rapid7/metasploit-framework — comment on commit 677cb4b15240c663517f7c696ef4875b7f99e6e7
File:  line 0
By todb-r7:

Still todo: have some kind of timeout mechanism available. Add a straight service scanner to detect not just readable tftp servers but writable as well. Update tftpbrute.rb to use this library, if it's more reliable.