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  • python and paramiko: how to check if end of ssh tunnel is still alive and reestablish if not?

    - by Christian
    Hello all, I'm trying to achieve the following: I have two hosts A and B. A establishes a remote port forwarding tunnel on B, i.e. B is the one a port is forwarded on to some where else and A is the one that sets up the tunnel. I tried the script rforward.py that ships with paramiko and it works very well so far. (I'm running rforward.py on A, which connects to B and forwards a port of B to somewhere else) However, when B is shutting down, A doesn't seem to recognize it. I'd rather like A to recognize that B is down and to try to reestablish the connection periodically in case B comes up again. Is there a way to do this? Thanks.

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  • Calculating co-ordinate of a point on a path given a distance

    - by Alex
    I'm working on a project that surveys the condition of a road or highway using a calibrated trip computer connected to a rugged-PC. An operator keys in defect codes as they travel along a pre-defined route. I need to show an indicator on the map screen that shows the vehicles current position, taking into account the distance data from the trip computer. I know the exact lat lon co-ordinates at the starting point of each section of road, and the road is made up of a series of points. The question is: how can I calculate the lat lon co-ordinates of the vehicle assuming that it has continued on the route and traveled a certain distance (e.g. 1.4km). The co-ordinates would be 'locked onto' the road line, as shown in blue on the diagram below. Thanks, Alex

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  • Can I detect if higher subview has been touched?

    - by Kevin Beimers
    I've got a big UIView that responds to touches, and it's covered with lots of little UIViews that respond differently to touches. Is it possible to touch anywhere on screen and slide around, and have each view know if it's being touched? For example, I put my finger down on the upper left and slide toward the lower right. The touchesBegan/Moved is collected by the baseView. As I pass over itemView1, itemView2, and itemView3, control passes to them. If I lift my finger while over itemView2, it performs itemView2's touchesEnded method. If I lift my finger over none of the items, it performs baseView's touchesEnded. At the moment, if I touch down on baseView, touchEnded is always baseView and the higher itemViews are ignored. Any ideas?

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  • Using axWebBrowser control to capture page request and postdata.

    - by Arjo
    I'm writing a small utility to capture all requests made to a web server from a windows application using the axWebBrowser control. So far I have the following working, as the user traverse the website clicking on links, posting forms etc I capture the webpage and the data being send to the server to request the next page. Where I run into a stumbling block is when it comes to Ajax calls. There are number of drop down boxes that filter down the selection as the user types in the search term, I would like to capture the page/script that is called and the data being send. Any hint, advice would be greatly appreciated.

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  • Safari ignores input type="file" on server post

    - by Jon
    I have a real problem with a classic ASP page. The page allows the user to upload a document and save it to the database. The intial page posts to another asp page which saves down to the db. This works on IE and Firefox. However on Safari it fails. I've debugged the problem and it boils down to the fact that of all the controls that the server page has access to, only 1 control is missing. This happens to be this: <input type="file" size="40" id="myfile" name="myfile" /> So I'm wondering why safari would decide to not give me access to this control (using asp's Request("") ) and why it works in FF and IE. I have some debug code which writes out all controls and it doesn't see this control. p.s. I hate Web development

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  • maintain dialog center with dynamic content

    - by mcgrailm
    I would have a dialog with the following $("#statusbox").dialog({ autoOpen: false, bgiframe: true, modal: true, width: 'auto', height:'auto', title:"Check Order Status", buttons: { Find: function() { get_status(); }, Close: function() { $(this).dialog('close'); } } }); and when the user hits the find button it runs ajax and returns orders to the dialog and it get dynamically re-sized but it only extends the box down. Is there way to make the box extend up and down so that the dialog remains centered ? also if there was enough content then it could potentially go beyond the bounds of the page so I would think I could use a max height to prevent that but what do I do if they re-size the window ? thanks for any help

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  • people picker control inside gridview template field with ajax update panel applied SharePoint 2010

    - by user1434450
    In my page I have drop down control, grid view. Inside the grid view in template field I have people picker control. When ever I change the drop down value from 'Select' to another I am displaying my grid view with people picker. Everything is working fine. But after applying 'update panel', whenever I change the drop down value, people picker control is not working inside the grid view. <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional"> <ContentTemplate> <asp:GridView ID="gvDirectory" runat="server" AutoGenerateColumns="false" ShowHeader="false" onrowcommand="gvDirectory_RowCommand" onrowdeleting="gvDirectory_RowDeleting" onrowdatabound="gvDirectory_RowDataBound" BorderWidth="0"> <Columns> <asp:TemplateField> <ItemTemplate> <asp:CheckBox ID="chkselect" runat="server" Width="20px" AutoPostBack="true" oncheckedchanged="chkselect_CheckedChanged"/> </ItemTemplate> </asp:TemplateField> <asp:TemplateField> <ItemTemplate> <asp:HyperLink ID="lnkcategory" runat="server" Text='<%# Eval("Title") %>' Target="_blank" NavigateUrl='<%# Eval("URL") %>' Width="200px" onclick="ShowAwesomeHelloPageInDialog(this);return false;"></asp:HyperLink> <asp:Label ID="lblvalue" runat="server" Text='<%# Eval("value") %>' Visible="false"></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField> <ItemTemplate> <SharePoint:PeopleEditor ID="Assignedusers" runat="server" AllowEmpty="false" MultiSelect="true" Width="250px" BorderColor="#559CD7" Height="20px" SelectionSet="User,SPGroup" Rows="2" PlaceButtonsUnderEntityEditor="false" EnableViewState="true" /> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Delete"> <ItemTemplate> <asp:ImageButton ID="btnDelete" runat="server" CommandArgument='<%# Container.DataItemIndex%>' ImageUrl="~/_layouts/images/EditTaskPage/Delete.png" CommandName="Delete" Text="Delete" Height="26px" Width="26px"/> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> </ContentTemplate> <%--<Triggers> <asp:PostBackTrigger ControlID="ddlCategory" /> </Triggers>--%> </asp:UpdatePanel> <script type="text/javascript"> _spOriginalFormAction = document.forms[0].action; _spSuppressFormOnSubmitWrapper = true; </script> how can I solve this problem.. thanks in advance....

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  • What is the difference between building a WSDL in Eclipse and using WCF?

    - by myermian
    I'm somewhat familiar with WCF in that I can build Web Services in VS.Net ... I understand some of the concepts... But, the other day I cam across this option in Eclipse (I also use Java to code) to create a WSDL. Playing around with it it looks great since it has a GUI method of building itself. I guess I just wanna know what the difference is. 1) Are they different technologies like WSDL vs WCF? Or, is it that WCF uses WSDLs? 2) I read that WSDLs are a top-down approach... so what about WCF, is that top-down or is that bottom-up? 3) Will this WSDL in Eclipse actually be able to generate CSharp code for my server and client efficiently, or will it require a lot of fixing?

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  • How does operating system software maintains time clocks?

    - by Neeraj
    Hi everyone, This may sound a bit less relevant but I couldn't think of a better place to ask this question. Now consider this situation, you install an OS on your system, set the timezone and time, do some stuff and turn it off. (Note that there is no power going in to the computer). Now next time (say after some hours or days) you turn it on again, and you see the updated time. How is this possible even when my computer is not connected to the internet and was consuming no power during the period it was down.(Is there some kind of hardware hack?) please clarify!

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  • how to use a pear package!?

    - by Naughty.Coder
    I want to use HTTP_DOWNLOAD to manage my downloads ,, I have never used PEAR before !! HTTP_DOWNLOAD depends on many other packages , I downloaded them and the ones they , in turn , depend on and this is the structure I made : Download.PHP <---HTTP_DOWNLOAD MAIN FILE Header.php <--- HTTP_HEADER MAIN FILE PEAR.php PEAR5.php Type.php <--- MIME_Type >Type <---- FOLDER - Extension.php MIME_Type File - Parameter.php MIME_Type File assuming that Http_DOWNLOAD depends on : * PHP 4.2.0 * PEAR 1.4.0b1 * PEAR * HTTP_Header * pcre extension * Archive_Tar (Optional) * Archive_Zip (Optional) * MIME_Type (Optional) * mime_magic extension (Optional) * pgsql extension (Optional) and I edited the paths inside each file to reflect this structure , and I tried to run the following code : <?php require_once 'Download.php'; $params = array('file'=>'file.zip'); $down = new HTTP_Download($params); $down->send(true); ?> nothing happens !! I also got a hard time trying to figure how to use the class and I think this code should work .. but not sure ! Help Please !

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  • Choosing Merge Direction

    - by tbreffni
    Consider a simple source-control layout, with a trunk representing a future release in development and a single branch representing a release currently in production. When a bug is discovered that needs fixed in both branches, should the change be made first to the trunk then merged down to the branch, or made first to the branch then merged up to the trunk? Typically I've made the fix first in the trunk then merged downwards, however there is an increased risk this way that future new features get merged down accidentally. What has worked best in your experience?

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  • VBA: How to refer to the right worksheet

    - by stanigator
    Sub Macro1() ' ' Macro1 Macro ' ' Worksheets("Drop-down").Select n = Cells(1, 1).End(xlDown).Row For i = 1 To n ActiveSheet.Cells(i, 2).Select If Worksheets("Misc").Cells(2, i).Value <> "" Then If Worksheets("Misc").Cells(3, i).Value <> "" Then Set validationRange = Range(Worksheets("Misc").Cells(2, i), Worksheets("Misc").Cells(2, i).End(xlDown)) Else Set validationRange = Worksheets("Misc").Cells(2, i) End If With Selection.Validation .Delete .Add Type:=xlValidateList, AlertStyle:=xlValidAlertStop, Operator:= _ xlBetween, Formula1:=validationRange.Address .IgnoreBlank = True .InCellDropdown = True .InputTitle = "" .ErrorTitle = "" .InputMessage = "" .ErrorMessage = "" .ShowInput = True .ShowError = True End With End If Next i End Sub The lines after ActiveSheet.Cells(i,2).select within the for loop is not referring to the correct worksheet I want when I rechecked the settings for the validation drop-down menu. What is the easiest way of correcting this setback? Thanks in advance.

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  • chat website in jsp/servlet

    - by akshay
    I want to devlelop a chat website using JSP/Servlets and Tomcat. I have following questions: Can the website handle load (1000 people at one time) without slowing down? Will it cause the website to slow down? What is the ideal server configuration for this kind of website? Note that I don't have a huge budget to host. How can I implement server push? Will PHP or JSP be ideal for such website?

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  • Subversion commit conflict

    - by dvanaria
    I use Subversion mainly to synchronize work between two computers I use on a daily basis (and as a backup, since I have a checked-out copy of the repository on each computer). I keep the main repository on a USB flashdrive. I recently came across the following error when trying to commit a current working copy (and both working copies, one on each computer, are identical now): ! C career\UVaOnlineJudge\Log.doc local delete, incoming delete upon update ! C career\UVaOnlineJudge\102\Main.class local delete, incoming delete upon update Without going into more detail about what I did to get the repository out of synch, my question is more general. What does “local delete, incoming delete upon update” mean? What is Subversion expecting that I’m not giving it?

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  • jquery slideUp() and slideDown() problems

    - by nhoss2
    Hello, I am very crap at jquery, and im having some trouble with the slideUp() and slideDown() animations. I have been working on a vCard design similar to tim van damme's site. here is a the link to the design: link. When you click on the portfolio or work button, the text or image appears first before the div finishes sliding down. I would like the div to slide down first and then show the text... This currently works when you click on the contact button or the home button on the top navigation bar, but does not work for the portfolio button and the work button. I have a hunch that this may not even be a jquery problem, and that its just my bad css code, but I have skimmed through the css code, and changed things like z-index, but that hasnt worked.

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  • GWT combobox not displaying correctly

    - by James
    Hi, I am using GWT with GWT-EXT running in glassfish. I create 2 combo boxes as follows: import com.extjs.gxt.ui.client.widget.form.ComboBox; import com.extjs.gxt.ui.client.widget.form.SimpleComboBox; this.contentPanel = new ContentPanel(); this.contentPanel.setFrame(true); this.contentPanel.setSize((int)(Window.getClientWidth()*0.95), 600); this.contentPanel.setLayout(new FitLayout()); initWidget(this.contentPanel); SimpleComboBox<String> combo = new SimpleComboBox<String>(); combo.setEmptyText("Select a topic..."); combo.add("String1"); combo.add("String2"); this.contentPanel.add(combo); ComboBox combo1 = new ComboBox(); combo1.setEmptyText("Select a topic..."); ListStore topics = new ListStore(); topics.add("String3"); topics.add("String4"); combo.setStore(topics); this.contentPanel.add(combo1); When these are loaded in the browser (IE 8.0, Firefox 3.6.6 or Chrome 10.0) the combo boxes are shown but don't have the pull down arrow. They look like a text field with the "Select a topic..." text. When you select the text it disappears and if you type a character and then delete it the options are shown (i.e. pull down is invoked) however, there is still no pull down arrow. Does anyone know what the issue might be? Or how I can investigate further? Is it possible to see the actual HTML the browser is getting, when I View Page Source I only get the landing page HTML. As an additional I also have a import com.google.gwt.user.client.ui.Grid that does not render correctly. It is in table format but has no grid lines or header bar etc. Cheers, James

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  • Pros and Cons on where to place business logic: app level or DB

    - by Juri
    Hi, I always again encounter discussions about where to place the business logic: inside a business layer in the application code or down in the DB in terms of stored procedures. Personally I'd tend to the 1st approach, but I'd like to hear some opinions from your part first, without influencing you with my personal views. I know there doesn't exist a one-size-fits-all solution and it often depends on many factors, but we can discuss about that. Btw, we are in the context of web applications and our current approach is to have UI layer which accepts UI input and does a first, client-side validation Business layer with a number of service-classes which contains the business logic including validation for user input (server-side) Data Access Layer which calls stored procedures from the DB for doing persistency/read operations Many people however tend to move the business layer stuff (especially regarding the validation) down to the DB in terms of stored procedures. What do you think about it? I'd like to discuss.

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  • Android bluetooth socket error

    - by ashwini
    I am using backport bluetooth api on android 1.6. I am using Google Bluetooth Chat sample app for testing. The app works fine in normal scenarios. In a scenario, when I try to connect to paired device which is in off state, I get following error. 01-04 09:00:11.629: ERROR/BluetoothEventLoop.cpp(84): onGetRemoteServiceChannelResult: D-Bus error: org.bluez.Error.ConnectionAttemptFailed (Host is down) 01-04 09:00:11.729: DEBUG/dalvikvm(128): GC freed 4535 objects / 256008 bytes in 296ms 01-04 09:00:21.880: ERROR/bluetooth_RfcommSocket.cpp(1433): connect error: Host is down (112) But it sets the state as connected. The app is unable to catch the exception. Why does it happen? Or is it the case with backport api? Any help is appreciated as I am struggling a lot to get things run fine.

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  • How should I move my code from dev to production?

    - by Teddy
    I have created a PHP web-application. I have 3 environments: DEV, TEST, PROD. What's a good tool / business practice for me to move my PHP web-application code from DEV to TEST to the PROD environment? Realizing that my TEST environment still only connects to my TEST database; whereas, I need to PROD environment to connect to my PROD database. So the code is mostly the same, except that I need to change my TEST code once moved into PROD to connect to the PROD database and not TEST database. I've heard of people taking down Apache in such away that it doesn't allow new connections and once all the existing connections are idle it simply brings down the web server. Then people manually copy the code and then manually update the config files of the PHP application to also point to the PROD instance. That seems terribly dangerous. Does a best practice exists?

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  • SQL server 2005 remote connection problem, cannot solve it help please thank you

    - by user287745
    note:- if this question does not fit this site please do not just close it but also redirect the question to the fitting sister site, thank you" the steps taken and the error are mentioned please help, i am stuck here! installed sql server 2005 express on both computers installed sql server management studio express on both computers ran each management studio and connect to instance sqlserver using windows authentication ( one computer connection example "A-63A9D4D7E7834\SQLEXPRESS" ) created a database in the databases named as "test1" created a few tables with data saved and exit. did everything what this site says " How to configure SQL Server 2005 to allow remote connections" [add h t t p here as spam prevention] ://support.microsoft.com/kb/914277/en-us" but i have just disable the firewalls completely :turn off connecting to A-63A9D4D7E7834 started "SQL Server Management Studio Express" on computer A-63A9D4D7E7834 sever name: "ALL-E425BE6C41D\SQLEXPRESS" authentication: "windows authentication" and CONNECT I GET THE FOLLOWING ERROR Cannot connect to ALL-E425BE6C41D\SQLEXPRESS. ADDITIONAL INFORMATION: Login failed for user 'ALL-E425BE6C41D\Guest'. (Microsoft SQL Server, Error: 18456) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=18456&LinkId=20476 BUTTONS: OK HELP

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  • Basic Login Script using php and mysql inquiry

    - by Matt
    Attempting to write a check for a login script to see if the username is available. Would the best way to write this query be to check if isset(!_POST[]) for both values (nick and pass) then connect to database WHERE the mysql database for the usernick requested return the user id if the usernick exists evaluate if isset($id) to see if the user name is taken and use that to continue to creating an entry Does this logically sound like a method to check for login without using excessive code sorry for not posting the code, it is on another computer and this computer is locked down by my administrator at work... Also, is there another way to evaluate if a value exists in the database? For instance, instead of setting $id to the return value of the mysql database can i just ping the mysql database for the information and have it return a Boolean result so I am not putting out any user information. Thanks, Matt

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  • Memcache localhost connection oddity

    - by MatW
    When I try to connect to memcache using this code: $memcache = new Memcache; $memcache->connect('localhost', 11211) or die ("Could not connect"); The call dies with the "Could not connect" error, but if I use localhost's IP: $memcache = new Memcache; $memcache->connect('127.0.0.1', 11211) or die ("Could not connect"); It works! So what's my problem? Well, this new computer is the only development environment I've setup that's been sensitive to that difference. I'm not about to go changing the settings on any code for what seems to be a computer specific issue, but I can't figure out what could be causing this behaviour... Any ideas? I'm running XP, memcached 1.2.4, and wampserver 2. I've checked the hosts file and it does have an entry for localhost.

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  • How do we, as a community, help encourage programming in public schools? (Or state Schools for the U

    - by NoMoreZealots
    PRIMARY MOTIVATION My office gets involved with the "First Robotics" competitions and one thing that lingers year to year is the students typically have no preparation for doing even simple programming as part of the public schools system. While the science classes provide some basic grasp of mechanical and electrical concepts, by in large computer programming gets no coverage from the curriculum. (This my be different in other areas of the country/world.) What makes it worse is there is only a short period of time you have to prepare the student's and help them design the robot. Talking to some professors from local colleges, it's a problem because you can't assume even the most basic understanding for freshman CS majors. Languages like Python, Lua and BASIC are simple enough for at least high school level students, if not younger. SCOPE So how do you get public schools to support a programming, at least to the level of "Try it in BASIC" examples that used to be at the end of a chapter in my Algebra book? At least enough to prepare them for event's such as the FIRST Robotic competitions. Which the primary objectives are to teach problem solving and team work, and to possible foster an interest in Math, Science and Engineering in general. (Not force feed to them, as some people her seem to be implying.) Edit: Why teach kids: (Since 2000 CS enrollment in US colleges has decreased by 70% while college enrollment has increased, this is a PROBLEM.) Saying there is no value in teaching someone programming in Jr./High school because they might think "they know programming." Is like saying there's no value in teaching High school science and physics, because they might decide they "know physics." Leading to abuse like: "I passed a high school physics class, I'm going to develop a Unified Quantum Gravitational Theory." Better Prepared students are better students. Instead it would allows college programs to raise the bar on the entry level courses, allowing students to be weeded out based on their understanding of more advanced material. Plus people who did poorly in that in topic in High school aren't as likely to say "I think there's money in computer's so I'll computer science." Plus if people take it in high school and decide THEN that it's not for them, it's better than them wasting their money to PAY a college to figure that out. The result is that people who take the degree are more likely to succeed and be there for the RIGHT reasons. (i.e. It's what they REALLY want to do. And that's REALLY the key to being good at anything.) Programming is like anything else, the more practice and genuine interest you have the better you get. If you start them later, they get less practice. The earlier give them the opportunity to start, the more practice they will get. All other things equal, the more practice the better the programmer.

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  • Increasing number once per mouse click/key press in XNA

    - by DMan
    This has been bothering me lately- when I use some code like below to increase selection every mouse click: if (m.LeftButton == ButtonState.Pressed) currentSelection++; Then currentSelection increases by a ton, simply because this code is in my Update() function and by design, runs every frame and so increases currentSelection. There is almost no chance you can click and release fast enough to prevent currentSelection from increasing more than one. Now my question is what I should do to make it so everytime I click the mouse down once, it only increases currentSelection once until the next time I click down again.

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