.com 2012-06-21 09:57:14 1ShcGQ-0007No-5H ** me@somedomain2.com F=<[email protected]> R=virtual_aliases: 2012-06-21 09:57:14 1ShcGQ-0007Nt-7Z <= <> R=1ShcGQ-0007No-5H U=mail P=local S=1546 T="Mail delivery failed: returning message to sender" from <> for info@mydomain.com 2012-06-21 09:57:14 1ShcGQ-0007No-5H Completed 2012-06-21 09:57:14 1ShcGQ-0007Nt-7Z => info <[email protected]> F=<> R=virtual_user T=virtual_localdelivery S=1643 2012-06-21 09:57:14 1ShcGQ-0007Nt-7Z Completed case 3: me@somedomain3.com (greylisted) 2012-06-21 15:29:02 1ShhRW-000862-BV <= info@mydomain.com H=localhost ([91.230.245.141]) [127.0.0.1] P=esmtpa A=login:info@mydomain.com S=782 [email protected] T="testmail squirrel" from <[email protected]> for me@somedomain3.com 2012-06-21 15:29:02 1ShhRW-000862-BV SMTP error from remote mail server after RCPT TO:<[email protected]>: host mx-cluster-b1.one.com [195.47.247.194]: 450 4.7.1 <[email protected]>: Recipient address rejected: Greylisted for 5 minutes 2012-06-21 15:29:02 1ShhRW-000862-BV == me@somedomain3.com R=lookuphost T=remote_smtp defer (-44): SMTP error from remote mail server after RCPT TO:<[email protected]>: host mx-cluster-b2.one.com [195.47.247.195]: 450 4.7.1 <[email protected]>: Recipient address rejected: Greylisted for 5 minutes Notice that the "from" in case1 differs in case2: fiveyears@mydomain.com or info@mydomain.com. Thanks for your time!

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  • Apache Virtual host points to main domain

    - by user37143
    Listen 80 ServerName www.mydomain.com:80 DocumentRoot "/www/tomcat/webapps" Options Indexes FollowSymLinks Order allow,deny Allow from all Options ExecCGI NameVirtualHost *:80 ServerName blog.mydomain.com DocumentRoot /www/blog DirectoryIndex index.php index.html Options All AllowOverride All Allow from all on ssl.conf I have: *Listen 443 * Now if I access mydomain.com or blog.mydomain.com both are forwarded to /www/tomcat/webapps any idea where I went wrong? I have source complied Apache2. Should I add a virtual for the mydomain.com too? Thanks, Anpl

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  • Resolving ambiguous this pointer in C++

    - by Paul Tevis
    I'm trying to derive a new class from an old one. The base class declaration looks like this: class Driver : public Plugin, public CmdObject { protected: Driver(); public: static Driver* GetInstance(); virtual Engine& GetEngine(); public: // Plugin methods... virtual bool InitPlugin (Mgr* pMgr); virtual bool Open(); virtual bool Close(); // CmdObject virtual bool ExecObjCmd(uint16 cmdID, uint16 nbParams, CommandParam *pParams, CmdChannelError& error); Mgr *m_pMgr; protected: Services *m_pServices; Engine m_Engine; }; Its constructor looks like this: Driver::Driver() : YCmdObject("Driver", (CmdObjectType)100, true), m_Engine("MyEngine") { Services *m_pServices = NULL; Mgr *m_pMgr = NULL; } So when I created my derived class, I first tried to simply inherit from the base class: class NewDriver : public Driver and copy the constructor: NewDriver::NewDriver() : CmdObject("NewDriver", (EYCmdObjectType)100, true), m_Engine("MyNewEngine") { Services *m_pServices = NULL; Mgr *m_pMgr = NULL; } The compiler (VisualDSP++ 5.0 from Analog Devices) didn't like this: ".\NewDriver.cpp", line 10: cc0293: error: indirect nonvirtual base class is not allowed CmdObject("NewDriver", (EYCmdObjectType)100, true), That made sense, so I decided to directly inherit from Plugin and CmdObject. To avoid multiple inheritance ambiguity problems (so I thought), I used virtual inheritance: class NewDriver : public Driver, public virtual Plugin, public virtual CmdObject But then, in the implementation of a virtual method in NewDriver, I tried to call the Mgr::RegisterPlugin method that takes a Plugin*, and I got this: ".\NewDriver.cpp", line 89: cc0286: error: base class "Plugin" is ambiguous if (!m_pMgr->RegisterPlugin(this)) How is the this pointer ambiguous, and how do I resolve it? Thanks, --Paul

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  • XNA Notes 007

    - by George Clingerman
    Every week I keep wondering if there’s going to be enough activity in the community to keep doing these notes on a weekly basis and every week I’m reminded of just how awesome and active the XNA community is. There’s engines being made, tutorials being created, games being crafted. There’s information being shared, questions being answered and then there’s another whole community around the Xbox LIVE Indie Games themselves. It’s really incredibly to just watch all that’s going on and I’m glad I’m playing a small part in all of this. So here’s what I noticed happening in the XNA community last week. If there’s things I’m missing, always feel free to let me know. I love learning about new corners of the XNA community that I wasn’t aware of or just have been missing! XNA Developers: Uditha Bandara held an XNA Game Development Workshops at Singapore Universities http://uditha.wordpress.com/2011/02/18/xna-game-development-workshops-at-singapore-universities-event-update/ Binary Tweed gives his talks about Indie City and gives his opinion on the false promise of digital distribution http://www.develop-online.net/news/37053/OPINION-The-false-promise-of-digital-distribution Kris Steele posts his Trivia or Die postmortem http://www.krissteele.net/blogdetails.aspx?id=246 @MadNinjaSkills (James Johnston) posts his feelings on testing for XBLIG http://www.ezmuze.co.uk/101 Simon (@DDReaper) posts hints and tips for XNA developers to help get the size of their projects down http://twitter.com/#!/DDReaper/status/38279440924545024 http://xna-uk.net/blogs/darkgenesis/archive/2011/02/17/look-at-the-size-of-that-thing.aspx Michael B. McLaughlin proving why he should be an XNA MVP posts the list of commonly used value types in XNA games http://geekswithblogs.net/mikebmcl/archive/2011/02/17/list-of-commonly-used-value-types-in-xna-games.aspx http://twitter.com/#!/mikebmcl/status/38166541354811392 Paul Powell (@ITSligoPaul) posts about a common sprite batch as a game service http://itspaulsblog.blogspot.com/2011/02/xna-common-sprite-batch-as-game-service.html @SigilXNA (John Defenbaugh) posts his new level editor video for the sequel to Opac’s Journey http://twitter.com/SigilXNA/statuses/36548174373982209 http://twitter.com/#!/SigilXNA/status/36548174373982209 http://youtu.be/QHbmxB_2AW8 @jwatte updates kW Animation for XNA 4.0 http://www.enchantedage.com/xna-animation @DSebJ posts Blender to SunBurn http://twitter.com/#!/DSebJ/status/36564920224976896 http://dsebj.evolvingsoftware.com/?p=187 Ads and WP7 Games - @mechaghost shares his revenue data for his ad based games http://www.occasionalgamer.com/2011/02/09/ads-and-wp7-games/ Xbox LIVE Indie Games (XBLIG): Steven Hurdle posts day 100 of his quest to find a fantastic XBLIG purchase every day http://writingsofmassdeduction.com/2011/02/17/day-100-radiangames-ballistic/ Xbox 360 Indie Game Buying Guide - 12 games for $60 including several Xbox LIVE Indie games! (although if the XNA community was asked we could have recommended 60 games for $60...) http://www.indiegamemag.com/xbox360-indie-games-buying-guide/ The best selling Xbox LIVE Indie games of 2010 http://www.1up.com/news/xbox-live-most-popular-games I’d buy that for a dollar! - the California Literary Review points out a few gems on the XBLIG marketplace (and other places) where you can game on the cheap. http://calitreview.com/14125 Armless Octopus Episode 39 - The Indie Gem Octocast http://www.armlessoctopus.com/2011/02/17/armless-octocast-episode-39-the-indie-gem-octocast/ Ska Studios posts a plethora of updates http://www.ska-studios.com/2011/02/11/good-morning-gato-49/ http://www.ska-studios.com/2011/02/14/vampire-smile-valentines/ http://www.ska-studios.com/2011/02/16/the-dishwasher-vs-finds-a-home/ Kotaku posts about the Xbox LIVE Indie Game that makes you go Pew Pew Pew Pew Pew Pew http://kotaku.com/#!5760632/the-game-that-makes-you-go-pew-pew-pew-pew-pew-pew-pew GameMarx continues to be active and doing a ton for the XBLIG community reviews and Top 5 indie games of the week 2/4-2/10 http://www.gamemarx.com/video/the-show/22/ep-9-february-11-2010.aspx a new podcast Xbox Indie New Releases http://twitter.com/#!/gamemarx/status/36888849107910656 http://www.gamemarx.com/news/2011/02/13/a-new-podcast-xbox-indie-new-releases.aspx @MasterBlud uploads Indocalypse XBLIG Collections #2 http://www.youtube.com/watch?v=uzCZSv075mc&feature=youtu.be&a http://twitter.com/#!/MasterBlud/status/37100029697064960 Just Press Start interviews Michael Hicks from MichaelArts, 18 year old creator of Honor in Vengeance http://justpressstart.net/?p=465 Achievement Locked interviews Kris Steele of FunInfused Games http://xboxindies.wordpress.com/2011/02/11/interview-fun-infused-games/ XNA Game Development: XNA -UK launches their XAP test service to help the XNA community http://xna-uk.net/blogs/news/archive/2011/02/18/xna-uk-xap-test-service-now-live.aspx Transmute shows off a video of the standard character editor http://www.youtube.com/watch?v=qqH6gErG948&feature=youtu.be Microsoft Tech Student introduces their first tech student of the month.  Meet Daniel Van Tassel from the University of Utah and learn how he created an Xbox LIVE Indie Game using XNA Studio http://blogs.msdn.com/b/techstudent/archive/2010/12/22/introducing-our-first-tech-student-of-the-month-daniel-van-tassel.aspx XNA for Silverlight Developers Part 3 - Animation (transforms) http://www.silverlightshow.net/items/XNA-for-Silverlight-developers-Part-3-Animation-transforms.aspx XNA for Silverlight Developers Part 4 - Animation (frame based) http://www.silverlightshow.net/items/XNA-for-Silverlight-developers-Part-4-Animation-frame-based.aspx @suhinini tweets about an XNA Sprite Font generation tool http://twitter.com/#!/suhinini/status/36841370131890176 http://www.nubik.com/SpriteFont/ XNATouch 1.5 is out and in it’s words is faster, simpler, more reliable and has the XNA 4.0 API http://monogame.codeplex.com/releases/view/60815 IndieCity is hosting marketing workshops for Indie Developers (UK and US) http://forums.create.msdn.com/forums/p/75197/457654.aspx#457654 New York Students - Learn XNA and Silverlight for Xbox 360 and Windows Phone 7 http://forums.create.msdn.com/forums/p/72753/456964.aspx#456964 http://blogs.msdn.com/b/andrewparsons/archive/2011/01/13/learn-to-build-your-own-games-for-xbox-360-and-windows-phone-7.aspx http://blogs.msdn.com/b/andrewparsons/archive/2011/01/13/build-a-game-in-48-hours-win-a-kinect-or-windows-phone-7.aspx Extra Credits: Videogame Music http://www.escapistmagazine.com/videos/view/extra-credits/2019-Videogame-Music Steve Pavlina posts an article with useful information for all XNA/XBLIG developers http://www.stevepavlina.com/blog/2011/02/completion-vs-perfection/

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  • Why is Postfix trying to connect to other machines SMTP port 25?

    - by TryTryAgain
    Jul 5 11:09:25 relay postfix/smtp[3084]: connect to ab.xyz.com[10.41.0.101]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3087]: connect to ab.xyz.com[10.41.0.247]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3088]: connect to ab.xyz.com[10.41.0.101]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3084]: connect to ab.xyz.com[10.41.0.247]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3087]: connect to ab.xyz.com[10.41.0.110]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3088]: connect to ab.xyz.com[10.41.0.110]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3084]: connect to ab.xyz.com[10.41.0.102]:25: Connection refused Jul 5 11:09:30 relay postfix/smtp[3085]: connect to ab.xyz.com[10.41.0.102]:25: Connection refused Jul 5 11:09:30 relay postfix/smtp[3086]: connect to ab.xyz.com[10.41.0.247]:25: Connection refused Jul 5 11:09:30 relay postfix/smtp[3086]: connect to ab.xyz.com[10.41.0.102]:25: Connection refused Jul 5 11:09:55 relay postfix/smtp[3087]: connect to ab.xyz.com[10.40.40.130]:25: Connection timed out Jul 5 11:09:55 relay postfix/smtp[3084]: connect to ab.xyz.com[10.40.40.130]:25: Connection timed out Jul 5 11:09:55 relay postfix/smtp[3088]: connect to ab.xyz.com[10.40.40.130]:25: Connection timed out Jul 5 11:09:55 relay postfix/smtp[3087]: connect to ab.xyz.com[10.41.0.135]:25: Connection refused Jul 5 11:09:55 relay postfix/smtp[3084]: connect to ab.xyz.com[10.41.0.110]:25: Connection refused Jul 5 11:09:55 relay postfix/smtp[3088]: connect to ab.xyz.com[10.41.0.247]:25: Connection refused Is this a DNS thing, doubtful as I've changed from our local DNS to Google's..still Postfix will occasionally try and connect to ab.xyz.com from a variety of addresses that may or may not have port 25 open and act as mail servers to begin with. Why is Postfix attempting to connect to other machines as seen in the log? Mail is being sent properly, other than that, it appears all is good. Occasionally I'll also see: relay postfix/error[3090]: 3F1AB42132: to=, relay=none, delay=32754, delays=32724/30/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to ab.xyz.com[10.41.0.102]:25: Connection refused) I have Postfix setup with very little restrictions: mynetworks = 127.0.0.0/8, 10.0.0.0/8 only. Like I said it appears all mail is getting passed through, but I hate seeing errors and it is confusing me as to why it would be attempting to connect to other machines as seen in the log. Some Output of cat /var/log/mail.log|grep 3F1AB42132 Jul 5 02:04:01 relay postfix/smtpd[1653]: 3F1AB42132: client=unknown[10.41.0.109] Jul 5 02:04:01 relay postfix/cleanup[1655]: 3F1AB42132: message-id= Jul 5 02:04:01 relay postfix/qmgr[1588]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 02:04:31 relay postfix/smtp[1634]: 3F1AB42132: to=, relay=none, delay=30, delays=0.02/0/30/0, dsn=4.4.1, status=deferred (connect to ab.xyz.com[10.41.0.110]:25: Connection refused) Jul 5 02:13:58 relay postfix/qmgr[1588]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 02:14:28 relay postfix/smtp[1681]: 3F1AB42132: to=, relay=none, delay=628, delays=598/0.01/30/0, dsn=4.4.1, status=deferred (connect to ab.xyz.com[10.41.0.247]:25: Connection refused) Jul 5 02:28:58 relay postfix/qmgr[1588]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 02:29:28 relay postfix/smtp[1684]: 3F1AB42132: to=, relay=none, delay=1527, delays=1497/0/30/0, dsn=4.4.1, status=deferred (connect to ab.xyz.com[10.41.0.135]:25: Connection refused) Jul 5 02:58:58 relay postfix/qmgr[1588]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 02:59:28 relay postfix/smtp[1739]: 3F1AB42132: to=, relay=none, delay=3327, delays=3297/0/30/0, dsn=4.4.1, status=deferred (connect to ab.xyz.com[10.40.40.130]:25: Connection timed out) Jul 5 03:58:58 relay postfix/qmgr[1588]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 03:59:28 relay postfix/smtp[1839]: 3F1AB42132: to=, relay=none, delay=6928, delays=6897/0.03/30/0, dsn=4.4.1, status=deferred (connect to ab.xyz.com[10.41.0.101]:25: Connection refused) Jul 5 04:11:03 relay postfix/qmgr[2039]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 04:11:33 relay postfix/error[2093]: 3F1AB42132: to=, relay=none, delay=7653, delays=7622/30/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to ab.xyz.com[10.41.0.101]:25: Connection refused) Jul 5 05:21:03 relay postfix/qmgr[2039]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 05:21:33 relay postfix/error[2217]: 3F1AB42132: to=, relay=none, delay=11853, delays=11822/30/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to ab.xyz.com[10.41.0.101]:25: Connection refused) Jul 5 06:29:25 relay postfix/qmgr[2420]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 06:29:55 relay postfix/error[2428]: 3F1AB42132: to=, relay=none, delay=15954, delays=15924/30/0/0.08, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to ab.xyz.com[10.41.0.101]:25: Connection refused) Jul 5 07:39:24 relay postfix/qmgr[2885]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 07:39:54 relay postfix/error[2936]: 3F1AB42132: to=, relay=none, delay=20153, delays=20123/30/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to ab.xyz.com[10.40.40.130]:25: Connection timed out)

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  • PortForwarding to IIS in Linux

    - by Simon
    Hi, I am trying to set up port forwarding on a linux box to a IIS webserver on my internal network. The web server sits on Windows 2003 Server. My linux box has eth0 - Internet connection eth1 - internal subnet (10.10.10.x) eth2 - 2nd internal subnet (129.168.0.x) dhcp interface my webserver is on the eth2 interface (192.168.0.6) I am doing port forwarding for port 80 with no avail. I use the same set of rules to port forward to a different webserver and it works. The webapplication is available on the internal network but not for external users. iptables -t nat -A PREROUTING -p tcp -i eth0 -d $PUBLIC_IP --dport 80 -j DNAT --to 192.168.0.6:80 iptables -A FORWARD -p tcp -i eth0 -o eth2 -d 192.168.0.6 --dport 80 -m state --state NEW -j ACCEPT iptables -A FORWARD -t filter -o eth0 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT iptables -A FORWARD -t filter -i eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE Any Ideas?

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  • One IP, One Port, Multiple Servers

    - by Adrian Godong
    I am looking for a solution to forward one public IP address and one specific port to different machines based on hostname (as of now, I need it only for HTTP). The current setup is NAT on a commodity router (it only provide simple public port to private IP address / port forwarding). I can add a Windows Server 2008 R2 machine before the router if required, but prefer not to do so. So ideally, I would like to have the current setup and the forwarding is done on one of the Windows Servers. Is it possible to do this?

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  • Custom BizTalk, Orchestration SMTP Adapter Dynamic send port

    How to build a BizTalk application that will allow run time configuration and sending of SMTP email from within an orchestration  read moreBy BiZTech KnowDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • .htaccess 301 redirect with regex?

    - by Eddie ZA
    How to do this with regular expression? Old -> New http://www.example.com/1.html -> http://www.example.com/dir/1.html http://www.example.com/2.html -> http://www.example.com/dir/2.html http://www.example.com/3.asp -> http://www.example.com/dir/3.html http://www.example.com/4.asp -> http://www.example.com/dir/4.html http://www.example.com/4_a.html -> http://www.example.com/dir/sub/4-a.html http://www.example.com/4_b.html -> http://www.example.com/dir/sub/4-b.html I've tried this: Redirect 301 /1.html http://www.example.com/dir/1.html Redirect 301 /2.html http://www.example.com/dir/2.html Redirect 301 /3.asp http://www.example.com/dir/3.html Redirect 301 /4.asp http://www.example.com/dir/4.html Redirect 301 /4_a.html http://www.example.com/dir/sub/4-a.html Redirect 301 /4_b.html http://www.example.com/dir/sub/4-b.html

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  • Dedicated NIC or dedicated port for iSCSI?

    - by Newt
    When spec'ing and configuring a machine that will utilise shared iSCSI storage, I've read a lot of documentation which suggests a dedicated network adapter should be used for iSCSI communication. That makes a lot of sense and I have no problem with it. The question I do have, is this - should that suggestion be taken to mean that a separate physical NIC should be used, or will a dedicated port/ports on a dual/quad port NIC be just as good? My suspicion is that simply using dedicated port(s) on a shared NIC would be just as good. Any input greatly appreciated.

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  • Virtual Brown Bag Recap: FancyHands, CanCan, 1KB XMas Tree, YouTube Yuks

    - by Brian Schroer
    At this week's Virtual Brown Bag meeting: Claudio has some one-month Evernote premium accounts to give away Claudio & George talked about FancyHands, the 4-hour work week, and paying people to do the stuff you don't want to JB shared more Ruby gems: cancan and open and talked about insert and other Ruby Enumerable functions We looked at the winner of the 1KB JavaScript Christmas contest and some fun YouTube videos For detailed notes, links, and the video recording, go to the VBB wiki page: https://sites.google.com/site/vbbwiki/main_page/2010-12-23

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  • Port forwarding (portmap) works only locally

    - by Tag Wint
    There are four hosts hostA winXP hostB Win2003 hostC Linux RHEL hostD Linux RHEL hostA cannot connect to C and D directly, but B can hostA connects to hostB using VPN hostB and hostC belong to the same subnet1 hostD is in subnet2 From hostA I need to connect to hostC and hostD by SSH. Now I can do it as follows: 1.connecting from hostA to hostB by RDP logon and there: 2.start putty client. I'd like to omit step 1 and connect from A to C and D directly On hostB I have admin acoount and configure port forwarding as follows: netsh interface portproxy add v4tov4 listenport=N1 connectaddress=hostC_IP connectport=N2 netsh interface portproxy add v4tov4 listenport=N3 connectaddress=hostD_IP connectport=N2 netsh interface portproxy show all: Listen on IPv4: Connect to IPv4: Address Port Address Port --------------- ---------- --------------- ---------- * N1 hostC_IP N2 * N3 hostD_IP N2 Now from hostB I can connect to either C and D: ssh localhost:N1 ssh localhost:N3 from hostA ssh hostB:N1 works too, but ssh hostB:N3 DON'T I guess the reason might be different subnets, still have no idea how to fix it. What should I do?

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  • Use Microsoft PowerPivot to Access Salesforce.com Through the OData Connector

    - by dataintegration
    This article will explain how to connect to any of our OData Connectors with Microsoft Excel's PowerPivot business intelligence tool. While the example will use the Salesforce Connector, the same process can be followed for any of the RSSBus OData Connectors. Step 1: Download and install both the Salesforce Connector from RSSBus and PowerPivot for Excel from Microsoft. Step 2: Next you will want to configure the Salesforce Connector to connect with your Salesforce account. If you browse to the Help tab in the Salesforce Connector application, there is a link to the Getting Started Guide which will walk you through setting up the Salesforce Connector. Step 3: Once you have successfully configured the Salesforce Connector application, you will want to open Excel and select the PowerPivot tab at the top of the window. Step 4: Here you will click on the button labeled PowerPivot Window at the top left. Step 5: A new pop up will appear. Now select the option "From Data Feeds". Step 6: In the resulting Table Import Wizard you will enter the OData URL of the Salesforce Connector. You can find this by clicking on the Settings tab of the Salesforce Connector. It will look something like this: http://localhost:8181/sfconnector/data/conn/odata.rsc. You will also need to add authentication options in this step. To do this, click on the Advanced button and scroll down to the Security section of the resulting pop up window. Change the Integrated Security option to "Basic". You will also need to enter the User ID and Password of the user who has access to the Salesforce Connector. Step 7: When the connection to the Salesforce Connector is successful, click the Next button at the bottom of the window. Step 8: A table listing of the available tables will appear in the next window of the wizard. Here you will select which tables you want to import and click Finish. Step 9: If the import was successful, click Close and you are done! Your data is now in PowerPivot.

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  • Re-Route Mail to a port other than 25

    - by Ken
    Is there a way to route mail to another port? I have an email account attached to my laptop that I'd like to be able to send and receive mail from. Due to mobility, I'll be passing through various networks that will probably block this port. My dynamic DNS provider allows me to utilize web-forwards for MX domains; is this possible? where I can web forward to a domain:port which is managed by my DNS provider when I traverse between networks. If not, is there a way? Of course i could use web-mail or relay-forwarding from my home server, but that's not geeky enough.

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  • Virtual Brown Bag: Ruby Newbies, Mockups, There *is* an I in SOLID, fuv

    - by Brian Schroer
    At this week's Virtual Brown Bag meeting: Claudio pointed us to Try Ruby! and Rails For Zombies, two sites to educate Ruby newbies We looked at the free version of Balsamiq, and other online mockup sites George walked us through a refactoring to isolate roles and adhere to the Interface Segregation Principle (the "I" in SOLID) We laughed at fuv, the code editor for "real programmers" For detailed notes, links, and the video recording, go to the VBB wiki page: https://sites.google.com/site/vbbwiki/main_page/2011-02-10

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  • Running multiple services on Port 443, Tunnel SSH over HTTPS

    - by lajuette
    Situation: I want to tunnel SSH sessions through HTTPS. I have a very restrictive firewall/proxy which only allows HTTP, FTP and HTTPS traffic. What works: Setting up a tunnel through the proxy to a remote linux box that has a sshd listening at port 443 The problem: I have to have a web server (lighty) running at port 443. HTTPS traffic to other ports is forbidden by the proxy. Ideas so far: Set up a virtual host and proxy all incoming requests to localhost: (e.g. 22) $HTTP["host"] == "tunnel.mylinux.box" { proxy.server = ( "" => (("host" => "127.0.0.1", "port" => 22)) ) } Unfortunately this won't work. Am i doing something wrong, or is there a reason, that this won't work?

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  • Trouble with setting up Mac SSH with TP-LINK router

    - by arxanas
    I have a Mac running OS X 10.7.2, and a TP-Link TL-WR740N (whose control panel looks like this). Remote Login is on in the Mac's System Preferences, and port 22 is set to forward on the router. I can access my Mac as a web server using the external IP on port 80, which I have set up through the same port-forwarding mechanism provided by the router, but when I try to ssh server@external-ip, it just times out after a long while. (The same thing happens when I try vnc.) I can, however, ssh and vnc successfully into that computer while I'm on the same network when using its internal IP. Since ssh appears to work and port forwarding appears to work, I can't figure out what's causing the problem. Does anyone have any idea what might cause this?

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