transfer

文件传输协议（Protobuf），功能有

支持存储

支持很多存储，包括

Name		Name	Last commit message	Last commit date
Latest commit History 1 Commits
LICENSE		LICENSE
README.md		README.md
const.go		const.go
cos.go		cos.go
cos.pb.go		cos.pb.go
downloader.go		downloader.go
file.go		file.go
file.pb.go		file.pb.go
ftp.go		ftp.go
ftp.pb.go		ftp.pb.go
go.mod		go.mod
message.go		message.go
oss.go		oss.go
oss.pb.go		oss.pb.go
path.go		path.go
transfer.go		transfer.go
type.pb.go		type.pb.go
uploader.go		uploader.go