Hello, I try to read the newsgroup list with aiso, but I've got some problems with terminate the reading. I send the "list" command to my nntp server and get a status 200, after that I read the data with boost::asio::streambuf l_response; std::istream l_response_stream( &l_response ); boost::system::error_code error; while (boost::asio::read(m_socket, l_response, boost::asio::transfer_at_least(1), error)) std::cout << &l_response; and I see on cout the list (excerpt): xs4all.ipv6 0000000481 0000000001 y de.comp.lang.vbclassic 0000000257 0000000001 y de.comp.office-pakete.ms-office.word 0000000013 0000000001 y it.comp.dotnet 0000000074 0000000001 y free.timothy.sutter 0000000003 0000000001 y free.soc.religion.christian 0000000006 0000000001 y free.fan.taylor-momsen 0000000000 0000000001 y . After the dot, my program doesn't terminate, because the while loop doesn't break. I understand the loop in that way: I read some bytes into my stream from the socket and write them to the std::cout, if there more bytes the loop will continue otherwise (like EOF) the look should be break. I use the example at http://www.boost.org/doc/libs/1_44_0/doc/html/boost_asio/example/http/client... because I'm new on asio, so I hope someone can explain me, the problem. Thanks for help Phil .