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Differential D12053

test-http-bad-server: move on test from bytes-count to pattern
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Authored by marmoute on Jan 24 2022, 9:46 AM.

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Alphare

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rHG7de3e7451763: test-http-bad-server: move on test from bytes-count to pattern

Summary

This specific test case is now using the new "close when a pattern is seen"
approach compared to the more fragile "that many bytes were sent" approach.

Since such change are still a bit noisy, we split each change in there own
changesets.

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rHG Mercurial

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marmoute created this revision.Jan 24 2022, 9:46 AM

Herald added a reviewer: hg-reviewers. · View Herald TranscriptJan 24 2022, 9:46 AM

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marmoute added a child revision: D12054: test-http-bad-server: modify some `tail` call fit their goal.Jan 24 2022, 9:46 AM

Alphare accepted this revision.Jan 24 2022, 10:18 AM

This revision is now accepted and ready to land.Jan 24 2022, 10:18 AM

✅ refresh by Heptapod after a successful CI run (🐙 💚)

marmoute added a commit: rHG7de3e7451763: test-http-bad-server: move on test from bytes-count to pattern.Jan 25 2022, 4:19 AM

Closed by commit rHG7de3e7451763: test-http-bad-server: move on test from bytes-count to pattern (authored by marmoute). · Explain Why

This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

			Path	Packages
M			tests/test-http-bad-server.t (54 lines)

Diff	ID	Description	Created	Lint	Unit
Base		Base
Diff 1	31756		Jan 24 2022, 9:46 AM	★	★
Diff 2	31877		Jan 24 2022, 1:17 PM	★	★
Diff 3	31929	rHG7de3e745176388556e6394cfdb534131883f6bf3	Jan 21 2022, 10:02 AM	★	★

Commit	Parents	Author	Summary	Date
46295ac265a6	ac4f2cbf3172	Pierre-Yves David		Jan 21 2022, 10:02 AM

Status	Author	Revision
Closed	marmoute	D11997 share-safe: enable by default (BC)
Closed	marmoute	D11996 share-safe: add support for static-http repository
Closed	marmoute	D11995 legacy-revlog: fix requirement computation when cloning legacy repo
Closed	marmoute	D11994 requirements: do not warn about dropping share-safe, unless explicitly set
Closed	marmoute	D11993 sparse: take lock before writing requirements
Closed	marmoute	D11992 largefiles: take lock before writing requirements
Closed	marmoute	D11991 lfs: take lock before writing requirements
Closed	marmoute	D11990 test: simpler requirements matching in test-repo-compengines.t
Closed	marmoute	D11989 test: simpler requirements matching in test-lfs-largefiles.t
Closed	marmoute	D11988 test: simpler requirements matching in test-sidedata.t
Closed	marmoute	D11987 test: simpler requirement matching in test-revlog-v2.t
Closed	marmoute	D11986 test-copies: narrow the format check in test-copies-in-changeset.t
Closed	marmoute	D11985 tests: use debugrequires instead of grepping the file directly
Closed	marmoute	D11984 tests: use debugrequires in test-upgrade-repo.t
Closed	marmoute	D11983 test: do not use `which` to find an exec path in the test
Closed	marmoute	D11982 stream-clone: stop considering working copy only requirements
Closed	marmoute	D12084 stream-clone: also filter the requirement we put in the bundle 2
Closed	marmoute	D12083 requirements: add an official `REVLOG_COMPRESSION_ZSTD` const
Closed	marmoute	D12082 stream-requirements: smoother matching in test-http-protocol.t
Closed	marmoute	D12081 stream-requirements: smoother matching in test-ssh-bundle1.t
Closed	marmoute	D12080 stream-requirements: smoother matching in test-ssh-proto.t
Closed	marmoute	D12079 stream-requirements: smoother matching in test-hgweb-commands.t
Closed	marmoute	D12078 stream-requirements: smoother matching in test-treemanifest.t
Closed	marmoute	D12077 stream-requirements: smoother matching in test-ssh-proto-unbundle.t
Closed	marmoute	D12076 test-bundle: split some variant in there own section
Closed	marmoute	D12075 test-bundle: split each variant in there own section
Closed	marmoute	D12074 test-http-bad-server: abstract the `streamreqs` value
Closed	marmoute	D12073 test-http-bad-server: use the new pattern-reading for a test-case
Closed	marmoute	D12072 test-http-bad-server: use the new pattern-reading for a test-case
Closed	marmoute	D12071 test-http-bad-server: use the new pattern-reading for a test-case
Closed	marmoute	D12070 test-http-bad-server: use the new pattern-reading for a test-case
Closed	marmoute	D12069 test-http-bad-server: use the new pattern-reading for a test-case
Closed	marmoute	D12068 test-http-bad-server: introduce socket closing after reading a pattern
Closed	marmoute	D12067 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12066 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12065 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12064 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12063 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12062 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12061 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12060 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12059 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12058 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12057 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12056 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12055 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12054 test-http-bad-server: modify some `tail` call fit their goal
Closed	marmoute	D12053 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12052 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12051 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12050 test-http-bad-server: move on test from bytes-count to pattern
Closed	marmoute	D12049 test-bad-http-server: introduce sock closing when writing a pattern
Closed	marmoute	D12048 test-http-bad-server: document that the value are actually a list
Closed	marmoute	D12047 test-http-bad-server: refactor the writing logic to avoid early return
Closed	marmoute	D12046 test-http-bad-server: replace the default 65537 value in output
Closed	marmoute	D12045 test-http-bad-server: refactor the reading logic to avoid early return
Closed	marmoute	D12044 test-http-bad-server: factor code dealing with "read" in the new object
Closed	marmoute	D12043 test-http-bad-server: factor code dealing with "write" in the new object
Closed	marmoute	D12042 test-http-bad-server: unify log printing for `sendall` and `write`
Closed	marmoute	D12041 test-http-bad-server: track close condition in an object
Closed	marmoute	D12040 test-http-bad-server: use more readable name for variable
Closed	marmoute	D12039 test-http-bad-server: align output by using `;`
Closed	marmoute	D12038 test-http-bad-server: highlight each test with section
Closed	marmoute	D12037 test-http-bad-server: rename config to use `-`
Closed	marmoute	D12036 test-http-bad-server: move the extension in `testlib`
Closed	marmoute	D12035 requirements: remove the `localrepo.supportedformat` attribute
Closed	marmoute	D12034 requirements: sort _basesupported
Closed	marmoute	D12033 requirements: move the comment about manifestv2 in the module
Closed	marmoute	D12032 stream-clone: add a explicit set list requirements relevant to stream clone
Closed	marmoute	D12031 stream-clone: filter possible missing requirements using all supported one
Closed	marmoute	D12030 requirements: move "bookmark in store" requirements in the right module
Closed	marmoute	D12029 stream-clone: add a explicit test for format change during stream clone
Closed	marmoute	D12028 stream-clone: factor computation of requirement of a stream clone
Closed	marmoute	D12027 stream-clone: factor computation of new clone requirement out
Closed	marmoute	D12026 stream-clone: drop some outdated lines in test-stream-bundle-v2.t

Diff 31756

tests/test-http-bad-server.t

	Exception: connection closed after sending N bytes			Exception: connection closed after sending N bytes


	$ rm -f error.log			$ rm -f error.log

	Server sends incomplete headers for getbundle response			Server sends incomplete headers for getbundle response
	------------------------------------------------------			------------------------------------------------------

	$ hg serve --config badserver.close-after-send-bytes=921 -p $HGPORT -d --pid-file=hg.pid -E error.log			$ hg serve \
				> --config badserver.close-after-send-patterns='(.*Content-Type: application/mercuri){3}' \
				> -p $HGPORT -d --pid-file=hg.pid -E error.log
	$ cat hg.pid > $DAEMON_PIDS			$ cat hg.pid > $DAEMON_PIDS

	TODO this output is terrible			TODO this output is terrible

	$ hg clone http://localhost:$HGPORT/ clone			$ hg clone http://localhost:$HGPORT/ clone
	requesting all changes			requesting all changes
	abort: 'http://localhost:$HGPORT/' does not appear to be an hg repository:			abort: 'http://localhost:$HGPORT/' does not appear to be an hg repository:
	---%<--- (application/mercuri)			---%<--- (application/mercuri)

	---%<---			---%<---

	[255]			[255]

	$ killdaemons.py $DAEMON_PIDS			$ killdaemons.py $DAEMON_PIDS

	$ cat error.log \| "$PYTHON" $TESTDIR/filtertraceback.py			$ cat error.log \| "$PYTHON" $TESTDIR/filtertraceback.py
	readline(~) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n			readline(~) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
	readline(*) -> (27) Accept-Encoding: identity\r\n (glob)			readline(*) -> (27) Accept-Encoding: identity\r\n (glob)
	readline(*) -> (35) accept: application/mercurial-0.1\r\n (glob)			readline(*) -> (35) accept: application/mercurial-0.1\r\n (glob)
	readline(*) -> (2?) host: localhost:$HGPORT\r\n (glob)			readline(*) -> (2?) host: localhost:$HGPORT\r\n (glob)
	readline(*) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n (glob)			readline(*) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n (glob)
	readline(*) -> (2) \r\n (glob)			readline(*) -> (2) \r\n (glob)
	sendall(160 from 160) -> (761) HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercurial-0.1\r\nContent-Length: 431\r\n\r\n (py36 !)			sendall(160) -> HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercurial-0.1\r\nContent-Length: 431\r\n\r\n (py36 !)
	sendall(431 from 431) -> (330) batch branchmap $USUAL_BUNDLE2_CAPS_NO_PHASES$ changegroupsubset compression=none getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash (py36 !)			sendall(431) -> batch branchmap $USUAL_BUNDLE2_CAPS_NO_PHASES$ changegroupsubset compression=none getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash (py36 !)
	write(160 from 160) -> (780) HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercurial-0.1\r\nContent-Length: 431\r\n\r\n (py3 no-py36 !)			write(160) -> HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercurial-0.1\r\nContent-Length: 431\r\n\r\n (py3 no-py36 !)
	write(431 from 431) -> (330) batch branchmap $USUAL_BUNDLE2_CAPS_NO_PHASES$ changegroupsubset compression=none getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash (py3 no-py36 !)			write(431) -> batch branchmap $USUAL_BUNDLE2_CAPS_NO_PHASES$ changegroupsubset compression=none getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash (py3 no-py36 !)
	write(36 from 36) -> (885) HTTP/1.1 200 Script output follows\r\n (no-py3 !)			write(36) -> HTTP/1.1 200 Script output follows\r\n (no-py3 !)
	write(23 from 23) -> (862) Server: badhttpserver\r\n (no-py3 !)			write(23) -> Server: badhttpserver\r\n (no-py3 !)
	write(37 from 37) -> (825) Date: $HTTP_DATE$\r\n (no-py3 !)			write(37) -> Date: $HTTP_DATE$\r\n (no-py3 !)
	write(41 from 41) -> (784) Content-Type: application/mercurial-0.1\r\n (no-py3 !)			write(41) -> Content-Type: application/mercurial-0.1\r\n (no-py3 !)
	write(21 from 21) -> (763) Content-Length: 431\r\n (no-py3 !)			write(21) -> Content-Length: 431\r\n (no-py3 !)
	write(2 from 2) -> (761) \r\n (no-py3 !)			write(2) -> \r\n (no-py3 !)
	write(431 from 431) -> (330) batch branchmap $USUAL_BUNDLE2_CAPS_NO_PHASES$ changegroupsubset compression=none getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash (no-py3 !)			write(431) -> batch branchmap $USUAL_BUNDLE2_CAPS_NO_PHASES$ changegroupsubset compression=none getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash (no-py3 !)
	readline(~) -> (26) GET /?cmd=batch HTTP/1.1\r\n			readline(~) -> (26) GET /?cmd=batch HTTP/1.1\r\n
	readline(*) -> (27) Accept-Encoding: identity\r\n (glob)			readline(*) -> (27) Accept-Encoding: identity\r\n (glob)
	readline(*) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n (glob)			readline(*) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n (glob)
	readline(*) -> (41) x-hgarg-1: cmds=heads+%3Bknown+nodes%3D\r\n (glob)			readline(*) -> (41) x-hgarg-1: cmds=heads+%3Bknown+nodes%3D\r\n (glob)
	readline(*) -> (61) x-hgproto-1: 0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull\r\n (glob)			readline(*) -> (61) x-hgproto-1: 0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull\r\n (glob)
	readline(*) -> (35) accept: application/mercurial-0.1\r\n (glob)			readline(*) -> (35) accept: application/mercurial-0.1\r\n (glob)
	readline(*) -> (2?) host: localhost:$HGPORT\r\n (glob)			readline(*) -> (2?) host: localhost:$HGPORT\r\n (glob)
	readline(*) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n (glob)			readline(*) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n (glob)
	readline(*) -> (2) \r\n (glob)			readline(*) -> (2) \r\n (glob)
	sendall(159 from 159) -> (171) HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercurial-0.1\r\nContent-Length: 42\r\n\r\n (py36 !)			sendall(159) -> HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercurial-0.1\r\nContent-Length: 42\r\n\r\n (py36 !)
	sendall(42 from 42) -> (129) 96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n; (py36 !)			sendall(42) -> 96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n; (py36 !)
	write(159 from 159) -> (171) HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercurial-0.1\r\nContent-Length: 42\r\n\r\n (py3 no-py36 !)			write(159) -> HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercurial-0.1\r\nContent-Length: 42\r\n\r\n (py3 no-py36 !)
	write(42 from 42) -> (129) 96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n; (py3 no-py36 !)			write(42) -> 96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n; (py3 no-py36 !)
	write(36 from 36) -> (294) HTTP/1.1 200 Script output follows\r\n (no-py3 !)			write(36) -> HTTP/1.1 200 Script output follows\r\n (no-py3 !)
	write(23 from 23) -> (271) Server: badhttpserver\r\n (no-py3 !)			write(23) -> Server: badhttpserver\r\n (no-py3 !)
	write(37 from 37) -> (234) Date: $HTTP_DATE$\r\n (no-py3 !)			write(37) -> Date: $HTTP_DATE$\r\n (no-py3 !)
	write(41 from 41) -> (193) Content-Type: application/mercurial-0.1\r\n (no-py3 !)			write(41) -> Content-Type: application/mercurial-0.1\r\n (no-py3 !)
	write(20 from 20) -> (173) Content-Length: 42\r\n (no-py3 !)			write(20) -> Content-Length: 42\r\n (no-py3 !)
	write(2 from 2) -> (171) \r\n (no-py3 !)			write(2) -> \r\n (no-py3 !)
	write(42 from 42) -> (129) 96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n; (no-py3 !)			write(42) -> 96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n; (no-py3 !)
	readline(~) -> (30) GET /?cmd=getbundle HTTP/1.1\r\n			readline(~) -> (30) GET /?cmd=getbundle HTTP/1.1\r\n
	readline(*) -> (27) Accept-Encoding: identity\r\n (glob)			readline(*) -> (27) Accept-Encoding: identity\r\n (glob)
	readline(*) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n (glob)			readline(*) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n (glob)
	readline(*) -> (440) x-hgarg-1: bookmarks=1&bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps%250Astream%253Dv2&cg=1&common=0000000000000000000000000000000000000000&heads=96ee1d7354c4ad7372047672c36a1f561e3a6a4c&listkeys=phases%2Cbookmarks\r\n (glob)			readline(*) -> (440) x-hgarg-1: bookmarks=1&bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps%250Astream%253Dv2&cg=1&common=0000000000000000000000000000000000000000&heads=96ee1d7354c4ad7372047672c36a1f561e3a6a4c&listkeys=phases%2Cbookmarks\r\n (glob)
	readline(*) -> (61) x-hgproto-1: 0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull\r\n (glob)			readline(*) -> (61) x-hgproto-1: 0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull\r\n (glob)
	readline(*) -> (35) accept: application/mercurial-0.1\r\n (glob)			readline(*) -> (35) accept: application/mercurial-0.1\r\n (glob)
	readline(*) -> (2?) host: localhost:$HGPORT\r\n (glob)			readline(*) -> (2?) host: localhost:$HGPORT\r\n (glob)
	readline(*) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n (glob)			readline(*) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n (glob)
	readline(*) -> (2) \r\n (glob)			readline(*) -> (2) \r\n (glob)
	sendall(129 from 167) -> (0) HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercuri (py36 !)			sendall(129 from 167) -> (0) HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercuri (py36 !)
	write(129 from 167) -> (0) HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercuri (py3 no-py36 !)			write(129 from 167) -> (0) HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercuri (py3 no-py36 !)
	write(36 from 36) -> (93) HTTP/1.1 200 Script output follows\r\n (no-py3 !)			write(36) -> HTTP/1.1 200 Script output follows\r\n (no-py3 !)
	write(23 from 23) -> (70) Server: badhttpserver\r\n (no-py3 !)			write(23) -> Server: badhttpserver\r\n (no-py3 !)
	write(37 from 37) -> (33) Date: $HTTP_DATE$\r\n (no-py3 !)			write(37) -> Date: $HTTP_DATE$\r\n (no-py3 !)
	write(33 from 41) -> (0) Content-Type: application/mercuri (no-py3 !)			write(33 from 41) -> (0) Content-Type: application/mercuri (no-py3 !)
	write limit reached; closing socket			write limit reached; closing socket
	$LOCALIP - - [$ERRDATE$] Exception happened during processing request '/?cmd=getbundle': (glob)			$LOCALIP - - [$ERRDATE$] Exception happened during processing request '/?cmd=getbundle': (glob)
	Traceback (most recent call last):			Traceback (most recent call last):
	Exception: connection closed after sending N bytes			Exception: connection closed after sending N bytes

	write(293) -> HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercurial-0.2\r\nTransfer-Encoding: chunked\r\n\r\nHTTP/1.1 500 Internal Server Error\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nTransfer-Encoding: chunked\r\n\r\n (py3 no-py36 !)			write(293) -> HTTP/1.1 200 Script output follows\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nContent-Type: application/mercurial-0.2\r\nTransfer-Encoding: chunked\r\n\r\nHTTP/1.1 500 Internal Server Error\r\nServer: badhttpserver\r\nDate: $HTTP_DATE$\r\nTransfer-Encoding: chunked\r\n\r\n (py3 no-py36 !)