AppPkg/Applications/Python: Add Python 2.7.2 sources since the release of Python 2.7.3 made them unavailable from the python.org web site.
These files are a subset of the python-2.7.2.tgz distribution from python.org. Changed files from PyMod-2.7.2 have been copied into the corresponding directories of this tree, replacing the original files in the distribution. Signed-off-by: daryl.mcdaniel@intel.com git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13197 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
655
AppPkg/Applications/Python/Python-2.7.2/Lib/asyncore.py
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655
AppPkg/Applications/Python/Python-2.7.2/Lib/asyncore.py
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@ -0,0 +1,655 @@
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# -*- Mode: Python -*-
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# Id: asyncore.py,v 2.51 2000/09/07 22:29:26 rushing Exp
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# Author: Sam Rushing <rushing@nightmare.com>
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# ======================================================================
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# Copyright 1996 by Sam Rushing
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#
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# All Rights Reserved
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||||
#
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# Permission to use, copy, modify, and distribute this software and
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# its documentation for any purpose and without fee is hereby
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# granted, provided that the above copyright notice appear in all
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# copies and that both that copyright notice and this permission
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# notice appear in supporting documentation, and that the name of Sam
|
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# Rushing not be used in advertising or publicity pertaining to
|
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# distribution of the software without specific, written prior
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# permission.
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#
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||||
# SAM RUSHING DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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# INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
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# NO EVENT SHALL SAM RUSHING BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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# OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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# ======================================================================
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"""Basic infrastructure for asynchronous socket service clients and servers.
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There are only two ways to have a program on a single processor do "more
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than one thing at a time". Multi-threaded programming is the simplest and
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most popular way to do it, but there is another very different technique,
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||||
that lets you have nearly all the advantages of multi-threading, without
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actually using multiple threads. it's really only practical if your program
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is largely I/O bound. If your program is CPU bound, then pre-emptive
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scheduled threads are probably what you really need. Network servers are
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rarely CPU-bound, however.
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If your operating system supports the select() system call in its I/O
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||||
library (and nearly all do), then you can use it to juggle multiple
|
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communication channels at once; doing other work while your I/O is taking
|
||||
place in the "background." Although this strategy can seem strange and
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complex, especially at first, it is in many ways easier to understand and
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||||
control than multi-threaded programming. The module documented here solves
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many of the difficult problems for you, making the task of building
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sophisticated high-performance network servers and clients a snap.
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"""
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import select
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import socket
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import sys
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import time
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import warnings
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import os
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from errno import EALREADY, EINPROGRESS, EWOULDBLOCK, ECONNRESET, EINVAL, \
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ENOTCONN, ESHUTDOWN, EINTR, EISCONN, EBADF, ECONNABORTED, EPIPE, EAGAIN, \
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errorcode
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_DISCONNECTED = frozenset((ECONNRESET, ENOTCONN, ESHUTDOWN, ECONNABORTED, EPIPE,
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EBADF))
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try:
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socket_map
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||||
except NameError:
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||||
socket_map = {}
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||||
|
||||
def _strerror(err):
|
||||
try:
|
||||
return os.strerror(err)
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||||
except (ValueError, OverflowError, NameError):
|
||||
if err in errorcode:
|
||||
return errorcode[err]
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return "Unknown error %s" %err
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|
||||
class ExitNow(Exception):
|
||||
pass
|
||||
|
||||
_reraised_exceptions = (ExitNow, KeyboardInterrupt, SystemExit)
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|
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def read(obj):
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try:
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obj.handle_read_event()
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except _reraised_exceptions:
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raise
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except:
|
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obj.handle_error()
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|
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def write(obj):
|
||||
try:
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obj.handle_write_event()
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except _reraised_exceptions:
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raise
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||||
except:
|
||||
obj.handle_error()
|
||||
|
||||
def _exception(obj):
|
||||
try:
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obj.handle_expt_event()
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except _reraised_exceptions:
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raise
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||||
except:
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||||
obj.handle_error()
|
||||
|
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def readwrite(obj, flags):
|
||||
try:
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if flags & select.POLLIN:
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obj.handle_read_event()
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if flags & select.POLLOUT:
|
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obj.handle_write_event()
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if flags & select.POLLPRI:
|
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obj.handle_expt_event()
|
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if flags & (select.POLLHUP | select.POLLERR | select.POLLNVAL):
|
||||
obj.handle_close()
|
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except socket.error, e:
|
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if e.args[0] not in _DISCONNECTED:
|
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obj.handle_error()
|
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else:
|
||||
obj.handle_close()
|
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except _reraised_exceptions:
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raise
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except:
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obj.handle_error()
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|
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def poll(timeout=0.0, map=None):
|
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if map is None:
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map = socket_map
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if map:
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r = []; w = []; e = []
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for fd, obj in map.items():
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is_r = obj.readable()
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is_w = obj.writable()
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if is_r:
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r.append(fd)
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if is_w:
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w.append(fd)
|
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if is_r or is_w:
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e.append(fd)
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if [] == r == w == e:
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time.sleep(timeout)
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return
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|
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try:
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r, w, e = select.select(r, w, e, timeout)
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except select.error, err:
|
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if err.args[0] != EINTR:
|
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raise
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||||
else:
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return
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|
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for fd in r:
|
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obj = map.get(fd)
|
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if obj is None:
|
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continue
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read(obj)
|
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|
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for fd in w:
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obj = map.get(fd)
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if obj is None:
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continue
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write(obj)
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|
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for fd in e:
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obj = map.get(fd)
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if obj is None:
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continue
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_exception(obj)
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|
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def poll2(timeout=0.0, map=None):
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# Use the poll() support added to the select module in Python 2.0
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if map is None:
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||||
map = socket_map
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||||
if timeout is not None:
|
||||
# timeout is in milliseconds
|
||||
timeout = int(timeout*1000)
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||||
pollster = select.poll()
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if map:
|
||||
for fd, obj in map.items():
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||||
flags = 0
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||||
if obj.readable():
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||||
flags |= select.POLLIN | select.POLLPRI
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||||
if obj.writable():
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flags |= select.POLLOUT
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||||
if flags:
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||||
# Only check for exceptions if object was either readable
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||||
# or writable.
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||||
flags |= select.POLLERR | select.POLLHUP | select.POLLNVAL
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||||
pollster.register(fd, flags)
|
||||
try:
|
||||
r = pollster.poll(timeout)
|
||||
except select.error, err:
|
||||
if err.args[0] != EINTR:
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||||
raise
|
||||
r = []
|
||||
for fd, flags in r:
|
||||
obj = map.get(fd)
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||||
if obj is None:
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||||
continue
|
||||
readwrite(obj, flags)
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||||
|
||||
poll3 = poll2 # Alias for backward compatibility
|
||||
|
||||
def loop(timeout=30.0, use_poll=False, map=None, count=None):
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||||
if map is None:
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||||
map = socket_map
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||||
|
||||
if use_poll and hasattr(select, 'poll'):
|
||||
poll_fun = poll2
|
||||
else:
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||||
poll_fun = poll
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||||
|
||||
if count is None:
|
||||
while map:
|
||||
poll_fun(timeout, map)
|
||||
|
||||
else:
|
||||
while map and count > 0:
|
||||
poll_fun(timeout, map)
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||||
count = count - 1
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||||
|
||||
class dispatcher:
|
||||
|
||||
debug = False
|
||||
connected = False
|
||||
accepting = False
|
||||
closing = False
|
||||
addr = None
|
||||
ignore_log_types = frozenset(['warning'])
|
||||
|
||||
def __init__(self, sock=None, map=None):
|
||||
if map is None:
|
||||
self._map = socket_map
|
||||
else:
|
||||
self._map = map
|
||||
|
||||
self._fileno = None
|
||||
|
||||
if sock:
|
||||
# Set to nonblocking just to make sure for cases where we
|
||||
# get a socket from a blocking source.
|
||||
sock.setblocking(0)
|
||||
self.set_socket(sock, map)
|
||||
self.connected = True
|
||||
# The constructor no longer requires that the socket
|
||||
# passed be connected.
|
||||
try:
|
||||
self.addr = sock.getpeername()
|
||||
except socket.error, err:
|
||||
if err.args[0] == ENOTCONN:
|
||||
# To handle the case where we got an unconnected
|
||||
# socket.
|
||||
self.connected = False
|
||||
else:
|
||||
# The socket is broken in some unknown way, alert
|
||||
# the user and remove it from the map (to prevent
|
||||
# polling of broken sockets).
|
||||
self.del_channel(map)
|
||||
raise
|
||||
else:
|
||||
self.socket = None
|
||||
|
||||
def __repr__(self):
|
||||
status = [self.__class__.__module__+"."+self.__class__.__name__]
|
||||
if self.accepting and self.addr:
|
||||
status.append('listening')
|
||||
elif self.connected:
|
||||
status.append('connected')
|
||||
if self.addr is not None:
|
||||
try:
|
||||
status.append('%s:%d' % self.addr)
|
||||
except TypeError:
|
||||
status.append(repr(self.addr))
|
||||
return '<%s at %#x>' % (' '.join(status), id(self))
|
||||
|
||||
__str__ = __repr__
|
||||
|
||||
def add_channel(self, map=None):
|
||||
#self.log_info('adding channel %s' % self)
|
||||
if map is None:
|
||||
map = self._map
|
||||
map[self._fileno] = self
|
||||
|
||||
def del_channel(self, map=None):
|
||||
fd = self._fileno
|
||||
if map is None:
|
||||
map = self._map
|
||||
if fd in map:
|
||||
#self.log_info('closing channel %d:%s' % (fd, self))
|
||||
del map[fd]
|
||||
self._fileno = None
|
||||
|
||||
def create_socket(self, family, type):
|
||||
self.family_and_type = family, type
|
||||
sock = socket.socket(family, type)
|
||||
sock.setblocking(0)
|
||||
self.set_socket(sock)
|
||||
|
||||
def set_socket(self, sock, map=None):
|
||||
self.socket = sock
|
||||
## self.__dict__['socket'] = sock
|
||||
self._fileno = sock.fileno()
|
||||
self.add_channel(map)
|
||||
|
||||
def set_reuse_addr(self):
|
||||
# try to re-use a server port if possible
|
||||
try:
|
||||
self.socket.setsockopt(
|
||||
socket.SOL_SOCKET, socket.SO_REUSEADDR,
|
||||
self.socket.getsockopt(socket.SOL_SOCKET,
|
||||
socket.SO_REUSEADDR) | 1
|
||||
)
|
||||
except socket.error:
|
||||
pass
|
||||
|
||||
# ==================================================
|
||||
# predicates for select()
|
||||
# these are used as filters for the lists of sockets
|
||||
# to pass to select().
|
||||
# ==================================================
|
||||
|
||||
def readable(self):
|
||||
return True
|
||||
|
||||
def writable(self):
|
||||
return True
|
||||
|
||||
# ==================================================
|
||||
# socket object methods.
|
||||
# ==================================================
|
||||
|
||||
def listen(self, num):
|
||||
self.accepting = True
|
||||
if os.name == 'nt' and num > 5:
|
||||
num = 5
|
||||
return self.socket.listen(num)
|
||||
|
||||
def bind(self, addr):
|
||||
self.addr = addr
|
||||
return self.socket.bind(addr)
|
||||
|
||||
def connect(self, address):
|
||||
self.connected = False
|
||||
err = self.socket.connect_ex(address)
|
||||
if err in (EINPROGRESS, EALREADY, EWOULDBLOCK) \
|
||||
or err == EINVAL and os.name in ('nt', 'ce'):
|
||||
return
|
||||
if err in (0, EISCONN):
|
||||
self.addr = address
|
||||
self.handle_connect_event()
|
||||
else:
|
||||
raise socket.error(err, errorcode[err])
|
||||
|
||||
def accept(self):
|
||||
# XXX can return either an address pair or None
|
||||
try:
|
||||
conn, addr = self.socket.accept()
|
||||
except TypeError:
|
||||
return None
|
||||
except socket.error as why:
|
||||
if why.args[0] in (EWOULDBLOCK, ECONNABORTED, EAGAIN):
|
||||
return None
|
||||
else:
|
||||
raise
|
||||
else:
|
||||
return conn, addr
|
||||
|
||||
def send(self, data):
|
||||
try:
|
||||
result = self.socket.send(data)
|
||||
return result
|
||||
except socket.error, why:
|
||||
if why.args[0] == EWOULDBLOCK:
|
||||
return 0
|
||||
elif why.args[0] in _DISCONNECTED:
|
||||
self.handle_close()
|
||||
return 0
|
||||
else:
|
||||
raise
|
||||
|
||||
def recv(self, buffer_size):
|
||||
try:
|
||||
data = self.socket.recv(buffer_size)
|
||||
if not data:
|
||||
# a closed connection is indicated by signaling
|
||||
# a read condition, and having recv() return 0.
|
||||
self.handle_close()
|
||||
return ''
|
||||
else:
|
||||
return data
|
||||
except socket.error, why:
|
||||
# winsock sometimes throws ENOTCONN
|
||||
if why.args[0] in _DISCONNECTED:
|
||||
self.handle_close()
|
||||
return ''
|
||||
else:
|
||||
raise
|
||||
|
||||
def close(self):
|
||||
self.connected = False
|
||||
self.accepting = False
|
||||
self.del_channel()
|
||||
try:
|
||||
self.socket.close()
|
||||
except socket.error, why:
|
||||
if why.args[0] not in (ENOTCONN, EBADF):
|
||||
raise
|
||||
|
||||
# cheap inheritance, used to pass all other attribute
|
||||
# references to the underlying socket object.
|
||||
def __getattr__(self, attr):
|
||||
try:
|
||||
retattr = getattr(self.socket, attr)
|
||||
except AttributeError:
|
||||
raise AttributeError("%s instance has no attribute '%s'"
|
||||
%(self.__class__.__name__, attr))
|
||||
else:
|
||||
msg = "%(me)s.%(attr)s is deprecated. Use %(me)s.socket.%(attr)s " \
|
||||
"instead." % {'me': self.__class__.__name__, 'attr':attr}
|
||||
warnings.warn(msg, DeprecationWarning, stacklevel=2)
|
||||
return retattr
|
||||
|
||||
# log and log_info may be overridden to provide more sophisticated
|
||||
# logging and warning methods. In general, log is for 'hit' logging
|
||||
# and 'log_info' is for informational, warning and error logging.
|
||||
|
||||
def log(self, message):
|
||||
sys.stderr.write('log: %s\n' % str(message))
|
||||
|
||||
def log_info(self, message, type='info'):
|
||||
if type not in self.ignore_log_types:
|
||||
print '%s: %s' % (type, message)
|
||||
|
||||
def handle_read_event(self):
|
||||
if self.accepting:
|
||||
# accepting sockets are never connected, they "spawn" new
|
||||
# sockets that are connected
|
||||
self.handle_accept()
|
||||
elif not self.connected:
|
||||
self.handle_connect_event()
|
||||
self.handle_read()
|
||||
else:
|
||||
self.handle_read()
|
||||
|
||||
def handle_connect_event(self):
|
||||
err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
|
||||
if err != 0:
|
||||
raise socket.error(err, _strerror(err))
|
||||
self.handle_connect()
|
||||
self.connected = True
|
||||
|
||||
def handle_write_event(self):
|
||||
if self.accepting:
|
||||
# Accepting sockets shouldn't get a write event.
|
||||
# We will pretend it didn't happen.
|
||||
return
|
||||
|
||||
if not self.connected:
|
||||
#check for errors
|
||||
err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
|
||||
if err != 0:
|
||||
raise socket.error(err, _strerror(err))
|
||||
|
||||
self.handle_connect_event()
|
||||
self.handle_write()
|
||||
|
||||
def handle_expt_event(self):
|
||||
# handle_expt_event() is called if there might be an error on the
|
||||
# socket, or if there is OOB data
|
||||
# check for the error condition first
|
||||
err = self.socket.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
|
||||
if err != 0:
|
||||
# we can get here when select.select() says that there is an
|
||||
# exceptional condition on the socket
|
||||
# since there is an error, we'll go ahead and close the socket
|
||||
# like we would in a subclassed handle_read() that received no
|
||||
# data
|
||||
self.handle_close()
|
||||
else:
|
||||
self.handle_expt()
|
||||
|
||||
def handle_error(self):
|
||||
nil, t, v, tbinfo = compact_traceback()
|
||||
|
||||
# sometimes a user repr method will crash.
|
||||
try:
|
||||
self_repr = repr(self)
|
||||
except:
|
||||
self_repr = '<__repr__(self) failed for object at %0x>' % id(self)
|
||||
|
||||
self.log_info(
|
||||
'uncaptured python exception, closing channel %s (%s:%s %s)' % (
|
||||
self_repr,
|
||||
t,
|
||||
v,
|
||||
tbinfo
|
||||
),
|
||||
'error'
|
||||
)
|
||||
self.handle_close()
|
||||
|
||||
def handle_expt(self):
|
||||
self.log_info('unhandled incoming priority event', 'warning')
|
||||
|
||||
def handle_read(self):
|
||||
self.log_info('unhandled read event', 'warning')
|
||||
|
||||
def handle_write(self):
|
||||
self.log_info('unhandled write event', 'warning')
|
||||
|
||||
def handle_connect(self):
|
||||
self.log_info('unhandled connect event', 'warning')
|
||||
|
||||
def handle_accept(self):
|
||||
self.log_info('unhandled accept event', 'warning')
|
||||
|
||||
def handle_close(self):
|
||||
self.log_info('unhandled close event', 'warning')
|
||||
self.close()
|
||||
|
||||
# ---------------------------------------------------------------------------
|
||||
# adds simple buffered output capability, useful for simple clients.
|
||||
# [for more sophisticated usage use asynchat.async_chat]
|
||||
# ---------------------------------------------------------------------------
|
||||
|
||||
class dispatcher_with_send(dispatcher):
|
||||
|
||||
def __init__(self, sock=None, map=None):
|
||||
dispatcher.__init__(self, sock, map)
|
||||
self.out_buffer = ''
|
||||
|
||||
def initiate_send(self):
|
||||
num_sent = 0
|
||||
num_sent = dispatcher.send(self, self.out_buffer[:512])
|
||||
self.out_buffer = self.out_buffer[num_sent:]
|
||||
|
||||
def handle_write(self):
|
||||
self.initiate_send()
|
||||
|
||||
def writable(self):
|
||||
return (not self.connected) or len(self.out_buffer)
|
||||
|
||||
def send(self, data):
|
||||
if self.debug:
|
||||
self.log_info('sending %s' % repr(data))
|
||||
self.out_buffer = self.out_buffer + data
|
||||
self.initiate_send()
|
||||
|
||||
# ---------------------------------------------------------------------------
|
||||
# used for debugging.
|
||||
# ---------------------------------------------------------------------------
|
||||
|
||||
def compact_traceback():
|
||||
t, v, tb = sys.exc_info()
|
||||
tbinfo = []
|
||||
if not tb: # Must have a traceback
|
||||
raise AssertionError("traceback does not exist")
|
||||
while tb:
|
||||
tbinfo.append((
|
||||
tb.tb_frame.f_code.co_filename,
|
||||
tb.tb_frame.f_code.co_name,
|
||||
str(tb.tb_lineno)
|
||||
))
|
||||
tb = tb.tb_next
|
||||
|
||||
# just to be safe
|
||||
del tb
|
||||
|
||||
file, function, line = tbinfo[-1]
|
||||
info = ' '.join(['[%s|%s|%s]' % x for x in tbinfo])
|
||||
return (file, function, line), t, v, info
|
||||
|
||||
def close_all(map=None, ignore_all=False):
|
||||
if map is None:
|
||||
map = socket_map
|
||||
for x in map.values():
|
||||
try:
|
||||
x.close()
|
||||
except OSError, x:
|
||||
if x.args[0] == EBADF:
|
||||
pass
|
||||
elif not ignore_all:
|
||||
raise
|
||||
except _reraised_exceptions:
|
||||
raise
|
||||
except:
|
||||
if not ignore_all:
|
||||
raise
|
||||
map.clear()
|
||||
|
||||
# Asynchronous File I/O:
|
||||
#
|
||||
# After a little research (reading man pages on various unixen, and
|
||||
# digging through the linux kernel), I've determined that select()
|
||||
# isn't meant for doing asynchronous file i/o.
|
||||
# Heartening, though - reading linux/mm/filemap.c shows that linux
|
||||
# supports asynchronous read-ahead. So _MOST_ of the time, the data
|
||||
# will be sitting in memory for us already when we go to read it.
|
||||
#
|
||||
# What other OS's (besides NT) support async file i/o? [VMS?]
|
||||
#
|
||||
# Regardless, this is useful for pipes, and stdin/stdout...
|
||||
|
||||
if os.name == 'posix':
|
||||
import fcntl
|
||||
|
||||
class file_wrapper:
|
||||
# Here we override just enough to make a file
|
||||
# look like a socket for the purposes of asyncore.
|
||||
# The passed fd is automatically os.dup()'d
|
||||
|
||||
def __init__(self, fd):
|
||||
self.fd = os.dup(fd)
|
||||
|
||||
def recv(self, *args):
|
||||
return os.read(self.fd, *args)
|
||||
|
||||
def send(self, *args):
|
||||
return os.write(self.fd, *args)
|
||||
|
||||
def getsockopt(self, level, optname, buflen=None):
|
||||
if (level == socket.SOL_SOCKET and
|
||||
optname == socket.SO_ERROR and
|
||||
not buflen):
|
||||
return 0
|
||||
raise NotImplementedError("Only asyncore specific behaviour "
|
||||
"implemented.")
|
||||
|
||||
read = recv
|
||||
write = send
|
||||
|
||||
def close(self):
|
||||
os.close(self.fd)
|
||||
|
||||
def fileno(self):
|
||||
return self.fd
|
||||
|
||||
class file_dispatcher(dispatcher):
|
||||
|
||||
def __init__(self, fd, map=None):
|
||||
dispatcher.__init__(self, None, map)
|
||||
self.connected = True
|
||||
try:
|
||||
fd = fd.fileno()
|
||||
except AttributeError:
|
||||
pass
|
||||
self.set_file(fd)
|
||||
# set it to non-blocking mode
|
||||
flags = fcntl.fcntl(fd, fcntl.F_GETFL, 0)
|
||||
flags = flags | os.O_NONBLOCK
|
||||
fcntl.fcntl(fd, fcntl.F_SETFL, flags)
|
||||
|
||||
def set_file(self, fd):
|
||||
self.socket = file_wrapper(fd)
|
||||
self._fileno = self.socket.fileno()
|
||||
self.add_channel()
|
Reference in New Issue
Block a user