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@@ -59,14 +59,14 @@ module Thin
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       @request.remote_address = remote_address
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       # TODO - remove excess documentation / move it somewhere more sensible.
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-      # (interface specs!) - (rack)
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+      # (interface specs!) - (rack)
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       # Connection may be closed unless the App#call response was a [100, ...]
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       # It should be noted that connection objects will linger until this 
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       # callback is no longer referenced, so be tidy!
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       @request.env['async.callback'] = method(:post_process)
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-      # When we're under a non-async framework like rails, we can still spawn
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+      # When we're under a non-async framework like rails, we can still spawn
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       # off async responses using the callback info, so there's little point
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       # in removing this.
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       response = AsyncResponse
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@@ -100,7 +100,7 @@ module Thin
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       unless persistent?
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         # If the body is deferred, then close_connection needs to happen after
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-        # the last chunk has been sent.
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+        # the last chunk has been sent.
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         if @response.body.kind_of?(EventMachine::Deferrable)
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           @response.body.callback { close_connection_after_writing }
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           @response.body.errback  { close_connection_after_writing }
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@@ -113,12 +113,12 @@ module Thin
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     rescue Object
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       handle_error
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     ensure
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-      # If the body is being deferred, then terminate afterward.
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+      # If the body is being deferred, then terminate afterward.
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       if @response.body.kind_of?(EventMachine::Deferrable)
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         @response.body.callback { terminate_request }
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       else
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         # Don't terminate the response if we're going async.
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-        terminate_request unless result.first == 100
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+        terminate_request unless result && result.first == 100
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       end
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     end
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