Simple Ruby script to listCompletedActions is failing with Net::ReadTimeout

We have hundreds of thousands (probably millions, actually) of completed items in our Satellite 5 database that I want to archive then delete. I'm just taking steps for the moment. My first is to just list out the items. Considering how many we have I doubt this will be a short task. I expect it would take a while to complete. That said, my script appears to be timing out:

/usr/share/ruby/net/protocol.rb:158:in

rescue in rbuf_fill': Net::ReadTimeout (Net::ReadTimeout)

    from /usr/share/ruby/net/protocol.rb:152:in

readuntil'

    from /usr/share/ruby/net/protocol.rb:144:in

read_status_line'

    from /usr/share/ruby/net/http/response.rb:28:in

block in transport_request'

    from /usr/share/ruby/net/http.rb:1409:in

transport_request'

    from /usr/share/ruby/net/http.rb:1382:in

request_post'

    from /usr/share/ruby/xmlrpc/client.rb:475:in

call2'

    from /usr/share/ruby/xmlrpc/client.rb:260:in

This is all I have in the script:
!/usr/bin/env ruby
require "xmlrpc/client"

@SATELLITE_URL = "https://sat.example.com/rpc/api"
@SATELLITE_USER = "username"
@SATELLITE_PASS = "U53rP@55"

@client = XMLRPC::Client.new2(@SATELLITE_URL)

@client.instance_variable_get("@http").verify_mode = OpenSSL::SSL::VERIFY_NONE

@key = @client.call('auth.login', @SATELLITE_USER, @SATELLITE_PASS)

list = @client.call('schedule.listCompletedActions', @key)
for action in list do
p action["type"]
end

@client.call('auth.logout', @key)

How do I increase the timeout so that I can (hopefully) pull all of the items? Also, the Web UI automatically limits the returned list to 10000 items. The API documentation does not provide that option as far as I can tell. Is it built in and automatically done?

Thanks,
-Mathew