id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
5619	zlib: Add support for additional flush mode	mb@…	Jonathan Turkanis	"The zlib filter uses Z_SYNC_FLUSH which is the most widely used flush mode. However SSH requires Z_PARTIAL_FLUSH. For further information please see the ""Partial Flush"" paragraph at: www.bolet.org/~pornin/deflate-flush.html

It would be trivial to add the new flush mode:[[BR]]

'''File: zlib.hpp'''[[BR]]

Add [[BR]]
BOOST_IOSTREAMS_DECL extern const int partial_flush;[[BR]]

Add additional argument to zlib_params:[[BR]]

 zlib_params( [[BR]]

    int flush_mode = zlib::default_flush_mode[[BR]]


add int flush_mode_ member to zlib_base[[BR]]


init flush_mode_ member in zlib_base::do_init[[BR]]

flush_mode_ = p.flush_mode;[[BR]]


and in the filter function change the xinflate to:[[BR]]

    int result = xinflate(flush_mode_);[[BR]]


'''File: zlib.cpp'''[[BR]]

const int partial_flush  = Z_PARTIAL_FLUSH;[[BR]]

const int default_flush_mode  = sync_flush;[[BR]]

[[BR]]

Please let me know if there is an interest for the diff files."	Feature Requests	new	To Be Determined	iostreams	Boost Development Trunk	Problem