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  • DNS and RPC Unavailable

    - by Berek Bryan
    I have a server that is host a MSSQL database and some other server related tasks. The server communicaties with a large number of devices. The devices send data to the server. The communication links are down between the devices on the intranet and to the outside world. However it seems I can ping and can be pinged from machines on the same switch. This includes the DNS Servers. When I run, C:\ipconfig /registerdns I get RPC Server is Unavailable. So, it seems that the server can not verify the DNS server. Both DNS server are up and running. No other machines are affected on the network.

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  • SQL Server Replication Agent priority

    - by Wikser
    Every hour a server replicates SQL server data with some external web server. During this time, which takes about 2-5minutes, the database seriously slows down. Colleagues, which work with the front end applications of that on another terminal server, even regularly start complaining. The databases are also synchroniously mirrored (via SQLServer mirroring, no replication) to a third server. Note that 99% of the data is replicated outgoing, so the server should rarely need to update its data. As the (merge and transactional) replication tasks are not time-critical, I would like to reduce their priority or somehow slow them down, so they don't affect the database performance that much. How would you implement that?

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  • Is anyone using Node.js as an actual web server?

    - by Jeremy
    I am trying to convince myself to pick it up and start developing with it, but I want to know if anyone has expected stability issues or anything of the sort. I understand it isn't "production" quality, like Apache or IIS. I figure for a small site, it should be fine (max of 200 concurrent connections). Should I assume this?

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  • RDP failing due to Audit Failure on the IPSec driver

    - by paulwhit
    I am trying to RDP into a Windows 7 Hyper-V image connected to a corporate network that publishes IPSec policies via Active Directory. I am seeing this error in the log: IPsec dropped an inbound clear text packet that should have been secured. If the remote computer is configured with a Request Outbound IPsec policy, this might be benign and expected. This can also be caused by the remote computer changing its IPsec policy without informing this computer. This could also be a spoofing attack attempt. Remote Network Address: XXX.XXX.XXX.XXX Inbound SA SPI: 0 How do I change my settings on the computer using RDP to something suitable for the domain-joined Hyper-V image?

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  • Connecting to SQL Server on Parallels Desktop with PHP

    - by Zen Savona
    well I recently bought a Mac and am using it as my primary computer. Because I am required to work with MSSQL via PHP, I have installed Parallels Desktop and run Server 2008 R2 on it. I am using the same mixed mode authentication which I previously had on windows. When I attempt to connect to the server with PHP using either a new test file or my old code, it just doesn't find the server. I have tried running PHP on the XP install with parallels, and using the hostname as COMPUTERNAME\SQLEXPRESS, LOCALIP\SQLEXPRESS localhost localip etc, PHP never finds the server. Also note that I can connect to the database server using Management Studio without problems, so SQL Server is running. Please note that both PHP and MSSQL are running within the virtualised environment. Any contribution is appreciated

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  • With a node.js powered server on EC2, how can I decrease the TCP connection time?

    - by talentedmrjones
    While profiling my application I've noticed that in the Firebug Net panel, the "Connecting" time—that is the time waiting for a TCP connection—is consistently around 70–100ms. See image below: Of course in the grand scheme of things, 100ms is not long, but I have seen other services that respond with 0ms Connect time. So if other servers can, I should be able to as well. Any thoughts on how I might even beging to troubleshoot this?

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  • How to get audio driver for compaq c700 ?

    - by Leena
    Hi, Initially i have audio driver and its works fine.But some times speaker was clear.So one of my friend installed some audio driver,after that totally disabled the volume. For that reason, i also tried to get audio driver and installed many times.Now i don't know many drivers .inf in my laptop.from device manager i have deleted the audio driver's,below i have attached the screen shot yours kind reference. Please help me to get audio drivers.First, i need to remove the unwanted drivers .inf files from laptop then i have to install the new audio driver. Experts,please suggest me to get audio driver without reinstall the OS. Details: Compaq c700 (i don't know model number) windows xp sp2 p/n : KT188PA#ACJ I appreciate your help.

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  • I'm trying to grasp the concept of creating a program that uses a SQL Server database, but I'm used

    - by Sergio Tapia
    How can I make a program use a SQL Server database, and have that program work on whatever computer it's installed on. If you've been following my string of questions today, you'd know that I'm making an open source and free Help Desk suite for small and medium businesses. The client application. The client application is a Windows Forms app. On installation and first launch on every client machine, it'll ask for the address of the main Help Desk server. The server. Here I plan to handle all incoming help requests, show them to the IT guys, and provide WCF services for the Client application to consume. My dilemma lies in that, I know how to make the program run on my local machine; but I'm really stumped on how to make this work for everyone who wants to download and install the server bit on their Windows Server. Would I have to make an SQL Script and have it run on the MS SQL server when a user wants to install the 'server' application? Many thanks to all for your valuable time and effort to teach me. It's really really appreciated. :) Edit: To clarify, each business will have their server completely separate from me. I will have no access whatsoever to them nor will they be in any way connected to me. (I don't know why I should clarify this :P ) So, assuming the have ABSOLUTELY NO DATABASE SERVER installed; what can I do?

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  • How to represent a tree structure in NoSQL

    - by Vlad Nicula
    I'm new to NoSQL and have been playing around with a personal project on the MEAN stack (Mongo ExpressJs AngularJs NodeJs). I'm building a document editor of sorts that manages nodes of data. Each document is actually a tree. I have a CRUD api for documents, to create new trees and a CRUD api for nodes in a given document. Right now the documents are represented as a collection that holds everything, including nodes. The children parent relationship is done by ids. So the nodes are an map by id, and each node has references to what nodes are their children. I chose this "flat" approach because it is easier to get a node by id from a document. Being used to having a relation table between nodes and documents, a relation table between nodes and children nodes I find it a bit weird that I have to save the entire "nodes" map each time I update a node. Is there a better way to represent such a data type in NoSQL?

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  • For nodejs what are best design practices for native modules which share dependencies?

    - by Mark Essel
    Hypothetical situation, I have 3 node modules all native, A, B, and C.  A is a utilities module which exposes several functions to javascript through the node interface, in addition it declares/defines a rich set of native structures and functions B is a module which is dependent on data structures and source in A, it exposes some functions to javascript, in addition it declares/defines native structures and functions C is a module which is dependent on data structures and source in A & B, it exploses some functions to javascript, in addition it declares/defines native structures and functions So far when setting up these modules I have a preinstall script to install other dependent includes, but in order to access all of another modules source what is the best way to link to it's share library object (*.node) ? Is there an alternative best practice for native modules (such as installing all source from other modules before building that single module)? Reply

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  • mouse to Three.js world coordinates during TrackballControls

    - by PanChan
    I know there are a lot of answers how to translate the mouse coordinates to the Three.js world coordinates (I prefere this one). But I have troubles on calculating when using TrackballControls. First what I expect to do: I want to add a zoom function to my scene. Not by the mouse wheel, the user should be able to draw a rectangular and by lifting the mouse button, the camera is zooming on this rectangular. I've implemented all and it works, but only when the user didn't rotate/zoom/pan with TrackballControls! If the camera was manipulated, I get wrong coordinates for my drawn rectangular. I really can't figure out why... I only know that it's an issue with TrackballControls, because without them, it works. Does anyone see my mistake? I'm sitting here for two days now and can't find it.... :( var onZoomPlaneMouseDown = function(event){ event.preventDefault(); var plane = document.getElementById("zoomPlane"); var innerPlane = document.getElementById("innerZoomPlane"); var mouseButton = event.keyCode || event.which; mouse.x = ( event.clientX / WIDTH ) * 2 - 1; mouse.y = - ( event.clientY / HEIGHT ) * 2 + 1; if(mouseButton === 1){ var vector = new THREE.Vector3( mouse.x, mouse.y, 0.5 ); projector.unprojectVector( vector, camera ); var dir = vector.sub( camera.position ).normalize(); var distance = - camera.position.z / dir.z; zoomPlaneUpperCorner = camera.position.clone().add( dir.multiplyScalar( distance ) ); innerPlane.style.display = "block"; innerPlane.style.top = event.clientY + "px"; innerPlane.style.left = event.clientX + "px"; } if(mouseButton === 3){ plane.style.display = "none"; innerPlane.style.display = "none"; } }; var onZoomPlaneMouseUp = function(event){ event.preventDefault(); var plane = document.getElementById("zoomPlane"); var innerPlane = document.getElementById("innerZoomPlane"); var mouseButton = event.keyCode || event.which; mouse.x = ( event.clientX / WIDTH ) * 2 - 1; mouse.y = - ( event.clientY / HEIGHT ) * 2 + 1; var vector = new THREE.Vector3( mouse.x, mouse.y, 0.5 ); projector.unprojectVector( vector, camera ); var dir = vector.sub( camera.position ).normalize(); var distance = - camera.position.z / dir.z; zoomPlaneLowerCorner = camera.position.clone().add( dir.multiplyScalar( distance ) ); if(mouseButton === 1){ plane.style.display = "none"; innerPlane.style.display = "none"; var center = new THREE.Vector3(); center.subVectors(zoomPlaneLowerCorner, zoomPlaneUpperCorner); center.multiplyScalar( 0.5 ); center.add(zoomPlaneUpperCorner); var rayDir = new THREE.Vector3(); rayDir.subVectors(center, camera.position ).normalize(); controls.target = center; var height = zoomPlaneUpperCorner.y - zoomPlaneLowerCorner.y; var distanceToCenter = camera.position.distanceTo(center); var minDist = (height / 2) / (Math.tan((camera.fov/2)*Math.PI/180)); camera.translateOnAxis(rayDir, (distanceToCenter - minDist)); } };

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  • Uploading files to varbinary(max) in SQL Server -- works on one server, not the other

    - by pjabbott
    I have some code that allows users to upload file attachments into a varbinary(max) column in SQL Server from their web browser. It has been working perfectly fine for almost two years, but all of a sudden it stopped working. And it stopped working on only the production database server -- it still works fine on the development server. I can only conclude that the code is fine and there is something up with the instance of SQL Server itself. But I have no idea how to isolate the problem. I insert a record into the ATTACHMENT table, only inserting non-binary data like the title and the content type, and then chunk-upload the uploaded file using the following code: // get the file stream System.IO.Stream fileStream = postedFile.InputStream; // make an upload buffer byte[] fileBuffer; fileBuffer = new byte[1024]; // make an update command SqlCommand fileUpdateCommand = new SqlCommand("update ATTACHMENT set ATTACHMENT_DATA.WRITE(@Data, NULL, NULL) where ATTACHMENT_ID = @ATTACHMENT_ID", sqlConnection, sqlTransaction); fileUpdateCommand.Parameters.Add("@Data", SqlDbType.Binary); fileUpdateCommand.Parameters.AddWithValue("@ATTACHMENT_ID", newId); while (fileStream.Read(fileBuffer, 0, fileBuffer.Length) > 0) { fileUpdateCommand.Parameters["@Data"].Value = fileBuffer; fileUpdateCommand.ExecuteNonQuery(); <------ FAILS HERE } fileUpdateCommand.Dispose(); fileStream.Close(); Where it says "FAILS HERE", it sits for a while and then I get a SQL Server timeout error on the very first iteration through the loop. If I connect to the development database instead, everything works fine (it runs through the loop many, many times and the commit is successful). Both servers are identical (SQL Server 9.0.3042) and the schemas are identical as well. When I open Activity Monitor right after the timeout to see what's going it, it says the last command is (@Data binary(1024),@ATTACHMENT_ID decimal(4,0))update ATTACHMENT set ATTACHMENT_DATA.WRITE(@Data, NULL, NULL) where ATTACHMENT_ID = @ATTACHMENT_ID which I would expect but it also says it has a status of "Suspended" and a wait type of "PAGEIOLATCH_SH". I looked this up and it seems to be a bad thing but I can't find anything specific to my stuation. Ideas?

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  • How to push changes from Test server to Live server?

    - by anonymous
    As a beginner, I finally noticed the issue with making changes to the live server I've been working on, now that I have a couple users on it, since I bring it down so often. I created an EC2 image of my live server and set up a separate instance on EC2, so now I have 2 EC2 instances, Stage and Production. I set up GitHub and push changes to stage and test my code there, and when it's all done and working, I push it to the production branch, and everything is good. And there is a slight issue here since I name my files config_stage.js and config_production.js and set up .gitignore on each server, and in my code, I would have it read the ENV flags and set up the appropriate configs, is this the correct approach? And my main question is: how do you keep track of non-code changes to the server? For example, I installed HAProxy, Stunnel, Redis, MongoDB and several other things onto the Stage server for testing and now that it's all working and good, how do I deploy them to production? Right now, I'm just keeping track of everything I installed and copying configuration files over, which is very tedious and I'm afraid I may have missed a step somewhere. Is there a better way to port these changes over from my test server to my live server?

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  • DHCP server not starting

    - by Bruce
    I'm trying to set a DHCP server on 12.04. I installed: sudo apt-get install isc-dhcp-server My configuration files look like this: /etc/default/isc-dhcp-server INTERFACES="eth0" /etc/network/interfaces auto lo iface lo inet loopback /etc/dhcp/dhcpd.conf ddns-update-style none; default-lease-time 600; max-lease-time 7200; authoritative; log-facility local7; subnet 192.168.1.0 netmask 255.255.255.0 { range 192.168.1.235 192.168.1.240; option subnet-mask 255.255.255.0; option broadcast-address 192.168.1.255; option routers 192.168.1.1; default-lease-time 100000; max-lease-time 100000; } When I run sudo service isc-dhcp-server restart I get: stop: Unknown instance: isc-dhcp-server start/running, process 15384 After this if I run sudo service isc-dhcp-server status it shows that its stopped: isc-dhcp-server stop/waiting What am I doing wrong here?

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  • Olympics data available for all on Windows Azure SQL Database and Power View

    - by jamiet
    Are you looking around for some decent test data for your BI demos? Well, if so, Microsoft have provided some data about all medals won at the Olympics Games (1900 to 2008) at OlympicsData workbook - Excel, SSIS, Azure sample; it provides analysis over athletes, countries, medal type, sport, discipline and various other dimensions. The data has been provided in an Excel workbook along with instructions on how to load the data into a Windows Azure SQL Database using SQL Server Integration Services (SSIS). Frankly though, the rigmarole of standing up your own Windows Azure SQL Database ok, SQL Azure database, is both costly (SQL Azure isn’t free) and time consuming (the provided instructions aren’t exactly an idiot’s guide and getting SSIS to work properly with Excel isn’t a barrel of laughs either). To ease the pain for all you BI folks out there that simply want to party on the data I have loaded it all into the SQL Azure database that I use for hosting AdventureWorks on Azure. You can read more about AdventureWorks on Azure below however I’ll summarise here by saying it is a SQL Azure database provided for the use of the SQL Server community and which is supported by voluntary donations. To view the data the credentials you need are: Server mhknbn2kdz.database.windows.net  Database AdventureWorks2012 User sqlfamily Password sqlf@m1ly Type those into SSMS and away you go, the data is provided in four tables [olympics].[Sport], [olympics].[Discipline], [olympics].[Event] & [olympics].[Medalist]: I figured this would be a good candidate for a Power View report so I fired up Excel 2013 and built such a report to slice’n’dice through the data – here are some screenshots that should give you a flavour of what is available: A view of all the available data Where do all the gymastics medals go? Which countries do top ten all-time medal winners come from? You get the idea. There is masses of information here and if you have Excel 2013 handy Power View provides a quick and easy way of surfing through it. To save you the bother of setting up the Power View report yourself you can have the one that I took these screenshots from, it is available on my SkyDrive at OlympicsAnalysis.xlsx so just hit the link and download to play to your heart’s content. Party on, people! As I said above the data is hosted on a SQL Azure database that I use for hosting “AdventureWorks on Azure” which I first announced in March 2013 at AdventureWorks2012 now available for all on SQL Azure. I’ll repeat the pertinent parts of that blog post here: I am pleased to announce that as of today … [AdventureWorks2012] now resides on SQL Azure and is available for anyone, absolutely anyone, to connect to and use for their own means. This database is free for you to use but SQL Azure is of course not free so before I give you the credentials please lend me your ears eyes for a short while longer. AdventureWorks on Azure is being provided for the SQL Server community to use and so I am hoping that that same community will rally around to support this effort by making a voluntary donation to support the upkeep which, going on current pricing, is going to be $119.88 per year. If you would like to contribute to keep AdventureWorks on Azure up and running for that full year please donate via PayPal to [email protected] Any amount, no matter how small, will help. If those 50+ people that retweeted me beforehand all contributed $2 then that would just about be enough to keep this up for a year. If the community contributes more than we need then there are a number of additional things that could be done: Host additional databases (Northwind anyone??) Host in more datacentres (this first one is in Western Europe) Make a charitable donation That last one, a charitable donation, is something I would really like to do. The SQL Community have proved before that they can make a significant contribution to charitable orgnisations through purchasing the SQL Server MVP Deep Dives book and I harbour hopes that AdventureWorks on Azure can continue in that vein. So please, if you think AdventureWorks on Azure is something that is worth supporting please make a contribution. I’d like to emphasize that last point. If my hosting this Olympics data is useful to you please support this initiative by donating. Thanks in advance. @Jamiet

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  • Dedicated server: managed hosting or manage it myself?

    - by ddawber
    We're currently hosting a number of sites on a self-managed dedicated server. Some companies, however, offer a managed dedicated server hosting service. They offer: Roughly the same server spec Ticketing system support Managed daily backups Virtual firewall (but with a limit of 10 IP addresses allowed through at any one time) Now, this managed hosting is at extra expense - somewhere in the region of $500 per month, and the limit on the number of IP addresses they'll manage on the firewall is also a real pain. My thinking is it would be better and cheaper to Stay with the same host since the dedicated box is fine Get an Amazon AWS account and use their server to manage backups; there are a number of good tools that can be used to automate the process Configure iptables so that I have complete control of the firewall I want to know Is a managed virtual firewall likely to be more secure than me configuring iptables? Whether, in your opinion, it's best to let someone else take care of backups? If, from your experience, there's anything else i'm missing that warrants using managed hosting over a DIY service? I think there is some reluctance to not having managed hosting since a managed host in effect takes responsibility for your server, whereas any hardware or security issues with a server that we manage would mean we are forced to hold our hands up when a client site goes down. That said, I personally don't think a managed host does that much in the day to day running of your server (backups are automatic, OS updates are carried out with ease, etc.).

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  • Dedicated server: managed hosting or manage it myself?

    - by ddawber
    We're currently hosting a number of sites on a self-managed dedicated server. Some companies, however, offer a managed dedicated server hosting service. They offer: Roughly the same server spec Ticketing system support Managed daily backups Virtual firewall (but with a limit of 10 IP addresses allowed through at any one time) Now, this managed hosting is at extra expense - somewhere in the region of $500 per month, and the limit on the number of IP addresses they'll manage on the firewall is also a real pain. My thinking is it would be better and cheaper to Stay with the same host since the dedicated box is fine Get an Amazon AWS account and use their server to manage backups; there are a number of good tools that can be used to automate the process Configure iptables so that I have complete control of the firewall I want to know Is a managed virtual firewall likely to be more secure than me configuring iptables? Whether, in your opinion, it's best to let someone else take care of backups? If, from your experience, there's anything else i'm missing that warrants using managed hosting over a DIY service? I think there is some reluctance to not having managed hosting since a managed host in effect takes responsibility for your server, whereas any hardware or security issues with a server that we manage would mean we are forced to hold our hands up when a client site goes down. That said, I personally don't think a managed host does that much in the day to day running of your server (backups are automatic, OS updates are carried out with ease, etc.).

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  • Server Setups for Agencies [closed]

    - by styks1987
    We are considering consolidating our server administration by cutting down on the number of systems we currently use to manage all our websites(~65 websites). Currently we have a testing server and 3 production servers. (2 - cherokee(linode), 1 - apache (mt)) We don't have a dedicated server admin, so I am stuck with managing all these servers, and as a developer, I don't want to deal with all the server hassle. So my main goal is to cut down on the time spent messing with the servers. We have looked at Pagoda Box and AppFog as possibilities. I am not sure if Pagoda Box would be cost effective. With 65+ websites we may end up paying anywhere from 0 to $50+ per website per month. Right now we page about $250 per month for the 4 VPS servers mentioned above. We already use Capistrano for deployment. I have the opportunity to completely overhaul the entire setup and I would like some feedback on where you found your information for large scale server management or how you currently do it. Articles are welcome. In summary: What is new (past 2 years) in simple server management arena? If you work at an agency or have had agency experience, how do/did you manage your sites? a. What is the level of effort for SSL, new site setup, database management, and extension management. b. How did you handle datacenter outages. Anyone with Pagoda Box experience, do you like it and did you have problems with Wordpress, Cakephp, Drupal, Expression Engine or Magento? a. Is it expensive for you? b. How has server uptime been? Your direction and comments are greatly appreciated.

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  • C# serial port driver wrapper class code and concept quality

    - by Ruben Trancoso
    Hi folks, Would like to know from all you guys what you think about my Serial Wrapper class. Had be a while I've beem working with serial port but never shared the code what somekind make closed to my very own vision. Would like to know if it's a good/bad approach, if the interface is enough and what more you see on it. I know that Stackoverflow is for question but at the same time there's a lot of very good skilled people here and share code and opinion can also bennefit everybody, it's why I decided to post it anyway. thanks! using System.Text; using System.IO; using System.IO.Ports; using System; namespace Driver { class SerialSingleton { // The singleton instance reference private static SerialSingleton instance = null; // System's serial port interface private SerialPort serial; // Current com port identifier private string comPort = null; // Configuration parameters private int confBaudRate; private int confDataBits; private StopBits confStopBits; private Parity confParityControl; ASCIIEncoding encoding = new ASCIIEncoding(); // ================================================================================== // Constructors public static SerialSingleton getInstance() { if (instance == null) { instance = new SerialSingleton(); } return instance; } private SerialSingleton() { serial = new SerialPort(); } // =================================================================================== // Setup Methods public string ComPort { get { return comPort; } set { if (value == null) { throw new SerialException("Serial port name canot be null."); } if (nameIsComm(value)) { close(); comPort = value; } else { throw new SerialException("Serial Port '" + value + "' is not a valid com port."); } } } public void setSerial(string baudRate, int dataBits, StopBits stopBits, Parity parityControl) { if (baudRate == null) { throw new SerialException("Baud rate cannot be null"); } string[] baudRateRef = { "300", "600", "1200", "1800", "2400", "3600", "4800", "7200", "9600", "14400", "19200", "28800", "38400", "57600", "115200" }; int confBaudRate; if (findString(baudRateRef, baudRate) != -1) { confBaudRate = System.Convert.ToInt32(baudRate); } else { throw new SerialException("Baurate parameter invalid."); } int confDataBits; switch (dataBits) { case 5: confDataBits = 5; break; case 6: confDataBits = 6; break; case 7: confDataBits = 7; break; case 8: confDataBits = 8; break; default: throw new SerialException("Databits parameter invalid"); } if (stopBits == StopBits.None) { throw new SerialException("StopBits parameter cannot be NONE"); } this.confBaudRate = confBaudRate; this.confDataBits = confDataBits; this.confStopBits = stopBits; this.confParityControl = parityControl; } // ================================================================================== public string[] PortList { get { return SerialPort.GetPortNames(); } } public int PortCount { get { return SerialPort.GetPortNames().Length; } } // ================================================================================== // Open/Close Methods public void open() { open(comPort); } private void open(string comPort) { if (isOpen()) { throw new SerialException("Serial Port is Already open"); } else { if (comPort == null) { throw new SerialException("Serial Port not defined. Cannot open"); } bool found = false; if (nameIsComm(comPort)) { string portId; string[] portList = SerialPort.GetPortNames(); for (int i = 0; i < portList.Length; i++) { portId = (portList[i]); if (portId.Equals(comPort)) { found = true; break; } } } else { throw new SerialException("The com port identifier '" + comPort + "' is not a valid serial port identifier"); } if (!found) { throw new SerialException("Serial port '" + comPort + "' not found"); } serial.PortName = comPort; try { serial.Open(); } catch (UnauthorizedAccessException uaex) { throw new SerialException("Cannot open a serial port in use by another application", uaex); } try { serial.BaudRate = confBaudRate; serial.DataBits = confDataBits; serial.Parity = confParityControl; serial.StopBits = confStopBits; } catch (Exception e) { throw new SerialException("Serial port parameter invalid for '" + comPort + "'.\n" + e.Message, e); } } } public void close() { if (serial.IsOpen) { serial.Close(); } } // =================================================================================== // Auxiliary private Methods private int findString(string[] set, string search) { if (set != null) { for (int i = 0; i < set.Length; i++) { if (set[i].Equals(search)) { return i; } } } return -1; } private bool nameIsComm(string name) { int comNumber; int.TryParse(name.Substring(3), out comNumber); if (name.Substring(0, 3).Equals("COM")) { if (comNumber > -1 && comNumber < 256) { return true; } } return false; } // ================================================================================= // Device state Methods public bool isOpen() { return serial.IsOpen; } public bool hasData() { int amount = serial.BytesToRead; if (amount > 0) { return true; } else { return false; } } // ================================================================================== // Input Methods public char getChar() { int data = serial.ReadByte(); return (char)data; } public int getBytes(ref byte[] b) { int size = b.Length; char c; int counter = 0; for (counter = 0; counter < size; counter++) { if (tryGetChar(out c)) { b[counter] = (byte)c; } else { break; } } return counter; } public string getStringUntil(char x) { char c; string response = ""; while (tryGetChar(out c)) { response = response + c; if (c == x) { break; } } return response; } public bool tryGetChar(out char c) { c = (char)0x00; byte[] b = new byte[1]; long to = 10; long ft = System.Environment.TickCount + to; while (System.Environment.TickCount < ft) { if (hasData()) { int data = serial.ReadByte(); c = (char)data; return true; } } return false; } // ================================================================================ // Output Methods public void sendString(string data) { byte[] bytes = encoding.GetBytes(data); serial.Write(bytes, 0, bytes.Length); } public void sendChar(char c) { char[] data = new char[1]; data[0] = c; serial.Write(data, 0, 1); } public void sendBytes(byte[] data) { serial.Write(data, 0, data.Length); } public void clearBuffer() { if (serial.IsOpen) { serial.DiscardInBuffer(); serial.DiscardOutBuffer(); } } } }

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  • Force windows video driver reload. Is it possible at all?

    - by somemorebytes
    Hi there, Some drivers use parameters written in the registry to configure themselves when they get loaded at boot time. I can modify those values and then reboot, but I would like to know if it is possible to force the driver reload, making the changes effective without rebooting. Specifically, I am talking about the video driver (nvidia). I read somewhere, that calling through pINvoke() [User32.ll]::ChangeDisplaySettings() with a 640x480x8bits resolution,(which is so low that it should not be supported by a modern driver) will force windows to load the "Standard VGA driver", and making another call with the current resolution will load the nvidia driver again. This does not work though. At least in Windows 7, even if the low res is not displayed as "supported" the system reduces the screen to a little square in the center of the screen, showing the low res wihtout unloading the nvidia driver. So, is there any .NET/Win32 API, service to restart, or any way at all to force a video driver reload? Perhaps programatically disabling the device (as you could do from the Device Manager) and reenabling it again? Any idea? Thanks a lot.

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  • 2 Servers setup for redundency, backup

    - by minal
    I presently have 1 dedicated virtual server running my website/blog/mail, etc. This is on Hyper-V with 512MB RAM. Windows Web2008. With the VM, I have these running within it: SmarterMail – for emails MS DNS – I have my own nameservers on this server SQL Express IIS7 2 IP Address I have now leased 2 physical servers : P4 2.6Ghz 1GB RAM 80GB HDD. With these new servers, I get 2 IPs per server as well. These are running Windows 2008 Standard. With the VM the HDD was obviously on a RAID setup so I was not worried about hardware issues as it fell on the provider to manage. However, with the new servers the HDD is not RAID’d, hence my concern is that if it fails I need a backup position. What would be the most ideal setup to go for? I am thinking: Server 1: (Web/PrimaryDNS) DNS – NS1 SQL Express – OFF turn on when required, ie. Server2 is down SmarterMail – OFF turn on when required, ie. Server2 is down IIS 7 Server2:(SQL/Backup) DNS – NS2 SQL Web Edition SmarterMail IIS 7 How can I set it up so that if 1 goes down I can have everything on 2 instantly or by manual switching over. I am confused as other DNS servers will cache the web servers IP address for requests, and if that server goes down, the backup server will have a different IP. How do I make this work? I will be doing routine backups, in which case I will keep copies of backups on both servers. If I am copying the same stuff on both servers like a mirror then I am losing on using the true performance out of it. It's like 1 server is always on standby. Ideally I want SQL and web on 2 diff machines for best performance. If Server1 goes down, I should be able to switch to Server2 fairly easily. I don't have a problem with manual intervention to start the sql/mail services, etc. In terms of scalabilty, the VM has coped pretty well to date. Moving forward the SQL and IIS workload is going to double pretty quickly. Some ideas would be great.

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  • Microsoft signed driver appears as publisher not verfied

    - by Priyanka Gupta
    Task at hand: Microsoft sign drivers on Win 7. I microsoft signed my driver package 3 times every time thinking I might have missed a step or something. However, I cannot seem to get rid of the Windows Security error message "Windows can't verify the publisher of this driver software'. This is not the first time I have signed the driver packages. I was successfully able to sign other driver packages a few months ago. However, with this driver package I keep getting Windows security dialog box. Here's the procedure I follow - Create a new cat file using INF2CAT tool. Self sign the driver using a Versign Class 3 Public Primary Certification Authority - G5.cer. Run the microsoft tests on DTM Servers and clients with the devices that use this driver. Create WLK submission package. Self sign the cab file. Submit the package for certification. The catalog file that comes back after successfully passing tests says Name of signer "Microsoft Windows Hardware Comptibility Publisher". When I check the validity of signature using SignTool, it says the signature is vaild. However, when I try to install the driver with new signed catalog file the windows complain. Any ideas? Edit 11/12/2012: Reply to Eugene's comment Thanks for the help, Eugene. Yes. I did sign two other driver packages before. One of them was modified version of WinUSB driver. I am using the same certificate I used when I signed those two driver packages a few months ago. It costs $250 per signing from Microsoft. I would think that Microsoft would complain about it during certification if the certificate is wrong. I use the following command to self sign the CAT file. I don't have to specify the ceritificate name as there's only one certificate in the directory - Signtool sign /v /a /n CompanyName /t http://timestamp.verisign.com/scripts/timestamp.dll OurCatalogFile.cat Below is the result from running Verify command on the Microsoft signed OurCatalogFile.cat C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\x64signtool verify /v "C:\User s\logotest\Documents\serialdriversigning\OurCatalogFile.cat" Verifying: C:\Users\logotest\Documents\serialdriversigning\OurCatalogFile.cat" Hash of file (sha1): BDDF39B1DD95881B462164129758A7FFD54F47D9 Signing Certificate Chain: Issued to: Microsoft Root Certificate Authority Issued by: Microsoft Root Certificate Authority Expires: Sun May 09 18:28:13 2021 SHA1 hash: CDD4EEAE6000AC7F40C3802C171E30148030C072 Issued to: Microsoft Windows Hardware Compatibility PCA Issued by: Microsoft Root Certificate Authority Expires: Thu Jun 04 16:15:46 2020 SHA1 hash: 8D42419D8B21E5CF9C3204D0060B19312B96EB78 Issued to: Microsoft Windows Hardware Compatibility Publisher Issued by: Microsoft Windows Hardware Compatibility PCA Expires: Wed Sep 18 18:20:55 2013 SHA1 hash: D94345C032D23404231DD3902F22AB1C2100341E The signature is timestamped: Tue Nov 06 11:26:48 2012 Timestamp Verified by: Issued to: Microsoft Root Authority Issued by: Microsoft Root Authority Expires: Thu Dec 31 02:00:00 2020 SHA1 hash: A43489159A520F0D93D032CCAF37E7FE20A8B419 Issued to: Microsoft Timestamping PCA Issued by: Microsoft Root Authority Expires: Sun Sep 15 02:00:00 2019 SHA1 hash: 3EA99A60058275E0ED83B892A909449F8C33B245 Issued to: Microsoft Time-Stamp Service Issued by: Microsoft Timestamping PCA Expires: Tue Apr 09 16:53:56 2013 SHA1 hash: 1895C2C907E0D7E5C0292B92C6EA8D0E236F525E Successfully verified: C:\Users\logotest\Documents\serialdriversigning\OurCatalogFile.cat" Number of files successfully Verified: 1 Number of warnings: 0 Number of errors: 0 Thank you!

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  • Copying Columns from Grid to Clipboard in SQL Developer

    - by thatjeffsmith
    There are several ways to get data from a query or a table|view to the clipboard. You know the tried and true, copy and paste. But what if you only want one or more columns, not every column? There are several ways to do this, let’s see if we can’t identify all of them. Write your query to only include the data you want Obvious? Yes. Needed to be said? Definitely. The best tuning tip is to only ask for the data you need, only when you absolutely need it. But let’s look at a few more practical ways to do this. Hide the unwanted columns Mouse right click on an column header. In the context menu, select ‘Columns.’ Hide the columns you don’t want. Copy and paste. WYSIWYG Grids, Hide Columns and Filter Rows Mouse select the columns Obvious, but a bit painful. For a very large dataset, you’ll be holding down the Shift and PageDown buttons – but it works. Remember to use Ctrl+Shift+C to get the column headers with the data. Use the Export Wizard This used to be called ‘Unload’ – agreed, not a great name. So, we changed it. In a grid, right mouse click on the data, and on the context menu, select ‘Export…’ Select your format – I suggest ‘delimited’ or ‘fixed’ for copying data to the clipboard. You can export to the clipboard, yes you can! Click ‘Next.’ Click in the Columns dialog, and choose the columns you want copied. Trim the columns you don't want copied Click ‘Finish.’ Alt or Ctrl tab to your window or application of choice. And Paste! "FIRST_NAME" "LAST_NAME" "Donald" "OConnell" "Douglas" "Grant" "Jennifer" "Whalen" "Pat" "Fay" "Susan" "Mavris" "William" "Gietz" "Alexander" "Hunold" "Bruce" "Ernst" "David" "Austin" "Valli" "Pataballa" "Diana" "Lorentz" "Daniel" "Faviet" "John" "Chen" "Ismael" "Sciarra" "Jose Manuel" "Urman" "Luis" "Popp" "Alexander" "Khoo" "Shelli" "Baida" "Sigal" "Tobias" "Guy" "Himuro" "Karen" "Colmenares" "Matthew" "Weiss" "Adam" "Fripp" "Payam" "Kaufling" "Shanta" "Vollman" "Kevin" "Mourgos" "Julia" "Nayer" "Irene" "Mikkilineni" ... There’s probably at least 2 or 3 more ways, but… But, try these and let me know how we can improve things. I’ve already gotten a request to be able to include the SQL text used to populate the dataset on the the copy to clipboard, and it’s now on our to-do list

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  • Windows Ce 6.0 loses Windows credentials when viewing a web site that's running on Windows 2008 server

    - by gnomixa
    When a user views a web page (with integrated Windows authentication) on WindowsCE 6.0 device, the authentication is lost sporadically. The page being viewed is running on Windows 2008 server. We never had the same issue with Windows 2003 server. The credentials were being asked once and cached for a certain time. My question is: has anything changed in Windows 2008 that doesn't pass the credentials the same way to WindowsCE? The only variable in this scenario is the web server OS - Windows 2003 vs WIndows 2008. Any help would be appreciated, thanks!

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