id summary reporter owner description type status milestone component version severity resolution keywords cc 6660 async_read_until() does not complete immediately when the delimeter is already in the streambuf. sammy@… chris_kohlhoff "From the async_read_some() documentation: (http://www.boost.org/doc/libs/1_46_1/doc/html/boost_asio/reference/async_read_until/over\ load2.html) ""If the streambuf's get area already contains the delimiter, this asynchronous operation completes immediately."" This condition appears to be met under boost 1.42.0, and not under boost 1.46.1, boost 1.49.0, or boost trunk from subversion. A test program will be attached to this bug which contains more information." Bugs closed To Be Determined asio Boost Development Trunk Regression invalid