connection seems to stay open when copying from server to client

[brendanjerwin]

Using this form:

client.scp({
    host: 'example.com',
    username: 'admin',
    password: 'password',
    path: '/home/admin/file.txt'
}, './', function(err) {})

It seems that the ssh connection is staying open. No problem when copying from the client to the server though, but I see they take two different code paths.