26 lines
923 B
Python
26 lines
923 B
Python
"""
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Modify a streamed response.
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Generally speaking, we recommend *not* to stream messages you need to modify.
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Modifying streamed responses is tricky and brittle:
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- If the transfer encoding isn't chunked, you cannot simply change the content length.
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- If you want to replace all occurrences of "foobar", make sure to catch the cases
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where one chunk ends with [...]foo" and the next starts with "bar[...].
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"""
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from collections.abc import Iterable
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def modify(data: bytes) -> bytes | Iterable[bytes]:
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"""
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This function will be called for each chunk of request/response body data that arrives at the proxy,
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and once at the end of the message with an empty bytes argument (b"").
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It may either return bytes or an iterable of bytes (which would result in multiple HTTP/2 data frames).
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"""
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return data.replace(b"foo", b"bar")
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def responseheaders(flow):
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flow.response.stream = modify
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