XMPP/Jabber的Ruby類庫 XMPP4R

XMPP4R是一個XMPP/Jabber的Ruby類庫。它的目標是提供開發Jabber相關應用程序或者Ruby腳本的完整框架。

• 完整面向對象
• 旨在XMPP協議兼容
• Threaded, events-based
• 良好的單元測試和文檔代碼
• Uses well-known and well-tested software like REXML, instead of reinventing the wheel
• Very easy to extend

安裝方法：gem install xmpp4r

示例代碼：

  # Send a message to a friend, asking for authorization if necessary:
  im = Jabber::Simple.new("user@example.com", "password")
  im.deliver("friend@example.com", "Hey there friend!")

  # Get received messages and print them out to the console:
  im.received_messages { |msg| puts msg.body if msg.type == :chat }

  # Send an authorization request to a user:
  im.add("friend@example.com")

  # Get presence updates from your friends, and print them out to the console:
  # (admittedly, this one needs some work)
  im.presence_updates { |update|
    from     = update[0].jid.strip.to_s
    status   = update[2].status
    presence = update[2].show
    puts "#{from} went #{presence}: #{status}"
  end

  # Remove a user from your contact list:
  im.remove("unfriendly@example.com")

  # See the Jabber::Simple documentation for more information.