socket programming: How do I handle out of band data

Posted by soulmerge on Stack Overflow See other posts from Stack Overflow or by soulmerge
Published on 2009-02-26T10:14:01Z Indexed on 2010/05/30 8:32 UTC
Read the original article Hit count: 240

Filed under:

sockets

|

out-of-band

I just looked into wikipedia's entry on out-of-band data and as far as I understand, OOB data is somehow flagged more important and treated as ordinary data, but transmitted in a seperate stream, which profoundly confuses me.

The actual question would be (besides "Could someone explain what OOB data is?"):

I'm writing a unix application that uses sockets and need to make use of select() and was wondering what to do with the exceptfds parameter? Do I need to put all my sockets into this parameter and react to such events? Or do I just ignore them?

© Stack Overflow or respective owner

Related posts about sockets

Performance implications of Synchronous Sockets vs Asynchronous Sockets

as seen on Stack Overflow - Search for 'Stack Overflow'
We are trying to build an SMTP Server to receive mail notifications from various clients over internet. As each of the communication will be longer and it needs to log everything, doing this Asynchronous way is little challenging as well as by using Socket's Asynchronous methods we are not sure of… >>> More
Multiple INET sockets (mulple IP's too) connected to UNIX sockets

as seen on Server Fault - Search for 'Server Fault'
HOST = same host all the time, accepts multiple connection. I have a dedicated server and I will buy extra IP's. Socket 1 connects to HOST:PORT, from IP-1 Socket 2 connects to HOST:PORT, from IP-1 Socket 3 connects to HOST:PORT, from IP-1 Socket 4 connects to HOST:PORT, from IP-2 Socket 5 connects… >>> More
Multiple INET sockets (mulple IP's too) connected to UNIX sockets

as seen on Stack Overflow - Search for 'Stack Overflow'
HOST = same host all the time, accepts multiple connection. I have a dedicated server and I will buy extra IP's. Socket 1 connects to HOST:PORT, from IP-1 Socket 2 connects to HOST:PORT, from IP-1 Socket 3 connects to HOST:PORT, from IP-1 Socket 4 connects to HOST:PORT, from IP-2 Socket 5 connects… >>> More
Do WebSockets have exclusive access to their sockets?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm curious to know if, after a WebSocket has been established (after having received the proper handshake from a server that supports them), whether or not the TCP socket used by the "WebSocket connection" is used exclusively by the WebSocket, or if the browser may still make regular HTTP requests… >>> More
What Parallel computing APIs make good use of sockets?

as seen on Stack Overflow - Search for 'Stack Overflow'
My program uses sockets, what Parallel computing APIs could I use that would help me without obligating me to go from sockets to anything else? When we are on a cluster with a special, non-socket infrastructure system this API would emulate something like sockets but using that infrastructure (so… >>> More

Related posts about out-of-band

Internet Explorer Cumulative Update Releasing Out-of-Band

as seen on Dot net Slackers - Search for 'Dot net Slackers'
This is an advance notification of an out-of-band security bulletin that Microsoft is intending to release on March 30, 2010. The bulletin is being released to address attacks against customers of Internet Explorer 6 and Internet Explorer 7. Users of Internet Explorer 8 and Windows 7 are not vulnerable… >>> More
Create attribute in XML

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello. I have the following php code that adds data into XML and works correctly. However, in my second step I will create a form that deletes some of the elements. The problem is that I want to add an ID number and then the PHP file will search for it and delete entire node. My question is how can… >>> More
multiple detail band in jasper report

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi I want to show multiple detail section in my jasper report.How to add multiple detail bands in jasper.For details band I am passing collection from my java class.So if I have multiple detail band how to pass the different collections to different detail band. Can some one provide help on this >>> More
How do I handle nils in views?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have the following models set up: class Contact < ActiveRecord::Base belongs_to :band belongs_to :mode validates_presence_of :call, :mode validates_associated :mode, :band validates_presence_of :band, :if => :no_freq? validates_presence_of :freq, :if => :no_band? protected … >>> More
How to increase detail band height dynamically

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All, I am using ireport. My requirement is to increase the detail band height dynamically when the text field has more data , are there any settings to increase to it? I am using one textfield in the detail band when it has more information(words), it is displaying only some information.i.e the… >>> More