Hi Dear all I want use async_read_until for read stream from socket until EOF,but I can't compile code below. code: boost::asio::async_read_until(socket_, stream_buffer_,boost::asio::transfer_all(), boost::bind(&http_connection::handle_read_response, this, boost::asio::placeholders::error,boost::asio::placeholders::bytes_transferred)); stream_buffer is instance of boost::asio::streambuf I got the error like: d:\development\boost_1_36_0\boost\asio\impl\read_until.ipp(953) : error C2664: "bool boost::asio::detail::transfer_all_t::operator ()<iterator>(const Error &,size_t)":Can't convert paramerater 2 from "iterator" to "size_t" with [ Error=iterator ] d:\development\tcphttpbridge\httpconnection.cpp(75):参见对正在编译的函数 模 板 实例化"void boost::asio::async_read_until<boost::asio::ip::tcp::socket,std::allocator<_Ty>,boost::asio::detail::transfer_all_t,boost::_bi::bind_t<R,F,L>>(AsyncReadStream &,boost::asio::basic_streambuf<> &,MatchCondition,ReadHandler,void *)"的引用 with [ _Ty=char, R=void, F=boost::_mfi::mf2<void,http_connection,const boost::system::error_code &,size_t>, L=boost::_bi::list3<boost::_bi::value<http_connection *>,boost::arg<1>,boost::arg<2>>, AsyncReadStream=boost::asio::ip::tcp::socket, MatchCondition=boost::asio::detail::transfer_all_t, ReadHandler=boost::_bi::bind_t<void,boost::_mfi::mf2<void,http_connection,const boost::system::error_code &,size_t>,boost::_bi::list3<boost::_bi::value<http_connection *>,boost::arg<1>,boost::arg<2>>> ] -- Best Regards, Ken