upstream/mercurial-mirror Commit - r34309:9bd00305

keepalive: add more context to bad status line errors...

Gregory Szorc -

r34309:9bd00305 default

parent child

mercurial/keepalive.py

0 +5 0

              #   This library is free software; you can redistribute it and/or
              #   modify it under the terms of the GNU Lesser General Public
              #   License as published by the Free Software Foundation; either
              #   version 2.1 of the License, or (at your option) any later version.
              #
              #   This library is distributed in the hope that it will be useful,
              #   but WITHOUT ANY WARRANTY; without even the implied warranty of
              #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
              #   Lesser General Public License for more details.
              #
              #   You should have received a copy of the GNU Lesser General Public
              #   License along with this library; if not, see
              #   <http://www.gnu.org/licenses/>.
              # This file is part of urlgrabber, a high-level cross-protocol url-grabber
              # Copyright 2002-2004 Michael D. Stenner, Ryan Tomayko
              # Modified by Benoit Boissinot:
              #  - fix for digest auth (inspired from urllib2.py @ Python v2.4)
              # Modified by Dirkjan Ochtman:
              #  - import md5 function from a local util module
              # Modified by Augie Fackler:
              #  - add safesend method and use it to prevent broken pipe errors
              #    on large POST requests
              """An HTTP handler for urllib2 that supports HTTP 1.1 and keepalive.
              >>> import urllib2
              >>> from keepalive import HTTPHandler
              >>> keepalive_handler = HTTPHandler()
              >>> opener = urlreq.buildopener(keepalive_handler)
              >>> urlreq.installopener(opener)
              >>>
              >>> fo = urlreq.urlopen('http://www.python.org')
              If a connection to a given host is requested, and all of the existing
              connections are still in use, another connection will be opened.  If
              the handler tries to use an existing connection but it fails in some
              way, it will be closed and removed from the pool.
              To remove the handler, simply re-run build_opener with no arguments, and
              install that opener.
              You can explicitly close connections by using the close_connection()
              method of the returned file-like object (described below) or you can
              use the handler methods:
                close_connection(host)
                close_all()
                open_connections()
              NOTE: using the close_connection and close_all methods of the handler
              should be done with care when using multiple threads.
                * there is nothing that prevents another thread from creating new
                  connections immediately after connections are closed
                * no checks are done to prevent in-use connections from being closed
              >>> keepalive_handler.close_all()
              EXTRA ATTRIBUTES AND METHODS
                Upon a status of 200, the object returned has a few additional
                attributes and methods, which should not be used if you want to
                remain consistent with the normal urllib2-returned objects:
                  close_connection()  -  close the connection to the host
                  readlines()         -  you know, readlines()
                  status              -  the return status (i.e. 404)
                  reason              -  english translation of status (i.e. 'File not found')
                If you want the best of both worlds, use this inside an
                AttributeError-catching try:
                >>> try: status = fo.status
                >>> except AttributeError: status = None
                Unfortunately, these are ONLY there if status == 200, so it's not
                easy to distinguish between non-200 responses.  The reason is that
                urllib2 tries to do clever things with error codes 301, 302, 401,
                and 407, and it wraps the object upon return.
              """
              # $Id: keepalive.py,v 1.14 2006/04/04 21:00:32 mstenner Exp $
              from __future__ import absolute_import, print_function
              import errno
              import hashlib
              import socket
              import sys
              import threading
+             from .i18n import _
              from . import (
                  util,
              )
              httplib = util.httplib
              urlerr = util.urlerr
              urlreq = util.urlreq
              DEBUG = None
              class ConnectionManager(object):
                  """
                  The connection manager must be able to:
                    * keep track of all existing
                    """
                  def __init__(self):
                      self._lock = threading.Lock()
                      self._hostmap = {} # map hosts to a list of connections
                      self._connmap = {} # map connections to host
                      self._readymap = {} # map connection to ready state
                  def add(self, host, connection, ready):
                      self._lock.acquire()
                      try:
                          if host not in self._hostmap:
                              self._hostmap[host] = []
                          self._hostmap[host].append(connection)
                          self._connmap[connection] = host
                          self._readymap[connection] = ready
                      finally:
                          self._lock.release()
                  def remove(self, connection):
                      self._lock.acquire()
                      try:
                          try:
                              host = self._connmap[connection]
                          except KeyError:
                              pass
                          else:
                              del self._connmap[connection]
                              del self._readymap[connection]
                              self._hostmap[host].remove(connection)
                              if not self._hostmap[host]: del self._hostmap[host]
                      finally:
                          self._lock.release()
                  def set_ready(self, connection, ready):
                      try:
                          self._readymap[connection] = ready
                      except KeyError:
                          pass
                  def get_ready_conn(self, host):
                      conn = None
                      self._lock.acquire()
                      try:
                          if host in self._hostmap:
                              for c in self._hostmap[host]:
                                  if self._readymap[c]:
                                      self._readymap[c] = 0
                                      conn = c
                                      break
                      finally:
                          self._lock.release()
                      return conn
                  def get_all(self, host=None):
                      if host:
                          return list(self._hostmap.get(host, []))
                      else:
                          return dict(self._hostmap)
              class KeepAliveHandler(object):
                  def __init__(self):
                      self._cm = ConnectionManager()
                  #### Connection Management
                  def open_connections(self):
                      """return a list of connected hosts and the number of connections
                      to each.  [('foo.com:80', 2), ('bar.org', 1)]"""
                      return [(host, len(li)) for (host, li) in self._cm.get_all().items()]
                  def close_connection(self, host):
                      """close connection(s) to <host>
                      host is the host:port spec, as in 'www.cnn.com:8080' as passed in.
                      no error occurs if there is no connection to that host."""
                      for h in self._cm.get_all(host):
                          self._cm.remove(h)
                          h.close()
                  def close_all(self):
                      """close all open connections"""
                      for host, conns in self._cm.get_all().iteritems():
                          for h in conns:
                              self._cm.remove(h)
                              h.close()
                  def _request_closed(self, request, host, connection):
                      """tells us that this request is now closed and that the
                      connection is ready for another request"""
                      self._cm.set_ready(connection, 1)
                  def _remove_connection(self, host, connection, close=0):
                      if close:
                          connection.close()
                      self._cm.remove(connection)
                  #### Transaction Execution
                  def http_open(self, req):
                      return self.do_open(HTTPConnection, req)
                  def do_open(self, http_class, req):
                      host = req.get_host()
                      if not host:
                          raise urlerr.urlerror('no host given')
                      try:
                          h = self._cm.get_ready_conn(host)
                          while h:
                              r = self._reuse_connection(h, req, host)
                              # if this response is non-None, then it worked and we're
                              # done.  Break out, skipping the else block.
                              if r:
                                  break
                              # connection is bad - possibly closed by server
                              # discard it and ask for the next free connection
                              h.close()
                              self._cm.remove(h)
                              h = self._cm.get_ready_conn(host)
                          else:
                              # no (working) free connections were found.  Create a new one.
                              h = http_class(host)
                              if DEBUG:
                                  DEBUG.info("creating new connection to %s (%d)",
                                             host, id(h))
                              self._cm.add(host, h, 0)
                              self._start_transaction(h, req)
                              r = h.getresponse()
+                     # The string form of BadStatusLine is the status line. Add some context
+                     # to make the error message slightly more useful.
+                     except httplib.BadStatusLine as err:
+                         raise urlerr.urlerror(_('bad HTTP status line: %s') % err.line)
                      except (socket.error, httplib.HTTPException) as err:
                          raise urlerr.urlerror(err)
                      # if not a persistent connection, don't try to reuse it
                      if r.will_close:
                          self._cm.remove(h)
                      if DEBUG:
                          DEBUG.info("STATUS: %s, %s", r.status, r.reason)
                      r._handler = self
                      r._host = host
                      r._url = req.get_full_url()
                      r._connection = h
                      r.code = r.status
                      r.headers = r.msg
                      r.msg = r.reason
                      return r
                  def _reuse_connection(self, h, req, host):
                      """start the transaction with a re-used connection
                      return a response object (r) upon success or None on failure.
                      This DOES not close or remove bad connections in cases where
                      it returns.  However, if an unexpected exception occurs, it
                      will close and remove the connection before re-raising.
                      """
                      try:
                          self._start_transaction(h, req)
                          r = h.getresponse()
                          # note: just because we got something back doesn't mean it
                          # worked.  We'll check the version below, too.
                      except (socket.error, httplib.HTTPException):
                          r = None
                      except: # re-raises
                          # adding this block just in case we've missed
                          # something we will still raise the exception, but
                          # lets try and close the connection and remove it
                          # first.  We previously got into a nasty loop
                          # where an exception was uncaught, and so the
                          # connection stayed open.  On the next try, the
                          # same exception was raised, etc.  The trade-off is
                          # that it's now possible this call will raise
                          # a DIFFERENT exception
                          if DEBUG:
                              DEBUG.error("unexpected exception - closing "
                                          "connection to %s (%d)", host, id(h))
                          self._cm.remove(h)
                          h.close()
                          raise
                      if r is None or r.version == 9:
                          # httplib falls back to assuming HTTP 0.9 if it gets a
                          # bad header back.  This is most likely to happen if
                          # the socket has been closed by the server since we
                          # last used the connection.
                          if DEBUG:
                              DEBUG.info("failed to re-use connection to %s (%d)",
                                         host, id(h))
                          r = None
                      else:
                          if DEBUG:
                              DEBUG.info("re-using connection to %s (%d)", host, id(h))
                      return r
                  def _start_transaction(self, h, req):
                      # What follows mostly reimplements HTTPConnection.request()
                      # except it adds self.parent.addheaders in the mix and sends headers
                      # in a deterministic order (to make testing easier).
                      headers = util.sortdict(self.parent.addheaders)
                      headers.update(sorted(req.headers.items()))
                      headers.update(sorted(req.unredirected_hdrs.items()))
                      headers = util.sortdict((n.lower(), v) for n, v in headers.items())
                      skipheaders = {}
                      for n in ('host', 'accept-encoding'):
                          if n in headers:
                              skipheaders['skip_' + n.replace('-', '_')] = 1
                      try:
                          if req.has_data():
                              data = req.get_data()
                              h.putrequest(
                                  req.get_method(), req.get_selector(), **skipheaders)
                              if 'content-type' not in headers:
                                  h.putheader('Content-type',
                                              'application/x-www-form-urlencoded')
                              if 'content-length' not in headers:
                                  h.putheader('Content-length', '%d' % len(data))
                          else:
                              h.putrequest(
                                  req.get_method(), req.get_selector(), **skipheaders)
                      except socket.error as err:
                          raise urlerr.urlerror(err)
                      for k, v in headers.items():
                          h.putheader(k, v)
                      h.endheaders()
                      if req.has_data():
                          h.send(data)
              class HTTPHandler(KeepAliveHandler, urlreq.httphandler):
                  pass
              class HTTPResponse(httplib.HTTPResponse):
                  # we need to subclass HTTPResponse in order to
                  # 1) add readline() and readlines() methods
                  # 2) add close_connection() methods
                  # 3) add info() and geturl() methods
                  # in order to add readline(), read must be modified to deal with a
                  # buffer.  example: readline must read a buffer and then spit back
                  # one line at a time.  The only real alternative is to read one
                  # BYTE at a time (ick).  Once something has been read, it can't be
                  # put back (ok, maybe it can, but that's even uglier than this),
                  # so if you THEN do a normal read, you must first take stuff from
                  # the buffer.
                  # the read method wraps the original to accommodate buffering,
                  # although read() never adds to the buffer.
                  # Both readline and readlines have been stolen with almost no
                  # modification from socket.py
                  def __init__(self, sock, debuglevel=0, strict=0, method=None):
                      httplib.HTTPResponse.__init__(self, sock, debuglevel=debuglevel,
                                                    strict=True, method=method,
                                                    buffering=True)
                      self.fileno = sock.fileno
                      self.code = None
                      self._rbuf = ''
                      self._rbufsize = 8096
                      self._handler = None # inserted by the handler later
                      self._host = None    # (same)
                      self._url = None     # (same)
                      self._connection = None # (same)
                  _raw_read = httplib.HTTPResponse.read
                  def close(self):
                      if self.fp:
                          self.fp.close()
                          self.fp = None
                          if self._handler:
                              self._handler._request_closed(self, self._host,
                                                            self._connection)
                  def close_connection(self):
                      self._handler._remove_connection(self._host, self._connection, close=1)
                      self.close()
                  def info(self):
                      return self.headers
                  def geturl(self):
                      return self._url
                  def read(self, amt=None):
                      # the _rbuf test is only in this first if for speed.  It's not
                      # logically necessary
                      if self._rbuf and not amt is None:
                          L = len(self._rbuf)
                          if amt > L:
                              amt -= L
                          else:
                              s = self._rbuf[:amt]
                              self._rbuf = self._rbuf[amt:]
                              return s
                      s = self._rbuf + self._raw_read(amt)
                      self._rbuf = ''
                      return s
                  # stolen from Python SVN #68532 to fix issue1088
                  def _read_chunked(self, amt):
                      chunk_left = self.chunk_left
                      parts = []
                      while True:
                          if chunk_left is None:
                              line = self.fp.readline()
                              i = line.find(';')
                              if i >= 0:
                                  line = line[:i] # strip chunk-extensions
                              try:
                                  chunk_left = int(line, 16)
                              except ValueError:
                                  # close the connection as protocol synchronization is
                                  # probably lost
                                  self.close()
                                  raise httplib.IncompleteRead(''.join(parts))
                              if chunk_left == 0:
                                  break
                          if amt is None:
                              parts.append(self._safe_read(chunk_left))
                          elif amt < chunk_left:
                              parts.append(self._safe_read(amt))
                              self.chunk_left = chunk_left - amt
                              return ''.join(parts)
                          elif amt == chunk_left:
                              parts.append(self._safe_read(amt))
                              self._safe_read(2)  # toss the CRLF at the end of the chunk
                              self.chunk_left = None
                              return ''.join(parts)
                          else:
                              parts.append(self._safe_read(chunk_left))
                              amt -= chunk_left
                          # we read the whole chunk, get another
                          self._safe_read(2)      # toss the CRLF at the end of the chunk
                          chunk_left = None
                      # read and discard trailer up to the CRLF terminator
                      ### note: we shouldn't have any trailers!
                      while True:
                          line = self.fp.readline()
                          if not line:
                              # a vanishingly small number of sites EOF without
                              # sending the trailer
                              break
                          if line == '\r\n':
                              break
                      # we read everything; close the "file"
                      self.close()
                      return ''.join(parts)
                  def readline(self):
                      # Fast path for a line is already available in read buffer.
                      i = self._rbuf.find('\n')
                      if i >= 0:
                          i += 1
                          line = self._rbuf[:i]
                          self._rbuf = self._rbuf[i:]
                          return line
                      # No newline in local buffer. Read until we find one.
                      chunks = [self._rbuf]
                      i = -1
                      readsize = self._rbufsize
                      while True:
                          new = self._raw_read(readsize)
                          if not new:
                              break
                          chunks.append(new)
                          i = new.find('\n')
                          if i >= 0:
                              break
                      # We either have exhausted the stream or have a newline in chunks[-1].
                      # EOF
                      if i == -1:
                          self._rbuf = ''
                          return ''.join(chunks)
                      i += 1
                      self._rbuf = chunks[-1][i:]
                      chunks[-1] = chunks[-1][:i]
                      return ''.join(chunks)
                  def readlines(self, sizehint=0):
                      total = 0
                      list = []
                      while True:
                          line = self.readline()
                          if not line:
                              break
                          list.append(line)
                          total += len(line)
                          if sizehint and total >= sizehint:
                              break
                      return list
              def safesend(self, str):
                  """Send `str' to the server.
                  Shamelessly ripped off from httplib to patch a bad behavior.
                  """
                  # _broken_pipe_resp is an attribute we set in this function
                  # if the socket is closed while we're sending data but
                  # the server sent us a response before hanging up.
                  # In that case, we want to pretend to send the rest of the
                  # outgoing data, and then let the user use getresponse()
                  # (which we wrap) to get this last response before
                  # opening a new socket.
                  if getattr(self, '_broken_pipe_resp', None) is not None:
                      return
                  if self.sock is None:
                      if self.auto_open:
                          self.connect()
                      else:
                          raise httplib.NotConnected
                  # send the data to the server. if we get a broken pipe, then close
                  # the socket. we want to reconnect when somebody tries to send again.
                  #
                  # NOTE: we DO propagate the error, though, because we cannot simply
                  #       ignore the error... the caller will know if they can retry.
                  if self.debuglevel > 0:
                      print("send:", repr(str))
                  try:
                      blocksize = 8192
                      read = getattr(str, 'read', None)
                      if read is not None:
                          if self.debuglevel > 0:
                              print("sending a read()able")
                          data = read(blocksize)
                          while data:
                              self.sock.sendall(data)
                              data = read(blocksize)
                      else:
                          self.sock.sendall(str)
                  except socket.error as v:
                      reraise = True
                      if v[0] == errno.EPIPE:      # Broken pipe
                          if self._HTTPConnection__state == httplib._CS_REQ_SENT:
                              self._broken_pipe_resp = None
                              self._broken_pipe_resp = self.getresponse()
                              reraise = False
                          self.close()
                      if reraise:
                          raise
              def wrapgetresponse(cls):
                  """Wraps getresponse in cls with a broken-pipe sane version.
                  """
                  def safegetresponse(self):
                      # In safesend() we might set the _broken_pipe_resp
                      # attribute, in which case the socket has already
                      # been closed and we just need to give them the response
                      # back. Otherwise, we use the normal response path.
                      r = getattr(self, '_broken_pipe_resp', None)
                      if r is not None:
                          return r
                      return cls.getresponse(self)
                  safegetresponse.__doc__ = cls.getresponse.__doc__
                  return safegetresponse
              class HTTPConnection(httplib.HTTPConnection):
                  # use the modified response class
                  response_class = HTTPResponse
                  send = safesend
                  getresponse = wrapgetresponse(httplib.HTTPConnection)
              #########################################################################
              #####   TEST FUNCTIONS
              #########################################################################
              def continuity(url):
                  md5 = hashlib.md5
                  format = '%25s: %s'
                  # first fetch the file with the normal http handler
                  opener = urlreq.buildopener()
                  urlreq.installopener(opener)
                  fo = urlreq.urlopen(url)
                  foo = fo.read()
                  fo.close()
                  m = md5(foo)
                  print(format % ('normal urllib', m.hexdigest()))
                  # now install the keepalive handler and try again
                  opener = urlreq.buildopener(HTTPHandler())
                  urlreq.installopener(opener)
                  fo = urlreq.urlopen(url)
                  foo = fo.read()
                  fo.close()
                  m = md5(foo)
                  print(format % ('keepalive read', m.hexdigest()))
                  fo = urlreq.urlopen(url)
                  foo = ''
                  while True:
                      f = fo.readline()
                      if f:
                          foo = foo + f
                      else: break
                  fo.close()
                  m = md5(foo)
                  print(format % ('keepalive readline', m.hexdigest()))
              def comp(N, url):
                  print('  making %i connections to:\n  %s' % (N, url))
                  util.stdout.write('  first using the normal urllib handlers')
                  # first use normal opener
                  opener = urlreq.buildopener()
                  urlreq.installopener(opener)
                  t1 = fetch(N, url)
                  print('  TIME: %.3f s' % t1)
                  util.stdout.write('  now using the keepalive handler       ')
                  # now install the keepalive handler and try again
                  opener = urlreq.buildopener(HTTPHandler())
                  urlreq.installopener(opener)
                  t2 = fetch(N, url)
                  print('  TIME: %.3f s' % t2)
                  print('  improvement factor: %.2f' % (t1 / t2))
              def fetch(N, url, delay=0):
                  import time
                  lens = []
                  starttime = time.time()
                  for i in range(N):
                      if delay and i > 0:
                          time.sleep(delay)
                      fo = urlreq.urlopen(url)
                      foo = fo.read()
                      fo.close()
                      lens.append(len(foo))
                  diff = time.time() - starttime
                  j = 0
                  for i in lens[1:]:
                      j = j + 1
                      if not i == lens[0]:
                          print("WARNING: inconsistent length on read %i: %i" % (j, i))
                  return diff
              def test_timeout(url):
                  global DEBUG
                  dbbackup = DEBUG
                  class FakeLogger(object):
                      def debug(self, msg, *args):
                          print(msg % args)
                      info = warning = error = debug
                  DEBUG = FakeLogger()
                  print("  fetching the file to establish a connection")
                  fo = urlreq.urlopen(url)
                  data1 = fo.read()
                  fo.close()
                  i = 20
                  print("  waiting %i seconds for the server to close the connection" % i)
                  while i > 0:
                      util.stdout.write('\r  %2i' % i)
                      util.stdout.flush()
                      time.sleep(1)
                      i -= 1
                  util.stderr.write('\r')
                  print("  fetching the file a second time")
                  fo = urlreq.urlopen(url)
                  data2 = fo.read()
                  fo.close()
                  if data1 == data2:
                      print('  data are identical')
                  else:
                      print('  ERROR: DATA DIFFER')
                  DEBUG = dbbackup
              def test(url, N=10):
                  print("performing continuity test (making sure stuff isn't corrupted)")
                  continuity(url)
                  print('')
                  print("performing speed comparison")
                  comp(N, url)
                  print('')
                  print("performing dropped-connection check")
                  test_timeout(url)
              if __name__ == '__main__':
                  import time
                  try:
                      N = int(sys.argv[1])
                      url = sys.argv[2]
                  except (IndexError, ValueError):
                      print("%s <integer> <url>" % sys.argv[0])
                  else:
                      test(url, N)

tests/test-http-bad-server.t

0 +6 -8

              #require killdaemons serve zstd
              Client version is embedded in HTTP request and is effectively dynamic. Pin the
              version so behavior is deterministic.
                $ cat > fakeversion.py << EOF
                > from mercurial import util
                > util.version = lambda: '4.2'
                > EOF
                $ cat >> $HGRCPATH << EOF
                > [extensions]
                > fakeversion = `pwd`/fakeversion.py
                > EOF
                $ hg init server0
                $ cd server0
                $ touch foo
                $ hg -q commit -A -m initial
              Also disable compression because zstd is optional and causes output to vary
              and because debugging partial responses is hard when compression is involved
                $ cat > .hg/hgrc << EOF
                > [extensions]
                > badserver = $TESTDIR/badserverext.py
                > [server]
                > compressionengines = none
                > EOF
              Failure to accept() socket should result in connection related error message
                $ hg --config badserver.closebeforeaccept=true serve -p $HGPORT -d --pid-file=hg.pid
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                abort: error: Connection reset by peer (no-windows !)
                abort: error: An existing connection was forcibly closed by the remote host (windows !)
                [255]
              (The server exits on its own, but there is a race between that and starting a new server.
              So ensure the process is dead.)
                $ killdaemons.py $DAEMON_PIDS
              Failure immediately after accept() should yield connection related error message
                $ hg --config badserver.closeafteraccept=true serve -p $HGPORT -d --pid-file=hg.pid
                $ cat hg.pid > $DAEMON_PIDS
              TODO: this usually outputs good results, but sometimes emits abort:
              error: '' on FreeBSD and OS X.
              What we ideally want are:
              abort: error: Connection reset by peer (no-windows !)
              abort: error: An existing connection was forcibly closed by the remote host (windows !)
              The flakiness in this output was observable easily with
              --runs-per-test=20 on macOS 10.12 during the freeze for 4.2.
                $ hg clone http://localhost:$HGPORT/ clone
                abort: error: * (glob)
                [255]
                $ killdaemons.py $DAEMON_PIDS
              Failure to read all bytes in initial HTTP request should yield connection related error message
                $ hg --config badserver.closeafterrecvbytes=1 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
-             TODO this error message is not very good
                $ hg clone http://localhost:$HGPORT/ clone
-               abort: error: ''
+               abort: error: bad HTTP status line: ''
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(1 from 65537) -> (1) G
                read limit reached; closing socket
                $ rm -f error.log
              Same failure, but server reads full HTTP request line
                $ hg --config badserver.closeafterrecvbytes=40 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
-               abort: error: ''
+               abort: error: bad HTTP status line: ''
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(40 from 65537) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
                readline(7 from -1) -> (7) Accept-
                read limit reached; closing socket
                $ rm -f error.log
              Failure on subsequent HTTP request on the same socket (cmd?batch)
                $ hg --config badserver.closeafterrecvbytes=210 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
-               abort: error: ''
+               abort: error: bad HTTP status line: ''
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(210 from 65537) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
                readline(177 from -1) -> (27) Accept-Encoding: identity\r\n
                readline(150 from -1) -> (35) accept: application/mercurial-0.1\r\n
                readline(115 from -1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(9? from -1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n (glob)
                readline(4? from -1) -> (2) \r\n (glob)
                write(36) -> HTTP/1.1 200 Script output follows\r\n
                write(23) -> Server: badhttpserver\r\n
                write(37) -> Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41) -> Content-Type: application/mercurial-0.1\r\n
                write(21) -> Content-Length: 405\r\n
                write(2) -> \r\n
                write(405) -> lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch streamreqs=generaldelta,revlogv1 bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Aerror%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0Ahgtagsfnodes%0Alistkeys%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx compression=none
                readline(4? from 65537) -> (26) GET /?cmd=batch HTTP/1.1\r\n (glob)
                readline(1? from -1) -> (1?) Accept-Encoding* (glob)
                read limit reached; closing socket
                readline(210 from 65537) -> (26) GET /?cmd=batch HTTP/1.1\r\n
                readline(184 from -1) -> (27) Accept-Encoding: identity\r\n
                readline(157 from -1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n
                readline(128 from -1) -> (41) x-hgarg-1: cmds=heads+%3Bknown+nodes%3D\r\n
                readline(87 from -1) -> (48) x-hgproto-1: 0.1 0.2 comp=zstd,zlib,none,bzip2\r\n
                readline(39 from -1) -> (35) accept: application/mercurial-0.1\r\n
                readline(4 from -1) -> (4) host
                read limit reached; closing socket
                $ rm -f error.log
              Failure to read getbundle HTTP request
                $ hg --config badserver.closeafterrecvbytes=292 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
-               abort: error: ''
+               abort: error: bad HTTP status line: ''
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(292 from 65537) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
                readline(259 from -1) -> (27) Accept-Encoding: identity\r\n
                readline(232 from -1) -> (35) accept: application/mercurial-0.1\r\n
                readline(197 from -1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(17? from -1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n (glob)
                readline(12? from -1) -> (2) \r\n (glob)
                write(36) -> HTTP/1.1 200 Script output follows\r\n
                write(23) -> Server: badhttpserver\r\n
                write(37) -> Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41) -> Content-Type: application/mercurial-0.1\r\n
                write(21) -> Content-Length: 405\r\n
                write(2) -> \r\n
                write(405) -> lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch streamreqs=generaldelta,revlogv1 bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Aerror%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0Ahgtagsfnodes%0Alistkeys%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx compression=none
                readline\(12[34] from 65537\) -> \(2[67]\) GET /\?cmd=batch HTTP/1.1\\r\\n (re)
                readline(9? from -1) -> (27) Accept-Encoding: identity\r\n (glob)
                readline(7? from -1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n (glob)
                readline(4? from -1) -> (41) x-hgarg-1: cmds=heads+%3Bknown+nodes%3D\r\n (glob)
                readline(1 from -1) -> (1) x (?)
                read limit reached; closing socket
                readline(292 from 65537) -> (26) GET /?cmd=batch HTTP/1.1\r\n
                readline(266 from -1) -> (27) Accept-Encoding: identity\r\n
                readline(239 from -1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n
                readline(210 from -1) -> (41) x-hgarg-1: cmds=heads+%3Bknown+nodes%3D\r\n
                readline(169 from -1) -> (48) x-hgproto-1: 0.1 0.2 comp=zstd,zlib,none,bzip2\r\n
                readline(121 from -1) -> (35) accept: application/mercurial-0.1\r\n
                readline(86 from -1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(6? from -1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n (glob)
                readline(1? from -1) -> (2) \r\n (glob)
                write(36) -> HTTP/1.1 200 Script output follows\r\n
                write(23) -> Server: badhttpserver\r\n
                write(37) -> Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41) -> Content-Type: application/mercurial-0.1\r\n
                write(20) -> Content-Length: 42\r\n
                write(2) -> \r\n
                write(42) -> 96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n;
                readline\(1[23] from 65537\) -> \(1[23]\) GET /\?cmd=ge.? (re)
                read limit reached; closing socket
                readline(292 from 65537) -> (30) GET /?cmd=getbundle HTTP/1.1\r\n
                readline(262 from -1) -> (27) Accept-Encoding: identity\r\n
                readline(235 from -1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n
                readline(206 from -1) -> (206) x-hgarg-1: bundlecaps=HG20%2Cbundle2%3DHG20%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Ali
                read limit reached; closing socket
                $ rm -f error.log
              Now do a variation using POST to send arguments
                $ hg --config experimental.httppostargs=true --config badserver.closeafterrecvbytes=315 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
-               abort: error: ''
+               abort: error: bad HTTP status line: ''
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(315 from 65537) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
                readline(282 from -1) -> (27) Accept-Encoding: identity\r\n
                readline(255 from -1) -> (35) accept: application/mercurial-0.1\r\n
                readline(220 from -1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(19? from -1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n (glob)
                readline(14? from -1) -> (2) \r\n (glob)
                write(36) -> HTTP/1.1 200 Script output follows\r\n
                write(23) -> Server: badhttpserver\r\n
                write(37) -> Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41) -> Content-Type: application/mercurial-0.1\r\n
                write(21) -> Content-Length: 418\r\n
                write(2) -> \r\n
                write(418) -> lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch streamreqs=generaldelta,revlogv1 bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Aerror%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0Ahgtagsfnodes%0Alistkeys%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 httppostargs httpmediatype=0.1rx,0.1tx,0.2tx compression=none
                readline\(14[67] from 65537\) -> \(2[67]\) POST /\?cmd=batch HTTP/1.1\\r\\n (re)
                readline\(1(19|20) from -1\) -> \(27\) Accept-Encoding: identity\\r\\n (re)
                readline(9? from -1) -> (41) content-type: application/mercurial-0.1\r\n (glob)
                readline(5? from -1) -> (19) vary: X-HgProto-1\r\n (glob)
                readline(3? from -1) -> (19) x-hgargs-post: 28\r\n (glob)
                readline(1? from -1) -> (1?) x-hgproto-1: * (glob)
                read limit reached; closing socket
                readline(315 from 65537) -> (27) POST /?cmd=batch HTTP/1.1\r\n
                readline(288 from -1) -> (27) Accept-Encoding: identity\r\n
                readline(261 from -1) -> (41) content-type: application/mercurial-0.1\r\n
                readline(220 from -1) -> (19) vary: X-HgProto-1\r\n
                readline(201 from -1) -> (19) x-hgargs-post: 28\r\n
                readline(182 from -1) -> (48) x-hgproto-1: 0.1 0.2 comp=zstd,zlib,none,bzip2\r\n
                readline(134 from -1) -> (35) accept: application/mercurial-0.1\r\n
                readline(99 from -1) -> (20) content-length: 28\r\n
                readline(79 from -1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(5? from -1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n (glob)
                readline(? from -1) -> (2) \r\n (glob)
                read(? from 28) -> (?) cmds=* (glob)
                read limit reached, closing socket
                write(36) -> HTTP/1.1 500 Internal Server Error\r\n
                $ rm -f error.log
              Now move on to partial server responses
              Server sends a single character from the HTTP response line
                $ hg --config badserver.closeaftersendbytes=1 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
-               abort: error: H
+               abort: error: bad HTTP status line: H
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(65537) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(1 from 36) -> (0) H
                write limit reached; closing socket
                write(36) -> HTTP/1.1 500 Internal Server Error\r\n
                $ rm -f error.log
              Server sends an incomplete capabilities response body
                $ hg --config badserver.closeaftersendbytes=180 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                abort: HTTP request error (incomplete response; expected 385 bytes got 20)
                (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(65537) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (144) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (121) Server: badhttpserver\r\n
                write(37 from 37) -> (84) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (43) Content-Type: application/mercurial-0.1\r\n
                write(21 from 21) -> (22) Content-Length: 405\r\n
                write(2 from 2) -> (20) \r\n
                write(20 from 405) -> (0) lookup changegroupsu
                write limit reached; closing socket
                $ rm -f error.log
              Server sends incomplete headers for batch request
                $ hg --config badserver.closeaftersendbytes=695 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
              TODO this output is horrible
                $ hg clone http://localhost:$HGPORT/ clone
                abort: 'http://localhost:$HGPORT/' does not appear to be an hg repository:
                ---%<--- (application/mercuria)
                ---%<---
                !
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(65537) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (659) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (636) Server: badhttpserver\r\n
                write(37 from 37) -> (599) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (558) Content-Type: application/mercurial-0.1\r\n
                write(21 from 21) -> (537) Content-Length: 405\r\n
                write(2 from 2) -> (535) \r\n
                write(405 from 405) -> (130) lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch streamreqs=generaldelta,revlogv1 bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Aerror%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0Ahgtagsfnodes%0Alistkeys%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx compression=none
                readline(65537) -> (26) GET /?cmd=batch HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n
                readline(-1) -> (41) x-hgarg-1: cmds=heads+%3Bknown+nodes%3D\r\n
                readline(-1) -> (48) x-hgproto-1: 0.1 0.2 comp=zstd,zlib,none,bzip2\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (94) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (71) Server: badhttpserver\r\n
                write(37 from 37) -> (34) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(34 from 41) -> (0) Content-Type: application/mercuria
                write limit reached; closing socket
                write(36) -> HTTP/1.1 500 Internal Server Error\r\n
                $ rm -f error.log
              Server sends an incomplete HTTP response body to batch request
                $ hg --config badserver.closeaftersendbytes=760 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
              TODO client spews a stack due to uncaught ValueError in batch.results()
                $ hg clone http://localhost:$HGPORT/ clone 2> /dev/null
                [1]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(65537) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (724) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (701) Server: badhttpserver\r\n
                write(37 from 37) -> (664) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (623) Content-Type: application/mercurial-0.1\r\n
                write(21 from 21) -> (602) Content-Length: 405\r\n
                write(2 from 2) -> (600) \r\n
                write(405 from 405) -> (195) lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch streamreqs=generaldelta,revlogv1 bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Aerror%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0Ahgtagsfnodes%0Alistkeys%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx compression=none
                readline(65537) -> (26) GET /?cmd=batch HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n
                readline(-1) -> (41) x-hgarg-1: cmds=heads+%3Bknown+nodes%3D\r\n
                readline(-1) -> (48) x-hgproto-1: 0.1 0.2 comp=zstd,zlib,none,bzip2\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (159) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (136) Server: badhttpserver\r\n
                write(37 from 37) -> (99) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (58) Content-Type: application/mercurial-0.1\r\n
                write(20 from 20) -> (38) Content-Length: 42\r\n
                write(2 from 2) -> (36) \r\n
                write(36 from 42) -> (0) 96ee1d7354c4ad7372047672c36a1f561e3a
                write limit reached; closing socket
                $ rm -f error.log
              Server sends incomplete headers for getbundle response
                $ hg --config badserver.closeaftersendbytes=895 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
              TODO this output is terrible
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                abort: 'http://localhost:$HGPORT/' does not appear to be an hg repository:
                ---%<--- (application/mercuri)
                ---%<---
                !
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(65537) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (859) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (836) Server: badhttpserver\r\n
                write(37 from 37) -> (799) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (758) Content-Type: application/mercurial-0.1\r\n
                write(21 from 21) -> (737) Content-Length: 405\r\n
                write(2 from 2) -> (735) \r\n
                write(405 from 405) -> (330) lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch streamreqs=generaldelta,revlogv1 bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Aerror%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0Ahgtagsfnodes%0Alistkeys%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx compression=none
                readline(65537) -> (26) GET /?cmd=batch HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n
                readline(-1) -> (41) x-hgarg-1: cmds=heads+%3Bknown+nodes%3D\r\n
                readline(-1) -> (48) x-hgproto-1: 0.1 0.2 comp=zstd,zlib,none,bzip2\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (294) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (271) Server: badhttpserver\r\n
                write(37 from 37) -> (234) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (193) Content-Type: application/mercurial-0.1\r\n
                write(20 from 20) -> (173) Content-Length: 42\r\n
                write(2 from 2) -> (171) \r\n
                write(42 from 42) -> (129) 96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n;
                readline(65537) -> (30) GET /?cmd=getbundle HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n
                readline(-1) -> (396) x-hgarg-1: bundlecaps=HG20%2Cbundle2%3DHG20%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=1&common=0000000000000000000000000000000000000000&heads=96ee1d7354c4ad7372047672c36a1f561e3a6a4c&listkeys=phases%2Cbookmarks\r\n
                readline(-1) -> (48) x-hgproto-1: 0.1 0.2 comp=zstd,zlib,none,bzip2\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (93) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (70) Server: badhttpserver\r\n
                write(37 from 37) -> (33) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(33 from 41) -> (0) Content-Type: application/mercuri
                write limit reached; closing socket
                write(36) -> HTTP/1.1 500 Internal Server Error\r\n
                $ rm -f error.log
              Server sends empty HTTP body for getbundle
                $ hg --config badserver.closeaftersendbytes=933 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                abort: HTTP request error (incomplete response)
                (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(65537) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (897) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (874) Server: badhttpserver\r\n
                write(37 from 37) -> (837) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (796) Content-Type: application/mercurial-0.1\r\n
                write(21 from 21) -> (775) Content-Length: 405\r\n
                write(2 from 2) -> (773) \r\n
                write(405 from 405) -> (368) lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch streamreqs=generaldelta,revlogv1 bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Aerror%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0Ahgtagsfnodes%0Alistkeys%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx compression=none
                readline(65537) -> (26) GET /?cmd=batch HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n
                readline(-1) -> (41) x-hgarg-1: cmds=heads+%3Bknown+nodes%3D\r\n
                readline(-1) -> (48) x-hgproto-1: 0.1 0.2 comp=zstd,zlib,none,bzip2\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (332) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (309) Server: badhttpserver\r\n
                write(37 from 37) -> (272) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (231) Content-Type: application/mercurial-0.1\r\n
                write(20 from 20) -> (211) Content-Length: 42\r\n
                write(2 from 2) -> (209) \r\n
                write(42 from 42) -> (167) 96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n;
                readline(65537) -> (30) GET /?cmd=getbundle HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n
                readline(-1) -> (396) x-hgarg-1: bundlecaps=HG20%2Cbundle2%3DHG20%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=1&common=0000000000000000000000000000000000000000&heads=96ee1d7354c4ad7372047672c36a1f561e3a6a4c&listkeys=phases%2Cbookmarks\r\n
                readline(-1) -> (48) x-hgproto-1: 0.1 0.2 comp=zstd,zlib,none,bzip2\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (131) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (108) Server: badhttpserver\r\n
                write(37 from 37) -> (71) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (30) Content-Type: application/mercurial-0.2\r\n
                write(28 from 28) -> (2) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (0) \r\n
                write limit reached; closing socket
                write(36) -> HTTP/1.1 500 Internal Server Error\r\n
                $ rm -f error.log
              Server sends partial compression string
                $ hg --config badserver.closeaftersendbytes=945 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                abort: HTTP request error (incomplete response; expected 1 bytes got 3)
                (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ cat error.log
                readline(65537) -> (33) GET /?cmd=capabilities HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (909) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (886) Server: badhttpserver\r\n
                write(37 from 37) -> (849) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (808) Content-Type: application/mercurial-0.1\r\n
                write(21 from 21) -> (787) Content-Length: 405\r\n
                write(2 from 2) -> (785) \r\n
                write(405 from 405) -> (380) lookup changegroupsubset branchmap pushkey known getbundle unbundlehash batch streamreqs=generaldelta,revlogv1 bundle2=HG20%0Achangegroup%3D01%2C02%0Adigests%3Dmd5%2Csha1%2Csha512%0Aerror%3Dabort%2Cunsupportedcontent%2Cpushraced%2Cpushkey%0Ahgtagsfnodes%0Alistkeys%0Apushkey%0Aremote-changegroup%3Dhttp%2Chttps unbundle=HG10GZ,HG10BZ,HG10UN httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx compression=none
                readline(65537) -> (26) GET /?cmd=batch HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n
                readline(-1) -> (41) x-hgarg-1: cmds=heads+%3Bknown+nodes%3D\r\n
                readline(-1) -> (48) x-hgproto-1: 0.1 0.2 comp=zstd,zlib,none,bzip2\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (344) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (321) Server: badhttpserver\r\n
                write(37 from 37) -> (284) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (243) Content-Type: application/mercurial-0.1\r\n
                write(20 from 20) -> (223) Content-Length: 42\r\n
                write(2 from 2) -> (221) \r\n
                write(42 from 42) -> (179) 96ee1d7354c4ad7372047672c36a1f561e3a6a4c\n;
                readline(65537) -> (30) GET /?cmd=getbundle HTTP/1.1\r\n
                readline(-1) -> (27) Accept-Encoding: identity\r\n
                readline(-1) -> (29) vary: X-HgArg-1,X-HgProto-1\r\n
                readline(-1) -> (396) x-hgarg-1: bundlecaps=HG20%2Cbundle2%3DHG20%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=1&common=0000000000000000000000000000000000000000&heads=96ee1d7354c4ad7372047672c36a1f561e3a6a4c&listkeys=phases%2Cbookmarks\r\n
                readline(-1) -> (48) x-hgproto-1: 0.1 0.2 comp=zstd,zlib,none,bzip2\r\n
                readline(-1) -> (35) accept: application/mercurial-0.1\r\n
                readline(-1) -> (2?) host: localhost:$HGPORT\r\n (glob)
                readline(-1) -> (49) user-agent: mercurial/proto-1.0 (Mercurial 4.2)\r\n
                readline(-1) -> (2) \r\n
                write(36 from 36) -> (143) HTTP/1.1 200 Script output follows\r\n
                write(23 from 23) -> (120) Server: badhttpserver\r\n
                write(37 from 37) -> (83) Date: Fri, 14 Apr 2017 00:00:00 GMT\r\n
                write(41 from 41) -> (42) Content-Type: application/mercurial-0.2\r\n
                write(28 from 28) -> (14) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (12) \r\n
                write(6 from 6) -> (6) 1\\r\\n\x04\\r\\n (esc)
                write(6 from 9) -> (0) 4\r\nnon
                write limit reached; closing socket
                write(27) -> 15\r\nInternal Server Error\r\n
                $ rm -f error.log
              Server sends partial bundle2 header magic
                $ hg --config badserver.closeaftersendbytes=954 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                abort: HTTP request error (incomplete response; expected 1 bytes got 3)
                (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ tail -7 error.log
                write(28 from 28) -> (23) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (21) \r\n
                write(6 from 6) -> (15) 1\\r\\n\x04\\r\\n (esc)
                write(9 from 9) -> (6) 4\r\nnone\r\n
                write(6 from 9) -> (0) 4\r\nHG2
                write limit reached; closing socket
                write(27) -> 15\r\nInternal Server Error\r\n
                $ rm -f error.log
              Server sends incomplete bundle2 stream params length
                $ hg --config badserver.closeaftersendbytes=963 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                abort: HTTP request error (incomplete response; expected 1 bytes got 3)
                (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ tail -8 error.log
                write(28 from 28) -> (32) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (30) \r\n
                write(6 from 6) -> (24) 1\\r\\n\x04\\r\\n (esc)
                write(9 from 9) -> (15) 4\r\nnone\r\n
                write(9 from 9) -> (6) 4\r\nHG20\r\n
                write(6 from 9) -> (0) 4\\r\\n\x00\x00\x00 (esc)
                write limit reached; closing socket
                write(27) -> 15\r\nInternal Server Error\r\n
                $ rm -f error.log
              Servers stops after bundle2 stream params header
                $ hg --config badserver.closeaftersendbytes=966 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                abort: HTTP request error (incomplete response)
                (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ tail -8 error.log
                write(28 from 28) -> (35) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (33) \r\n
                write(6 from 6) -> (27) 1\\r\\n\x04\\r\\n (esc)
                write(9 from 9) -> (18) 4\r\nnone\r\n
                write(9 from 9) -> (9) 4\r\nHG20\r\n
                write(9 from 9) -> (0) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write limit reached; closing socket
                write(27) -> 15\r\nInternal Server Error\r\n
                $ rm -f error.log
              Server stops sending after bundle2 part header length
                $ hg --config badserver.closeaftersendbytes=975 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                abort: HTTP request error (incomplete response)
                (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ tail -9 error.log
                write(28 from 28) -> (44) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (42) \r\n
                write(6 from 6) -> (36) 1\\r\\n\x04\\r\\n (esc)
                write(9 from 9) -> (27) 4\r\nnone\r\n
                write(9 from 9) -> (18) 4\r\nHG20\r\n
                write(9 from 9) -> (9) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (0) 4\\r\\n\x00\x00\x00)\\r\\n (esc)
                write limit reached; closing socket
                write(27) -> 15\r\nInternal Server Error\r\n
                $ rm -f error.log
              Server stops sending after bundle2 part header
                $ hg --config badserver.closeaftersendbytes=1022 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                adding changesets
                transaction abort!
                rollback completed
                abort: HTTP request error (incomplete response)
                (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ tail -10 error.log
                write(28 from 28) -> (91) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (89) \r\n
                write(6 from 6) -> (83) 1\\r\\n\x04\\r\\n (esc)
                write(9 from 9) -> (74) 4\r\nnone\r\n
                write(9 from 9) -> (65) 4\r\nHG20\r\n
                write(9 from 9) -> (56) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (47) 4\\r\\n\x00\x00\x00)\\r\\n (esc)
                write(47 from 47) -> (0) 29\\r\\n\x0bCHANGEGROUP\x00\x00\x00\x00\x01\x01\x07\x02	\x01version02nbchanges1\\r\\n (esc)
                write limit reached; closing socket
                write(27) -> 15\r\nInternal Server Error\r\n
                $ rm -f error.log
              Server stops after bundle2 part payload chunk size
                $ hg --config badserver.closeaftersendbytes=1031 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                adding changesets
                transaction abort!
                rollback completed
                abort: HTTP request error (incomplete response)
                (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ tail -11 error.log
                write(28 from 28) -> (100) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (98) \r\n
                write(6 from 6) -> (92) 1\\r\\n\x04\\r\\n (esc)
                write(9 from 9) -> (83) 4\r\nnone\r\n
                write(9 from 9) -> (74) 4\r\nHG20\r\n
                write(9 from 9) -> (65) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (56) 4\\r\\n\x00\x00\x00)\\r\\n (esc)
                write(47 from 47) -> (9) 29\\r\\n\x0bCHANGEGROUP\x00\x00\x00\x00\x01\x01\x07\x02	\x01version02nbchanges1\\r\\n (esc)
                write(9 from 9) -> (0) 4\\r\\n\x00\x00\x01\xd2\\r\\n (esc)
                write limit reached; closing socket
                write(27) -> 15\r\nInternal Server Error\r\n
                $ rm -f error.log
              Server stops sending in middle of bundle2 payload chunk
                $ hg --config badserver.closeaftersendbytes=1504 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                adding changesets
                transaction abort!
                rollback completed
                abort: HTTP request error (incomplete response)
                (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ tail -12 error.log
                write(28 from 28) -> (573) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (571) \r\n
                write(6 from 6) -> (565) 1\\r\\n\x04\\r\\n (esc)
                write(9 from 9) -> (556) 4\r\nnone\r\n
                write(9 from 9) -> (547) 4\r\nHG20\r\n
                write(9 from 9) -> (538) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (529) 4\\r\\n\x00\x00\x00)\\r\\n (esc)
                write(47 from 47) -> (482) 29\\r\\n\x0bCHANGEGROUP\x00\x00\x00\x00\x01\x01\x07\x02	\x01version02nbchanges1\\r\\n (esc)
                write(9 from 9) -> (473) 4\\r\\n\x00\x00\x01\xd2\\r\\n (esc)
                write(473 from 473) -> (0) 1d2\\r\\n\x00\x00\x00\xb2\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00>6a3df4de388f3c4f8e28f4f9a814299a3cbb5f50\\ntest\\n0 0\\nfoo\\n\\ninitial\x00\x00\x00\x00\x00\x00\x00\xa1j=\xf4\xde8\x8f<O\x8e(\xf4\xf9\xa8\x14)\x9a<\xbb_P\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00-foo\x00b80de5d138758541c5f05265ad144ab9fa86d1db\\n\x00\x00\x00\x00\x00\x00\x00\x07foo\x00\x00\x00h\xb8\\r\xe5\xd18u\x85A\xc5\xf0Re\xad\x14J\xb9\xfa\x86\xd1\xdb\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\\r\\n (esc)
                write limit reached; closing socket
                write(27) -> 15\r\nInternal Server Error\r\n
                $ rm -f error.log
              Server stops sending after 0 length payload chunk size
                $ hg --config badserver.closeaftersendbytes=1513 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                adding changesets
                adding manifests
                adding file changes
                added 1 changesets with 1 changes to 1 files
                transaction abort!
                rollback completed
                abort: HTTP request error (incomplete response)
                (this may be an intermittent network failure; if the error persists, consider contacting the network or server operator)
                [255]
                $ killdaemons.py $DAEMON_PIDS
                $ tail -13 error.log
                write(28 from 28) -> (582) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (580) \r\n
                write(6 from 6) -> (574) 1\\r\\n\x04\\r\\n (esc)
                write(9 from 9) -> (565) 4\r\nnone\r\n
                write(9 from 9) -> (556) 4\r\nHG20\r\n
                write(9 from 9) -> (547) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (538) 4\\r\\n\x00\x00\x00)\\r\\n (esc)
                write(47 from 47) -> (491) 29\\r\\n\x0bCHANGEGROUP\x00\x00\x00\x00\x01\x01\x07\x02	\x01version02nbchanges1\\r\\n (esc)
                write(9 from 9) -> (482) 4\\r\\n\x00\x00\x01\xd2\\r\\n (esc)
                write(473 from 473) -> (9) 1d2\\r\\n\x00\x00\x00\xb2\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00>6a3df4de388f3c4f8e28f4f9a814299a3cbb5f50\\ntest\\n0 0\\nfoo\\n\\ninitial\x00\x00\x00\x00\x00\x00\x00\xa1j=\xf4\xde8\x8f<O\x8e(\xf4\xf9\xa8\x14)\x9a<\xbb_P\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00-foo\x00b80de5d138758541c5f05265ad144ab9fa86d1db\\n\x00\x00\x00\x00\x00\x00\x00\x07foo\x00\x00\x00h\xb8\\r\xe5\xd18u\x85A\xc5\xf0Re\xad\x14J\xb9\xfa\x86\xd1\xdb\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (0) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write limit reached; closing socket
                write(27) -> 15\r\nInternal Server Error\r\n
                $ rm -f error.log
              Server stops sending after 0 part bundle part header (indicating end of bundle2 payload)
              This is before the 0 size chunked transfer part that signals end of HTTP response.
                $ hg --config badserver.closeaftersendbytes=1710 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                adding changesets
                adding manifests
                adding file changes
                added 1 changesets with 1 changes to 1 files
                updating to branch default
 files updated, 0 files merged, 0 files removed, 0 files unresolved
                $ killdaemons.py $DAEMON_PIDS
                $ tail -22 error.log
                write(28 from 28) -> (779) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (777) \r\n
                write(6 from 6) -> (771) 1\\r\\n\x04\\r\\n (esc)
                write(9 from 9) -> (762) 4\r\nnone\r\n
                write(9 from 9) -> (753) 4\r\nHG20\r\n
                write(9 from 9) -> (744) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (735) 4\\r\\n\x00\x00\x00)\\r\\n (esc)
                write(47 from 47) -> (688) 29\\r\\n\x0bCHANGEGROUP\x00\x00\x00\x00\x01\x01\x07\x02	\x01version02nbchanges1\\r\\n (esc)
                write(9 from 9) -> (679) 4\\r\\n\x00\x00\x01\xd2\\r\\n (esc)
                write(473 from 473) -> (206) 1d2\\r\\n\x00\x00\x00\xb2\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00>6a3df4de388f3c4f8e28f4f9a814299a3cbb5f50\\ntest\\n0 0\\nfoo\\n\\ninitial\x00\x00\x00\x00\x00\x00\x00\xa1j=\xf4\xde8\x8f<O\x8e(\xf4\xf9\xa8\x14)\x9a<\xbb_P\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00-foo\x00b80de5d138758541c5f05265ad144ab9fa86d1db\\n\x00\x00\x00\x00\x00\x00\x00\x07foo\x00\x00\x00h\xb8\\r\xe5\xd18u\x85A\xc5\xf0Re\xad\x14J\xb9\xfa\x86\xd1\xdb\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (197) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (188) 4\\r\\n\x00\x00\x00 \\r\\n (esc)
                write(38 from 38) -> (150) 20\\r\\n\x08LISTKEYS\x00\x00\x00\x01\x01\x00	\x06namespacephases\\r\\n (esc)
                write(9 from 9) -> (141) 4\\r\\n\x00\x00\x00:\\r\\n (esc)
                write(64 from 64) -> (77) 3a\r\n96ee1d7354c4ad7372047672c36a1f561e3a6a4c	1\npublishing	True\r\n
                write(9 from 9) -> (68) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (59) 4\\r\\n\x00\x00\x00#\\r\\n (esc)
                write(41 from 41) -> (18) 23\\r\\n\x08LISTKEYS\x00\x00\x00\x02\x01\x00		namespacebookmarks\\r\\n (esc)
                write(9 from 9) -> (9) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (0) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write limit reached; closing socket
                write(27) -> 15\r\nInternal Server Error\r\n
                $ rm -f error.log
                $ rm -rf clone
              Server sends a size 0 chunked-transfer size without terminating \r\n
                $ hg --config badserver.closeaftersendbytes=1713 serve -p $HGPORT -d --pid-file=hg.pid -E error.log
                $ cat hg.pid > $DAEMON_PIDS
                $ hg clone http://localhost:$HGPORT/ clone
                requesting all changes
                adding changesets
                adding manifests
                adding file changes
                added 1 changesets with 1 changes to 1 files
                updating to branch default
 files updated, 0 files merged, 0 files removed, 0 files unresolved
                $ killdaemons.py $DAEMON_PIDS
                $ tail -23 error.log
                write(28 from 28) -> (782) Transfer-Encoding: chunked\r\n
                write(2 from 2) -> (780) \r\n
                write(6 from 6) -> (774) 1\\r\\n\x04\\r\\n (esc)
                write(9 from 9) -> (765) 4\r\nnone\r\n
                write(9 from 9) -> (756) 4\r\nHG20\r\n
                write(9 from 9) -> (747) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (738) 4\\r\\n\x00\x00\x00)\\r\\n (esc)
                write(47 from 47) -> (691) 29\\r\\n\x0bCHANGEGROUP\x00\x00\x00\x00\x01\x01\x07\x02	\x01version02nbchanges1\\r\\n (esc)
                write(9 from 9) -> (682) 4\\r\\n\x00\x00\x01\xd2\\r\\n (esc)
                write(473 from 473) -> (209) 1d2\\r\\n\x00\x00\x00\xb2\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00>6a3df4de388f3c4f8e28f4f9a814299a3cbb5f50\\ntest\\n0 0\\nfoo\\n\\ninitial\x00\x00\x00\x00\x00\x00\x00\xa1j=\xf4\xde8\x8f<O\x8e(\xf4\xf9\xa8\x14)\x9a<\xbb_P\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00-foo\x00b80de5d138758541c5f05265ad144ab9fa86d1db\\n\x00\x00\x00\x00\x00\x00\x00\x07foo\x00\x00\x00h\xb8\\r\xe5\xd18u\x85A\xc5\xf0Re\xad\x14J\xb9\xfa\x86\xd1\xdb\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x96\xee\x1dsT\xc4\xadsr\x04vr\xc3j\x1fV\x1e:jL\x00\x00\x00\x00\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (200) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (191) 4\\r\\n\x00\x00\x00 \\r\\n (esc)
                write(38 from 38) -> (153) 20\\r\\n\x08LISTKEYS\x00\x00\x00\x01\x01\x00	\x06namespacephases\\r\\n (esc)
                write(9 from 9) -> (144) 4\\r\\n\x00\x00\x00:\\r\\n (esc)
                write(64 from 64) -> (80) 3a\r\n96ee1d7354c4ad7372047672c36a1f561e3a6a4c	1\npublishing	True\r\n
                write(9 from 9) -> (71) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (62) 4\\r\\n\x00\x00\x00#\\r\\n (esc)
                write(41 from 41) -> (21) 23\\r\\n\x08LISTKEYS\x00\x00\x00\x02\x01\x00		namespacebookmarks\\r\\n (esc)
                write(9 from 9) -> (12) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(9 from 9) -> (3) 4\\r\\n\x00\x00\x00\x00\\r\\n (esc)
                write(3 from 5) -> (0) 0\r\n
                write limit reached; closing socket
                write(27) -> 15\r\nInternal Server Error\r\n
                $ rm -f error.log
                $ rm -rf clone

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