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  • Referer is passed from HTTPS to HTTP in some cases... How?

    - by ravisorg
    In theory browsers do not pass on referer information from HTTPS to HTTP sites. And in my experience this has always been true. But I just found an exception, and I want to understand why it works so I can use it as well. Search for "what is my referer" on https://www.google.ca/ eg: https://www.google.ca/search?q=what+is+my+referer There are a few sites that will show referer. They all seem to "work" when they shouldn't. For example, click the www.whatismyreferer.com one. I get: Your referer: https://www.google.ca/ Note that sometimes, rarely, I get "no referer" as the result. Go back and click the link again and it'll "work" the next time. This should not happen. www.whatismyreferer.com is a non-HTTPS site. The referer header should not be being passed, but it is. What's going on here, and how can I do the same from my HTTPS site to the HTTP sites I'm linking to?

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  • I want to read a big text file

    - by Rozer
    I want to read a big text file, what i decided to create four threads and read 25% of file by each one. and then join them. but its not more impressive. can any one tell me can i use concurrent programming for the same. as my file structure have some data as name contact compnay policyname policynumber uniqueno and I want to put all data in hashmap at last. thanks

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  • C++ Libraries similar to C#?

    - by cam
    I'm coming to C++ from a .Net background. Knowing how to use the Standard C++ Libraries, and all the syntax, I've never ventured further. Now I'm looking learning a bit more, such as what libraries are commonly used? I want to start getting into Threading but have no idea to start. Is there a library (similar to how .net has System.Threading) out there that will make it a bit easier? I'm specifically looking to do Linux based network programming.

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  • What's the right Java generic for a collection of elements with unique addressable indices?

    - by Rocreex
    I'm on my way to programming a database application and in our course we are told to implement a library of elements using one of the Java Collections. Each of the elements has a unique ID with which it's supposed to be addressed. Now I am wondering how this can be done. I though about using a ListArray but this won't work because the only way of addressing List elements is through the index which you can't control. Do you have some advice for me?

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  • linux, LD_PRELOAD error

    - by user286215
    Hello, i am new in programming under linux and trying to get working this code: http://scaryreasoner.wordpress.com/2007/11/17/using-ld_preload-libraries-and-glibc-backtrace-function-for-debugging/ but getting error: "ERROR: ld.so: object 'libwrap_ioctl.so' from LD_PRELOAD cannot be preloaded: ignored." what can cause it? system - Archlinux, kernel 2.6.32 thank you for answers upd1: "Check with ldd libwrap_ioctl.so if some dependency of this library is missing." checked. no, i have all needed libraries

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  • Extracting a sub-string in C#

    - by hero
    I am new to c# programming and I want to ask a question. How can I get the value in () and store it in another string. example: I have string s1="here there (hi)"; How can I get s2="hi"; the () will always be at the end of the sentence (never at first or in between).

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  • What Design Pattern is this?

    - by 01
    I know that everything we do in programming can be described as design pattern(even abstract method has design pattern called template method) public class Guicer extends AbstractModule { private static Injector injector = Guice.createInjector(new Guicer()); public static void setInjector(Injector injector) { Guicer.injector = injector; } public static T getInstance(Class c) { return injector.getInstance(c); } @Override protected void configure() { } } What design patterns are used in this code?

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  • What is the 'accumulator in HQ9+?

    - by Koning Baard XIV
    I was just reading a bit about the HQ9+ programming language ( http://esolangs.org/wiki/HQ9 , http://en.wikipedia.org/wiki/HQ9%2B and http://www.cliff.biffle.org/esoterica/hq9plus.html ), and it tells me something about a so called 'accumulator' which can be incremented, but not be accessed. Also, using the + doesn't manipulate the result: code H+H result Hello World Hello World Can anyone explain me how this works, what this does and if it even makes any sense? Thanks

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  • Data Structure Used For SMS Messages In Android

    - by Greenhouse Gases
    Does anybody know what data structures are used to the store messages in an SMS client app, and whether there is an existing API for this. I was perhaps looking at implementing a link list for the purpose but if the work has already been done in an API then perhaps it would be unnecessary to commit time to the task that could be spent programming other parts. Many thanks

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  • Book on C++ for understanding advanced concepts

    - by Invincible
    What is good book for industry level C++ programming? I am not looking for a beginners C++ book that talks about datatypes and control structures. I am looking for a more advanced book. For example, how to build system applications using C++. Any kind of guidance will be very helpful.

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  • Where to place a debug log files for my daemon app?

    - by sasayins
    Hi, I am using C language and Linux as my programming platform. I am learning how to create a daemon, and I want to create a log file so that I write a debug message in my daemon. My question is where should I put the log file in my system. Should I put it in the var folder? Please advice. Many thanks.

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  • How to implement a timer callback that executes in the same execution context

    - by Waldorf
    Some programming environments like C++ builder have timer components with a callback function which executes in the same execution contexts as where the timer object is created. I was wondering how to do something similar in plain c++ with threading. Or are there any other ways to have a callback which is periodically called to perform some task and runs in the same execution context as the calling thread?

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  • How to create a screensaver?

    - by Dave
    Which is the best programming language to use for creating a screensaver? I am thinking of creating a screensaver to showcase projects i have done before for self satisfaction. How should i go about it? Thanks

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  • How can I document and automate a system's configuration?

    - by Diomidis Spinellis
    Having a system's configuration represented by its current state is risky, inefficient, and opaque. At some point you may be left with an unsupported system and no upgrade path. Then configuring a new system compatible with the old is a process or trial and error. Furthermore, if at some point the system is damaged the only option is to go back to the most recent full backup, and try to remember what changes followed from that point. Also, the only way to create a system compatible with the original is through a complete dump/restore. Finally, in such a setup there's no way to know how you solved a particular problem; the only thing you can do is to look at the corresponding configuration files and try to guess what you changed to achieve the desired effect. Currently for each system I maintain, I keep a log file where I record all system administration activity, starting from the installation: installation options, added packages, changes in configuration files, updates, problem fixes etc. In theory this allows me to (manually) replay all changes to arrive at the current state, or to unroll an erroneous change by executing the reverse commands. However, this process is also inefficient, error-prone, and relies on human judgment. Another thing I've tried is to put /etc configuration files under version control with git. This helps me document the changes automatically and also apply them on a clean setup. But it's not without problems: git has to run under sudo, passwords and private keys may be stored in the repository, installed packages can't be meaningfully tracked, and git will have a fit if I try to extend this approach to all the system's directories. I've also thought about performing all changes through shell scripts or makefiles, but I think this process will require a lot of effort and will be fragile. Are there some better methods or tools that I'm missing?

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  • C++ book for a c# developer

    - by Eldila
    I am a c# developer which finds himself having to relearn c++. The last time I programmed in c++ was in school and am looking for good books as a refresher. I want something that assumes previous programming exposure and gets straight to the point. Is there a book similar to K&R for c++? I know the language is bloated so a book that covers a subset of c++ would be ideal.

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  • question about heapsearch order

    - by davit-datuashvili
    ia have meet following problem suppose we have sorted array of size 2^k-1 where k is given number we should copy this array into heapsearch array b the elements in odd positions of a go in order into last half of the positions of b positions congruent to 2 modul0 4 go into b's secodn quarter and so on this is not homework and please nobody tag it as homework it is from programming pearls please any ideas

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