cannot use shell example

[despiegk]

require "ssh2"

SSH2::Session.open("localhost",port=5001) do |session|
  session.login_with_agent("root")
  session.open_session do |channel|
    channel.command("uptime")
    IO.copy(channel, STDOUT)
  end
  session.open_session do |ch|
    ch.request_pty("vt100")
    ch.shell
    session.blocking = false

    buf_space = Bytes.new(1024)
    buf = buf_space.to_slice
    loop do
      io = IO.select([STDIN, ch.socket]).first
      if io == STDIN
        command = gets
        if command
          ch.write(command.to_slice)
        end
      elsif io == ch.socket
        len = ch.read(buf).to_i32
        print! String.new buf[0, len]
        break if ch.eof?
      end
    end
  end  

end

In src/builder.cr:26:13

 26 | session.blocking = false
              ^-------
Error: private method 'blocking=' called for SSH2::Session
JSX:OSX:builder: docker images
(reverse-i-search)`sh': ssh-add -l
JSX:OSX:builder: shards install
Resolving dependencies
Fetching https://github.com/spider-gazelle/ssh2.cr.git
Installing ssh2 (1.2.6 at cc5af1d6fcfbf4c72784e1c2445bddb678880e27)
Writing shard.lock
JSX:OSX:builder: crystal run src/builder.cr
Showing last frame. Use --error-trace for full trace.

In src/builder.cr:25:13

 25 | session.blocking = false
              ^-------
Error: private method 'blocking=' called for SSH2::Session

[stakach]

Does it work if you remove the blocking line?
As we basically never want to block as it'll block the crystal reactor loop.

I didn't actually write the examples but this is how I use it in production:
https://github.com/PlaceOS/driver/blob/master/src/driver/transport/ssh.cr