Bytes lost during stream conversion

Hi.

I am trying to make a server/client finance-application with the use of
PHP-GTK and especially the Gtk::io_add_watch()-functionallity. However
sometimes I get an error saying that some bytes were lost during stream
convertions, when I close down the watch to read from the socket manually?

I figured that these bytes which were lost must have been in some kind of
buffer, and when I remove the watch, then this buffer is removed? Is it
possible to retreive these bytes before removing the watch itself? Like some
kind of "get_buffered_bytes()"-function?

Or can anyone point me in the direction of how to properly handle
socket-connections in PHP-GTK, so I dont run into the "lost bytes"-problem?


-- 
Regards
Kasper Johansen