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• Javascript Special Control Characters as delimiters

  - by Gio Borje

  I have a nodejs TCP server and a client. Basic network communication happens. Client sends "data + STX_CHARACTER + data + ETX_CHARACTER" (just an example). How do I split the string using the STX Control Character as a delimiter or how do I reference the character at all in Javascript.

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• What is the proper backlog for an asynchronous server socket?

  - by The.Anti.9

  If you're working with an Asynchronous server socket in C#, what is the proper backlog to put on the socket? For instance: server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); IPEndPoint iep = new IPEndPoint(IPAddress.Any, port); server.Bind(iep); server.Listen(10);

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• Convert image buffer to pdf with ImageMagick in C++

  - by Chris

  Hi, I've downloaded the dll's for ImageMagick and am wondering if anybody knows of some example code to accomplish a simple task: I have generated an image in C++ and have the buffer in RGB format. I need to convert it to PDF format (without writing to a file) before sending it over a TCP socket. Is this doable with ImageMagick (or any other library)?

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• Does STDIN/STDOUT flush data all at once or character by character?

  - by ryeguy

  I'm using C# to read another program's STDOUT. If I do this: StreamReader reader = process.StandardOutput; reader.ReadToEnd(); Is it guaranteed to get the last thing flushed out to the program's STDOUT in its entirety? Or is kind of like TCP where I'd have to have a message terminator or length header?

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• Use a Datamodule in a Service Application

  - by O Engenheiro

  I wrote my Win32 App to test and debug. I've created a datamodule with all functionality needed to run the TCP sockets and IBDatabase components. After successfully testing the Datamodule in the Win32 application environment I am trying to hook the Datamodule into a Service Application template that I created, I can get nowhere in getting it to run. Could someone indicate whether this strategy of using a Datamodule with Component functionality encapsulating the primary service functions is workable and give a simple template example of how to hook it up if it is??

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• Capture node.js crash reason

  - by dfilkovi

  I have a script written in node.js, it uses 'net' library and communicates with distant service over tcp. This script is started using 'node script.js log.txt' command and everything in that script that is logged using console.log() function gets written to log.txt but sometimes script dies and I cannot find a reason and nothing gets logged in log.txt around the time script crashed. How can I capture crash reason?

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• how to create ODBC Data source for a SQL Server 2008 on another machine?

  - by 5YrsLaterDBA

  I was able to create an ODBC Data Source locally for my SQL Server 2008. Now I moved to anohter machine and want to connect from the new machine to that SQL Server 2008. I know by default the SQL Server 2008 will not listen for the remote connection. I have enabled its Browser and TCP/IP. Error window is like this:

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• Is it possible to mix a named pipe with select in perl?

  - by Haiyuan Zhang

  I need to write a daemon that supposed to have one TCP socket and one named pipe. Usually if I need to implement a multi IO server with "pure" sockets, the select based multi-IO model is always the one I will choose. so does anyone of you have ever used named pipe in select or you can just tell me it is impossible. thanks in advance.

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• What does ECONNRESET mean in the context of an AF_LOCAL socket?

  - by Hongli

  I understand that for TCP sockets ECONNRESET has got something to do with RST packets. But I've seen ECONNRESET errors for AF_LOCAL sockets too, on read() and write() calls. What does this mean? How is ECONNRESET different from read() returning 0 or write() throwing EPIPE?

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• Hold a network connection although IP address change

  - by rursw1

  Hi, Is it possible to hold an open TCP connection with a client, while the IP address of the client is externally changed? For example, the connection is establishes against address X, but somewhen while the connection is open, the client-side user asks for IP renew and gets another IP address. Can the connection remains alive in this case? Thanks in advance.

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• C# : WHAT KIND OF CONNECTION SHOULD I USE ? [closed]

  - by Harun

  I am developing a network based application. I need to retrieve data through internet. The scenario is like this - a client machine will send data through internet to the server machine and data size will be big enough. So should i use simple TCP/IP socket concept or else? Because i never did a socket program which will retrieve data through internet..... Any suggestion will be very helpful....... Thanks.

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• Java, let CookieHandler work on only one instance.

  - by user435657

  Hi all, I don't know how CookieHandler works system wide, I did view the source of CookieHandler but found no more information except the get/set methods. Where do TCP/HTTP connections use instance of CookieHandler, which I set by CookieHandler.setDefault(...) Which source file I should refer to? URLConnection & HttpURLConnection don't seem have things to do with it. Help, thanks in advance.

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• C# networking app - should I use sockets or something else? [closed]

  - by Harun

  I am developing a network based application. I need to retrieve data through internet. The scenario is like this - a client machine will send data through internet to the server machine and data size will be big enough. So should i use simple TCP/IP socket concept or else? Because i never did a socket program which will retrieve data through internet..... Any suggestion will be very helpful....... Thanks.

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• how to add a port to mysql server

  - by Shvilam

  I wont to add to mysql other tcp port that he will be lessen to and i will be able to connect to that port from my application i have duplicate my appliction and i runing them both from the same machine they both connected to the mysql server that are running on the same machine the problem is that the default port 3306 all ready taken thanks

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• Wake lock does not seem to work.

  - by crackedsun

  I'm developing an app in which i need the TCP connection to stay alive. I've implemented a kind of ping/pong system to do this. It works perfectly when the screen is on, but when it goes of the phone stops responding to the pings after a while. I've created a Wi-Fi wake lock but i'm still experiencing still the same problem.. Any ideas?

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• How to implement long lived network connection in dotnet

  - by mrt

  The idea is to have a windows service, that clients can connect to (tcp, wcf, remoting), and when the data changes in the windows service, send the changes to the clients. An example of this would be a stock pricing server, and when the price changes for instruments, send the changes to the client. Wcf does have streaming, but is that just for streaming one big message response or can it be used for lots of small messages ? Is sockets the only way to achieve this ?

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• How can I block all traffic except web traffic? [closed]

  - by toddoon

  I have wrote my rules like this: iptables -P INPUT DROP iptables -P OUTPUT DROP iptables -P FORWARD DROP iptables -A OUTPUT -i eth0 -p tcp --dport 80 -j ACCEPT What do I do next?

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• Is it possible to host a WCF service in an Azure WebRole (MVC)

  - by Detroitpro

  Is it possible to host a WCF service in an Azure WebRole (MVC)? Also; I assume that net.tcp is not supported.

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• Is there a way to close a Unix socket for only reading or writing?

  - by Sii

  Is there a way to only close "one end" of a TCP socket to cleanly indicate one side of a connection is done writing to the connection? (Just like you do with a pipe in every Unix pipe tutorial ever.) Or should I use some in-band solution like a sentinel value or some such? I only found shutdown() in the libc documentation and that doesn't seem like it does what I want.

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• WCF : Diffrence between NetTCP and NetPeerTCP ?

  - by nettguy

  What is the difference between netTCP and netPeerTCP bindings.I know netTCP uses TCP as transport and netPeerTCP uses P2P as transport.Apart from this is there any main difference between these two?

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• Communication framework recommendation

  - by Benny

  I have two applications, and one is keeping sending live images to the other and it need to be long-running. WCF - is it suitable? TCP/IP directly? Service bus, NServiceBus? Is there any better alternative for this communication?

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• Recommendations for .NET compression library

  - by GX

  Hello, I am looking for some recommendations about compressing data in .NET, aside from using the GZipStream class. I am looking for fast and high compression of byte arrays to be able to send them via tcp. Thank you.

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• Embedded device, once seen on code project and can't remember the manufacturer

  - by MeBerserk

  The article was about an embedded device containing a memory chip, processor and could be extended with bluetooth wifi and an other RF transmitter. The manufacturer developed a framework which contained: memory managment, TCP/IP stacks and more. Anyone has an idea what it was? thnx

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• Alternatives to "Raining Sockets"

  - by sanity

  I need to build a Java app with considerable IO requirements, supporting tens of thousands of concurrent TCP connections. I found a library called Raining Sockets which seems intended to make it easier to use Java's asynchronous NIO package, but the last update was 6 years ago. Are there other libraries, that are preferably still under active development, and with a public maven repository, that I should look at?

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• What is the best way to implement a Server-Client connection between an iPad and multiple iPhones?

  - by Infinite

  Based on a college-project I'm trying to realize a relatively simple game (Poker) where an iPad acts as Server and multiple iPod-Touchs connect to it as Clients. Gamekit seems to drop out, since those old ipod-touch-devices don't have bluetooth-support. Are there already some Frameworks out there simplifying the process, or do I have to fall back on TCP-Streaming-Sockets and implement it myself?

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