From: Koichi Sasada <redmine@...>
Date: 2012-03-11T16:45:48+09:00
Subject: [ruby-core:43210] [ruby-trunk - Bug #5616][Assigned] * /lib/net/imap.rb exception in IMAP.new when get_response returns nil


Issue #5616 has been updated by Koichi Sasada.

Status changed from Open to Assigned
Assignee set to Shugo Maeda


----------------------------------------
Bug #5616: * /lib/net/imap.rb exception in IMAP.new when get_response returns nil 
https://bugs.ruby-lang.org/issues/5616

Author: Edsard Boelen
Status: Assigned
Priority: Normal
Assignee: Shugo Maeda
Category: lib
Target version: 
ruby -v: ruby 1.8.7 (2011-02-18 patchlevel 334)


The error occurred in ruby 1.8.7 when connecting to a buggy IMAP server. The error message was: Undefined method 'name' in imap.rb 
It is this piece of code in line 915 (line 1067 in ruby 1.9.3):

      @greeting = get_response
      if @greeting.name == "BYE"
        @sock.close
        raise ByeResponseError, @greeting
      end

after a little search I saw that the function 'get_response' returns nil if the buffer is empty:

    def get_response
      buff = ""
      while true
        ...
      end
      return nil if buff.length == 0
        ...
      return @parser.parse(buff)
    end



-- 
http://bugs.ruby-lang.org/