* lib/net/http.rb (HTTPHeader#content_length): should return nil unless header exists. [ruby-dev:22519]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5401 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Jan  7 20:42:06 2004  Minero Aoki  <aamine@loveruby.net>
+
+	* lib/net/http.rb (HTTPHeader#content_length): should return nil
+	  unless header exists. [ruby-dev:22519]
+
 Wed Jan  7 14:26:05 2004  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
 
 	* ext/tk/lib/tk.rb (TkPanedWindow): use epath for embedded windows.

lib/net/http.rb

@@ -1032,7 +1032,8 @@ module Net # :nodoc:
     # Returns an Integer object which represents the Content-Length: header field
     # or +nil+ if that field is not provided.
     def content_length
-      len = @header['content-length'].to_s.slice(/\d+/) or
+      return nil unless @header.key?('content-length')
+      len = @header['content-length'].slice(/\d+/) or
           raise HTTPHeaderSyntaxError, 'wrong Content-Length format'
       len.to_i
     end