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-rw-r--r--lib/rainbows/fiber/io.rb4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/rainbows/fiber/io.rb b/lib/rainbows/fiber/io.rb
index bc6c0fe..5c51cb9 100644
--- a/lib/rainbows/fiber/io.rb
+++ b/lib/rainbows/fiber/io.rb
@@ -36,13 +36,13 @@ module Rainbows
 
       # used for reading headers (respecting keepalive_timeout)
       def read_timeout
-        expire = false
+        expire = nil
         begin
           to_io.read_nonblock(16384)
         rescue Errno::EAGAIN
           return if expire && expire < Time.now
           RD[self] = false
-          expire = Time.now + G.kato
+          expire ||= Time.now + G.kato
           ::Fiber.yield
           RD.delete(self)
           retry