Net::FTP#storlines

# File tmp/rubies/ruby-3.0.5/lib/net/ftp.rb, line 733
def storlines(cmd, file) # :yield: line
  synchronize do
    with_binary(false) do
      begin
        conn = transfercmd(cmd)
        while buf = file.gets
          if buf[-2, 2] != CRLF
            buf = buf.chomp + CRLF
          end
          conn.write(buf)
          yield(buf) if block_given?
        end
        conn.shutdown(Socket::SHUT_WR) rescue nil
        conn.read_timeout = 1
        conn.read rescue nil
      ensure
        conn.close if conn
      end
      voidresp
    end
  end
rescue Errno::EPIPE
  # EPIPE, in this case, means that the data connection was unexpectedly
  # terminated.  Rather than just raising EPIPE to the caller, check the
  # response on the control connection.  If getresp doesn't raise a more
  # appropriate exception, re-raise the original exception.
  getresp
  raise
end