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ehZ&G dFdG dGej'Z(dNdId Z)e* Z+e+dfdJd Z,dOdKdLZ-dS )Pa0 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 [*]
fromshare() -- create a socket object from data received from socket.share() [*]
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)
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
IntEnum constants:
AF_INET, AF_UNIX -- socket domains (first argument to socket() call)
SOCK_STREAM, SOCK_DGRAM, SOCK_RAW -- socket types (second argument)
Integer constants:
Many other constants may be defined; these may be used in calls to
the setsockopt() and getsockopt() methods.
N)*)IntEnumIntFlagEBADF EAGAIN EWOULDBLOCKfromfdgetfqdncreate_connection
AddressFamily
SocketKindc C s | j o| jdS )NZAF_)isupper
startswith)C r /usr/lib64/python3.6/socket.py<lambda>L s r c C s | j o| jdS )NZSOCK_)r r )r r r r r Q s ZMsgFlagc C s | j o| jdS )NZMSG_)r r )r r r r r V s Z AddressInfoc C s | j o| jdS )NZAI_)r r )r r r r r [ s z 127.0.0.1z::1c C s" y|| S t k
r | S X dS )z{Convert a numeric family value to an IntEnum member.
If it's not a known member, return the numeric value itself.
N)
ValueError)valueZ
enum_klassr r r _intenum_convertera s r winz The operation was interrupted.i' z A bad file handle was passed.i' zPermission denied.i ' z!A fault occurred on the network??i ' z#An invalid operation was attempted.i&' z The socket operation would blocki3' z,A blocking operation is already in progress.i4' z The network address is in use.i@' z The connection has been reset.iF' z The network has been shut down.iJ' zThe operation timed out.iL' zConnection refused.iM' zThe name is too long.iO' zThe host is down.iP' zThe host is unreachable.iQ' errorTabc @ s e Zd ZdS )_GiveupOnSendfileN)__name__
__module__ __qualname__r r r r r s r c s4 e Zd ZdZdddgZeeddfddZd d
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d:d dZd;d d Zd d Zd<d!d"Zd#d$ Zejfd%d&Zd'd( Z fd)d*Ze fd+d,Z e fd-d.Z ej d/krd0d1 Z d2d3 Z nd4d1 Z d5d3 Z d6e _d7e _ Z!S )=socketz:A subclass of _socket.socket adding the makefile() method. __weakref___io_refs_closedr Nc C s$ t jj| |||| d| _d| _d S )Nr F)_socketr __init__r r! )selffamilytypeprotofilenor r r r# s zsocket.__init__c C s | S )Nr )r$ r r r __enter__ s zsocket.__enter__c G s | j s| j d S )N)r! close)r$ argsr r r __exit__ s zsocket.__exit__c C s t | dd}d| jj| jj|r"dnd| j | j| j| jf }|sy | j }|r^|dt | 7 }W n t
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rt Y nX y | j }|r|dt | 7 }W n t
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r Y nX |d7 }|S ) zVWrap __repr__() to reveal the real class name and socket
address(es).
r! Fz,<%s.%s%s fd=%i, family=%s, type=%s, proto=%iz [closed] z
, laddr=%sz
, raddr=%s>) getattr __class__r r r( r% r& r' getsocknamestrerrorZ getpeername)r$ closedsZladdrZraddrr r r __repr__ s0
zsocket.__repr__c C s t dd S )Nz Cannot serialize socket object) TypeError)r$ r r r __getstate__ s zsocket.__getstate__c C s6 t | j }| j| j| j| j|d}|j| j |S )zdup() -> socket object
Duplicate the socket. Return a new socket object connected to the same
system resource. The new socket is non-inheritable.
)r( )dupr( r0 r% r& r'
settimeout
gettimeout)r$ fdsockr r r r9 s z
socket.dupc C sZ | j \}}| jt jdd @ }t| j|| j|d}t dkrR| j rR|j d ||fS )zaccept() -> (socket object, address info)
Wait for an incoming connection. Return a new socket
representing the connection, and the address of the client.
For IP sockets, the address info is a pair (hostaddr, port).
Z
SOCK_NONBLOCKr )r( NT)
Z_acceptr& globalsgetr r% r' Zgetdefaulttimeoutr; setblocking)r$ r< addrr& r= r r r accept s
z
socket.acceptr)encodingerrorsnewlinec
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| S ) zmakefile(...) -> an I/O stream connected to the socket
The arguments are as for io.open() after the filename, except the only
supported mode values are 'r' (default), 'w' and 'b'.
rC wbz&invalid mode %r (only r, w, b allowed)r- Nr z!unbuffered streams must be binary) setr SocketIOr ioDEFAULT_BUFFER_SIZEBufferedRWPairBufferedReaderBufferedWriter
TextIOWrappermode)
r$ rS bufferingrD rE rF ZwritingZreadingZbinaryZrawmoderawbuffertextr r r makefile s<
zsocket.makefilesendfilec 2 C s | j ||| | j }y |j }W n0 ttjfk
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r } z | dkrt||d W Y d d }~X qX |dkrP ||7 }| |7 } qW | S | dkrt |dr|j| X d S )Nr z&non-blocking sockets are not supported PollSelectorz timed outseek)_check_sendfile_paramsr( AttributeErrorrM UnsupportedOperationr osfstatst_sizeOSErrorr; r hasattr selectorsrZ ZSelectSelectorregisterZ EVENT_WRITEZselectrY r" timeoutBlockingIOErrorr[ )r$ fileoffsetcountZsocknor( errZfsize blocksizerf Zselector
total_sentZselector_selectZ os_sendfilesentr r r _sendfile_use_sendfile s`
z socket._sendfile_use_sendfilec C s t dd S )Nz,os.sendfile() not available on this platform)r )r$ rh ri rj r r r ro G s c
C s | j ||| | j dkr"td|r0|j| |r>t|dnd}d}|j}| j}zx|rrt|| |}|dkrrP t||}|sP xLy ||} W n tk
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|d r|j|| X d S )Nr z&non-blocking sockets are not supportedi r[ ) r\ r; r r[ minreadsend
memoryviewrg lenrc )
r$ rh ri rj rl rm Z file_readZ sock_senddatarn r r r _sendfile_use_sendK s<
zsocket._sendfile_use_sendc C sd dt |ddkrtd| jt@ s*td|d k r`t|tsJtdj||dkr`tdj|d S )NrH rS z$file should be opened in binary modez+only SOCK_STREAM type sockets are supportedz+count must be a positive integer (got {!r})r )r/ r r& SOCK_STREAM
isinstanceintr7 format)r$ rh ri rj r r r r\ o s
z socket._check_sendfile_paramsc C s2 y| j |||S tk
r, | j|||S X dS )a_ sendfile(file[, offset[, count]]) -> sent
Send a file until EOF is reached by using high-performance
os.sendfile() and return the total number of bytes which
were sent.
*file* must be a regular file object opened in binary mode.
If os.sendfile() is not available (e.g. Windows) or file is
not a regular file socket.send() will be used instead.
*offset* tells from where to start reading the file.
If specified, *count* is the total number of bytes to transmit
as opposed to sending the file until EOF is reached.
File position is updated on return or also in case of error in
which case file.tell() can be used to figure out the number of
bytes which were sent.
The socket must be of SOCK_STREAM type.
Non-blocking sockets are not supported.
N)ro r rv )r$ rh ri rj r r r rY | s zsocket.sendfilec C s* | j dkr| j d8 _ | jr&| j d S )Nr rI )r r! r* )r$ r r r _decref_socketios s
zsocket._decref_socketiosc C s |j | d S )N)r* )r$ Z_ssr r r _real_close s zsocket._real_closec C s d| _ | jdkr| j d S )NTr )r! r r| )r$ r r r r* s
z socket.closec s d| _ t j S )a detach() -> file descriptor
Close the socket object without closing the underlying file descriptor.
The object cannot be used after this call, but the file descriptor
can be reused for other purposes. The file descriptor is returned.
T)r! superdetach)r$ )r0 r r r~ s z
socket.detachc s t t jtS )z@Read-only access to the address family for this socket.
)r r} r% r
)r$ )r0 r r r% s z
socket.familyc s t t jtS )z-Read-only access to the socket type.
)r r} r& r )r$ )r0 r r r& s z socket.typentc C s t j| j S )N)r_ Zget_handle_inheritabler( )r$ r r r get_inheritable s zsocket.get_inheritablec C s t j| j | d S )N)r_ Zset_handle_inheritabler( )r$ inheritabler r r set_inheritable s zsocket.set_inheritablec C s t j| j S )N)r_ r r( )r$ r r r r s c C s t j| j | d S )N)r_ r r( )r$ r r r r r s z&Get the inheritable flag of the socketz&Set the inheritable flag of the socket)rC N)r N)r N)r N)r N)"r r r __doc__ __slots__AF_INETrw r# r) r, r6 r8 r9 rB rX rc r_ ro rv r\ rY r{ r" r r| r* r~ propertyr% r& namer r
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r c C s t | }t||||S )z fromfd(fd, family, type[, proto]) -> socket object
Create a socket object from a duplicate of the given file
descriptor. The remaining arguments are the same as for socket().
)r9 r )r< r% r& r' Znfdr r r r
s Zsharec C s t ddd| S )z fromshare(info) -> socket object
Create a socket object from the bytes object returned by
socket.share(pid).
r )r )infor r r fromshare s r
socketpairc
C sh | dkr*yt } W n tk
r( t} Y nX tj| ||\}}t| |||j }t| |||j }||fS )aa socketpair([family[, type[, proto]]]) -> (socket object, socket object)
Create a pair of socket objects from the sockets returned by the platform
socketpair() function.
The arguments are the same as for socket() except the default family is
AF_UNIX if defined on the platform; otherwise, the default is AF_INET.
N)ZAF_UNIX NameErrorr r" r r r~ )r% r& r' arH r r r r s
c
C s | t krt}n| tkr t}ntd|tkr4td|dkrDtdt| ||}z|j|df |j |j d d \}}t| ||}yP|j
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d |j \}} W n |j Y nX W d |j X ||fS )Nz?Only AF_INET and AF_INET6 socket address families are supportedz)Only SOCK_STREAM socket type is supportedr z Only protocol zero is supported FT)r
_LOCALHOSTZAF_INET6
_LOCALHOST_V6r rw r bindZlistenr1 r@ connectrg InterruptedErrorrB r* )
r% r& r' hostZlsockrA portZcsockZssock_r r r r s8
a8 socketpair([family[, type[, proto]]]) -> (socket object, socket object)
Create a pair of socket objects from the sockets returned by the platform
socketpair() function.
The arguments are the same as for socket() except the default family is AF_UNIX
if defined on the platform; otherwise, the default is AF_INET.
c sp e Zd ZdZdd Zdd Zdd Zdd Zd
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dd Z ZS )rL zRaw I/O implementation for stream sockets.
This class supports the makefile() method on sockets. It provides
the raw I/O interface on top of a socket object.
c C sZ |d
krt d| tjj| || _d|kr6|d7 }|| _d|k| _d|k| _d | _d S ) NrC rG rwrbwbrwbzinvalid mode: %rrH F)rC rG r r r r ) r rM RawIOBaser# _sock_mode_reading_writing_timeout_occurred)r$ r= rS r r r r# 0 s
zSocketIO.__init__c C s | j | j | jr tdxby | jj|S tk
rH d| _ Y q tk
r| } z|jd t krjdS W Y dd}~X q X q W dS )a3 Read up to len(b) bytes into the writable buffer *b* and return
the number of bytes read. If the socket is non-blocking and no bytes
are available, None is returned.
If *b* is non-empty, a 0 return value indicates that the connection
was shutdown at the other end.
z!cannot read from timed out objectTr N)
_checkClosed_checkReadabler rb r Z recv_intorf r3 r+ _blocking_errnos)r$ rH er r r readinto< s zSocketIO.readintoc C sX | j | j y | jj|S tk
rR } z|jd tkr@dS W Y dd}~X nX dS )a Write the given bytes or bytearray object *b* to the socket
and return the number of bytes written. This can be less than
len(b) if not all data could be written. If the socket is
non-blocking and no bytes could be written None is returned.
r N)r _checkWritabler rr r3 r+ r )r$ rH r r r r writeS s zSocketIO.writec C s | j rtd| jS )z2True if the SocketIO is open for reading.
z I/O operation on closed socket.)r4 r r )r$ r r r readablec s zSocketIO.readablec C s | j rtd| jS )z2True if the SocketIO is open for writing.
z I/O operation on closed socket.)r4 r r )r$ r r r writablej s zSocketIO.writablec s | j rtdt j S )z2True if the SocketIO is open for seeking.
z I/O operation on closed socket.)r4 r r} seekable)r$ )r0 r r r q s zSocketIO.seekablec C s | j | jj S )z=Return the file descriptor of the underlying socket.
)r r r( )r$ r r r r( x s zSocketIO.filenoc C s | j s| j S dS d S )NrI rJ )r4 r( )r$ r r r r ~ s z
SocketIO.namec C s | j S )N)r )r$ r r r rS s z
SocketIO.modec C s* | j r
dS tjj| | jj d| _dS )zClose the SocketIO object. This doesn't close the underlying
socket, except if all references to it have disappeared.
N)r4 rM r r* r r{ )r$ r r r r* s
zSocketIO.close)r r r r r# r r r r r r( r r rS r* r r r )r0 r rL s rL r- c C sp | j } | s| dkr t } yt| \}}}W n tk
rB Y n*X |jd| x|D ]} d| krVP qVW |} | S )a 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.
z0.0.0.0r .)stripZ gethostnameZ
gethostbyaddrr3 insert)r ZhostnamealiasesZipaddrsr r r r s
c C s | \}}d}xt ||dtD ]}|\}}} }
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X q X q W |dk r|ntddS )ac 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.
A host of '' or port 0 tells the OS to use the default.
Nr z!getaddrinfo returns an empty list) getaddrinforw r _GLOBAL_DEFAULT_TIMEOUTr: r r r3 r* )Zaddressrf Zsource_addressr r rk resafsocktyper' canonnamesar= r r r r r s*
c C sT g }xJt j| |||||D ]2}|\}} }}
} |jt|tt| t||
| f qW |S )a Resolve host and port into list of address info entries.
Translate the host/port argument into a sequence of 5-tuples that contain
all the necessary arguments for creating a socket connected to that service.
host is a domain name, a string representation of an IPv4/v6 address or
None. port is a string service name such as 'http', a numeric port number or
None. By passing None as the value of host and port, you can pass NULL to
the underlying C API.
The family, type and proto arguments can be optionally specified in order to
narrow the list of addresses returned. Passing zero as a value for each of
these arguments selects the full range of results.
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r ) r r r% r& r' flagsZaddrlistr r r r r r r r r s r )r )r- )r r r r ).r r" r_ sysrM rd enumr r errno ImportErrorr/ r r r __all__extend_get_exports_list_convertr r r r r Z _realsocketplatformlowerr r r Exceptionr r
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