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d � Z d d g Z! e! j" e j# e � � e$ Z% e j& j' � j( d � r�i Z) d e) d <d e) d <d e) d <d e) d <d e) d <d e) d <d e) d <d e) d! <d" e) d# <d$ e) d% <d& e) d' <d( e) d) <d* e) d+ <d, e) d- <d. e) d/ <e! j* d0 � n d1 d2 � Z+ d3 d4 d5 d6 d7 d8 d9 d: d; d< d= d> d? d@ f Z, e j- dA k r�e, dB f Z, n e j& dC k re, dD f Z, n dE dF dG dH dI dJ f Z. dK e/ f dL � � YZ0 dM e/ f dN � � YZ1 dO � Z2 x] e, D]U Z3 e e2 e3 � Z4 e3 e4 _5 e e% e3 � j e4 _ e e4 e e1 � Z6 e7 e1 e3 e6 � qWWe1 Z$ Z8 dP e/ f dQ � � YZ9 e/ � Z: e: e dR � Z; d S(S s 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.
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An empty argument is interpreted as meaning the local host.
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possibly existing aliases. In case no FQDN is available, hostname
from gethostname() is returned.
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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.
A host of '' or port 0 tells the OS to use the default.
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