it is a practice for Golang. The story is based on a svn web server which are used self-sign cert as https and digest auth. This tool can help you to download all files under specified folder.
fork the original and support self-sign cert
go get github.com/ericbear/http-digest-auth-client/auth.go
go run dl.go [USER_NAME] [PASSWORD] [HTTPS SVN LINK]