annotate tests/test-wireproto-command-capabilities.t @ 40178:46a40bce3ae0

wireprotov2: define and implement "filesdata" command

Previously, the only way to access file revision data was the
"filedata" command. This command is useful to have. But, it only
allowed resolving revision data for a single file. This meant that
clients needed to send 1 command for each tracked path they were
seeking data on. Furthermore, those commands would need to enumerate
the exact file nodes they wanted data for.

This approach meant that clients were sending a lot of data to
remotes in order to request file data. e.g. if there were 1M
file revisions, we'd need at least 20,000,000 bytes just to encode
file nodes! Many clients on the internet don't have that kind of
upload capacity.

In order to limit the amount of data that clients must send, we'll
need more efficient ways to request repository data.

This commit defines and implements a new "filesdata" command. This
command allows the retrieval of data for multiple files by specifying
changeset revisions and optional file patterns. The command figures
out what file revisions are "relevant" and sends them in bulk.

The logic around choosing which file revisions to send in the case of
haveparents not being set is overly simple and will over-send files. We
will need more smarts here eventually. (Specifically, the client will
need to tell the server which revisions it knows about.) This work
is deferred until a later time.

Differential Revision: https://phab.mercurial-scm.org/D4981

#require no-chg

  $ . $TESTDIR/wireprotohelpers.sh

  $ hg init server

zstd isn't present in plain builds. Make tests easier by removing
zstd from the equation.

  $ cat >> server/.hg/hgrc << EOF
  > [server]
  > compressionengines = zlib
  > EOF

  $ hg -R server serve -p $HGPORT -d --pid-file hg.pid -E error.log
  $ cat hg.pid > $DAEMON_PIDS

A normal capabilities request is serviced for version 1

  $ sendhttpraw << EOF
  > httprequest GET ?cmd=capabilities
  >     user-agent: test
  > EOF
  using raw connection to peer
  s>     GET /?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     user-agent: test\r\n
  s>     host: $LOCALIP:$HGPORT\r\n (glob)
  s>     \r\n
  s> makefile('rb', None)
  s>     HTTP/1.1 200 Script output follows\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Content-Type: application/mercurial-0.1\r\n
  s>     Content-Length: *\r\n (glob)
  s>     \r\n
  s>     batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash

A proper request without the API server enabled returns the legacy response

  $ sendhttpraw << EOF
  > httprequest GET ?cmd=capabilities
  >    user-agent: test
  >    x-hgupgrade-1: foo
  >    x-hgproto-1: cbor
  > EOF
  using raw connection to peer
  s>     GET /?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     user-agent: test\r\n
  s>     x-hgproto-1: cbor\r\n
  s>     x-hgupgrade-1: foo\r\n
  s>     host: $LOCALIP:$HGPORT\r\n (glob)
  s>     \r\n
  s> makefile('rb', None)
  s>     HTTP/1.1 200 Script output follows\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Content-Type: application/mercurial-0.1\r\n
  s>     Content-Length: *\r\n (glob)
  s>     \r\n
  s>     batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash

Restart with just API server enabled. This enables serving the new format.

  $ killdaemons.py
  $ cat error.log

  $ cat >> server/.hg/hgrc << EOF
  > [experimental]
  > web.apiserver = true
  > EOF

  $ hg -R server serve -p $HGPORT -d --pid-file hg.pid -E error.log
  $ cat hg.pid > $DAEMON_PIDS

X-HgUpgrade-<N> without CBOR advertisement uses legacy response

  $ sendhttpraw << EOF
  > httprequest GET ?cmd=capabilities
  >    user-agent: test
  >    x-hgupgrade-1: foo bar
  > EOF
  using raw connection to peer
  s>     GET /?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     user-agent: test\r\n
  s>     x-hgupgrade-1: foo bar\r\n
  s>     host: $LOCALIP:$HGPORT\r\n (glob)
  s>     \r\n
  s> makefile('rb', None)
  s>     HTTP/1.1 200 Script output follows\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Content-Type: application/mercurial-0.1\r\n
  s>     Content-Length: *\r\n (glob)
  s>     \r\n
  s>     batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash

X-HgUpgrade-<N> without known serialization in X-HgProto-<N> uses legacy response

  $ sendhttpraw << EOF
  > httprequest GET ?cmd=capabilities
  >    user-agent: test
  >    x-hgupgrade-1: foo bar
  >    x-hgproto-1: some value
  > EOF
  using raw connection to peer
  s>     GET /?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     user-agent: test\r\n
  s>     x-hgproto-1: some value\r\n
  s>     x-hgupgrade-1: foo bar\r\n
  s>     host: $LOCALIP:$HGPORT\r\n (glob)
  s>     \r\n
  s> makefile('rb', None)
  s>     HTTP/1.1 200 Script output follows\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Content-Type: application/mercurial-0.1\r\n
  s>     Content-Length: *\r\n (glob)
  s>     \r\n
  s>     batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash

X-HgUpgrade-<N> + X-HgProto-<N> headers trigger new response format

  $ sendhttpraw << EOF
  > httprequest GET ?cmd=capabilities
  >    user-agent: test
  >    x-hgupgrade-1: foo bar
  >    x-hgproto-1: cbor
  > EOF
  using raw connection to peer
  s>     GET /?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     user-agent: test\r\n
  s>     x-hgproto-1: cbor\r\n
  s>     x-hgupgrade-1: foo bar\r\n
  s>     host: $LOCALIP:$HGPORT\r\n (glob)
  s>     \r\n
  s> makefile('rb', None)
  s>     HTTP/1.1 200 OK\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Content-Type: application/mercurial-cbor\r\n
  s>     Content-Length: *\r\n (glob)
  s>     \r\n
  s>     \xa3GapibaseDapi/Dapis\xa0Nv1capabilitiesY\x01\xd3batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash
  cbor> [
    {
      b'apibase': b'api/',
      b'apis': {},
      b'v1capabilities': b'batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash'
    }
  ]

Restart server to enable HTTPv2

  $ killdaemons.py
  $ enablehttpv2 server
  $ hg -R server serve -p $HGPORT -d --pid-file hg.pid -E error.log
  $ cat hg.pid > $DAEMON_PIDS

Only requested API services are returned

  $ sendhttpraw << EOF
  > httprequest GET ?cmd=capabilities
  >    user-agent: test
  >    x-hgupgrade-1: foo bar
  >    x-hgproto-1: cbor
  > EOF
  using raw connection to peer
  s>     GET /?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     user-agent: test\r\n
  s>     x-hgproto-1: cbor\r\n
  s>     x-hgupgrade-1: foo bar\r\n
  s>     host: $LOCALIP:$HGPORT\r\n (glob)
  s>     \r\n
  s> makefile('rb', None)
  s>     HTTP/1.1 200 OK\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Content-Type: application/mercurial-cbor\r\n
  s>     Content-Length: *\r\n (glob)
  s>     \r\n
  s>     \xa3GapibaseDapi/Dapis\xa0Nv1capabilitiesY\x01\xd3batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash
  cbor> [
    {
      b'apibase': b'api/',
      b'apis': {},
      b'v1capabilities': b'batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash'
    }
  ]

Request for HTTPv2 service returns information about it

  $ sendhttpraw << EOF
  > httprequest GET ?cmd=capabilities
  >    user-agent: test
  >    x-hgupgrade-1: exp-http-v2-0003 foo bar
  >    x-hgproto-1: cbor
  > EOF
  using raw connection to peer
  s>     GET /?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     user-agent: test\r\n
  s>     x-hgproto-1: cbor\r\n
  s>     x-hgupgrade-1: exp-http-v2-0003 foo bar\r\n
  s>     host: $LOCALIP:$HGPORT\r\n (glob)
  s>     \r\n
  s> makefile('rb', None)
  s>     HTTP/1.1 200 OK\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Content-Type: application/mercurial-cbor\r\n
  s>     Content-Length: *\r\n (glob)
  s>     \r\n
  s>     \xa3GapibaseDapi/Dapis\xa1Pexp-http-v2-0003\xa4Hcommands\xabIbranchmap\xa2Dargs\xa0Kpermissions\x81DpullLcapabilities\xa2Dargs\xa0Kpermissions\x81DpullMchangesetdata\xa2Dargs\xa2Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x84IbookmarksGparentsEphaseHrevisionIrevisions\xa2Hrequired\xf5DtypeDlistKpermissions\x81DpullHfiledata\xa2Dargs\xa4Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x82GparentsHrevisionKhaveparents\xa3Gdefault\xf4Hrequired\xf4DtypeDboolEnodes\xa2Hrequired\xf5DtypeDlistDpath\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullIfilesdata\xa3Dargs\xa4Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x83NfirstchangesetGparentsHrevisionKhaveparents\xa3Gdefault\xf4Hrequired\xf4DtypeDboolJpathfilter\xa3Gdefault\xf6Hrequired\xf4DtypeDdictIrevisions\xa2Hrequired\xf5DtypeDlistKpermissions\x81DpullTrecommendedbatchsize\x19\xc3PEheads\xa2Dargs\xa1Jpubliconly\xa3Gdefault\xf4Hrequired\xf4DtypeDboolKpermissions\x81DpullEknown\xa2Dargs\xa1Enodes\xa3Gdefault\x80Hrequired\xf4DtypeDlistKpermissions\x81DpullHlistkeys\xa2Dargs\xa1Inamespace\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullFlookup\xa2Dargs\xa1Ckey\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullLmanifestdata\xa3Dargs\xa4Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x82GparentsHrevisionKhaveparents\xa3Gdefault\xf4Hrequired\xf4DtypeDboolEnodes\xa2Hrequired\xf5DtypeDlistDtree\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullTrecommendedbatchsize\x1a\x00\x01\x86\xa0Gpushkey\xa2Dargs\xa4Ckey\xa2Hrequired\xf5DtypeEbytesInamespace\xa2Hrequired\xf5DtypeEbytesCnew\xa2Hrequired\xf5DtypeEbytesCold\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpushQframingmediatypes\x81X&application/mercurial-exp-framing-0006Rpathfilterprefixes\xd9\x01\x02\x82Epath:Lrootfilesin:Nrawrepoformats\x82LgeneraldeltaHrevlogv1Nv1capabilitiesY\x01\xd3batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash
  cbor> [
    {
      b'apibase': b'api/',
      b'apis': {
        b'exp-http-v2-0003': {
          b'commands': {
            b'branchmap': {
              b'args': {},
              b'permissions': [
                b'pull'
              ]
            },
            b'capabilities': {
              b'args': {},
              b'permissions': [
                b'pull'
              ]
            },
            b'changesetdata': {
              b'args': {
                b'fields': {
                  b'default': set([]),
                  b'required': False,
                  b'type': b'set',
                  b'validvalues': set([
                    b'bookmarks',
                    b'parents',
                    b'phase',
                    b'revision'
                  ])
                },
                b'revisions': {
                  b'required': True,
                  b'type': b'list'
                }
              },
              b'permissions': [
                b'pull'
              ]
            },
            b'filedata': {
              b'args': {
                b'fields': {
                  b'default': set([]),
                  b'required': False,
                  b'type': b'set',
                  b'validvalues': set([
                    b'parents',
                    b'revision'
                  ])
                },
                b'haveparents': {
                  b'default': False,
                  b'required': False,
                  b'type': b'bool'
                },
                b'nodes': {
                  b'required': True,
                  b'type': b'list'
                },
                b'path': {
                  b'required': True,
                  b'type': b'bytes'
                }
              },
              b'permissions': [
                b'pull'
              ]
            },
            b'filesdata': {
              b'args': {
                b'fields': {
                  b'default': set([]),
                  b'required': False,
                  b'type': b'set',
                  b'validvalues': set([
                    b'firstchangeset',
                    b'parents',
                    b'revision'
                  ])
                },
                b'haveparents': {
                  b'default': False,
                  b'required': False,
                  b'type': b'bool'
                },
                b'pathfilter': {
                  b'default': None,
                  b'required': False,
                  b'type': b'dict'
                },
                b'revisions': {
                  b'required': True,
                  b'type': b'list'
                }
              },
              b'permissions': [
                b'pull'
              ],
              b'recommendedbatchsize': 50000
            },
            b'heads': {
              b'args': {
                b'publiconly': {
                  b'default': False,
                  b'required': False,
                  b'type': b'bool'
                }
              },
              b'permissions': [
                b'pull'
              ]
            },
            b'known': {
              b'args': {
                b'nodes': {
                  b'default': [],
                  b'required': False,
                  b'type': b'list'
                }
              },
              b'permissions': [
                b'pull'
              ]
            },
            b'listkeys': {
              b'args': {
                b'namespace': {
                  b'required': True,
                  b'type': b'bytes'
                }
              },
              b'permissions': [
                b'pull'
              ]
            },
            b'lookup': {
              b'args': {
                b'key': {
                  b'required': True,
                  b'type': b'bytes'
                }
              },
              b'permissions': [
                b'pull'
              ]
            },
            b'manifestdata': {
              b'args': {
                b'fields': {
                  b'default': set([]),
                  b'required': False,
                  b'type': b'set',
                  b'validvalues': set([
                    b'parents',
                    b'revision'
                  ])
                },
                b'haveparents': {
                  b'default': False,
                  b'required': False,
                  b'type': b'bool'
                },
                b'nodes': {
                  b'required': True,
                  b'type': b'list'
                },
                b'tree': {
                  b'required': True,
                  b'type': b'bytes'
                }
              },
              b'permissions': [
                b'pull'
              ],
              b'recommendedbatchsize': 100000
            },
            b'pushkey': {
              b'args': {
                b'key': {
                  b'required': True,
                  b'type': b'bytes'
                },
                b'namespace': {
                  b'required': True,
                  b'type': b'bytes'
                },
                b'new': {
                  b'required': True,
                  b'type': b'bytes'
                },
                b'old': {
                  b'required': True,
                  b'type': b'bytes'
                }
              },
              b'permissions': [
                b'push'
              ]
            }
          },
          b'framingmediatypes': [
            b'application/mercurial-exp-framing-0006'
          ],
          b'pathfilterprefixes': set([
            b'path:',
            b'rootfilesin:'
          ]),
          b'rawrepoformats': [
            b'generaldelta',
            b'revlogv1'
          ]
        }
      },
      b'v1capabilities': b'batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash'
    }
  ]

capabilities command returns expected info

  $ sendhttpv2peerhandshake << EOF
  > command capabilities
  > EOF
  creating http peer for wire protocol version 2
  s>     GET /?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     vary: X-HgProto-1,X-HgUpgrade-1\r\n
  s>     x-hgproto-1: cbor\r\n
  s>     x-hgupgrade-1: exp-http-v2-0003\r\n
  s>     accept: application/mercurial-0.1\r\n
  s>     host: $LOCALIP:$HGPORT\r\n (glob)
  s>     user-agent: Mercurial debugwireproto\r\n
  s>     \r\n
  s> makefile('rb', None)
  s>     HTTP/1.1 200 OK\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Content-Type: application/mercurial-cbor\r\n
  s>     Content-Length: *\r\n (glob)
  s>     \r\n
  s>     \xa3GapibaseDapi/Dapis\xa1Pexp-http-v2-0003\xa4Hcommands\xabIbranchmap\xa2Dargs\xa0Kpermissions\x81DpullLcapabilities\xa2Dargs\xa0Kpermissions\x81DpullMchangesetdata\xa2Dargs\xa2Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x84IbookmarksGparentsEphaseHrevisionIrevisions\xa2Hrequired\xf5DtypeDlistKpermissions\x81DpullHfiledata\xa2Dargs\xa4Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x82GparentsHrevisionKhaveparents\xa3Gdefault\xf4Hrequired\xf4DtypeDboolEnodes\xa2Hrequired\xf5DtypeDlistDpath\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullIfilesdata\xa3Dargs\xa4Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x83NfirstchangesetGparentsHrevisionKhaveparents\xa3Gdefault\xf4Hrequired\xf4DtypeDboolJpathfilter\xa3Gdefault\xf6Hrequired\xf4DtypeDdictIrevisions\xa2Hrequired\xf5DtypeDlistKpermissions\x81DpullTrecommendedbatchsize\x19\xc3PEheads\xa2Dargs\xa1Jpubliconly\xa3Gdefault\xf4Hrequired\xf4DtypeDboolKpermissions\x81DpullEknown\xa2Dargs\xa1Enodes\xa3Gdefault\x80Hrequired\xf4DtypeDlistKpermissions\x81DpullHlistkeys\xa2Dargs\xa1Inamespace\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullFlookup\xa2Dargs\xa1Ckey\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullLmanifestdata\xa3Dargs\xa4Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x82GparentsHrevisionKhaveparents\xa3Gdefault\xf4Hrequired\xf4DtypeDboolEnodes\xa2Hrequired\xf5DtypeDlistDtree\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullTrecommendedbatchsize\x1a\x00\x01\x86\xa0Gpushkey\xa2Dargs\xa4Ckey\xa2Hrequired\xf5DtypeEbytesInamespace\xa2Hrequired\xf5DtypeEbytesCnew\xa2Hrequired\xf5DtypeEbytesCold\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpushQframingmediatypes\x81X&application/mercurial-exp-framing-0006Rpathfilterprefixes\xd9\x01\x02\x82Epath:Lrootfilesin:Nrawrepoformats\x82LgeneraldeltaHrevlogv1Nv1capabilitiesY\x01\xd3batch branchmap $USUAL_BUNDLE2_CAPS$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash
  sending capabilities command
  s>     POST /api/exp-http-v2-0003/ro/capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     accept: application/mercurial-exp-framing-0006\r\n
  s>     content-type: application/mercurial-exp-framing-0006\r\n
  s>     content-length: 63\r\n
  s>     host: $LOCALIP:$HGPORT\r\n (glob)
  s>     user-agent: Mercurial debugwireproto\r\n
  s>     \r\n
  s>     \x1c\x00\x00\x01\x00\x01\x01\x82\xa1Pcontentencodings\x81Hidentity\x13\x00\x00\x01\x00\x01\x00\x11\xa1DnameLcapabilities
  s> makefile('rb', None)
  s>     HTTP/1.1 200 OK\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Content-Type: application/mercurial-exp-framing-0006\r\n
  s>     Transfer-Encoding: chunked\r\n
  s>     \r\n
  s>     11\r\n
  s>     \t\x00\x00\x01\x00\x02\x01\x92
  s>     Hidentity
  s>     \r\n
  received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos)
  s>     13\r\n
  s>     \x0b\x00\x00\x01\x00\x02\x041
  s>     \xa1FstatusBok
  s>     \r\n
  received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation)
  s>     5d1\r\n
  s>     \xc9\x05\x00\x01\x00\x02\x041
  s>     \xa4Hcommands\xabIbranchmap\xa2Dargs\xa0Kpermissions\x81DpullLcapabilities\xa2Dargs\xa0Kpermissions\x81DpullMchangesetdata\xa2Dargs\xa2Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x84IbookmarksGparentsEphaseHrevisionIrevisions\xa2Hrequired\xf5DtypeDlistKpermissions\x81DpullHfiledata\xa2Dargs\xa4Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x82GparentsHrevisionKhaveparents\xa3Gdefault\xf4Hrequired\xf4DtypeDboolEnodes\xa2Hrequired\xf5DtypeDlistDpath\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullIfilesdata\xa3Dargs\xa4Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x83NfirstchangesetGparentsHrevisionKhaveparents\xa3Gdefault\xf4Hrequired\xf4DtypeDboolJpathfilter\xa3Gdefault\xf6Hrequired\xf4DtypeDdictIrevisions\xa2Hrequired\xf5DtypeDlistKpermissions\x81DpullTrecommendedbatchsize\x19\xc3PEheads\xa2Dargs\xa1Jpubliconly\xa3Gdefault\xf4Hrequired\xf4DtypeDboolKpermissions\x81DpullEknown\xa2Dargs\xa1Enodes\xa3Gdefault\x80Hrequired\xf4DtypeDlistKpermissions\x81DpullHlistkeys\xa2Dargs\xa1Inamespace\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullFlookup\xa2Dargs\xa1Ckey\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullLmanifestdata\xa3Dargs\xa4Ffields\xa4Gdefault\xd9\x01\x02\x80Hrequired\xf4DtypeCsetKvalidvalues\xd9\x01\x02\x82GparentsHrevisionKhaveparents\xa3Gdefault\xf4Hrequired\xf4DtypeDboolEnodes\xa2Hrequired\xf5DtypeDlistDtree\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpullTrecommendedbatchsize\x1a\x00\x01\x86\xa0Gpushkey\xa2Dargs\xa4Ckey\xa2Hrequired\xf5DtypeEbytesInamespace\xa2Hrequired\xf5DtypeEbytesCnew\xa2Hrequired\xf5DtypeEbytesCold\xa2Hrequired\xf5DtypeEbytesKpermissions\x81DpushQframingmediatypes\x81X&application/mercurial-exp-framing-0006Rpathfilterprefixes\xd9\x01\x02\x82Epath:Lrootfilesin:Nrawrepoformats\x82LgeneraldeltaHrevlogv1
  s>     \r\n
  received frame(size=1481; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation)
  s>     8\r\n
  s>     \x00\x00\x00\x01\x00\x02\x002
  s>     \r\n
  s>     0\r\n
  s>     \r\n
  received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos)
  response: gen[
    {
      b'commands': {
        b'branchmap': {
          b'args': {},
          b'permissions': [
            b'pull'
          ]
        },
        b'capabilities': {
          b'args': {},
          b'permissions': [
            b'pull'
          ]
        },
        b'changesetdata': {
          b'args': {
            b'fields': {
              b'default': set([]),
              b'required': False,
              b'type': b'set',
              b'validvalues': set([
                b'bookmarks',
                b'parents',
                b'phase',
                b'revision'
              ])
            },
            b'revisions': {
              b'required': True,
              b'type': b'list'
            }
          },
          b'permissions': [
            b'pull'
          ]
        },
        b'filedata': {
          b'args': {
            b'fields': {
              b'default': set([]),
              b'required': False,
              b'type': b'set',
              b'validvalues': set([
                b'parents',
                b'revision'
              ])
            },
            b'haveparents': {
              b'default': False,
              b'required': False,
              b'type': b'bool'
            },
            b'nodes': {
              b'required': True,
              b'type': b'list'
            },
            b'path': {
              b'required': True,
              b'type': b'bytes'
            }
          },
          b'permissions': [
            b'pull'
          ]
        },
        b'filesdata': {
          b'args': {
            b'fields': {
              b'default': set([]),
              b'required': False,
              b'type': b'set',
              b'validvalues': set([
                b'firstchangeset',
                b'parents',
                b'revision'
              ])
            },
            b'haveparents': {
              b'default': False,
              b'required': False,
              b'type': b'bool'
            },
            b'pathfilter': {
              b'default': None,
              b'required': False,
              b'type': b'dict'
            },
            b'revisions': {
              b'required': True,
              b'type': b'list'
            }
          },
          b'permissions': [
            b'pull'
          ],
          b'recommendedbatchsize': 50000
        },
        b'heads': {
          b'args': {
            b'publiconly': {
              b'default': False,
              b'required': False,
              b'type': b'bool'
            }
          },
          b'permissions': [
            b'pull'
          ]
        },
        b'known': {
          b'args': {
            b'nodes': {
              b'default': [],
              b'required': False,
              b'type': b'list'
            }
          },
          b'permissions': [
            b'pull'
          ]
        },
        b'listkeys': {
          b'args': {
            b'namespace': {
              b'required': True,
              b'type': b'bytes'
            }
          },
          b'permissions': [
            b'pull'
          ]
        },
        b'lookup': {
          b'args': {
            b'key': {
              b'required': True,
              b'type': b'bytes'
            }
          },
          b'permissions': [
            b'pull'
          ]
        },
        b'manifestdata': {
          b'args': {
            b'fields': {
              b'default': set([]),
              b'required': False,
              b'type': b'set',
              b'validvalues': set([
                b'parents',
                b'revision'
              ])
            },
            b'haveparents': {
              b'default': False,
              b'required': False,
              b'type': b'bool'
            },
            b'nodes': {
              b'required': True,
              b'type': b'list'
            },
            b'tree': {
              b'required': True,
              b'type': b'bytes'
            }
          },
          b'permissions': [
            b'pull'
          ],
          b'recommendedbatchsize': 100000
        },
        b'pushkey': {
          b'args': {
            b'key': {
              b'required': True,
              b'type': b'bytes'
            },
            b'namespace': {
              b'required': True,
              b'type': b'bytes'
            },
            b'new': {
              b'required': True,
              b'type': b'bytes'
            },
            b'old': {
              b'required': True,
              b'type': b'bytes'
            }
          },
          b'permissions': [
            b'push'
          ]
        }
      },
      b'framingmediatypes': [
        b'application/mercurial-exp-framing-0006'
      ],
      b'pathfilterprefixes': set([
        b'path:',
        b'rootfilesin:'
      ]),
      b'rawrepoformats': [
        b'generaldelta',
        b'revlogv1'
      ]
    }
  ]
  (sent 2 HTTP requests and * bytes; received * bytes in responses) (glob)

  $ cat error.log