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don't reuse closed connections, refs #4451 (#4458)

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Maximilian Hils 2021-02-18 23:07:18 +01:00 committed by GitHub
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commit 70e08c880c
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1
CHANGELOG.md
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@ -56,6 +56,7 @@ If you depend on these features, please raise your voice in
* `--modify-headers` now works correctly when modifying a header that is also part of the filter expression (@Prinzhorn)
* Fix SNI-related reproducibility issues when exporting to curl/httpie commands. (@dkasak)
* Add option `export_preserve_original_ip` to force exported command to connect to IP from original request. Only supports curl at the moment. (@dkasak)
* Major proxy protocol testing (@r00t-)
* --- TODO: add new PRs above this line ---
* ... and various other fixes, documentation improvements, dependency version bumps, etc.

1
mitmproxy/proxy/layers/http/__init__.py
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@ -628,6 +628,7 @@ class HttpLayer(layer.Layer):
h2_to_h1 = self.context.client.alpn == b"h2" and not conn_is_pending_or_h2
connection_suitable = (
event.connection_spec_matches(connection)
and connection.connected
and not h2_to_h1
)
if connection_suitable:

23
test/mitmproxy/proxy/layers/http/test_http.py
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@ -969,3 +969,26 @@ def test_upgrade(tctx, proto):
<< Log("Sent HTTP 101 response, but no protocol is enabled to upgrade to.", "warn")
<< CloseConnection(tctx.client)
)
def test_dont_reuse_closed(tctx):
"""Test that a closed connection is not reused."""
server = Placeholder(Server)
server2 = Placeholder(Server)
assert (
Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False)
>> DataReceived(tctx.client, b"GET http://example.com/ HTTP/1.1\r\nHost: example.com\r\n\r\n")
<< OpenConnection(server)
>> reply(None)
<< SendData(server, b"GET / HTTP/1.1\r\nHost: example.com\r\n\r\n")
>> DataReceived(server, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")
<< SendData(tctx.client, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")
>> ConnectionClosed(server)
<< CloseConnection(server)
>> DataReceived(tctx.client, b"GET http://example.com/two HTTP/1.1\r\nHost: example.com\r\n\r\n")
<< OpenConnection(server2)
>> reply(None)
<< SendData(server2, b"GET /two HTTP/1.1\r\nHost: example.com\r\n\r\n")
>> DataReceived(server2, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")
<< SendData(tctx.client, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")
)