You just need to disable automatic flushing: s1 << std::nounitbuf; // or s1.unsetf(std::ios_base::unitbuf);
https://en.cppreference.com/w/cpp/io/manip/unitbuf By the way you can call connect directly on s1 no need to take a reference. _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org https://lists.boost.org/mailman/listinfo.cgi/boost-users
