reduce dependency on IO#write_nonblock

kgio_trywrite is superior if it is available.

1 files changed, 7 insertions, 1 deletions

diff --git a/lib/rainbows/error.rb b/lib/rainbows/error.rb
index bdbfdc5..68cdec4 100644
--- a/lib/rainbows/error.rb
+++ b/lib/rainbows/error.rb
@@ -9,7 +9,13 @@ module Rainbows::Error
   # if the socket is already closed or broken.  We'll always ensure
   # the socket is closed at the end of this function
   def self.write(io, e)
-    msg = response(e) and io.write_nonblock(msg)
+    if msg = response(e)
+      if io.respond_to?(:kgio_trywrite)
+        io.kgio_trywrite(msg)
+      else
+        io.write_nonblock(msg)
+      end
+    end
     rescue
   end