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  • Chrome is creating duplicate sessions with the same id

    - by dlwiest
    I encountered an issue while I was revising my session library today, and this might be the first time I've ever seen a browser-specific problem on a back end script. I hope somebody can shed some light. Basically how the session library works is: when instantiated, it checks for a cookie called 'id' (in the form of a uniqid result) on the client machine. If a cookie is found, the script checks that and a hashed copy of the user agent string against entries in a session table. If a matching entry is found, the script resumes the session. If no cookie named 'id' is found, or if no matching entry exists in the sessions table, the script creates both. Fairly standard, I think. Now here's the weird part: in Firefox, everything works as predicted. The user gets one session, which he'll always resume upon connection, as long as 24 hours of inactivity has not elapsed. But when I visit the page in Chrome, even though it looks the same and appears to be executing queries in the same order, I see two entries in the session table. The sessions share an agent string, but the ids are different, and timestamp logs indicate that the ghost session is being created shortly (within a second) after the one created for the user. For debugging purposes, I've been printing queries to the screen as they're executed, and this is an example of what I'm seeing when Chrome should be opening one session and is somehow opening two instead: // Attempting to resume a session SELECT id FROM sessions WHERE id = '4fd24a5cd8df12.62439982' AND agent = '9bcd5c6aac911f8bcd938a9563bc4eca' // No result, so it creates a new one INSERT INTO sessions (id, agent, start, last) VALUES ('4fd24ef0347f26.72354606', '9bcd5c6aac911f8bcd938a9563bc4eca', '1339182832', '1339182832') // Clear old sessions DELETE FROM sessions WHERE last < 1339096432 And here's what I'm seeing in the database afterward: id, agent, start, last 4fd24ef0347f26.72354606, 9bcd5c6aac911f8bcd938a9563bc4eca, 1339182832, 1339182832 4fd24ef0857f94.72251285, 9bcd5c6aac911f8bcd938a9563bc4eca, 1339182833, 1339182833 Am I missing something obvious? The only thing I can think of is that Chrome might be creating a hidden session in the background, possibly to crawl the page. If that's the case though, it could become a problem later, when I begin associating active sessions with entries in the users table. I've been looking for possible bugs in my script, but I haven't found anything so far, and everything works as expected in Firefox.

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  • C++, Searching and returning value.

    - by pure841
    For example, lets say I have this string: "Name, Name2, <b>Name3</b>, Name4, <b>Name5</b>" I am trying to get whatever value / name is inside the <b> tags. So when I search the char, I get the following in an array: Name3 Name5 Any ideas? Thanks

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  • regular expression breaking on new line

    - by shyam
    I'm trying to use a regular expression as below: preg_match_all('|<table.*</table>|',$html,$matches, PREG_SET_ORDER); But this is not working, and I think the problem is the new line inside the string $html. Could someone tell me a work around?

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  • regex. How can I match the value between '+' and ':' ?

    - by martin
    I have this string: sometext +[value]:- I would like to match the value(1-3 numerical characters) (with regex, javascript) sometext may contain a +sign if i'm unlucky so I don't wanna end up with matching some +text +value:- I sat up last night banging my head against this, so I would be really glad if someone could help me.

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  • Passing a bool condition to method which I can invoke when I need

    - by dotnetdev
    Hi, I need to pass in a predicate which I can invoke whenever I want (just like a delegate). I am trying to do something like this (I thought Predicate delegate would meet my needs): MyMethod(Predicate,string pred); Called like: MyMethod(s = s.Length 5); I want to write the condition inline BUT invoke it when I want, just like a delegate. How could I do this? Thanks

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  • error on ExecuteNoQuery()

    - by AZIRAR
    hey, i'am trying to update a row in a table using : command.ExecuteNoQuery() it's not giving me an error but it's not updating the row This is my code : Dim req As String = "Update Table Set Id= 5" Dim cmd As New OleDb.OleDbCommand(req, connect()) cmd.ExecuteNonQuery() disconnect() thanks

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  • vb6 Open File For Append issue Path Not Found

    - by Schwayday
    Open App.Path & "\Folder\" & str(0) For Output Seems to get a path not found however if directly before that I do MsgBox App.Path & "\Folder\" & str(0) It Provides the correct directory/filename that I want and if I replace that string with the direct path in quotes it works fine however that won't be very good for other users of my app :( Anyone know why this doesn't work?

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  • C# setting case constant expressions, do they have to follow a specific order?

    - by Umeed
    Say I'm making a simple program, and the user is in the menu. And the menu options are 1 3 5 7 (i wouldn't actually do that but lets just go with it). and I want to make my switch statement using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace DecisionMaking2 { class Program { static void Main(string[] args) { Console.WriteLine("Please choose an option: "); string SelectedOpt = Console.ReadLine(); double Selection = Convert.ToDouble(SelectedOpt); double MenuOption = (Selection); switch (MenuOption) { case 1: Console.WriteLine("Selected option #1"); break; case 2: Console.WriteLine("Selected option #3"); break; case 3: Console.WriteLine("Selected option #5"); break; case 4: Console.WriteLine("Selected option #7"); break; default: Console.WriteLine("Please choose from the options List!"); break; } } } } would that work? or would I have to name each case constant expression the option number I am using? I went to the microsoft website and I didn't quite pick up on anything i was looking for. . Also while I have your attention, how would I make it so the user chooses from either option and because I don't know which option the user will select " double MenuOption = " could be anything, whatever the user inputs right? so would what I have even work? I am doing this all by hand, and don't get much lab time to work on this as I have tons of other courses to work on and then a boring job to go to, and my PC at home has a restarting issue lol. soo any and all help is greatly appreciated. p.s the computer I'm on right now posting this, doesn't have any compilers, coding programs, and it's not mine just to get that out of the way. Thanks again!

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  • Store html into MYSql database

    - by jouzef19
    hello I'm try to store String (that contain html ) to mysql database by using Longtext data type. but its always says "You have an error in your SQL syntax". (note : i tried to store normal text , and its work)

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  • Flex 3: creationComplete alert in repeater... question about getting repeater.currentIndex

    - by Brds
    I have a repeater to call a child... my code is as follows: <mx:Repeater id="projectRP" dataProvider="{projectsHttp.lastResult.project}"> <Block:project id="wholeProject" projectID="{projectRP.currentIndex}" workingTitle="{projectRP.currentItem.workingTitle}" projectTitle="{projectRP.currentItem.projName}" startDate="{textToDate(projectRP.currentItem.startDate)}" projectPositions="{XML(projectRP.currentItem.positions)}" creationComplete="Alert.show(String(projectRP.currentIndex))" /> </mx:Repeater> For some reason, the creationComplete piece isn't s

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  • Words doesn't starts with numbers

    - by pocoa
    I have a string "one two 9three 52eight four", so I only want to get "one two four", because "three" starts with "9" and "eight" starts with "52". I tried: "(?!\d)\w+" but it's still taking the "three" and "eight". I don't want it.

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  • unprotected access to member in property get

    - by Lenik
    I have a property public ObservableCollection<string> Name { get { return _nameCache; } } _nameCache is updated by multiple threads in other class methods. The updates are guarded by a lock. The question is: should I use the same lock around my return statement? Will not using a lock lead to a race condition?

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  • C# (non-abstract) class to represent paths

    - by user289770
    I'm looking for a C# class that represents a file system path. I would like to use it (instead of strings) as the data type of variables and method arguments (top reasons: type safety, concat-proof, logical comparisons). System.IO.Path provides most of the functionality I want, but it is abstract. System.IO.FileInfo, as I understand, performs IO operations to do its job. I only want a wrapper for the path string. Thanks!

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  • .NET regular expression

    - by vert
    How would I write a regular expression (C#) which will check a given string to see if any of its characters are characters OTHER than the following: a-z A-Z Æ æ Å å Ø ø - '

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  • How to get proper text name of typeid()

    - by Vincenzo
    My code: namespace test { class MyTest { }; } MyTest a; cout << typeid(a).name(); This is what I see (i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5659)): N4test6MyTestE Is there any platform-independent way to get something like test::MyTest instead of this string?

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  • What useful minor features of C# 4.0 can you list?

    - by sashaeve
    C# 4.0 has a lot of new major features such as dynamic type, covariance and contravariance, named arguments etc. But C# 4.0 contains new minor (but useful) changes such as TryParse method for TimeSpan, Enum, Guid data types, String.IsNullOrWhiteSpace, System.IO.Stream.CopyTo etc. What other minor and useful features of C# 4.0 can you list?

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  • Remove all arbitary spaces before a line in Vim

    - by Farslan
    I'v written a plugin where it comes to parsing a XML tag. The content inside the tag is indented and when i copy the parsed string into the file it's gettting like: Example line This is part of the parsed line Thats goes one End of line What I want is to remove all spaces in front of these lines, the final text should be Example line This is part of the parsed line Thats goes one End of line I've tried to use = but it doesn't work the way U want. How can I do that with minimal key strokes ?

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  • Fastest way to add prefix to array keys?

    - by Kirzilla
    Hello, What is the fastes way to add string prefixes to array keys? was $array = array( '1' => 'val1', '2' => 'val2', ); needed $array = array( 'prefix1' => 'val1', 'prefix2' => 'val2', ); According to http://www.phpbench.com/ (see Modify Loop) I should use "for" statement, but probably there is more elegant way? Thank you.

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  • How can I find the boundaries of a subset of a sorted list?

    - by Alex
    I have the following dilemma: I have a list of strings, and I want to find the set of string which start with a certain prefix. The list is sorted, so the naive solution is this: Perform binary search on the prefixes of the set, and when you find an element that starts with the prefix, traverse up linearly until you hit the top of the subset. This runs in linear time, however, and I was wondering if anyone can suggest a more efficient way to do it.

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