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-rw-r--r--lib/rainbows/event_machine/response_chunk_pipe.rb2
-rw-r--r--lib/rainbows/rev/deferred_response.rb2
2 files changed, 2 insertions, 2 deletions
diff --git a/lib/rainbows/event_machine/response_chunk_pipe.rb b/lib/rainbows/event_machine/response_chunk_pipe.rb
index ee8d260..5caf250 100644
--- a/lib/rainbows/event_machine/response_chunk_pipe.rb
+++ b/lib/rainbows/event_machine/response_chunk_pipe.rb
@@ -11,7 +11,7 @@ module Rainbows::EventMachine::ResponseChunkPipe
   def notify_readable
     begin
       data = @io.read_nonblock(16384, BUF)
-      @client.write(sprintf("%x\r\n", data.size))
+      @client.write("#{data.size.to_s(16)}\r\n")
       @client.write(data)
       @client.write("\r\n")
     rescue Errno::EINTR
diff --git a/lib/rainbows/rev/deferred_response.rb b/lib/rainbows/rev/deferred_response.rb
index cc4ea10..243637d 100644
--- a/lib/rainbows/rev/deferred_response.rb
+++ b/lib/rainbows/rev/deferred_response.rb
@@ -13,7 +13,7 @@ module Rainbows
       end
 
       def on_read(data)
-        @do_chunk and @client.write(sprintf("%x\r\n", data.size))
+        @do_chunk and @client.write("#{data.size.to_s(16)}\r\n")
         @client.write(data)
         @do_chunk and @client.write("\r\n")
       end