ruby 1.9 compat when raising ConnectionFailed

lib/faraday/adapter/em_synchrony.rb

@@ -73,7 +73,7 @@ module Faraday
 
         @app.call env
       rescue Errno::ECONNREFUSED
-        raise Error::ConnectionFailed, "connection refused"
+        raise Error::ConnectionFailed, $!
       end
     end
   end

lib/faraday/adapter/excon.rb

@@ -33,8 +33,8 @@ module Faraday
         end
 
         @app.call env
-      rescue ::Excon::Errors::SocketError => e
-        raise Error::ConnectionFailed.new(e)
+      rescue ::Excon::Errors::SocketError
+        raise Error::ConnectionFailed, $!
       end
     end
   end

lib/faraday/adapter/net_http.rb

@@ -51,8 +51,8 @@ module Faraday
           else
             http.request http_request, env[:body]
           end
-        rescue Errno::ECONNREFUSED => e
-          raise Error::ConnectionFailed.new(e)
+        rescue Errno::ECONNREFUSED
+          raise Error::ConnectionFailed, $!
         end
 
         response_headers = {}

lib/faraday/adapter/patron.rb

@@ -25,7 +25,7 @@ module Faraday
 
         @app.call env
       rescue Errno::ECONNREFUSED
-        raise Error::ConnectionFailed.new(Errno::ECONNREFUSED)
+        raise Error::ConnectionFailed, $!
       end
 
       # TODO: build in support for multipart streaming if patron supports it.

lib/faraday/adapter/typhoeus.rb

@@ -44,7 +44,7 @@ module Faraday
 
         @app.call env
       rescue Errno::ECONNREFUSED
-        raise Error::ConnectionFailed.new(Errno::ECONNREFUSED)
+        raise Error::ConnectionFailed, $!
       end
 
       def in_parallel(options = {})

lib/faraday/error.rb

@@ -1,28 +1,23 @@
 module Faraday
   module Error
     class ClientError < StandardError
-      def initialize(exception)
-        @inner_exception = exception
-      end
-
-      def message
-        @inner_exception.respond_to?(:message) ?
-          @inner_exception.message             :
-          @inner_exception.to_s
+      def initialize(ex)
+        super(ex.respond_to?(:message) ? ex.message : ex.to_s)
+        @wrapped_exception = ex
       end
 
       def backtrace
-        @inner_exception.backtrace
+        @wrapped_exception.backtrace
       end
 
       alias to_str message
 
       def to_s
-        @inner_exception.to_s
+        @wrapped_exception.to_s
       end
 
       def inspect
-        @inner_exception.inspect
+        %(#<#{self.class}>)
       end
     end