if (info==null)
info = _response.newResponseInfo();
// wrap callback to process 100 or 500 responses
final int status=info.getStatus();
final Callback committed = (status<200&&status>=100)?new Commit100Callback(callback):new CommitCallback(callback);
// committing write
_transport.send(info, content, complete, committed);
}
else if (info==null)