[Boost-users] asio - How do I modify code using old ASIO to newer version?

Subject: [Boost-users] asio - How do I modify code using old ASIO to newer version?
From: Jeff Lee (python_lzj_at_[hidden])
Date: 2008-12-10 09:12:19

Hi ,
  I have some code using the old version of ASIO . 
some code like this:
                 try
                {
                        while(  mWrapped->mSocket.in_avail() > 0 )
                        { ...

but I found that there is no in_avail() method exist in current version.  how can I  resolve the problem ? 

Plz dont just give a web link. 
I'm using the very very slow internet connection.. so , search from internet or even get the document is difficult.