[Boost-users] [asio] Why are the strands in the "HTTP Server 3" example necessary?

Subject: [Boost-users] [asio] Why are the strands in the "HTTP Server 3" example necessary?
From: Tacheon (tacheon_at_[hidden])
Date: 2010-01-07 06:22:39

In the  HTTP Server 3 (http://tinyurl.com/yh95d2b) example 
of the asio documentation strands are used to synchronize 
the invocation of completion handlers? But why are they 
necessary here? As far as I get it, the handlers  are 
invoked in strict sequential order for each distinct 
connection (http://tinyurl.com/ybohynd). Each connection has 
its own set of resources so synchronization shouldn't be 
necessary, should it?

Thanks in advance,
Boris