process body in http client as long as data is available before returning from callback
process body in http client as long as data is available before returning from callback

git-svn-id: 40192aece4a9e6664bc9a93aa558322db432a344@915 15ae5fad-cc11-0410-8fac-bce609e504b0

OlafRadicke/cxxtools,OlafRadicke/cxxtools,OlafRadicke/cxxtools,maekitalo/cxxtools,OlafRadicke/cxxtools,maekitalo/cxxtools,maekitalo/cxxtools,maekitalo/cxxtools