[ruby/open-uri] Set default for max_redirects and add exception class

https://github.com/ruby/open-uri/commit/dcdcb885cc

1 files changed, 5 insertions, 2 deletions

diff --git a/lib/open-uri.rb b/lib/open-uri.rb
index 56dac75b29..49488cfc8e 100644
--- a/lib/open-uri.rb
+++ b/lib/open-uri.rb
@@ -108,7 +108,7 @@ module OpenURI
     :ftp_active_mode => false,
     :redirect => true,
     :encoding => nil,
-    :max_redirects => nil,
+    :max_redirects => 64,
   }
 
   def OpenURI.check_options(options) # :nodoc:
@@ -240,7 +240,7 @@ module OpenURI
         uri = redirect
         raise "HTTP redirection loop: #{uri}" if uri_set.include? uri.to_s
         uri_set[uri.to_s] = true
-        raise "Too many redirects" if max_redirects && uri_set.size > max_redirects
+        raise TooManyRedirects.new("Too many redirects", buf.io) if max_redirects && uri_set.size > max_redirects
       else
         break
       end
@@ -395,6 +395,9 @@ module OpenURI
     attr_reader :uri
   end
 
+  class TooManyRedirects < HTTPError
+  end
+
   class Buffer # :nodoc: all
     def initialize
       @io = StringIO.new