tests/test-http-protocol.t

transaction: quietly rollback if no other changes than temporary files

If no actual change have been made, we don't really need to roll them back. We
only have to cleanup some temporary files and it seems reasonable to do that
quietly.

This will help us to use the transaction in wider context¹ without impacting the
user experience.

[1] as in Python context managers that lives longer.

#require no-chg

persistent-nodemap is not enabled by default. It is not relevant for this test
so disable it.

  $ . $TESTDIR/wireprotohelpers.sh

  $ cat >> $HGRCPATH << EOF
  > [format]
  > use-persistent-nodemap = no
  > [web]
  > push_ssl = false
  > allow_push = *
  > EOF

  $ hg init server
  $ cd server
  $ touch a
  $ hg -q commit -A -m initial
  $ cd ..

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

compression formats are advertised in compression capability

#if zstd
  $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=capabilities' | tr ' ' '\n' | grep '^compression=zstd,zlib$' > /dev/null
#else
  $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=capabilities' | tr ' ' '\n' | grep '^compression=zlib$' > /dev/null
#endif

  $ killdaemons.py

server.compressionengines can replace engines list wholesale

  $ hg serve --config server.compressionengines=none -R server -p $HGPORT -d --pid-file hg.pid
  $ cat hg.pid > $DAEMON_PIDS
  $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=capabilities' | tr ' ' '\n' | grep '^compression=none$' > /dev/null

  $ killdaemons.py

Order of engines can also change

  $ hg serve --config server.compressionengines=none,zlib -R server -p $HGPORT -d --pid-file hg.pid
  $ cat hg.pid > $DAEMON_PIDS
  $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=capabilities' | tr ' ' '\n' | grep '^compression=none,zlib$' > /dev/null

  $ killdaemons.py

Start a default server again

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

Server should send application/mercurial-0.1 to clients if no Accept is used

  $ get-with-headers.py --headeronly $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000' -
  200 Script output follows
  content-type: application/mercurial-0.1
  date: $HTTP_DATE$
  server: testing stub value
  transfer-encoding: chunked

Server should send application/mercurial-0.1 when client says it wants it

  $ get-with-headers.py --hgproto '0.1' --headeronly $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000' -
  200 Script output follows
  content-type: application/mercurial-0.1
  date: $HTTP_DATE$
  server: testing stub value
  transfer-encoding: chunked

Server should send application/mercurial-0.2 when client says it wants it

  $ get-with-headers.py --hgproto '0.2' --headeronly $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000' -
  200 Script output follows
  content-type: application/mercurial-0.2
  date: $HTTP_DATE$
  server: testing stub value
  transfer-encoding: chunked

  $ get-with-headers.py --hgproto '0.1 0.2' --headeronly $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000' -
  200 Script output follows
  content-type: application/mercurial-0.2
  date: $HTTP_DATE$
  server: testing stub value
  transfer-encoding: chunked

Requesting a compression format that server doesn't support results will fall back to 0.1

  $ get-with-headers.py --hgproto '0.2 comp=aa' --headeronly $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000' -
  200 Script output follows
  content-type: application/mercurial-0.1
  date: $HTTP_DATE$
  server: testing stub value
  transfer-encoding: chunked

#if zstd
zstd is used if available

  $ get-with-headers.py --hgproto '0.2 comp=zstd' $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000' > resp
  $ f --size --hexdump --bytes 36 --sha1 resp
  resp: size=248, sha1=f11b5c098c638068b3d5fe2f9e6241bf5228
  0000: 32 30 30 20 53 63 72 69 70 74 20 6f 75 74 70 75 |200 Script outpu|
  0010: 74 20 66 6f 6c 6c 6f 77 73 0a 0a 04 7a 73 74 64 |t follows...zstd|
  0020: 28 b5 2f fd                                     |(./.|

#endif

application/mercurial-0.2 is not yet used on non-streaming responses

  $ get-with-headers.py --hgproto '0.2' $LOCALIP:$HGPORT '?cmd=heads' -
  200 Script output follows
  content-length: 41
  content-type: application/mercurial-0.1
  date: $HTTP_DATE$
  server: testing stub value
  
  e93700bd72895c5addab234c56d4024b487a362f

Now test protocol preference usage

  $ killdaemons.py
  $ hg serve --config server.compressionengines=none,zlib -R server -p $HGPORT -d --pid-file hg.pid
  $ cat hg.pid > $DAEMON_PIDS

No Accept will send 0.1+zlib, even though "none" is preferred b/c "none" isn't supported on 0.1

  $ get-with-headers.py --headeronly $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000' Content-Type
  200 Script output follows
  content-type: application/mercurial-0.1

  $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000'  > resp
  $ f --size --hexdump --bytes 28 --sha1 resp
  resp: size=227, sha1=35a4c074da74f32f5440da3cbf04
  0000: 32 30 30 20 53 63 72 69 70 74 20 6f 75 74 70 75 |200 Script outpu|
  0010: 74 20 66 6f 6c 6c 6f 77 73 0a 0a 78             |t follows..x|

Explicit 0.1 will send zlib because "none" isn't supported on 0.1

  $ get-with-headers.py --hgproto '0.1' $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000'  > resp
  $ f --size --hexdump --bytes 28 --sha1 resp
  resp: size=227, sha1=35a4c074da74f32f5440da3cbf04
  0000: 32 30 30 20 53 63 72 69 70 74 20 6f 75 74 70 75 |200 Script outpu|
  0010: 74 20 66 6f 6c 6c 6f 77 73 0a 0a 78             |t follows..x|

0.2 with no compression will get "none" because that is server's preference
(spec says ZL and UN are implicitly supported)

  $ get-with-headers.py --hgproto '0.2' $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000'  > resp
  $ f --size --hexdump --bytes 32 --sha1 resp
  resp: size=432, sha1=ac931b412ec185a02e0e5bcff98dac83
  0000: 32 30 30 20 53 63 72 69 70 74 20 6f 75 74 70 75 |200 Script outpu|
  0010: 74 20 66 6f 6c 6c 6f 77 73 0a 0a 04 6e 6f 6e 65 |t follows...none|

Client receives server preference even if local order doesn't match

  $ get-with-headers.py --hgproto '0.2 comp=zlib,none' $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000'  > resp
  $ f --size --hexdump --bytes 32 --sha1 resp
  resp: size=432, sha1=ac931b412ec185a02e0e5bcff98dac83
  0000: 32 30 30 20 53 63 72 69 70 74 20 6f 75 74 70 75 |200 Script outpu|
  0010: 74 20 66 6f 6c 6c 6f 77 73 0a 0a 04 6e 6f 6e 65 |t follows...none|

Client receives only supported format even if not server preferred format

  $ get-with-headers.py --hgproto '0.2 comp=zlib' $LOCALIP:$HGPORT '?cmd=getbundle&heads=e93700bd72895c5addab234c56d4024b487a362f&common=0000000000000000000000000000000000000000'  > resp
  $ f --size --hexdump --bytes 33 --sha1 resp
  resp: size=232, sha1=a1c727f0c9693ca15742a75c30419bc36
  0000: 32 30 30 20 53 63 72 69 70 74 20 6f 75 74 70 75 |200 Script outpu|
  0010: 74 20 66 6f 6c 6c 6f 77 73 0a 0a 04 7a 6c 69 62 |t follows...zlib|
  0020: 78                                              |x|

  $ killdaemons.py
  $ cd ..

Test listkeys for listing namespaces

  $ hg init empty
  $ hg -R empty serve -p $HGPORT -d --pid-file hg.pid
  $ cat hg.pid > $DAEMON_PIDS

  $ hg --verbose debugwireproto http://$LOCALIP:$HGPORT << EOF
  > command listkeys
  >     namespace namespaces
  > EOF
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\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 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=[^ ,]+(,[^ ,]+)* unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash (re)
  sending listkeys command
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /?cmd=listkeys HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     vary: X-HgArg-1,X-HgProto-1\r\n
  s>     x-hgarg-1: namespace=namespaces\r\n
  s>     x-hgproto-1: 0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull\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 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: 30\r\n
  s>     \r\n
  s>     bookmarks\t\n
  s>     namespaces\t\n
  s>     phases\t
  response: {
    b'bookmarks': b'',
    b'namespaces': b'',
    b'phases': b''
  }
  (sent 2 HTTP requests and * bytes; received * bytes in responses) (glob)

Same thing, but with "httprequest" command

  $ hg --verbose debugwireproto --peer raw http://$LOCALIP:$HGPORT << EOF
  > httprequest GET ?cmd=listkeys
  >     user-agent: test
  >     x-hgarg-1: namespace=namespaces
  > EOF
  using raw connection to peer
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /?cmd=listkeys HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     user-agent: test\r\n
  s>     x-hgarg-1: namespace=namespaces\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: 30\r\n
  s>     \r\n
  s>     bookmarks\t\n
  s>     namespaces\t\n
  s>     phases\t
  $ killdaemons.py

HTTP client follows HTTP redirect on handshake to new repo

  $ cd $TESTTMP

  $ hg init redirector
  $ hg init redirected
  $ cd redirected
  $ touch foo
  $ hg -q commit -A -m initial
  $ cd ..

  $ cat > paths.conf << EOF
  > [paths]
  > / = $TESTTMP/*
  > EOF

  $ cat > redirectext.py << EOF
  > from mercurial import extensions, wireprotoserver
  > def wrappedcallhttp(orig, repo, req, res, proto, cmd):
  >     path = req.advertisedurl[len(req.advertisedbaseurl):]
  >     if not path.startswith(b'/redirector'):
  >         return orig(repo, req, res, proto, cmd)
  >     relpath = path[len(b'/redirector'):]
  >     res.status = b'301 Redirect'
  >     newurl = b'%s/redirected%s' % (req.baseurl, relpath)
  >     if not repo.ui.configbool(b'testing', b'redirectqs', True) and b'?' in newurl:
  >         newurl = newurl[0:newurl.index(b'?')]
  >     res.headers[b'Location'] = newurl
  >     res.headers[b'Content-Type'] = b'text/plain'
  >     res.setbodybytes(b'redirected')
  >     return True
  > 
  > extensions.wrapfunction(wireprotoserver, '_callhttp', wrappedcallhttp)
  > EOF

  $ hg --config extensions.redirect=$TESTTMP/redirectext.py \
  >    --config server.compressionengines=zlib \
  >     serve --web-conf paths.conf --pid-file hg.pid -p $HGPORT -d
  $ cat hg.pid > $DAEMON_PIDS

Verify our HTTP 301 is served properly

  $ hg --verbose debugwireproto --peer raw http://$LOCALIP:$HGPORT << EOF
  > httprequest GET /redirector?cmd=capabilities
  >     user-agent: test
  > EOF
  using raw connection to peer
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /redirector?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/1.1 301 Redirect\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Location: http://$LOCALIP:$HGPORT/redirected?cmd=capabilities\r\n (glob)
  s>     Content-Type: text/plain\r\n
  s>     Content-Length: 10\r\n
  s>     \r\n
  s>     redirected
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /redirected?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: \d+\\r\\n (re)
  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=[^ ,]+(,[^ ,]+)* unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash (re)

Test with the HTTP peer

  $ hg --verbose debugwireproto http://$LOCALIP:$HGPORT/redirector << EOF
  > command heads
  > EOF
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /redirector?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\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/1.1 301 Redirect\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Location: http://$LOCALIP:$HGPORT/redirected?cmd=capabilities\r\n (glob)
  s>     Content-Type: text/plain\r\n
  s>     Content-Length: 10\r\n
  s>     \r\n
  s>     redirected
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /redirected?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\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 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: \d+\\r\\n (re)
  s>     \r\n
  real URL is http://$LOCALIP:$HGPORT/redirected (glob)
  s>     batch branchmap \$USUAL_BUNDLE2_CAPS\$ changegroupsubset compression=\$BUNDLE2_COMPRESSIONS\$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=[^ ,]+(,[^ ,]+)* unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash (re)
  sending heads command
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /redirected?cmd=heads HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     vary: X-HgProto-1\r\n
  s>     x-hgproto-1: 0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull\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 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: 41\r\n
  s>     \r\n
  s>     96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n
  response: [
    b'\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL'
  ]
  (sent 3 HTTP requests and * bytes; received * bytes in responses) (glob)

  $ killdaemons.py

Now test a variation where we strip the query string from the redirect URL.
(SCM Manager apparently did this and clients would recover from it)

  $ hg --config extensions.redirect=$TESTTMP/redirectext.py \
  >    --config server.compressionengines=zlib \
  >    --config testing.redirectqs=false \
  >     serve --web-conf paths.conf --pid-file hg.pid -p $HGPORT -d
  $ cat hg.pid > $DAEMON_PIDS

  $ hg --verbose debugwireproto --peer raw http://$LOCALIP:$HGPORT << EOF
  > httprequest GET /redirector?cmd=capabilities
  >     user-agent: test
  > EOF
  using raw connection to peer
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /redirector?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/1.1 301 Redirect\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Location: http://$LOCALIP:$HGPORT/redirected\r\n (glob)
  s>     Content-Type: text/plain\r\n
  s>     Content-Length: 10\r\n
  s>     \r\n
  s>     redirected
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /redirected 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>     ETag: W/"*"\r\n (glob)
  s>     Content-Type: text/html; charset=ascii\r\n
  s>     Transfer-Encoding: chunked\r\n
  s>     \r\n
  s>     414\r\n
  s>     <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">\n
  s>     <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">\n
  s>     <head>\n
  s>     <link rel="icon" href="/redirected/static/hgicon.png" type="image/png" />\n
  s>     <meta name="robots" content="index, nofollow" />\n
  s>     <link rel="stylesheet" href="/redirected/static/style-paper.css" type="text/css" />\n
  s>     <script type="text/javascript" src="/redirected/static/mercurial.js"></script>\n
  s>     \n
  s>     <title>redirected: log</title>\n
  s>     <link rel="alternate" type="application/atom+xml"\n
  s>        href="/redirected/atom-log" title="Atom feed for redirected" />\n
  s>     <link rel="alternate" type="application/rss+xml"\n
  s>        href="/redirected/rss-log" title="RSS feed for redirected" />\n
  s>     </head>\n
  s>     <body>\n
  s>     \n
  s>     <div class="container">\n
  s>     <div class="menu">\n
  s>     <div class="logo">\n
  s>     <a href="https://mercurial-scm.org/">\n
  s>     <img src="/redirected/static/hglogo.png" alt="mercurial" /></a>\n
  s>     </div>\n
  s>     <ul>\n
  s>     <li class="active">log</li>\n
  s>     <li><a href="/redirected/graph/tip">graph</a></li>\n
  s>     <li><a href="/redirected/tags">tags</a></li>\n
  s>     <li><a href="
  s>     \r\n
  s>     810\r\n
  s>     /redirected/bookmarks">bookmarks</a></li>\n
  s>     <li><a href="/redirected/branches">branches</a></li>\n
  s>     </ul>\n
  s>     <ul>\n
  s>     <li><a href="/redirected/rev/tip">changeset</a></li>\n
  s>     <li><a href="/redirected/file/tip">browse</a></li>\n
  s>     </ul>\n
  s>     <ul>\n
  s>     \n
  s>     </ul>\n
  s>     <ul>\n
  s>      <li><a href="/redirected/help">help</a></li>\n
  s>     </ul>\n
  s>     <div class="atom-logo">\n
  s>     <a href="/redirected/atom-log" title="subscribe to atom feed">\n
  s>     <img class="atom-logo" src="/redirected/static/feed-icon-14x14.png" alt="atom feed" />\n
  s>     </a>\n
  s>     </div>\n
  s>     </div>\n
  s>     \n
  s>     <div class="main">\n
  s>     <h2 class="breadcrumb"><a href="/">Mercurial</a> &gt; <a href="/redirected">redirected</a> </h2>\n
  s>     <h3>log</h3>\n
  s>     \n
  s>     \n
  s>     <form class="search" action="/redirected/log">\n
  s>     \n
  s>     <p><input name="rev" id="search1" type="text" size="30" value="" /></p>\n
  s>     <div id="hint">Find changesets by keywords (author, files, the commit message), revision\n
  s>     number or hash, or <a href="/redirected/help/revsets">revset expression</a>.</div>\n
  s>     </form>\n
  s>     \n
  s>     <div class="navigate">\n
  s>     <a href="/redirected/shortlog/tip?revcount=30">less</a>\n
  s>     <a href="/redirected/shortlog/tip?revcount=120">more</a>\n
  s>     | rev 0: <a href="/redirected/shortlog/96ee1d7354c4">(0)</a> <a href="/redirected/shortlog/tip">tip</a> \n
  s>     </div>\n
  s>     \n
  s>     <table class="bigtable">\n
  s>     <thead>\n
  s>      <tr>\n
  s>       <th class="age">age</th>\n
  s>       <th class="author">author</th>\n
  s>       <th class="description">description</th>\n
  s>      </tr>\n
  s>     </thead>\n
  s>     <tbody class="stripes2">\n
  s>      <tr>\n
  s>       <td class="age">Thu, 01 Jan 1970 00:00:00 +0000</td>\n
  s>       <td class="author">test</td>\n
  s>       <td class="description">\n
  s>        <a href="/redirected/rev/96ee1d7354c4">initial</a>\n
  s>        <span class="phase">draft</span> <span class="branchhead">default</span> <span class="tag">tip</span> \n
  s>       </td>\n
  s>      </tr>\n
  s>     \n
  s>     </tbody>\n
  s>     </table>\n
  s>     \n
  s>     <div class="navigate">\n
  s>     <a href="/redirected/shortlog/tip?revcount=30">less</a>\n
  s>     <a href="/redirected/shortlog/tip?revcount=120">more</a>\n
  s>     | rev 0: <a href="/redirected/shortlog/96ee1d7354c4">(0)</a> <a href="/redirected/shortlog/tip">tip</a> \n
  s>     </div>\n
  s>     \n
  s>     <script type="text/javascript">\n
  s>         ajaxScrollInit(\n
  s>                 \'/redirected/shortlog/%next%\',\n
  s>                 \'\', <!-- NEXTHASH\n
  s>                 function (htmlText) {
  s>     \r\n
  s>     14a\r\n
  s>     \n
  s>                     var m = htmlText.match(/\'(\\w+)\', <!-- NEXTHASH/);\n
  s>                     return m ? m[1] : null;\n
  s>                 },\n
  s>                 \'.bigtable > tbody\',\n
  s>                 \'<tr class="%class%">\\\n
  s>                 <td colspan="3" style="text-align: center;">%text%</td>\\\n
  s>                 </tr>\'\n
  s>         );\n
  s>     </script>\n
  s>     \n
  s>     </div>\n
  s>     </div>\n
  s>     \n
  s>     \n
  s>     \n
  s>     </body>\n
  s>     </html>\n
  s>     \n
  s>     \r\n
  s>     0\r\n
  s>     \r\n

  $ hg --verbose debugwireproto http://$LOCALIP:$HGPORT/redirector << EOF
  > command heads
  > EOF
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /redirector?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\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/1.1 301 Redirect\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     Location: http://$LOCALIP:$HGPORT/redirected\r\n (glob)
  s>     Content-Type: text/plain\r\n
  s>     Content-Length: 10\r\n
  s>     \r\n
  s>     redirected
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /redirected HTTP/1.1\r\n
  s>     Accept-Encoding: identity\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 Script output follows\r\n
  s>     Server: testing stub value\r\n
  s>     Date: $HTTP_DATE$\r\n
  s>     ETag: W/"*"\r\n (glob)
  s>     Content-Type: text/html; charset=ascii\r\n
  s>     Transfer-Encoding: chunked\r\n
  s>     \r\n
  real URL is http://$LOCALIP:$HGPORT/redirected (glob)
  s>     414\r\n
  s>     <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">\n
  s>     <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">\n
  s>     <head>\n
  s>     <link rel="icon" href="/redirected/static/hgicon.png" type="image/png" />\n
  s>     <meta name="robots" content="index, nofollow" />\n
  s>     <link rel="stylesheet" href="/redirected/static/style-paper.css" type="text/css" />\n
  s>     <script type="text/javascript" src="/redirected/static/mercurial.js"></script>\n
  s>     \n
  s>     <title>redirected: log</title>\n
  s>     <link rel="alternate" type="application/atom+xml"\n
  s>        href="/redirected/atom-log" title="Atom feed for redirected" />\n
  s>     <link rel="alternate" type="application/rss+xml"\n
  s>        href="/redirected/rss-log" title="RSS feed for redirected" />\n
  s>     </head>\n
  s>     <body>\n
  s>     \n
  s>     <div class="container">\n
  s>     <div class="menu">\n
  s>     <div class="logo">\n
  s>     <a href="https://mercurial-scm.org/">\n
  s>     <img src="/redirected/static/hglogo.png" alt="mercurial" /></a>\n
  s>     </div>\n
  s>     <ul>\n
  s>     <li class="active">log</li>\n
  s>     <li><a href="/redirected/graph/tip">graph</a></li>\n
  s>     <li><a href="/redirected/tags">tags</a
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /redirected?cmd=capabilities HTTP/1.1\r\n
  s>     Accept-Encoding: identity\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 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: \d+\\r\\n (re)
  s>     \r\n
  real URL is http://$LOCALIP:$HGPORT/redirected (glob)
  s>     batch branchmap \$USUAL_BUNDLE2_CAPS\$ changegroupsubset compression=\$BUNDLE2_COMPRESSIONS\$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey streamreqs=[^ ,]+(,[^ ,]+)* unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash (re)
  sending heads command
  s> setsockopt(6, 1, 1) -> None (?)
  s>     GET /redirected?cmd=heads HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     vary: X-HgProto-1\r\n
  s>     x-hgproto-1: 0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull\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 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: 41\r\n
  s>     \r\n
  s>     96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n
  response: [
    b'\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL'
  ]
  (sent 4 HTTP requests and * bytes; received * bytes in responses) (glob)