title: Covert boost::asio::ip::address_v4 to string
body: <p>Currently I'm looking for a way to convert a <code>boost::asio::ip::address_v4()</code> to a <code>string</code>. Is there a way to accomplish this? The method comes from the ipv4_header.hpp on the <a href="http://www.boost.org/doc/libs/1_40_0/doc/html/boost_asio/example/icmp/ipv4_header.hpp" rel="nofollow">boost website</a></p>
  
  <p><strong>Update</strong>: i have tried <code>boost::asio::ip::address_v4::to_string(ipv4_hdr.source_address())</code>, but I was unsuccessful</p>