##// END OF EJS Templates
upstream » mercurial-mirror
RSS

Clone from https://www.mercurial-scm.org/repo/hg-all

sshpeer: initial definition and implementation of new SSH protocol...
sshpeer: initial definition and implementation of new SSH protocol The existing SSH protocol has several design flaws. Future commits will elaborate on these flaws as new features are introduced to combat these flaws. For now, hopefully you can take me for my word that a ground up rewrite of the SSH protocol is needed. This commit lays the foundation for a new SSH protocol by defining a mechanism to upgrade the SSH transport channel away from the default (version 1) protocol to something modern (which we'll call "version 2" for now). This upgrade process is detailed in the internals documentation for the wire protocol. The gist of it is the client sends a request line preceding the "hello" command/line which basically says "I'm requesting an upgrade: here's what I support." If the server recognizes that line, it processes the upgrade request and the transport channel is switched to use the new version of the protocol. If not, it sends an empty response, which is how all Mercurial SSH servers from the beginning of time reacted to unknown commands. The upgrade request is effectively ignored and the client continues to use the existing version of the protocol as if nothing happened. The new version of the SSH protocol is completely identical to version 1 aside from the upgrade dance and the bytes that follow. The immediate bytes that follow the protocol switch are defined to be a length framed "capabilities: " line containing the remote's advertised capabilities. In reality, this looks very similar to what the "hello" response would look like. But it will evolve quickly. The methodology by which the protocol will evolve is important. I'm not going to introduce the new protocol all at once. That would likely lead to endless bike shedding and forward progress would stall. Instead, I intend to tricle out new features and diversions from the existing protocol in small, incremental changes. To support the gradual evolution of the protocol, the on-the-wire advertised protocol name contains an "exp" to denote "experimental" and a 4 digit field to capture the sub-version of the protocol. Whenever we make a BC change to the wire protocol, we can increment this version and lock out all older clients because it will appear as a completely different protocol version. This means we can incur as many breaking changes as we want. We don't have to commit to supporting any one feature or idea for a long period of time. We can even evolve the handshake mechanism, because that is defined as being an implementation detail of the negotiated protocol version! Hopefully this lowers the barrier to accepting changes to the protocol and for experimenting with "radical" ideas during its development. In core, sshpeer received most of the attention. We haven't even implemented the server bits for the new protocol in core yet. Instead, we add very primitive support to our test server, mainly just to exercise the added code paths in sshpeer. Differential Revision: https://phab.mercurial-scm.org/D2061 # no-check-commit because of required foo_bar naming
Boris Feld - - Load All Authors

File last commit:

r35831:76832637 stable
r35994:48a3a928 default
Show More
test-clone-uncompressed.t
510 lines | 16.2 KiB | text/troff | Tads3Lexer
/ tests / test-clone-uncompressed.t
History | Annotation | Raw |Copy content |Copy permalink
#require serve
#testcases stream-legacy stream-bundle2
#if stream-bundle2
$ cat << EOF >> $HGRCPATH
> [experimental]
> bundle2.stream = yes
> EOF
#endif
Initialize repository
the status call is to check for issue5130
$ hg init server
$ cd server
$ touch foo
$ hg -q commit -A -m initial
>>> for i in range(1024):
... with open(str(i), 'wb') as fh:
... fh.write(str(i))
$ hg -q commit -A -m 'add a lot of files'
$ hg st
$ hg --config server.uncompressed=false serve -p $HGPORT -d --pid-file=hg.pid
$ cat hg.pid > $DAEMON_PIDS
$ cd ..
Cannot stream clone when server.uncompressed is set
$ get-with-headers.py $LOCALIP:$HGPORT '?cmd=stream_out'
200 Script output follows
1
#if stream-legacy
$ hg debugcapabilities http://localhost:$HGPORT
Main capabilities:
batch
branchmap
$USUAL_BUNDLE2_CAPS_SERVER$
changegroupsubset
compression=$BUNDLE2_COMPRESSIONS$
getbundle
httpheader=1024
httpmediatype=0.1rx,0.1tx,0.2tx
known
lookup
pushkey
unbundle=HG10GZ,HG10BZ,HG10UN
unbundlehash
Bundle2 capabilities:
HG20
bookmarks
changegroup
01
02
digests
md5
sha1
sha512
error
abort
unsupportedcontent
pushraced
pushkey
hgtagsfnodes
listkeys
phases
heads
pushkey
remote-changegroup
http
https
$ hg clone --stream -U http://localhost:$HGPORT server-disabled
warning: stream clone requested but server has them disabled
requesting all changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 1025 changes to 1025 files
new changesets 96ee1d7354c4:c17445101a72
$ get-with-headers.py $LOCALIP:$HGPORT '?cmd=getbundle' content-type --bodyfile body --hgproto 0.2 --requestheader "x-hgarg-1=bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=0&common=0000000000000000000000000000000000000000&heads=c17445101a72edac06facd130d14808dfbd5c7c2&stream=1"
200 Script output follows
content-type: application/mercurial-0.2
$ f --size body --hexdump --bytes 100
body: size=232
0000: 04 6e 6f 6e 65 48 47 32 30 00 00 00 00 00 00 00 |.noneHG20.......|
0010: cf 0b 45 52 52 4f 52 3a 41 42 4f 52 54 00 00 00 |..ERROR:ABORT...|
0020: 00 01 01 07 3c 04 72 6d 65 73 73 61 67 65 73 74 |....<.rmessagest|
0030: 72 65 61 6d 20 64 61 74 61 20 72 65 71 75 65 73 |ream data reques|
0040: 74 65 64 20 62 75 74 20 73 65 72 76 65 72 20 64 |ted but server d|
0050: 6f 65 73 20 6e 6f 74 20 61 6c 6c 6f 77 20 74 68 |oes not allow th|
0060: 69 73 20 66 |is f|
#endif
#if stream-bundle2
$ hg debugcapabilities http://localhost:$HGPORT
Main capabilities:
batch
branchmap
$USUAL_BUNDLE2_CAPS_SERVER$
changegroupsubset
compression=$BUNDLE2_COMPRESSIONS$
getbundle
httpheader=1024
httpmediatype=0.1rx,0.1tx,0.2tx
known
lookup
pushkey
unbundle=HG10GZ,HG10BZ,HG10UN
unbundlehash
Bundle2 capabilities:
HG20
bookmarks
changegroup
01
02
digests
md5
sha1
sha512
error
abort
unsupportedcontent
pushraced
pushkey
hgtagsfnodes
listkeys
phases
heads
pushkey
remote-changegroup
http
https
$ hg clone --stream -U http://localhost:$HGPORT server-disabled
warning: stream clone requested but server has them disabled
requesting all changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 1025 changes to 1025 files
new changesets 96ee1d7354c4:c17445101a72
$ get-with-headers.py $LOCALIP:$HGPORT '?cmd=getbundle' content-type --bodyfile body --hgproto 0.2 --requestheader "x-hgarg-1=bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=0&common=0000000000000000000000000000000000000000&heads=c17445101a72edac06facd130d14808dfbd5c7c2&stream=1"
200 Script output follows
content-type: application/mercurial-0.2
$ f --size body --hexdump --bytes 100
body: size=232
0000: 04 6e 6f 6e 65 48 47 32 30 00 00 00 00 00 00 00 |.noneHG20.......|
0010: cf 0b 45 52 52 4f 52 3a 41 42 4f 52 54 00 00 00 |..ERROR:ABORT...|
0020: 00 01 01 07 3c 04 72 6d 65 73 73 61 67 65 73 74 |....<.rmessagest|
0030: 72 65 61 6d 20 64 61 74 61 20 72 65 71 75 65 73 |ream data reques|
0040: 74 65 64 20 62 75 74 20 73 65 72 76 65 72 20 64 |ted but server d|
0050: 6f 65 73 20 6e 6f 74 20 61 6c 6c 6f 77 20 74 68 |oes not allow th|
0060: 69 73 20 66 |is f|
#endif
$ killdaemons.py
$ cd server
$ hg serve -p $HGPORT -d --pid-file=hg.pid
$ cat hg.pid > $DAEMON_PIDS
$ cd ..
Basic clone
#if stream-legacy
$ hg clone --stream -U http://localhost:$HGPORT clone1
streaming all changes
1027 files to transfer, 96.3 KB of data
transferred 96.3 KB in * seconds (*/sec) (glob)
searching for changes
no changes found
#endif
#if stream-bundle2
$ hg clone --stream -U http://localhost:$HGPORT clone1
streaming all changes
1030 files to transfer, 96.4 KB of data
transferred 96.4 KB in * seconds (* */sec) (glob)
$ ls -1 clone1/.hg/cache
branch2-served
rbc-names-v1
rbc-revs-v1
#endif
getbundle requests with stream=1 are uncompressed
$ get-with-headers.py $LOCALIP:$HGPORT '?cmd=getbundle' content-type --bodyfile body --hgproto '0.1 0.2 comp=zlib,none' --requestheader "x-hgarg-1=bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=0&common=0000000000000000000000000000000000000000&heads=c17445101a72edac06facd130d14808dfbd5c7c2&stream=1"
200 Script output follows
content-type: application/mercurial-0.2
$ f --size --hex --bytes 256 body
body: size=112230
0000: 04 6e 6f 6e 65 48 47 32 30 00 00 00 00 00 00 00 |.noneHG20.......|
0010: 70 07 53 54 52 45 41 4d 32 00 00 00 00 03 00 09 |p.STREAM2.......|
0020: 05 09 04 0c 35 62 79 74 65 63 6f 75 6e 74 39 38 |....5bytecount98|
0030: 37 35 38 66 69 6c 65 63 6f 75 6e 74 31 30 33 30 |758filecount1030|
0040: 72 65 71 75 69 72 65 6d 65 6e 74 73 64 6f 74 65 |requirementsdote|
0050: 6e 63 6f 64 65 25 32 43 66 6e 63 61 63 68 65 25 |ncode%2Cfncache%|
0060: 32 43 67 65 6e 65 72 61 6c 64 65 6c 74 61 25 32 |2Cgeneraldelta%2|
0070: 43 72 65 76 6c 6f 67 76 31 25 32 43 73 74 6f 72 |Crevlogv1%2Cstor|
0080: 65 00 00 80 00 73 08 42 64 61 74 61 2f 30 2e 69 |e....s.Bdata/0.i|
0090: 00 03 00 01 00 00 00 00 00 00 00 02 00 00 00 01 |................|
00a0: 00 00 00 00 00 00 00 01 ff ff ff ff ff ff ff ff |................|
00b0: 80 29 63 a0 49 d3 23 87 bf ce fe 56 67 92 67 2c |.)c.I.#....Vg.g,|
00c0: 69 d1 ec 39 00 00 00 00 00 00 00 00 00 00 00 00 |i..9............|
00d0: 75 30 73 08 42 64 61 74 61 2f 31 2e 69 00 03 00 |u0s.Bdata/1.i...|
00e0: 01 00 00 00 00 00 00 00 02 00 00 00 01 00 00 00 |................|
00f0: 00 00 00 00 01 ff ff ff ff ff ff ff ff f9 76 da |..............v.|
--uncompressed is an alias to --stream
#if stream-legacy
$ hg clone --uncompressed -U http://localhost:$HGPORT clone1-uncompressed
streaming all changes
1027 files to transfer, 96.3 KB of data
transferred 96.3 KB in * seconds (*/sec) (glob)
searching for changes
no changes found
#endif
#if stream-bundle2
$ hg clone --uncompressed -U http://localhost:$HGPORT clone1-uncompressed
streaming all changes
1030 files to transfer, 96.4 KB of data
transferred 96.4 KB in * seconds (* */sec) (glob)
#endif
Clone with background file closing enabled
#if stream-legacy
$ hg --debug --config worker.backgroundclose=true --config worker.backgroundcloseminfilecount=1 clone --stream -U http://localhost:$HGPORT clone-background | grep -v adding
using http://localhost:$HGPORT/
sending capabilities command
sending branchmap command
streaming all changes
sending stream_out command
1027 files to transfer, 96.3 KB of data
starting 4 threads for background file closing
transferred 96.3 KB in * seconds (*/sec) (glob)
query 1; heads
sending batch command
searching for changes
all remote heads known locally
no changes found
sending getbundle command
bundle2-input-bundle: with-transaction
bundle2-input-part: "listkeys" (params: 1 mandatory) supported
bundle2-input-part: "phase-heads" supported
bundle2-input-part: total payload size 24
bundle2-input-bundle: 1 parts total
checking for updated bookmarks
#endif
#if stream-bundle2
$ hg --debug --config worker.backgroundclose=true --config worker.backgroundcloseminfilecount=1 clone --stream -U http://localhost:$HGPORT clone-background | grep -v adding
using http://localhost:$HGPORT/
sending capabilities command
query 1; heads
sending batch command
streaming all changes
sending getbundle command
bundle2-input-bundle: with-transaction
bundle2-input-part: "stream2" (params: 3 mandatory) supported
applying stream bundle
1030 files to transfer, 96.4 KB of data
starting 4 threads for background file closing
starting 4 threads for background file closing
transferred 96.4 KB in * seconds (* */sec) (glob)
bundle2-input-part: total payload size 112077
bundle2-input-part: "listkeys" (params: 1 mandatory) supported
bundle2-input-bundle: 1 parts total
checking for updated bookmarks
#endif
Cannot stream clone when there are secret changesets
$ hg -R server phase --force --secret -r tip
$ hg clone --stream -U http://localhost:$HGPORT secret-denied
warning: stream clone requested but server has them disabled
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
new changesets 96ee1d7354c4
$ killdaemons.py
Streaming of secrets can be overridden by server config
$ cd server
$ hg serve --config server.uncompressedallowsecret=true -p $HGPORT -d --pid-file=hg.pid
$ cat hg.pid > $DAEMON_PIDS
$ cd ..
#if stream-legacy
$ hg clone --stream -U http://localhost:$HGPORT secret-allowed
streaming all changes
1027 files to transfer, 96.3 KB of data
transferred 96.3 KB in * seconds (*/sec) (glob)
searching for changes
no changes found
#endif
#if stream-bundle2
$ hg clone --stream -U http://localhost:$HGPORT secret-allowed
streaming all changes
1030 files to transfer, 96.4 KB of data
transferred 96.4 KB in * seconds (* */sec) (glob)
#endif
$ killdaemons.py
Verify interaction between preferuncompressed and secret presence
$ cd server
$ hg serve --config server.preferuncompressed=true -p $HGPORT -d --pid-file=hg.pid
$ cat hg.pid > $DAEMON_PIDS
$ cd ..
$ hg clone -U http://localhost:$HGPORT preferuncompressed-secret
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
new changesets 96ee1d7354c4
$ killdaemons.py
Clone not allowed when full bundles disabled and can't serve secrets
$ cd server
$ hg serve --config server.disablefullbundle=true -p $HGPORT -d --pid-file=hg.pid
$ cat hg.pid > $DAEMON_PIDS
$ cd ..
$ hg clone --stream http://localhost:$HGPORT secret-full-disabled
warning: stream clone requested but server has them disabled
requesting all changes
remote: abort: server has pull-based clones disabled
abort: pull failed on remote
(remove --pull if specified or upgrade Mercurial)
[255]
Local stream clone with secrets involved
(This is just a test over behavior: if you have access to the repo's files,
there is no security so it isn't important to prevent a clone here.)
$ hg clone -U --stream server local-secret
warning: stream clone requested but server has them disabled
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
new changesets 96ee1d7354c4
Stream clone while repo is changing:
$ mkdir changing
$ cd changing
extension for delaying the server process so we reliably can modify the repo
while cloning
$ cat > delayer.py <<EOF
> import time
> from mercurial import extensions, vfs
> def __call__(orig, self, path, *args, **kwargs):
> if path == 'data/f1.i':
> time.sleep(2)
> return orig(self, path, *args, **kwargs)
> extensions.wrapfunction(vfs.vfs, '__call__', __call__)
> EOF
prepare repo with small and big file to cover both code paths in emitrevlogdata
$ hg init repo
$ touch repo/f1
$ $TESTDIR/seq.py 50000 > repo/f2
$ hg -R repo ci -Aqm "0"
$ hg serve -R repo -p $HGPORT1 -d --pid-file=hg.pid --config extensions.delayer=delayer.py
$ cat hg.pid >> $DAEMON_PIDS
clone while modifying the repo between stating file with write lock and
actually serving file content
$ hg clone -q --stream -U http://localhost:$HGPORT1 clone &
$ sleep 1
$ echo >> repo/f1
$ echo >> repo/f2
$ hg -R repo ci -m "1"
$ wait
$ hg -R clone id
000000000000
$ cd ..
Stream repository with bookmarks
--------------------------------
(revert introduction of secret changeset)
$ hg -R server phase --draft 'secret()'
add a bookmark
$ hg -R server bookmark -r tip some-bookmark
clone it
#if stream-legacy
$ hg clone --stream http://localhost:$HGPORT with-bookmarks
streaming all changes
1027 files to transfer, 96.3 KB of data
transferred 96.3 KB in * seconds (*) (glob)
searching for changes
no changes found
updating to branch default
1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
#endif
#if stream-bundle2
$ hg clone --stream http://localhost:$HGPORT with-bookmarks
streaming all changes
1033 files to transfer, 96.6 KB of data
transferred 96.6 KB in * seconds (* */sec) (glob)
updating to branch default
1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
#endif
$ hg -R with-bookmarks bookmarks
some-bookmark 1:c17445101a72
Stream repository with phases
-----------------------------
Clone as publishing
$ hg -R server phase -r 'all()'
0: draft
1: draft
#if stream-legacy
$ hg clone --stream http://localhost:$HGPORT phase-publish
streaming all changes
1027 files to transfer, 96.3 KB of data
transferred 96.3 KB in * seconds (*) (glob)
searching for changes
no changes found
updating to branch default
1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
#endif
#if stream-bundle2
$ hg clone --stream http://localhost:$HGPORT phase-publish
streaming all changes
1033 files to transfer, 96.6 KB of data
transferred 96.6 KB in * seconds (* */sec) (glob)
updating to branch default
1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
#endif
$ hg -R phase-publish phase -r 'all()'
0: public
1: public
Clone as non publishing
$ cat << EOF >> server/.hg/hgrc
> [phases]
> publish = False
> EOF
$ killdaemons.py
$ hg -R server serve -p $HGPORT -d --pid-file=hg.pid
$ cat hg.pid > $DAEMON_PIDS
#if stream-legacy
With v1 of the stream protocol, changeset are always cloned as public. It make
stream v1 unsuitable for non-publishing repository.
$ hg clone --stream http://localhost:$HGPORT phase-no-publish
streaming all changes
1027 files to transfer, 96.3 KB of data
transferred 96.3 KB in * seconds (*) (glob)
searching for changes
no changes found
updating to branch default
1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg -R phase-no-publish phase -r 'all()'
0: public
1: public
#endif
#if stream-bundle2
$ hg clone --stream http://localhost:$HGPORT phase-no-publish
streaming all changes
1034 files to transfer, 96.7 KB of data
transferred 96.7 KB in * seconds (* */sec) (glob)
updating to branch default
1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg -R phase-no-publish phase -r 'all()'
0: draft
1: draft
#endif
$ killdaemons.py