non-blocking server?

non-blocking server?

[Wrazlov]

Hello,
the last time I tried to write a server in C I had the problem that it had to 
wait for Bytes to arrive at the open port which blocked the process.
A solution would be, of course, threading of the server-process or using 
signals, but I want this code to be used in a windows-environment, too.
Is that possible? Does the standard-c-library provide some kind of signals or 
thread-programming for all systems?
   
  wrazlov
-- 
"What do you get if you multiply six by nine?"

Re: non-blocking server?

[SUBREDU Manuel]

Hy,

 a more practical solution is to use the select() function, who help's you
write a server in C who can serve multiple clients at once but does not require
any thread programming. And, as far as I know it's also supported by M$ C
compiler and linker.

On Fri, 17 Jan 2003, Wrazlov wrote:

> Hello,
> the last time I tried to write a server in C I had the problem that it had to 
> wait for Bytes to arrive at the open port which blocked the process.
> A solution would be, of course, threading of the server-process or using 
> signals, but I want this code to be used in a windows-environment, too.
> Is that possible? Does the standard-c-library provide some kind of signals or 
> thread-programming for all systems?
>    
>   wrazlov
> -- 
> "What do you get if you multiply six by nine?"
> -
> To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in
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Re: non-blocking server?

[Elias Athanasopoulos]

On Fri, Jan 17, 2003 at 10:31:31PM +0000, Wrazlov wrote:
> the last time I tried to write a server in C I had the problem that it had to 
> wait for Bytes to arrive at the open port which blocked the process.

You can make the socket non-blocking:

	fcntl(s, F_SETFL, O_NONBLOCK);

Use select() to pick the right descriptor to send()/recv() data.

Elias

-- 
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