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828ba0c2e7
This allow's trailers without the initial Trailer header announcement. In HTTP/2 the stream ends with any frame containing END_SREAM. In the case of trailers, it is a final HEADERS frame after all the DATA frames. Therefore we do not need to explicitly check for the trailer announcement header, but can simply wait until the response message / stream has ended.
29 lines
984 B
Python
29 lines
984 B
Python
"""
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This script simply prints all received HTTP Trailers.
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HTTP requests and responses can container trailing headers which are sent after
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the body is fully transmitted. Such trailers need to be announced in the initial
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headers by name, so the receiving endpoint can wait and read them after the
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body.
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"""
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from mitmproxy import http
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from mitmproxy.net.http import Headers
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def request(flow: http.HTTPFlow):
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if flow.request.trailers:
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print("HTTP Trailers detected! Request contains:", flow.request.trailers)
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def response(flow: http.HTTPFlow):
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if flow.response.trailers:
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print("HTTP Trailers detected! Response contains:", flow.response.trailers)
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if flow.request.path == "/inject_trailers":
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flow.response.headers["trailer"] = "x-my-injected-trailer-header"
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flow.response.trailers = Headers([
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(b"x-my-injected-trailer-header", b"foobar")
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])
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print("Injected a new trailer...", flow.response.headers["trailer"])
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