tests/test-wireproto-command-pushkey.t

wireprotov2: define response data as CBOR

Previously, response data was defined as a stream of bytes. We had
the option to declare it as CBOR using a frame flag.

We've converged all wire protocol commands exposed on version 2 to
CBOR. I think consistency is important. The overhead to encoding
things with CBOR is minimal. Even a very large bytestring can be
efficiently encoded using an indefinite length bytestring. Now,
there are limitations with consumers not being able to efficiently
stream large CBOR values. But these feel like solvable problems.

This commit removes the "is CBOR" frame flag from command response
frames and defines the frame as always consisting of a stream of
CBOR values.

The framing protocol media type has been bumped to reflect this
BC change.

Differential Revision: https://phab.mercurial-scm.org/D3382

  $ . $TESTDIR/wireprotohelpers.sh

  $ hg init server
  $ enablehttpv2 server
  $ cd server
  $ cat >> .hg/hgrc << EOF
  > [web]
  > push_ssl = false
  > allow-push = *
  > EOF
  $ hg debugdrawdag << EOF
  > C D
  > |/
  > B
  > |
  > A
  > EOF

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

pushkey for a bookmark works

  $ sendhttpv2peer << EOF
  > command pushkey
  >     namespace bookmarks
  >     key @
  >     old
  >     new 426bada5c67598ca65036d57d9e4b64b0c1ce7a0
  > EOF
  creating http peer for wire protocol version 2
  sending pushkey command
  s>     *\r\n (glob)
  s>     Accept-Encoding: identity\r\n
  s>     accept: application/mercurial-exp-framing-0004\r\n
  s>     content-type: application/mercurial-exp-framing-0004\r\n
  s>     content-length: 105\r\n
  s>     host: $LOCALIP:$HGPORT\r\n (glob)
  s>     user-agent: Mercurial debugwireproto\r\n
  s>     \r\n
  s>     a\x00\x00\x01\x00\x01\x01\x11\xa2Dargs\xa4CkeyA@CnewX(426bada5c67598ca65036d57d9e4b64b0c1ce7a0Cold@InamespaceIbookmarksDnameGpushkey
  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-0004\r\n
  s>     Transfer-Encoding: chunked\r\n
  s>     \r\n
  s>     9\r\n
  s>     \x01\x00\x00\x01\x00\x02\x01B
  s>     \xf5
  s>     \r\n
  received frame(size=1; request=1; stream=2; streamflags=stream-begin; type=bytes-response; flags=eos)
  s>     0\r\n
  s>     \r\n
  response: True

  $ sendhttpv2peer << EOF
  > command listkeys
  >     namespace bookmarks
  > EOF
  creating http peer for wire protocol version 2
  sending listkeys command
  s>     POST /api/exp-http-v2-0001/ro/listkeys HTTP/1.1\r\n
  s>     Accept-Encoding: identity\r\n
  s>     accept: application/mercurial-exp-framing-0004\r\n
  s>     content-type: application/mercurial-exp-framing-0004\r\n
  s>     content-length: 49\r\n
  s>     host: $LOCALIP:$HGPORT\r\n (glob)
  s>     user-agent: Mercurial debugwireproto\r\n
  s>     \r\n
  s>     )\x00\x00\x01\x00\x01\x01\x11\xa2Dargs\xa1InamespaceIbookmarksDnameHlistkeys
  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-0004\r\n
  s>     Transfer-Encoding: chunked\r\n
  s>     \r\n
  s>     35\r\n
  s>     -\x00\x00\x01\x00\x02\x01B
  s>     \xa1A@X(426bada5c67598ca65036d57d9e4b64b0c1ce7a0
  s>     \r\n
  received frame(size=45; request=1; stream=2; streamflags=stream-begin; type=bytes-response; flags=eos)
  s>     0\r\n
  s>     \r\n
  response: {b'@': b'426bada5c67598ca65036d57d9e4b64b0c1ce7a0'}

  $ cat error.log