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• networking without port forwarding

  - by Wallacoloo

  I'm trying to add networking functionality to my game. I want any user to be able to host the game, and anyone to be able to connect as a client. The client sends info to the host about their player's position, etc. When the host receives a message, it validates it and then broadcasts it to its other clients. I will primarily be dealing with UDP, but will also need TCP for chat & lobby stuff. The problem is that I can't seem to get a packet sent from the client to the host or the other way around without enabling port forwarding on my router. But I don't think this is necessary. I believe the reason I need port forwarding is because I want to send a packet from 1 computer on a LAN to another computer on a different LAN, but neither of them have a global ip address since they're in a LAN. So really, I can only send packets targeting the other network's router, which must forward it on to the machine I want to reach. So how can I do this without port forwarding? Somehow a web server can communicate with my computer, which doesn't have a global ip, without port forwarding. And I've played plenty of multi-player games that don't require me to enable port forwarding. So it must be possible. Btw, I'm using SDL_Net. I don't think this will change anything though.

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• Computer won't stay powered up

  - by Android

  I have just tried to turn my PC on this morning and it won't stay powered up. It will come on as normal for about 5 seconds, not quite long enough for the monitor to wake up. Then it will power off. After about 2 seconds it will start again, it will continue like this until I pull out the plug. Plugging it in again doesn't restart the cycle although pressing the power button does. I have tried to clear the cmos but beyond that I have no ideas. It was working perfectly when I put it in hibernate last night. NOTE: I am using a Dell Optiplex 755 UPDATE 1: I took out the motherboard battery and it almost came on then it displays the message Error loading Operating System UPDATE 2: After taking out the custom video card, it says "No hard drive present"

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• How can I forward Mailer Daemon notifications in Outlook 2000?

  - by Elvith

  I have a rule in Outlook 2000 which states that any incoming message should be forwarded to another adress (The mailaccount is only used to send automatic alerts and notifications of an application, answers to this adress should be forwarded to the admin of this application). When the application tries to send an eMail to a non existent adress, the resulting Mailer Daemon notification won't be forwarded and the admin of the server will notice this problem very late (if ever). Is there a way to forward such messages to another adress? The problem seems to be, that Exchange delivers such notifications as "Report" but the rules will only apply to "Messages". Thanks in advance!

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• Brute force algorithm implemented for sudoku solver in C [closed]

  - by 0cool

  This is my code that I have written in C.. It could solve certain level of problems but not the harder one.. I could not locate the error in it, Can you please find that.. # include <stdio.h> # include "sudoku.h" extern int sudoku[size][size]; extern int Arr[size][size]; int i, j, n; int BruteForceAlgorithm (void) { int val; for (i=0; i<size; i++) { for (j=0; j<size; j++) { if (sudoku[i][j]==0) { for (n=1; n<nmax; n++) { val = check (i,j,n); if ( val == 1) { sudoku[i][j]=n; // output(); break; } else if ( val == 0 && n == nmax-1 ) get_back(); } } } } } int get_back (void) { int p,q; int flag=0; for ( p=i; p>=0; p-- ) { for (q=j; q>=0; q-- ) { flag=0; if ( Arr[p][q]==0 && !( p==i && q==j) ) { if ( sudoku[p][q]== nmax-1 ) sudoku[p][q]=0; else { n = sudoku[p][q]; sudoku[p][q]=0; i = p; j = q; flag = 1; break; } } } if ( flag == 1) break; } } Code description: Sudoku.h has definitions related to sudoku solver. 1. size = 9 nmax = 10 2. check(i,j,n) returns 1 if a number "n" can be placed at (i,j) or else "0". What does this code do ? The code starts iterating from sudoku[0][0] to the end... if it finds a empty cell ( we take cell having "0" ), it starts checking for n=1 to n=9 which can be put in that.. as soon as a number can be put in that which is checked by check() it assigns it and breaks from loop and starts finding another empty cell. In case for a particular cell if it doesn't find "n" which can be assigned to sudoku cell.. it goes back to the previous empty cell and start iterating from where it stopped and assigns the next value and continues, Here comes the function get_back(). it iterates back..

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• Mac | Router not assigning the IP address.

  - by Vaibhav Bajpai

  I recently installed Mac OS X 10.6, however the ethernet state is down. The assigned IP is 169.x.x.x. When booted the live USB of Ubuntu, I properly get an IP assigned in the range 192.168.1.x from the router 192.168.1.1 I am using the same router and same ethernet line. I tried to ping to 192.168.1.1 from my Mac and I get a host down message. I tried to manually assign the IP and set the router IP to 192.168.1.1 but still the router is unreachable.

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• Firefox hangs after upgrade to version 3.6.11

  - by Yasmine

  I just upgraded firefox to version 3.6.11 and after the installation was done I got the message that adobe flash player 10.1 needs to be downloaded so I did (even though the flash player I had before upgrading firefox was 10.1 but I reinstalled it coz I thought that since firefox got updated so it needs the plugin to be installed again) and after that whenever I open any website with flash in it (like youtube or facebook games), firefox hangs and stops responding. I don't know if this is related to firefox upgrade or the flash player. Can anyone help me on this? Thanks

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• Website ocasionally does not load on first click

  - by tfe

  Today I noticed that my website hosted on a virtual server ocasionally does not load on first click. I click on some link, browser starts loading page but nothing loads and does not not appear any error message (like "connection reset by peer etc). Nothing. When I click the same link again, page loads immediately. The same situation on 2 computers in different browsers. It happends not always, maybe on each 20... or 30 click. Sites from other servers load without this problem. Any ideas what can cause this problem?

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• Creating a Virtual Host with xampp

  - by Will

  i'm using xampp trying to set up a virtual host. Here's my httpd-vhosts.conf file: <VirtualHost *:80> DocumentRoot "C:\Users\wbaizer\PhpstormProjects\Test" ServerName test1.localhost </VirtualHost> my hosts file has the following: 127.0.0.1 test1.localhost when I try to access test1.localhost in Chrome it gives me this message: "You don't have permission to access the requested directory. There is either no index document or the directory is read-protected." What am I doing wrong, what do I need to do, and how do I do that?

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• &ldquo;Why do transactional messages all have the same priority?&rdquo;

  - by John Breakwell

  I answered this question on the MSMQ forum on MSDN and thought it worth sharing here. The poster wanted to know why all transactional messages have a fixed priority of zero (instead of 0 through 7). They wanted the guaranteed delivery of messages to a queue but wanted to assign different levels of priority. Some aspects of MSMQ were defined way back in the last century and this is one of them. If I remember right, the reason was to avoid the following scenario: You have a single transaction of 3 messages (a, b and c) with priorities 5, 3 and 4 respectively. The messages are sent in order a,b,c The messages arrive in the queue and are arranged in order a,c,b to reflect priority order This breaks the guaranteed order part of the transaction.  I know that very few people send more than one message in a transaction but that is a scenario that MSMQ has to be able to handle; for the majority, including yourself, this scenario is irrelevant which is why you are surprised by the absence of transactional priorities. The options, therefore, available to the Microsoft developers were to: Implement code that allowed you to send messages with variable priority as long as any messages within the same transaction were the same priority, or Define a set priority for all transactional messages As you can understand, option 1 would be a complicated arrangement with all the necessary enforcement, error handling, user education and documentation, etc. Sure, it would have been possible to implement option 1 but I expect the product group decided to invest the development time in some other aspect of MSMQ. Now, with five versions out there, it would be confusing to change how the product operates, in addition to potentially breaking exisiting systems that have been working fine for years. So, balancing cost and risk against customer demand, I would not expect this feature to ever change.

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• Internet Explorer 9 beta installation problem

  - by Eric

  I'm running Vista SP2, x64. Because I wanted to test out the IE9 beta, I downloaded the English-language installer for 64-bit Vista systems. Running the installer is fine until it starts downloading required updates. The progress bar doesn't get far before it completely stops moving. Then after 20 minutes to an hour, it will tell me that there's an update I have to install, but as soon as I click OK it sends me an error message, telling me that it can't go to the url of the update which is here. So I manually enter it into my browser, which prompts me to download a standalone update. After that's been downloaded and I run it, it tells me that the update does not apply to my system. I'd appreciate any help to solving my problem.

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• How do I run perfmon against a remote machine?

  - by WindyCityEagle

  For starters I'm trying to do this from a Windows 7 box to a Windows 7 box. I know the simple answer should be to enter \\computername where it says "Select Counters From Computer". Trouble is, every time I do that I get an error message that says "Unable to connect to machine" I know the machine is out there and accessible, because I can bring up windows explorer and enter \\computername\c$ in the explorer bar and then can browse their c drive. So the machine is out there. Are there special permissions for perfmon? Is here a service which needs to be running on the remote machine?

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• E: The package adobe-flashplugin needs to be reinstalled, but I can't find an archive for it. Ubuntu 9.10

  - by Paikkos

  I had some problems with amarok player, I couldn't get any sound from it. Anyway, I fixed it somehow, from terminal, with some packages, after a couple of reboots, now I have problem with the adobe-flashplugin. I'm trying this in terminal but: sudo apt-get install adobe-flashplugin Reading package lists... Done Building dependency tree Reading state information... Done E: The package adobe-flashplugin needs to be reinstalled, but I can't find an archive for it. I also tried the update manager, but I get something about partial upgrade but that thing also isnt working, and I get a message that I have to install it manually or I remove it completely. So, how can I remove it completely and then I will install it clean again from the beggining?

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• Access denied for user 'root@localhost' (using password:NO)

  - by murgatroid99

  I am attempting to install a network management package called cacti onto Ubuntu running under Windows Virtual PC. I attempted to install MySQL as it is one of cacti's dependencies. I can install and start the MySQL server, but whenever I try to access it in any other way, such as to change the password, I get the error message Access denied for user 'root@localhost' (using password:NO). I would like to know what is causing this and how to fix it. Edit: (just in case my comments are not visible) The answers from HD and Devin Ceartas did not work for me.

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• I lent my 3 USB modem to a friend because her Meteor USB modem had run out of credit.

  - by oddbyte7

  I lent my 3 USB modem to a friend because her Meteor USB modem had run out of credit. The 3 modem worked on her machine fine once the driver was installed. She bought Meteor credit a couple of days later, uninstalled the 3 driver and she only now seems to get on the Meteor server, when you try IE8 or Firefox you get the message “Page could not be found”. I uninstalled the Meteor driver and reinstalled…no change. The OS is Win_7 home edition. Any help would be much appreciated. Regards to all, oddbyte7.

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• Error code 0x80070035. The network path was not found

  - by user144606

  My system is connected with a local LAN connection with 30 PC's. I'm not able to access the shared drive in the network, but I'm able to ping the IP address in which the drive is present. I have checked to start all the services, which are to be started and i have check the TCP/UDP ports also, but even after that I'm not able to access the drive, the same error message is being displayed again and again. Please help me to rectify the problem. I'm trying to solve the problem for the last 1 week. I have tried various solutions which are present in various web site, but I'm not able to find a proper solution. So please help me.

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• Resolution is Being Stupid. Help me?

  - by One Terrorist

  I'm having trouble with a new computer I bought a few days ago. I have come to the conclusion that the resolution of the screen is too small, at the moment it is 1024x768 and I think it should be 1280x960, due to a message given at the resolution tab of the control panel. It states: (!) If your resolution is below 1280x960, some items on the screen may not fit on the screen. The computer is an Asus A54H and runs 64-bit operating system with Windows 7 Home Premium. This link has a screenshot of the screen at the moment, the icons and font are too big and are a little stretched. Thank you in advance!

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• Three Ubuntu 12.04 + Xfce problems

  - by user1708495

  sorry to bother you, but I wanted to set up a minimal Ubuntu 12.04 with minimal Xfce and probably due to my unawareness of several important things, not everything is working properly. -Sometimes when I shutdown I get error message from iwlwifi: It starts with a time out error about sending a power table and after several other errors it says "On demand firmware reload and "Unable to initialize device". And the shutdown stops there so I can only use hard shutdown. -Also when I boot, I often boot to a black screen, but pressing ctrl+alt+f1 gets me to the login prompt (I do not use a login manager). But then I sometimes cannot type. Seems probably more like a X server problem. When it works I only see the Plymouth splash for a very short time or sometimes not at all. -And the last problem is the most annoying one: Frequently Xfce freezes completely. I think ctrl+alt+f1 works sometimes, but other times I also have to use hard shutdown. When it freezes the cpu fan gets louder. I've been using Xbuntu for a while before, but with "real" Linux I am more a beginner, so I hope you forgive my questions Thanks

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• Why does Windows 7 update fail with error 800706BE?

  - by parsley72

  I have 18 updates appearing for Windows 7 x64 but when I try to install any of them I get the error 800706BE. The Microsoft help that appears gives several solutions: Fix It button. This downloads MicrosoftFixit50123.msi from http://go.microsoft.com/?linkid=9666880 (963KB). After running it displays the message "This Microsoft Fix It has been processed". System Update Readiness Tool. This is actually in response to error 800B0100 which isn't the one I'm seeing. You download the file from http://windows.microsoft.com/en-US/windows7/What-is-the-System-Update-Readiness-Tool (362 MB). After running it says "Do you want to install the following Windows software update: Hotfix for Windows (KB947821)"

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• Destination host unreachable

  - by user1010101

  I have 2 router connected to 1 switch which contains two vlans, 1 router has the ip table of vlan1 and the other router have the ip table of vlan2 I have trunked both router cable to the switch. I have set 1 ip table per router which correspond to the ip address of the PC that have this router address as a gateway. When I ping from 192.168.100.2 to 192.168.200.2 it tells me that destination host is unreachable and the message is from the router 192.168.100.1. So I guess router for 192.168.100.x does not see the router for 192.168.200.x , right ? Or am I wrong ? What are good troubleshooting steps ? http://i.imgur.com/b94Ir.png is the representation of the network, i cannot post image since im not reputated enough.

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• Is there any automatic Windows software to check status of website..

  - by user59280

  Is there any automatic Windows software application to check status of website and alert me through mail or message or trigger am alarm.. Example: Consider I am waiting to buy a new latest movie ticket online (through) and the ticket booking has not been informed properly (online booking is opening at a random time). In this situation I will be forced to slave for my PC to get the tickets. To avoid such situation, can you suggest me a software? So I need a software which will alert me when the online booking is open.. Can anyone please help me?

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• Password not accepted when resuming from sleep

  - by Comrade

  My HP Pavilion dv-series notebook will not accept the user account password for the logged in user when resuming from sleep - message returned is Incorrect Password. Simply selecting the Switch User option reloads the login screen and allows me to log in as the same user with the same password that was originally rejected. And, yes I've tried it more than one (hundred) times in case you were thinking it's just a case of slippery fingers. Another interesting point is that it appears to be independent of the software running on the machine. Since the issue first appeared, I have done two clean installs where all HD partitions were wiped and new ones created during fresh installation of the OS. The first such clean install was of Ubuntu (Lucid) 10.04 amd-64, the second of Win 7 Pro 64 (from boxed disc and activated post install). Exactly the same symptoms, described above, are exhibited on both platforms. Have engaged in significant amount of Googling an come up empty so any ideas are welcome.

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• Distribution upgrade (12.04 -> 14.04 LTS) halted while unpacking/installing packages

  - by Bob Sully

  As the title states...it just stopped unpacking/installing. "Preparing to unpack .../lirc_0.9.0-0ubuntu5_amd64.deb ..." then stopped in its tracks. Everything else is still running. The update manager process is still alive; if I hit ctrl-c, it gives me the warning message about leaving the system in a broken state. Also, if I run top, there is a process called "trusty" which is still running. I have NOT killed either process. lsb_release -a gives: LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch Distributor ID: Ubuntu Description: Ubuntu 14.04.1 LTS Release: 14.04 Codename: trusty I assume that if I try to restart update-manager, I won't be offered the option to upgrade again. Anyone have a way I can get the update-manager/dist-upgrade process to simply finish the upgrade? Thanks!

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• Safari 4.0.5 will not play any HTML5 (H.264) video

  - by user34407

  The html5test.com tells me that my browser does not support the <video> element, and when I try example page, I get the fallback message, usually "Your browser does not support HTML5 video." I know this should work in Safari. I am on Windows 7, 64-bit (running 32-bit Safari). Video works in Safari for everyone else in the office. (Windows 7 setup exactly like mine, Vista, OSX.) I have tries uninstalling, deleting all user preferences, and reinstalling. Anything else I should try?

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• iSCSI drives suddenly inaccessible or corrupted

  - by Hammer1

  I have two NAS (Seagate Black Armors) connected to our network through iSCSI to a Dell Optiplex 760 running 32-bit Windows 7 and Windows iSCSI Initiator. For some unknown reason within the last week both are reportedly inaccessible and/or corrupt (that is the error message generated when I attempt to open the on the iSCSI computer). However, connecting to either of them via direct IP goes off without a hitch. I've tried Error checking but received "The disk check could not be performed because Windows could not access the disk." I've tried System Recover to a date almost two weeks back thinking Windows update may have caused the issue but there is no change. Anyone have an explanation and/or a solution to get them reconnected? Thanks.

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• Best server for mailing application [closed]

  - by Cyber Junkie

  My application is similar to a reminder service that reminds users of events that they scheduled. I'm sending emails to users through a PHP script. I'm not sending one email to multiple recipients. Each recipient receives a different message. I plan to use cron jobs every minute and expect the application to send roughly 200 individual emails in 1 hour (for a small user base that may grow). I don't have hosting experience with this type of application. I plan to start on a shared host and move up in the future to vps or dedicated. Most shared hosts that I looked into allow 50-100 emails per hour with delays between mailings. Please kindly inform me what I should look for in web hosts for this kind of application.

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