after referring the source code, i hardly found difference between ip::tcp::socket::send & ip::tcp::socket::write_some, but about some arguments. "socket_ops::send" directly invokes system call:"sendmsg" to send message. ------------------ best wishes to you 张亚霏 ------------------ Original ------------------ From: "Lennyk"; Date: Wed, Mar 25, 2009 04:59 PM To: "boost-users"; Subject: [Boost-users] [asio] ip::tcp::socket - differences between send &write_some Hi, What is the difference in implementation between the ip::tcp::socket::send & ip::tcp::socket::write_some on Linux sys sockets? What kind of system calls are used in both calls? Thanks! _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users