asynframe-sdk_v1.5.0-20230808.zip is from https://github.com/netsecsp/asynframe

aftpx.exe

IPv4/IPv6 ftp/ftps client program under windows

1. support ftp/http and socks4/4a/5 proxy
2. support download directory

aftpxserver.exe

IPv4/IPv6 ftp/ftps server program under windows

1. support download directory
2. support download from offset