cpython-lru_cache-weakref: Lib/socket.py annotate

annotate Lib/socket.py @ 25838:8540887bcec6 2.2

Backport of 2.183: Fix memory leak in add_subclass() found by NealN with valgrind.

author	Guido van Rossum <guido@python.org>
date	Fri, 18 Oct 2002 13:42:21 +0000
parents	2faa23facef7
children	16288b054fc3

rev	line source
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	1 # Wrapper module for _socket, providing some additional facilities
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	2 # implemented in Python.
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	3
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	4 """\
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	5 This module provides socket operations and some related functions.
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	6 On Unix, it supports IP (Internet Protocol) and Unix domain sockets.
15872 3685ef2a55a4 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 14935 diff changeset	7 On other systems, it only supports IP. Functions specific for a
14935 13488539f02b Mention in the module's doc string that other functions of the socket API Martin v. Löwis <martin@v.loewis.de> parents: 14682 diff changeset	8 socket are available as methods of the socket object.
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	9
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	10 Functions:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	11
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	12 socket() -- create a new socket object
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	13 fromfd() -- create a socket object from an open file descriptor [*]
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	14 gethostname() -- return the current hostname
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	15 gethostbyname() -- map a hostname to its IP number
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	16 gethostbyaddr() -- map an IP number or hostname to DNS info
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	17 getservbyname() -- map a service name and a protocol name to a port number
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	18 getprotobyname() -- mape a protocol name (e.g. 'tcp') to a number
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	19 ntohs(), ntohl() -- convert 16, 32 bit int from network to host byte order
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	20 htons(), htonl() -- convert 16, 32 bit int from host to network byte order
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	21 inet_aton() -- convert IP addr string (123.45.67.89) to 32-bit packed format
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	22 inet_ntoa() -- convert 32-bit packed format IP to string (123.45.67.89)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	23 ssl() -- secure socket layer support (only available if configured)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	24
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	25 [*] not available on all platforms!
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	26
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	27 Special objects:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	28
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	29 SocketType -- type object for socket objects
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	30 error -- exception raised for I/O errors
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	31
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	32 Integer constants:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	33
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	34 AF_INET, AF_UNIX -- socket domains (first argument to socket() call)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	35 SOCK_STREAM, SOCK_DGRAM, SOCK_RAW -- socket types (second argument)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	36
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	37 Many other constants may be defined; these may be used in calls to
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	38 the setsockopt() and getsockopt() methods.
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	39 """
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	40
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	41 from _socket import *
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	42
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	43 import os, sys
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	44
16613 f68dbffff927 bunch more __all__ lists Skip Montanaro <skip@pobox.com> parents: 15872 diff changeset	45 __all__ = ["getfqdn"]
f68dbffff927 bunch more __all__ lists Skip Montanaro <skip@pobox.com> parents: 15872 diff changeset	46 import _socket
f68dbffff927 bunch more __all__ lists Skip Montanaro <skip@pobox.com> parents: 15872 diff changeset	47 __all__.extend(os._get_exports_list(_socket))
f68dbffff927 bunch more __all__ lists Skip Montanaro <skip@pobox.com> parents: 15872 diff changeset	48
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	49 if (sys.platform.lower().startswith("win")
16949 09ba15ee1961 RISCOS changes by dschwertberger. Guido van Rossum <guido@python.org> parents: 16613 diff changeset	50 or (hasattr(os, 'uname') and os.uname()[0] == "BeOS")
20654 edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 19372 diff changeset	51 or (sys.platform=="riscos")):
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	52
17156 1be0d1c57834 Add a wrapper function for ssl() on Windows. Inspired by SF patch Guido van Rossum <guido@python.org> parents: 17071 diff changeset	53 _realsocketcall = _socket.socket
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	54
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	55 def socket(family, type, proto=0):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	56 return _socketobject(_realsocketcall(family, type, proto))
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	57
17156 1be0d1c57834 Add a wrapper function for ssl() on Windows. Inspired by SF patch Guido van Rossum <guido@python.org> parents: 17071 diff changeset	58 try:
1be0d1c57834 Add a wrapper function for ssl() on Windows. Inspired by SF patch Guido van Rossum <guido@python.org> parents: 17071 diff changeset	59 _realsslcall = _socket.ssl
1be0d1c57834 Add a wrapper function for ssl() on Windows. Inspired by SF patch Guido van Rossum <guido@python.org> parents: 17071 diff changeset	60 except AttributeError:
1be0d1c57834 Add a wrapper function for ssl() on Windows. Inspired by SF patch Guido van Rossum <guido@python.org> parents: 17071 diff changeset	61 pass # No ssl
1be0d1c57834 Add a wrapper function for ssl() on Windows. Inspired by SF patch Guido van Rossum <guido@python.org> parents: 17071 diff changeset	62 else:
1be0d1c57834 Add a wrapper function for ssl() on Windows. Inspired by SF patch Guido van Rossum <guido@python.org> parents: 17071 diff changeset	63 def ssl(sock, keyfile=None, certfile=None):
1be0d1c57834 Add a wrapper function for ssl() on Windows. Inspired by SF patch Guido van Rossum <guido@python.org> parents: 17071 diff changeset	64 if hasattr(sock, "_sock"):
1be0d1c57834 Add a wrapper function for ssl() on Windows. Inspired by SF patch Guido van Rossum <guido@python.org> parents: 17071 diff changeset	65 sock = sock._sock
17245 0377f927cafa Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 17156 diff changeset	66 return _realsslcall(sock, keyfile, certfile)
17156 1be0d1c57834 Add a wrapper function for ssl() on Windows. Inspired by SF patch Guido van Rossum <guido@python.org> parents: 17071 diff changeset	67
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	68
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	69 # WSA error codes
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	70 if sys.platform.lower().startswith("win"):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	71 errorTab = {}
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	72 errorTab[10004] = "The operation was interrupted."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	73 errorTab[10009] = "A bad file handle was passed."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	74 errorTab[10013] = "Permission denied."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	75 errorTab[10014] = "A fault occurred on the network??" # WSAEFAULT
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	76 errorTab[10022] = "An invalid operation was attempted."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	77 errorTab[10035] = "The socket operation would block"
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	78 errorTab[10036] = "A blocking operation is already in progress."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	79 errorTab[10048] = "The network address is in use."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	80 errorTab[10054] = "The connection has been reset."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	81 errorTab[10058] = "The network has been shut down."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	82 errorTab[10060] = "The operation timed out."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	83 errorTab[10061] = "Connection refused."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	84 errorTab[10063] = "The name is too long."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	85 errorTab[10064] = "The host is down."
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	86 errorTab[10065] = "The host is unreachable."
17071 b45ae8c467aa add errorTab to __all__ on win* Skip Montanaro <skip@pobox.com> parents: 16949 diff changeset	87 __all__.append("errorTab")
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	88 del os, sys
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	89
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	90
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	91 def getfqdn(name=''):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	92 """Get fully qualified domain name from name.
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	93
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	94 An empty argument is interpreted as meaning the local host.
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	95
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	96 First the hostname returned by gethostbyaddr() is checked, then
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	97 possibly existing aliases. In case no FQDN is available, hostname
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	98 is returned.
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	99 """
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	100 name = name.strip()
14014 3d68d5bccd40 updated occurences of fqdn algorithm (closes patch #101197) Peter Schneider-Kamp <nowonder@nowonder.de> parents: 14007 diff changeset	101 if not name or name == '0.0.0.0':
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	102 name = gethostname()
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	103 try:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	104 hostname, aliases, ipaddrs = gethostbyaddr(name)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	105 except error:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	106 pass
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	107 else:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	108 aliases.insert(0, hostname)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	109 for name in aliases:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	110 if '.' in name:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	111 break
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	112 else:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	113 name = hostname
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	114 return name
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	115
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	116
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	117 #
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	118 # These classes are used by the socket() defined on Windows and BeOS
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	119 # platforms to provide a best-effort implementation of the cleanup
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	120 # semantics needed when sockets can't be dup()ed.
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	121 #
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	122 # These are not actually used on other platforms.
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	123 #
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	124
19364 b738428238f1 When the socket is closed, don't just assign 0 to self._sock. Guido van Rossum <guido@python.org> parents: 17245 diff changeset	125 _socketmethods = (
b738428238f1 When the socket is closed, don't just assign 0 to self._sock. Guido van Rossum <guido@python.org> parents: 17245 diff changeset	126 'bind', 'connect', 'connect_ex', 'fileno', 'listen',
b738428238f1 When the socket is closed, don't just assign 0 to self._sock. Guido van Rossum <guido@python.org> parents: 17245 diff changeset	127 'getpeername', 'getsockname', 'getsockopt', 'setsockopt',
20732 b3b2fa76a392 Add 'sendall' to list of socket methods. Guido van Rossum <guido@python.org> parents: 20654 diff changeset	128 'recv', 'recvfrom', 'send', 'sendall', 'sendto', 'setblocking', 'shutdown')
19364 b738428238f1 When the socket is closed, don't just assign 0 to self._sock. Guido van Rossum <guido@python.org> parents: 17245 diff changeset	129
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	130 class _socketobject:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	131
21473 e1f3fe5677da Move the helper class _closedsocket into the _socketobject class. Guido van Rossum <guido@python.org> parents: 20732 diff changeset	132 class _closedsocket:
e1f3fe5677da Move the helper class _closedsocket into the _socketobject class. Guido van Rossum <guido@python.org> parents: 20732 diff changeset	133 def __getattr__(self, name):
e1f3fe5677da Move the helper class _closedsocket into the _socketobject class. Guido van Rossum <guido@python.org> parents: 20732 diff changeset	134 raise error(9, 'Bad file descriptor')
e1f3fe5677da Move the helper class _closedsocket into the _socketobject class. Guido van Rossum <guido@python.org> parents: 20732 diff changeset	135
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	136 def __init__(self, sock):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	137 self._sock = sock
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	138
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	139 def close(self):
21473 e1f3fe5677da Move the helper class _closedsocket into the _socketobject class. Guido van Rossum <guido@python.org> parents: 20732 diff changeset	140 # Avoid referencing globals here
e1f3fe5677da Move the helper class _closedsocket into the _socketobject class. Guido van Rossum <guido@python.org> parents: 20732 diff changeset	141 self._sock = self.__class__._closedsocket()
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	142
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	143 def __del__(self):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	144 self.close()
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	145
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	146 def accept(self):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	147 sock, addr = self._sock.accept()
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	148 return _socketobject(sock), addr
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	149
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	150 def dup(self):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	151 return _socketobject(self._sock)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	152
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	153 def makefile(self, mode='r', bufsize=-1):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	154 return _fileobject(self._sock, mode, bufsize)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	155
19364 b738428238f1 When the socket is closed, don't just assign 0 to self._sock. Guido van Rossum <guido@python.org> parents: 17245 diff changeset	156 _s = "def %s(self, args): return self._sock.%s(args)\n\n"
b738428238f1 When the socket is closed, don't just assign 0 to self._sock. Guido van Rossum <guido@python.org> parents: 17245 diff changeset	157 for _m in _socketmethods:
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	158 exec _s % (_m, _m)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	159
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	160
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	161 class _fileobject:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	162
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	163 def __init__(self, sock, mode, bufsize):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	164 self._sock = sock
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	165 self._mode = mode
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	166 if bufsize < 0:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	167 bufsize = 512
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	168 self._rbufsize = max(1, bufsize)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	169 self._wbufsize = bufsize
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	170 self._wbuf = self._rbuf = ""
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	171
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	172 def close(self):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	173 try:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	174 if self._sock:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	175 self.flush()
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	176 finally:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	177 self._sock = 0
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	178
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	179 def __del__(self):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	180 self.close()
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	181
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	182 def flush(self):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	183 if self._wbuf:
21963 2faa23facef7 The Grande 'sendall()' patch, copied from release21-maint. Fixes #516715. Martin v. Löwis <martin@v.loewis.de> parents: 21473 diff changeset	184 self._sock.sendall(self._wbuf)
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	185 self._wbuf = ""
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	186
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	187 def fileno(self):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	188 return self._sock.fileno()
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	189
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	190 def write(self, data):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	191 self._wbuf = self._wbuf + data
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	192 if self._wbufsize == 1:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	193 if '\n' in data:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	194 self.flush()
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	195 else:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	196 if len(self._wbuf) >= self._wbufsize:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	197 self.flush()
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	198
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	199 def writelines(self, list):
21963 2faa23facef7 The Grande 'sendall()' patch, copied from release21-maint. Fixes #516715. Martin v. Löwis <martin@v.loewis.de> parents: 21473 diff changeset	200 filter(self._sock.sendall, list)
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	201 self.flush()
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	202
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	203 def read(self, n=-1):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	204 if n >= 0:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	205 k = len(self._rbuf)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	206 if n <= k:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	207 data = self._rbuf[:n]
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	208 self._rbuf = self._rbuf[n:]
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	209 return data
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	210 n = n - k
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	211 L = [self._rbuf]
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	212 self._rbuf = ""
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	213 while n > 0:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	214 new = self._sock.recv(max(n, self._rbufsize))
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	215 if not new: break
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	216 k = len(new)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	217 if k > n:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	218 L.append(new[:n])
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	219 self._rbuf = new[n:]
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	220 break
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	221 L.append(new)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	222 n = n - k
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	223 return "".join(L)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	224 k = max(512, self._rbufsize)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	225 L = [self._rbuf]
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	226 self._rbuf = ""
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	227 while 1:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	228 new = self._sock.recv(k)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	229 if not new: break
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	230 L.append(new)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	231 k = min(k2, 1024*2)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	232 return "".join(L)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	233
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	234 def readline(self, limit=-1):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	235 data = ""
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	236 i = self._rbuf.find('\n')
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	237 while i < 0 and not (0 < limit <= len(self._rbuf)):
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	238 new = self._sock.recv(self._rbufsize)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	239 if not new: break
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	240 i = new.find('\n')
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	241 if i >= 0: i = i + len(self._rbuf)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	242 self._rbuf = self._rbuf + new
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	243 if i < 0: i = len(self._rbuf)
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	244 else: i = i+1
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	245 if 0 <= limit < len(self._rbuf): i = limit
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	246 data, self._rbuf = self._rbuf[:i], self._rbuf[i:]
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	247 return data
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	248
14682 295126433856 Support sizehint in _fileobject.readlines, as documented. Martin v. Löwis <martin@v.loewis.de> parents: 14592 diff changeset	249 def readlines(self, sizehint = 0):
295126433856 Support sizehint in _fileobject.readlines, as documented. Martin v. Löwis <martin@v.loewis.de> parents: 14592 diff changeset	250 total = 0
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	251 list = []
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	252 while 1:
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	253 line = self.readline()
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	254 if not line: break
eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	255 list.append(line)
14682 295126433856 Support sizehint in _fileobject.readlines, as documented. Martin v. Löwis <martin@v.loewis.de> parents: 14592 diff changeset	256 total += len(line)
295126433856 Support sizehint in _fileobject.readlines, as documented. Martin v. Löwis <martin@v.loewis.de> parents: 14592 diff changeset	257 if sizehint and total >= sizehint:
295126433856 Support sizehint in _fileobject.readlines, as documented. Martin v. Löwis <martin@v.loewis.de> parents: 14592 diff changeset	258 break
14007 eda09f824a9f Revise the wrapper structure for the socket module: Fred Drake <fdrake@acm.org> parents: diff changeset	259 return list

Mercurial > cpython-lru_cache-weakref

annotate Lib/socket.py @ 25838:8540887bcec6 2.2