recvfrom + MSG_PEEK = broken?

[Warren Young]

On 3/22/2010 5:03 AM, Corinna Vinschen wrote:
> The last time I had problems with MSG_PEEK was back in 2006.  Curious
> how seldomly it's used, apparently.

Peeking is evil:

	http://tangentsoft.net/wskfaq/newbie.html#peeking

The extra kernel context switch problem isn't Windows-specific, so 
peeking should be avoided in all code for that reason alone.  The other 
problems the FAQ item references may be Windows-specific, but they stem 
from perfectly reasonable stack design decisions that could affect any 
OS, so there's another reason not to peek regardless of what OS you run 
your code on.

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