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• How to reduce cpu and ram usage?

  - by Hellboy

  i am going to "read" (video/big) files from server (shared environment) to clients (webbrowsers) via php and would like to know first if there is a way to reduce cpu and ram usage somehow (as i have those limited). thanks.

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• load domain specific content

  - by wayne

  Let's say I have an app sitting at myapp.com The app has clients or users that are situated here myapp.com/jonny myapp.com/sally I want to allow users to point their own domain to my server (A record) and load their specific content. No redirects or anything. jonnysapp.com -> myapp.com/jonny So somehow my server needs to detect where the request is coming from and set the client... correct?

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• Is there a standard format for email addresses in MIME messages?

  - by George Edison

  When I get an email, there is a header From: in the actual MIME message that specifies who the sender of the email is. I notice that the format of that particular header is sometimes: From: [email protected] or From: Human Readable Name <[email protected]> Are these the only ways that standard clients format the From: header? Or are there others I should be aware of?

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• Association : client.order , ok but how do you retrieve the client from the order ?

  - by Sylario

  I have read the following rails guide : http://guides.rails.info/active_record_querying.html in there exemple a client has many orders and orders belong to clients. They explain how to find a lot of stuff from client. But if i want all orders from yesterday, with the corresponding client name, how do i retrieve the client from an order?

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• Is there such a thing as a reverse CDN? (content 'retrieval' network)

  - by Danny

  Hi All Our clients upload a serious amount of data (2GB) from all over the world and we'd like to do our best to make that as painless as possible. Just as a CDN has download servers in various locations, we'd like upload servers. Any experience or thoughts?

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• unnecessary vertical scrollbar in ie6

  - by tirso

  hi to all does any could help me how to remove unnecessary scroll bar in ie6. thanks in advance here is my url http://webberzsoft.com/clients/csslayouttest/template_new.php

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• How to achieve Database Synchronization in Adobe Air with out LCDS

  - by Thirst for Excellence

  i designed one application which pulls data from DB once its stated,if all the clients pulls data at a time from server, there is a lot of bandwidth, and one more worse case is one client may close & open his application many time a days, so there is a lot of bandwidth consumption on serve... Is there any database Sync technique to implement in AIR desktop application ? Please if anybody know please let me know..plz dont suggest LCDS(this is bit cost) Advance Thanking, Cheers, vasu

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• how to cast c++ smart pointer up and down

  - by user217428

  two clients communicate to each other on top of a message layer in the message body, I need include a field pointing to any data type From client A, I send the field as a shared_ptr to the message layer. I define this field as a shared_ptr in the message layer. But how can I convert this field back to shared_ptr in client B? Or should I define shared_ptr in message layer as something else? Thanks

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• FlexScroll and IFRAMES

  - by Neurofluxation

  Hey, I was wondering whether there is a way to use FlexScroll (JavaScript custom image based scrollbars) with IFRAMES instead of the DIVS. Yes, I know scrollable DIVS are better than IFRAMES. This is my clients requirement though. Cheers.

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• How to solve following issues?

  - by lakshmi

  hi im using postgresql database, I want to insert my datas into database,but whenever i run the server,it was display the following Error. Error:org.postgresql.util.PSQLException: FATAL: sorry, too many clients already How to solve this problem.My server.properties file is following. Sever.properties File: serverPortData=9042 serverPortCommand=9078 simocoConnectionURL=jdbc:postgresql://127.0.0.1:5432/vTrack?user=postgres&password=postgres dst=1 DatabaseName=vTrack ServerName=127.0.0.1 User=postgres Password=admin MaxConnections=90 InitialConnections=80 PoolSize=100 MaxPoolSize=100 KeepAliveTime=100 SimocoPoolSize=120 SimocoMaxPoolSize=120 SimocoKeepAliveTime=100 PortNumber=5432 Logging=1 Thanks.

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• Is it possible to invoke SOAP request in JavaFX?

  - by isaacniu

  I've been spending considerable time on this, while finally realized that most articles are teaching how to access RESTful web services but not SOAP. Is this possible? I mean can I write my own clients codes to invoke SOAP request to remote web server?

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• Client server architecture question

  - by Shane Fulmer

  I am working on a client server system, and am running into issues where multiple clients are executing an action at the same time. We are able to solve this by locking on the critical section of code, which ensures that the first client will complete the action before the second client enters the code block. My question is this: our server is also clustered, so multiple instances of the server itself can exist, which recreates the same problem as before. How could we solve this problem? Thanks!

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• How can I create and use a web service in public but still restrict its use to only my app?

  - by Glenn

  I'm creating a web service with create/update/delete calls. But for now I'd like to restrict use of it on my own web app and no other clients. How can I have clear text javascript code that makes these calls but still be confident the credentials won't be used elsewhere? My idea is to use server side generated nonces for each request. But I am open to different ideas you guys may have. Thanks.

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• SSL Authentication with Certificates: Should the Certificates have a hostname?

  - by sixtyfootersdude

  Summary JBoss allows clients and servers to authenticate using certificates and ssl. One thing that seems strange is that you are not required to give your hostname on the certificate. I think that this means if Server B is in your truststore, Sever B can pretend to be any server that they want. (And likewise: if Client B is in your truststore...) Am I missing something here? Authentication Steps (Summary of Wikipeida Page) Client Server ================================================================================================= 1) Client sends Client Hello ENCRIPTION: None - highest TLS protocol supported - random number - list of cipher suites - compression methods 2) Sever Hello ENCRIPTION: None - highest TLS protocol supported - random number - choosen cipher suite - choosen compression method 3) Certificate Message ENCRIPTION: None - 4) ServerHelloDone ENCRIPTION: None 5) Certificate Message ENCRIPTION: None 6) ClientKeyExchange Message ENCRIPTION: server's public key => only server can read => if sever can read this he must own the certificate - may contain a PreMasterSecerate, public key or nothing (depends on cipher) 7) CertificateVerify Message ENCRIPTION: clients private key - purpose is to prove to the server that client owns the cert 8) BOTH CLIENT AND SERVER: - use random numbers and PreMasterSecret to compute a common secerate 9) Finished message - contains a has and MAC over previous handshakes (to ensure that those unincripted messages did not get broken) 10) Finished message - samething Sever Knows The client has the public key for the sent certificate (step 7) The client's certificate is valid because either: it has been signed by a CA (verisign) it has been self-signed BUT it is in the server's truststore It is not a replay attack because presumably the random number (step 1 or 2) is sent with each message Client Knows The server has the public key for the sent certificate (step 6 with step 8) The server's certificate is valid because either: it has been signed by a CA (verisign) it has been self-signed BUT it is in the client's truststore It is not a replay attack because presumably the random number (step 1 or 2) is sent with each message Potential Problem Suppose the client's truststore has certs in it: Server A Server B (malicous) Server A has hostname www.A.com Server B has hostname www.B.com Suppose: The client tries to connect to Server A but Server B launches a man in the middle attack. Since server B: has a public key for the certificate that will be sent to the client has a "valid certificate" (a cert in the truststore) And since: certificates do not have a hostname feild in them It seems like Server B can pretend to be Server A easily. Is there something that I am missing?

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• Creating a "permanent" Cocoa object

  - by quixoto

  I have an object factory that hands out instances of certain "constant" objects. I'd like these objects to be protected against bad memory management by clients. This is how I've overridden the class's key methods. Am I missing anything (code or other considerations)? - (id)retain { return self; } - (NSUInteger)retainCount { return UINT_MAX; } - (void)release { // nothing. }

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• Do you use any out-of-browser Silverlight application?

  - by Adal

  I know a lot of Adobe Flex out-of-browser applications, almost all of them being Twitter clients :) But I haven't yet seen even one out-of-browser Silverlight application yet. Do you use any?

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• Abnormally disconnected TCP sockets and write timeout

  - by James

  Hello I will try to explain the problem in shortest possible words. I am using c++ builder 2010. I am using TIdTCPServer and sending voice packets to a list of connected clients. Everything works ok untill any client is disconnected abnormally, For example power failure etc. I can reproduce similar disconnect by cutting the ethernet connection of a connected client. So now we have a disconnected socket but as you know it is not yet detected at server side so server will continue to try to send data to that client too. But when server try to write data to that disconnected client ...... Write() or WriteLn() HANGS there in trying to write, It is like it is wating for somekind of Write timeout. This hangs the hole packet distribution process as a result creating a lag in data transmission to all other clients. After few seconds "Socket Connection Closed" Exception is raised and data flow continues. Here is the code try { EnterCriticalSection(&SlotListenersCriticalSection); for(int i=0;i<SlotListeners->Count;i++) { try { //Here the process will HANG for several seconds on a disconnected socket ((TIdContext*) SlotListeners->Objects[i])->Connection->IOHandler->WriteLn("Some DATA"); }catch(Exception &e) { SlotListeners->Delete(i); } } }__finally { LeaveCriticalSection(&SlotListenersCriticalSection); } Ok i already have a keep alive mechanism which disconnect the socket after n seconds of inactivity. But as you can imagine, still this mechnism cant sync exactly with this braodcasting loop because this braodcasting loop is running almost all the time. So is there any Write timeouts i can specify may be through iohandler or something ? I have seen many many threads about "Detecting disconnected tcp socket" but my problem is little different, i need to avoid that hangup for few seconds during the write attempt. So is there any solution ? Or should i consider using some different mechanism for such data broadcasting for example the broadcasting loop put the data packet in some kind of FIFO buffer and client threads continuously check for available data and pick and deliver it to themselves ? This way if one thread hangs it will not stop/delay the over all distribution thread. Any ideas please ? Thanks for your time and help. Regards Jams

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• SVN: Prevent a newer client from upgrading a working copy's SVN version?

  - by Wilco

  Is it possible to prevent a newer SVN client (say 1.6) from automatically upgrading a working copy that was checked out with an older client (say 1.4 or 1.5)? I find that as soon as I touch a working copy with a newer client, anyone using an older client to work with the same files can no longer do so (for obvious reasons). Assuming requiring everyone to upgrade their SVN clients isn't an option, is there a configuration setting or flag I can set to prevent my newer client from making this change?

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• When should I use MySQL compressed protocol?

  - by ento

  I've learned that MySQL can compress communication between servers and clients. Compression is used if both client and server support zlib compression, and the client requests compression. (from MySQL Forge Wiki) The most obvious pros and cons are pros: Reduced payload size cons: Increased computation time So, is compressed protocol something I should enable whenever I can afford servers with adequate specs? Are there other factors I should consider?

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• Safest LAMP encrypt method

  - by Adam Kiss

  Hello, what is PHP's safest encrypt/decrypt method, in use with MySQL - to store let's say passwords? Of course, not for portal purposes. I want to do little password (domain/mysql/ftp...) storage for whole team online, but I don't want really to endanger our clients' bussinesses. Hash can't be used for obvious reasons (Doesn't really make sense to run rainbow tables every time :D). Any idea?

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• wpf mvvm client server application

  - by jim

  First of all i must say i am new to wpf and mvvm. I want to develop a client-server application(clients send info to the server and the serer notifies one or more of them..consider something like yahoo messenger(some user changes his status..sends info to the server and the sever notifies his friends and changes to their UI are made) My question is: does mvvm suits well with this kind of application?

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• What is better for PHP developer - Unicode or UTF-8?

  - by Ole Jak

  What is better for PHP developer - Unicode or UTF-8? I am going to create international CMS. So I am going to have clients all over the werld. They will speak all posible languages. What encoding format is better for browser recognition and for DB data storing?

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• Thinking about introducing PHP/MySQL into a .NET/SQL Server environment. Thoughts?

  - by abszero

  I posted this over at reddit but it didn't gain any momentum. So here is what is going on: our company was recently purchased by another web shop and I was promoted to head of development here in our office. Our office is completely .NET/SQL Server and the company who purchased us is a *nix/PHP/MySQL shop. Now several of our large clients who are on the .NET platform are up for complete rewrites (the sites are from '04 and are running on the 1.x framework.) While reviewing the proposal for one client with my superior I came across a pretty extensive module which would require several hundred man hours to complete and voiced some concern about it in relation to the quote. One of the guys from the PHP group happen to hear this and told me of a module that they (PHP Group) use in Drupal that does exactly what the proposal in front of me was describing and it only took, at most, 8 hours to completely setup / configure. My superior suggested that I take a look at Drupal and the module in question over the weekend but stressed that we should only go that route if it really made sense. So this weekend I spun up a CentOS instance in VirtualBox and started playing around with Drupal. I am still fleshing it out so don't have a solid opinion on it just yet. Anyway I have some questions / fears that I was hoping progit could help me out in! Has anyone had experience doing this and, if so, how did it turn out? I am completely ignorant to what IDE's (if any) are available to for PHP. The last time I worked with PHP it was in Notepad and that was less than intuitive. So is there are more intuitive IDE out there for PHP dev? I don't want to scare my .NET guys. Since the merger all of our new business clients that have had relatively small websites have gone on Drupal with the larger sites going on .NET. My concern is that if they see a large site go onto Drupal that they might start getting anxious and start handing out their resumes. For the foreseeable future there are no plans to liquidate the .NET platform and really we can't just from a support standpoint. What would be the best way to approach this? Any other helpful info? Thanks!

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• how to start with a voip/public announcement project?

  - by Metiu

  The main requirements are: open source solution on Linux support P2P VoIP calls support presence support multicast VoIP announcements (and maybe some way of setting up such a "conference") preferably serverless (maybe the network can get split and I'd need to keep the functionality for all clients that still see each other) I tried looking at telepathy, in particular telepathy-salut, but it seems to be quite a new technology, so it lacks clear/good documentation and/or working examples. I'm also evaluating SIP (e.g. SofiaSIP), but it's working only if connected to a server.

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• How do I make Subversion (SVN) send email on checkins?

  - by Joe Ludwig

  I've always found checkin mails to be very useful for keeping track of what work other people are doing in the codebase. How do I set up SVN to email a distribution list on each checkin? Edit: I'm running clients on Windows and the server on Linux. The answers below for various platforms will likely be useful to other people though.

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