I've created a new branch off of the httpd trunk: https://svn.apache.org/repos/asf/httpd/httpd/branches/async-read-dev/
The old async-dev branch is rather out of date at this point, and all its nonblocking write code has since been committed to the trunk. Rather than doing a monstrous merge to get async-dev synchronized with the trunk, my plan is to delete async-dev in a week. If anyone is actively working with the async-dev branch and would be adversely affected by an svn delete, please let me know. Thanks, Brian