fixes #683

fixes #684

LICENSE.md

@@ -1,4 +1,4 @@
-Copyright (c) 2009-2015 Rick Olson, Zack Hobson
+Copyright (c) 2009-2017 Rick Olson, Zack Hobson
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

README.md

@@ -325,7 +325,7 @@ of a major release, support for that Ruby version may be dropped.
 
 ## Copyright
 
-Copyright (c) 2009-2013 [Rick Olson](mailto:technoweenie@gmail.com), Zack Hobson.
+Copyright (c) 2009-2017 [Rick Olson](mailto:technoweenie@gmail.com), Zack Hobson.
 See [LICENSE][] for details.
 
 [net_http]:     http://ruby-doc.org/stdlib/libdoc/net/http/rdoc/Net/HTTP.html

lib/faraday/request/retry.rb

@@ -151,8 +151,9 @@ module Faraday
       @options.methods.include?(env[:method]) || @options.retry_if.call(env, exception)
     end
 
-    def rewind_files(env)
-      env && env.each do |_, value|
+    def rewind_files(body)
+      return unless body.is_a?(Hash)
+      body.each do |_, value|
         if value.is_a? UploadIO
           value.rewind
         end