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Merge pull request #7960 from parente/set-no-cache-header
Ensure Cache-Control is set once and only once
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commit
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@ -404,7 +404,7 @@ class FileFindHandler(web.StaticFileHandler):
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# disable browser caching, rely on 304 replies for savings
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if "v" not in self.request.arguments or \
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any(self.request.path.startswith(path) for path in self.no_cache_paths):
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self.add_header("Cache-Control", "no-cache")
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self.set_header("Cache-Control", "no-cache")
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def initialize(self, path, default_filename=None, no_cache_paths=None):
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self.no_cache_paths = no_cache_paths or []
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