From: Edsard Boelen <boelen@...>
Date: 2011-11-11T18:33:25+09:00
Subject: [ruby-core:40938] [ruby-trunk - Bug #5616][Open] * /lib/net/imap.rb exception in IMAP.new when get_response returns nil


Issue #5616 has been reported by Edsard Boelen.

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

Author: Edsard Boelen
Status: Open
Priority: Normal
Assignee: 
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



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