ipv6 & ftp & passive mode & error
When the incoming data is "229 Entering Extended Passive Mode (|||495…
…88|)", an Incomplete error will be generated.
The reason for the problem is that "tag!("|).")" is matched first.
Reference link: https://docs.rs/nom/4.0.0/nom/macro.alt.html
Source file : rust/src/ftp/mod.rs
The following modification is helpful to solve this problem.