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socket.pyc
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Python Compiled Bytecode
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2014-12-31
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# Source Generated with Decompyle++
# File: in.pyc (Python 2.7)
"""This module provides socket operations and some related functions.
On Unix, it supports IP (Internet Protocol) and Unix domain sockets.
On other systems, it only supports IP. Functions specific for a
socket are available as methods of the socket object.
Functions:
socket() -- create a new socket object
socketpair() -- create a pair of new socket objects [*]
fromfd() -- create a socket object from an open file descriptor [*]
gethostname() -- return the current hostname
gethostbyname() -- map a hostname to its IP number
gethostbyaddr() -- map an IP number or hostname to DNS info
getservbyname() -- map a service name and a protocol name to a port number
getprotobyname() -- map a protocol name (e.g. 'tcp') to a number
ntohs(), ntohl() -- convert 16, 32 bit int from network to host byte order
htons(), htonl() -- convert 16, 32 bit int from host to network byte order
inet_aton() -- convert IP addr string (123.45.67.89) to 32-bit packed format
inet_ntoa() -- convert 32-bit packed format IP to string (123.45.67.89)
ssl() -- secure socket layer support (only available if configured)
socket.getdefaulttimeout() -- get the default timeout value
socket.setdefaulttimeout() -- set the default timeout value
create_connection() -- connects to an address, with an optional timeout and
optional source address.
[*] not available on all platforms!
Special objects:
SocketType -- type object for socket objects
error -- exception raised for I/O errors
has_ipv6 -- boolean value indicating if IPv6 is supported
Integer constants:
AF_INET, AF_UNIX -- socket domains (first argument to socket() call)
SOCK_STREAM, SOCK_DGRAM, SOCK_RAW -- socket types (second argument)
Many other constants may be defined; these may be used in calls to
the setsockopt() and getsockopt() methods.
"""
import _socket
from _socket import *
from functools import partial
from types import MethodType
try:
import _ssl
except ImportError:
pass
def ssl(sock, keyfile = None, certfile = None):
import ssl as _realssl
warnings.warn('socket.ssl() is deprecated. Use ssl.wrap_socket() instead.', DeprecationWarning, stacklevel = 2)
return _realssl.sslwrap_simple(sock, keyfile, certfile)
from _ssl import SSLError as sslerror
from _ssl import RAND_add, RAND_egd, RAND_status, SSL_ERROR_ZERO_RETURN, SSL_ERROR_WANT_READ, SSL_ERROR_WANT_WRITE, SSL_ERROR_WANT_X509_LOOKUP, SSL_ERROR_SYSCALL, SSL_ERROR_SSL, SSL_ERROR_WANT_CONNECT, SSL_ERROR_EOF, SSL_ERROR_INVALID_ERROR_CODE
import os
import sys
import warnings
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
try:
import errno
except ImportError:
errno = None
EBADF = getattr(errno, 'EBADF', 9)
EINTR = getattr(errno, 'EINTR', 4)
__all__ = [
'getfqdn',
'create_connection']
__all__.extend(os._get_exports_list(_socket))
_realsocket = socket
if sys.platform.lower().startswith('win'):
errorTab = { }
errorTab[10004] = 'The operation was interrupted.'
errorTab[10009] = 'A bad file handle was passed.'
errorTab[10013] = 'Permission denied.'
errorTab[10014] = 'A fault occurred on the network??'
errorTab[10022] = 'An invalid operation was attempted.'
errorTab[10035] = 'The socket operation would block'
errorTab[10036] = 'A blocking operation is already in progress.'
errorTab[10048] = 'The network address is in use.'
errorTab[10054] = 'The connection has been reset.'
errorTab[10058] = 'The network has been shut down.'
errorTab[10060] = 'The operation timed out.'
errorTab[10061] = 'Connection refused.'
errorTab[10063] = 'The name is too long.'
errorTab[10064] = 'The host is down.'
errorTab[10065] = 'The host is unreachable.'
__all__.append('errorTab')
def getfqdn(name = ''):
'''Get fully qualified domain name from name.
An empty argument is interpreted as meaning the local host.
First the hostname returned by gethostbyaddr() is checked, then
possibly existing aliases. In case no FQDN is available, hostname
from gethostname() is returned.
'''
name = name.strip()
if not name or name == '0.0.0.0':
name = gethostname()
try:
(hostname, aliases, ipaddrs) = gethostbyaddr(name)
except error:
pass
aliases.insert(0, hostname)
for name in aliases:
if '.' in name:
break
continue
name = hostname
return name
_socketmethods = ('bind', 'connect', 'connect_ex', 'fileno', 'listen', 'getpeername', 'getsockname', 'getsockopt', 'setsockopt', 'sendall', 'setblocking', 'settimeout', 'gettimeout', 'shutdown')
if os.name == 'nt':
_socketmethods = _socketmethods + ('ioctl',)
if sys.platform == 'riscos':
_socketmethods = _socketmethods + ('sleeptaskw',)
_delegate_methods = ('recv', 'recvfrom', 'recv_into', 'recvfrom_into', 'send', 'sendto')
class _closedsocket(object):
__slots__ = []
def _dummy(*args):
raise error(EBADF, 'Bad file descriptor')
send = recv = recv_into = sendto = recvfrom = recvfrom_into = _dummy
__getattr__ = _dummy
class _socketobject(object):
__doc__ = _realsocket.__doc__
__slots__ = [
'_sock',
'__weakref__'] + list(_delegate_methods)
def __init__(self, family = AF_INET, type = SOCK_STREAM, proto = 0, _sock = None):
if _sock is None:
_sock = _realsocket(family, type, proto)
self._sock = _sock
for method in _delegate_methods:
setattr(self, method, getattr(_sock, method))
def close(self, _closedsocket = _closedsocket, _delegate_methods = _delegate_methods, setattr = setattr):
self._sock = _closedsocket()
dummy = self._sock._dummy
for method in _delegate_methods:
setattr(self, method, dummy)
close.__doc__ = _realsocket.close.__doc__
def accept(self):
(sock, addr) = self._sock.accept()
return (_socketobject(_sock = sock), addr)
accept.__doc__ = _realsocket.accept.__doc__
def dup(self):
'''dup() -> socket object
Return a new socket object connected to the same system resource.'''
return _socketobject(_sock = self._sock)
def makefile(self, mode = 'r', bufsize = -1):
'''makefile([mode[, bufsize]]) -> file object
Return a regular file object corresponding to the socket. The mode
and bufsize arguments are as for the built-in open() function.'''
return _fileobject(self._sock, mode, bufsize)
family = property((lambda self: self._sock.family), doc = 'the socket family')
type = property((lambda self: self._sock.type), doc = 'the socket type')
proto = property((lambda self: self._sock.proto), doc = 'the socket protocol')
def meth(name, self, *args):
return getattr(self._sock, name)(*args)
for _m in _socketmethods:
p = partial(meth, _m)
p.__name__ = _m
p.__doc__ = getattr(_realsocket, _m).__doc__
m = MethodType(p, None, _socketobject)
setattr(_socketobject, _m, m)
socket = SocketType = _socketobject
class _fileobject(object):
'''Faux file object attached to a socket object.'''
default_bufsize = 8192
name = '<socket>'
__slots__ = [
'mode',
'bufsize',
'softspace',
'_sock',
'_rbufsize',
'_wbufsize',
'_rbuf',
'_wbuf',
'_wbuf_len',
'_close']
def __init__(self, sock, mode = 'rb', bufsize = -1, close = False):
self._sock = sock
self.mode = mode
if bufsize < 0:
bufsize = self.default_bufsize
self.bufsize = bufsize
self.softspace = False
if bufsize == 0:
self._rbufsize = 1
elif bufsize == 1:
self._rbufsize = self.default_bufsize
else:
self._rbufsize = bufsize
self._wbufsize = bufsize
self._rbuf = StringIO()
self._wbuf = []
self._wbuf_len = 0
self._close = close
def _getclosed(self):
return self._sock is None
closed = property(_getclosed, doc = 'True if the file is closed')
def close(self):
try:
if self._sock:
self.flush()
finally:
if self._close:
self._sock.close()
self._sock = None
def __del__(self):
try:
self.close()
except:
pass
def flush(self):
if self._wbuf:
data = ''.join(self._wbuf)
self._wbuf = []
self._wbuf_len = 0
buffer_size = max(self._rbufsize, self.default_bufsize)
data_size = len(data)
write_offset = 0
view = memoryview(data)
try:
while write_offset < data_size:
self._sock.sendall(view[write_offset:write_offset + buffer_size])
write_offset += buffer_size
finally:
if write_offset < data_size:
remainder = data[write_offset:]
del view
del data
self._wbuf.append(remainder)
self._wbuf_len = len(remainder)
def fileno(self):
return self._sock.fileno()
def write(self, data):
data = str(data)
if not data:
return None
None._wbuf.append(data)
self._wbuf_len += len(data)
if not self._wbufsize == 0:
if (self._wbufsize == 1 or '\n' in data or self._wbufsize > 1) and self._wbuf_len >= self._wbufsize:
self.flush()
return None
def writelines(self, list):
lines = filter(None, map(str, list))
self._wbuf_len += sum(map(len, lines))
self._wbuf.extend(lines)
if self._wbufsize <= 1 or self._wbuf_len >= self._wbufsize:
self.flush()
def read(self, size = -1):
rbufsize = max(self._rbufsize, self.default_bufsize)
buf = self._rbuf
buf.seek(0, 2)
if size < 0:
self._rbuf = StringIO()
while True:
try:
data = self._sock.recv(rbufsize)
except error:
e = None
if e.args[0] == EINTR:
continue
raise
if not data:
break
buf.write(data)
return buf.getvalue()
buf_len = None.tell()
if buf_len >= size:
buf.seek(0)
rv = buf.read(size)
self._rbuf = StringIO()
self._rbuf.write(buf.read())
return rv
self._rbuf = None()
while True:
left = size - buf_len
try:
data = self._sock.recv(left)
except error:
e = None
if e.args[0] == EINTR:
continue
raise
if not data:
break
n = len(data)
if n == size and not buf_len:
return data
if None == left:
buf.write(data)
del data
break
if not n <= left:
raise AssertionError('recv(%d) returned %d bytes' % (left, n))
None.write(data)
buf_len += n
del data
return buf.getvalue()
def readline(self, size = -1):
buf = self._rbuf
buf.seek(0, 2)
if buf.tell() > 0:
buf.seek(0)
bline = buf.readline(size)
if bline.endswith('\n') or len(bline) == size:
self._rbuf = StringIO()
self._rbuf.write(buf.read())
return bline
if size < 0:
if self._rbufsize <= 1:
buf.seek(0)
buffers = [
buf.read()]
self._rbuf = StringIO()
data = None
recv = self._sock.recv
while True:
try:
while data != '\n':
data = recv(1)
if not data:
break
buffers.append(data)
except error:
e = None
if e.args[0] == EINTR:
continue
raise
break
return ''.join(buffers)
None.seek(0, 2)
self._rbuf = StringIO()
while True:
try:
data = self._sock.recv(self._rbufsize)
except error:
e = None
if e.args[0] == EINTR:
continue
raise
if not data:
break
nl = data.find('\n')
if nl >= 0:
nl += 1
buf.write(data[:nl])
self._rbuf.write(data[nl:])
del data
break
buf.write(data)
return buf.getvalue()
None.seek(0, 2)
buf_len = buf.tell()
if buf_len >= size:
buf.seek(0)
rv = buf.read(size)
self._rbuf = StringIO()
self._rbuf.write(buf.read())
return rv
self._rbuf = None()
while True:
try:
data = self._sock.recv(self._rbufsize)
except error:
e = None
if e.args[0] == EINTR:
continue
raise
if not data:
break
left = size - buf_len
nl = data.find('\n', 0, left)
if nl >= 0:
nl += 1
self._rbuf.write(data[nl:])
if buf_len:
buf.write(data[:nl])
break
else:
return data[:nl]
n = len(data)
if n == size and not buf_len:
return data
if None >= left:
buf.write(data[:left])
self._rbuf.write(data[left:])
break
buf.write(data)
buf_len += n
return buf.getvalue()
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
continue
return list
def __iter__(self):
return self
def next(self):
line = self.readline()
if not line:
raise StopIteration
return line
_GLOBAL_DEFAULT_TIMEOUT = object()
def create_connection(address, timeout = _GLOBAL_DEFAULT_TIMEOUT, source_address = None):
"""Connect to *address* and return the socket object.
Convenience function. Connect to *address* (a 2-tuple ``(host,
port)``) and return the socket object. Passing the optional
*timeout* parameter will set the timeout on the socket instance
before attempting to connect. If no *timeout* is supplied, the
global default timeout setting returned by :func:`getdefaulttimeout`
is used. If *source_address* is set it must be a tuple of (host, port)
for the socket to bind as a source address before making the connection.
An host of '' or port 0 tells the OS to use the default.
"""
(host, port) = address
err = None
for res in getaddrinfo(host, port, 0, SOCK_STREAM):
(af, socktype, proto, canonname, sa) = res
sock = None
try:
sock = socket(af, socktype, proto)
if timeout is not _GLOBAL_DEFAULT_TIMEOUT:
sock.settimeout(timeout)
if source_address:
sock.bind(source_address)
sock.connect(sa)
return sock
continue
except error:
_ = None
err = _
if sock is not None:
sock.close()
if err is not None:
raise err
raise error('getaddrinfo returns an empty list')