A FTP server framework written by Golang
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Build Status

A FTP server framework forked from github.com/yob/graval and changed a lot.

Full documentation for the package is available on godoc




go get goftp.io/server


To boot a FTP server you will need to provide a driver that speaks to your persistence layer - the required driver contract is in the documentation.

Look at the file driver to see an example of how to build a backend.

There is a sample ftp server as a demo. You can build it with this command:

go install goftp.io/server/exampleftpd

Then run it if you have add $GOPATH to your $PATH:

exampleftpd -root /tmp

And finally, connect to the server with any FTP client and the following details:

port: 2121
username: admin
password: 123456

This uses the file driver mentioned above to serve files.


see https://gitea.com/goftp/server/graphs/contributors


FTP is an incredibly insecure protocol. Be careful about forcing users to authenticate with an username or password that are important.


This library is distributed under the terms of the MIT License. See the included file for more detail.


All suggestions and patches welcome, preferably via a git repository I can pull from. If this library proves useful to you, please let me know.

Further Reading

There are a range of RFCs that together specify the FTP protocol. In chronological order, the more useful ones are:

For an english summary that’s somewhat more legible than the RFCs, and provides some commentary on what features are actually useful or relevant 24 years after RFC959 was published:

For a history lesson, check out Appendix III of RCF959. It lists the preceding (obsolete) RFC documents that relate to file transfers, including the ye old RFC114 from 1971, “A File Transfer Protocol”

This library is heavily based on em-ftpd, an FTPd framework with similar design goals within the ruby and EventMachine ecosystems. It worked well enough, but you know, callbacks and event loops make me something something.