* lib/net/imap.rb (initialize): raise Net::IMAP::Error when the

  connection is closed without a greeting response.
  [ruby-core:40938] [Bug #5616]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35055 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/net/imap.rb b/lib/net/imap.rb
index b2193dbf93..6e88fb96e4 100644
--- a/lib/net/imap.rb
+++ b/lib/net/imap.rb
@@ -1065,6 +1065,10 @@ module Net
       @exception = nil
 
       @greeting = get_response
+      if @greeting.nil?
+        @sock.close
+        raise Error, "connection closed"
+      end
       if @greeting.name == "BYE"
         @sock.close
         raise ByeResponseError, @greeting