# socket - pydoc - phpman Help on module socket: ## NAME socket ## MODULE REFERENCE The following documentation is automatically generated from the Python source files. It may be incomplete, incorrect or include features that are considered implementation detail and may vary between Python implementations. When in doubt, consult the module reference at the location listed above. ## DESCRIPTION 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 ### socketpair ### fromfd ### send_fds ### recv_fds ### fromshare ### gethostname ### gethostbyname ### gethostbyaddr ### getservbyname ### getprotobyname ### ntohs ### htons ### inet_aton ### inet_ntoa socket.getdefaulttimeout() -- get the default timeout value socket.setdefaulttimeout() -- set the default timeout value ### create_connection 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. ## CLASSES builtins.Exception(builtins.BaseException) builtins.OSError builtins.TimeoutError gaierror herror builtins.object _socket.socket socket enum.IntEnum(builtins.int, enum.Enum) AddressFamily SocketKind ### class AddressFamily | AddressFamily(value, names=None, *, module=None, qualname=None, type=None, start=1) | | An enumeration. | | Method resolution order: | AddressFamily | enum.IntEnum | builtins.int | enum.Enum | builtins.object | | Data and other attributes defined here: | | AF_ALG = | | AF_APPLETALK = | | AF_ASH = | | AF_ATMPVC = | | AF_ATMSVC = | | AF_AX25 = | | AF_BLUETOOTH = | | AF_BRIDGE = | | AF_CAN = | | AF_ECONET = | | AF_INET = | | AF_INET6 = | | AF_IPX = | | AF_IRDA = | | AF_KEY = | | AF_LLC = | | AF_NETBEUI = | | AF_NETLINK = | | AF_NETROM = | | AF_PACKET = | | AF_PPPOX = | | AF_QIPCRTR = | | AF_RDS = | | AF_ROSE = | | AF_SECURITY = | | AF_SNA = | | AF_TIPC = | | AF_UNIX = | | AF_UNSPEC = | | AF_VSOCK = | | AF_WANPIPE = | | AF_X25 = | | ---------------------------------------------------------------------- | Data descriptors inherited from enum.Enum: | | name | The name of the Enum member. | | value | The value of the Enum member. | | ---------------------------------------------------------------------- | Readonly properties inherited from enum.EnumMeta: | | __members__ | Returns a mapping of member name->value. | | This mapping lists all enum members, including aliases. Note that this | is a read-only view of the internal mapping. ### class SocketKind | SocketKind(value, names=None, *, module=None, qualname=None, type=None, start=1) | | An enumeration. | | Method resolution order: | SocketKind | enum.IntEnum | builtins.int | enum.Enum | builtins.object | | Data and other attributes defined here: | | SOCK_CLOEXEC = | | SOCK_DGRAM = | | SOCK_NONBLOCK = | | SOCK_RAW = | | SOCK_RDM = | | SOCK_SEQPACKET = | | SOCK_STREAM = | | ---------------------------------------------------------------------- | Data descriptors inherited from enum.Enum: | | name | The name of the Enum member. | | value | The value of the Enum member. | | ---------------------------------------------------------------------- | Readonly properties inherited from enum.EnumMeta: | | __members__ | Returns a mapping of member name->value. | | This mapping lists all enum members, including aliases. Note that this | is a read-only view of the internal mapping. SocketType = class socket(builtins.object) | socket(family=AF_INET, type=SOCK_STREAM, proto=0) -> socket object | socket(family=-1, type=-1, proto=-1, fileno=None) -> socket object | | Open a socket of the given type. The family argument specifies the | address family; it defaults to AF_INET. The type argument specifies | whether this is a stream (SOCK_STREAM, this is the default) | or datagram (SOCK_DGRAM) socket. The protocol argument defaults to 0, | specifying the default protocol. Keyword arguments are accepted. | The socket is created as non-inheritable. | | When a fileno is passed in, family, type and proto are auto-detected, | unless they are explicitly set. | | A socket object represents one endpoint of a network connection. | | Methods of socket objects (keyword arguments not allowed): | | _accept() -- accept connection, returning new socket fd and client address | bind(addr) -- bind the socket to a local address | close() -- close the socket | connect(addr) -- connect the socket to a remote address | connect_ex(addr) -- connect, return an error code instead of an exception | dup() -- return a new socket fd duplicated from fileno() | fileno() -- return underlying file descriptor | getpeername() -- return remote address [*] | getsockname() -- return local address | getsockopt(level, optname[, buflen]) -- get socket options | gettimeout() -- return timeout or None | listen([n]) -- start listening for incoming connections | recv(buflen[, flags]) -- receive data | recv_into(buffer[, nbytes[, flags]]) -- receive data (into a buffer) | recvfrom(buflen[, flags]) -- receive data and sender's address | recvfrom_into(buffer[, nbytes, [, flags]) | -- receive data and sender's address (into a buffer) | sendall(data[, flags]) -- send all data | send(data[, flags]) -- send data, may not send all of it | sendto(data[, flags], addr) -- send data to a given address | setblocking(bool) -- set or clear the blocking I/O flag | getblocking() -- return True if socket is blocking, False if non-blocking | setsockopt(level, optname, value[, optlen]) -- set socket options | settimeout(None | float) -- set or clear the timeout | shutdown(how) -- shut down traffic in one or both directions | | [*] not available on all platforms! | | Methods defined here: | | __del__(...) | | __getattribute__(self, name, /) | Return getattr(self, name). | | __init__(self, /, *args, **kwargs) | Initialize self. See help(type(self)) for accurate signature. | | __repr__(self, /) | Return repr(self). | | bind(...) | bind(address) | | Bind the socket to a local address. For IP sockets, the address is a | pair (host, port); the host must refer to the local host. For raw packet | sockets the address is a tuple (ifname, proto [,pkttype [,hatype [,addr]]]) | | close(...) | close() | | Close the socket. It cannot be used after this call. | | connect(...) | connect(address) | | Connect the socket to a remote address. For IP sockets, the address | is a pair (host, port). | | connect_ex(...) | connect_ex(address) -> errno | | This is like connect(address), but returns an error code (the errno value) | instead of raising an exception when an error occurs. | | detach(...) | detach() | | 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. | | fileno(...) | fileno() -> integer | | Return the integer file descriptor of the socket. | | getblocking(...) | getblocking() | | Returns True if socket is in blocking mode, or False if it | is in non-blocking mode. | | getpeername(...) | getpeername() -> address info | | Return the address of the remote endpoint. For IP sockets, the address | info is a pair (hostaddr, port). | | getsockname(...) | getsockname() -> address info | | Return the address of the local endpoint. The format depends on the | address family. For IPv4 sockets, the address info is a pair | (hostaddr, port). | | getsockopt(...) | getsockopt(level, option[, buffersize]) -> value | | Get a socket option. See the Unix manual for level and option. | If a nonzero buffersize argument is given, the return value is a | string of that length; otherwise it is an integer. | | gettimeout(...) | gettimeout() -> timeout | | Returns the timeout in seconds (float) associated with socket | operations. A timeout of None indicates that timeouts on socket | operations are disabled. | | listen(...) | listen([backlog]) | | Enable a server to accept connections. If backlog is specified, it must be | at least 0 (if it is lower, it is set to 0); it specifies the number of | unaccepted connections that the system will allow before refusing new | connections. If not specified, a default reasonable value is chosen. | | recv(...) | recv(buffersize[, flags]) -> data | | Receive up to buffersize bytes from the socket. For the optional flags | argument, see the Unix manual. When no data is available, block until | at least one byte is available or until the remote end is closed. When | the remote end is closed and all data is read, return the empty string. | | recv_into(...) | recv_into(buffer, [nbytes[, flags]]) -> nbytes_read | | A version of recv() that stores its data into a buffer rather than creating | a new string. Receive up to buffersize bytes from the socket. If buffersize | is not specified (or 0), receive up to the size available in the given buffer. | | See recv() for documentation about the flags. | | recvfrom(...) | recvfrom(buffersize[, flags]) -> (data, address info) | | Like recv(buffersize, flags) but also return the sender's address info. | | recvfrom_into(...) | recvfrom_into(buffer[, nbytes[, flags]]) -> (nbytes, address info) | | Like recv_into(buffer[, nbytes[, flags]]) but also return the sender's address info. | | recvmsg(...) | recvmsg(bufsize[, ancbufsize[, flags]]) -> (data, ancdata, msg_flags, address) | | Receive normal data (up to bufsize bytes) and ancillary data from the | socket. The ancbufsize argument sets the size in bytes of the | internal buffer used to receive the ancillary data; it defaults to 0, | meaning that no ancillary data will be received. Appropriate buffer | sizes for ancillary data can be calculated using CMSG_SPACE() or | CMSG_LEN(), and items which do not fit into the buffer might be | truncated or discarded. The flags argument defaults to 0 and has the | same meaning as for recv(). | | The return value is a 4-tuple: (data, ancdata, msg_flags, address). | The data item is a bytes object holding the non-ancillary data | received. The ancdata item is a list of zero or more tuples | (cmsg_level, cmsg_type, cmsg_data) representing the ancillary data | (control messages) received: cmsg_level and cmsg_type are integers | specifying the protocol level and protocol-specific type respectively, | and cmsg_data is a bytes object holding the associated data. The | msg_flags item is the bitwise OR of various flags indicating | conditions on the received message; see your system documentation for | details. If the receiving socket is unconnected, address is the | address of the sending socket, if available; otherwise, its value is | unspecified. | | If recvmsg() raises an exception after the system call returns, it | will first attempt to close any file descriptors received via the | SCM_RIGHTS mechanism. | | recvmsg_into(...) | recvmsg_into(buffers[, ancbufsize[, flags]]) -> (nbytes, ancdata, msg_flags, address) | | Receive normal data and ancillary data from the socket, scattering the | non-ancillary data into a series of buffers. The buffers argument | must be an iterable of objects that export writable buffers | (e.g. bytearray objects); these will be filled with successive chunks | of the non-ancillary data until it has all been written or there are | no more buffers. The ancbufsize argument sets the size in bytes of | the internal buffer used to receive the ancillary data; it defaults to | 0, meaning that no ancillary data will be received. Appropriate | buffer sizes for ancillary data can be calculated using CMSG_SPACE() | or CMSG_LEN(), and items which do not fit into the buffer might be | truncated or discarded. The flags argument defaults to 0 and has the | same meaning as for recv(). | | The return value is a 4-tuple: (nbytes, ancdata, msg_flags, address). | The nbytes item is the total number of bytes of non-ancillary data | written into the buffers. The ancdata item is a list of zero or more | tuples (cmsg_level, cmsg_type, cmsg_data) representing the ancillary | data (control messages) received: cmsg_level and cmsg_type are | integers specifying the protocol level and protocol-specific type | respectively, and cmsg_data is a bytes object holding the associated | data. The msg_flags item is the bitwise OR of various flags | indicating conditions on the received message; see your system | documentation for details. If the receiving socket is unconnected, | address is the address of the sending socket, if available; otherwise, | its value is unspecified. | | If recvmsg_into() raises an exception after the system call returns, | it will first attempt to close any file descriptors received via the | SCM_RIGHTS mechanism. | | send(...) | send(data[, flags]) -> count | | Send a data string to the socket. For the optional flags | argument, see the Unix manual. Return the number of bytes | sent; this may be less than len(data) if the network is busy. | | sendall(...) | sendall(data[, flags]) | | Send a data string to the socket. For the optional flags | argument, see the Unix manual. This calls send() repeatedly | until all data is sent. If an error occurs, it's impossible | to tell how much data has been sent. | | sendmsg(...) | sendmsg(buffers[, ancdata[, flags[, address]]]) -> count | | Send normal and ancillary data to the socket, gathering the | non-ancillary data from a series of buffers and concatenating it into | a single message. The buffers argument specifies the non-ancillary | data as an iterable of bytes-like objects (e.g. bytes objects). | The ancdata argument specifies the ancillary data (control messages) | as an iterable of zero or more tuples (cmsg_level, cmsg_type, | cmsg_data), where cmsg_level and cmsg_type are integers specifying the | protocol level and protocol-specific type respectively, and cmsg_data | is a bytes-like object holding the associated data. The flags | argument defaults to 0 and has the same meaning as for send(). If | address is supplied and not None, it sets a destination address for | the message. The return value is the number of bytes of non-ancillary | data sent. | | sendmsg_afalg(...) | sendmsg_afalg([msg], *, op[, iv[, assoclen[, flags=MSG_MORE]]]) | | Set operation mode, IV and length of associated data for an AF_ALG | operation socket. | | sendto(...) | sendto(data[, flags], address) -> count | | Like send(data, flags) but allows specifying the destination address. | For IP sockets, the address is a pair (hostaddr, port). | | setblocking(...) | setblocking(flag) | | Set the socket to blocking (flag is true) or non-blocking (false). | setblocking(True) is equivalent to settimeout(None); | setblocking(False) is equivalent to settimeout(0.0). | | setsockopt(...) | setsockopt(level, option, value: int) | setsockopt(level, option, value: buffer) | setsockopt(level, option, None, optlen: int) | | Set a socket option. See the Unix manual for level and option. | The value argument can either be an integer, a string buffer, or | None, optlen. | | settimeout(...) | settimeout(timeout) | | Set a timeout on socket operations. 'timeout' can be a float, | giving in seconds, or None. Setting a timeout of None disables | the timeout feature and is equivalent to [setblocking(1)](https://www.chedong.com/phpMan.php/man/setblocking/1/markdown). | Setting a timeout of zero is the same as [setblocking(0)](https://www.chedong.com/phpMan.php/man/setblocking/0/markdown). | | shutdown(...) | shutdown(flag) | | Shut down the reading side of the socket (flag == SHUT_RD), the writing side | of the socket (flag == SHUT_WR), or both ends (flag == SHUT_RDWR). | | ---------------------------------------------------------------------- | Static methods defined here: | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors defined here: | | family | the socket family | | proto | the socket protocol | | timeout | the socket timeout | | type | the socket type error = class OSError(Exception) | Base class for I/O related errors. | | Method resolution order: | OSError | Exception | BaseException | object | | Built-in subclasses: | BlockingIOError | ChildProcessError | ConnectionError | FileExistsError | ... and 7 other subclasses | | Methods defined here: | | __init__(self, /, *args, **kwargs) | Initialize self. See help(type(self)) for accurate signature. | | __reduce__(...) | Helper for pickle. | | __str__(self, /) | Return str(self). | | ---------------------------------------------------------------------- | Static methods defined here: | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors defined here: | | characters_written | | errno | POSIX exception code | | filename | exception filename | | filename2 | second exception filename | | strerror | exception strerror | | ---------------------------------------------------------------------- | Methods inherited from BaseException: | | __delattr__(self, name, /) | Implement delattr(self, name). | | __getattribute__(self, name, /) | Return getattr(self, name). | | __repr__(self, /) | Return repr(self). | | __setattr__(self, name, value, /) | Implement setattr(self, name, value). | | __setstate__(...) | | with_traceback(...) | Exception.with_traceback(tb) -- | set self.__traceback__ to tb and return self. | | ---------------------------------------------------------------------- | Data descriptors inherited from BaseException: | | __cause__ | exception cause | | __context__ | exception context | | __dict__ | | __suppress_context__ | | __traceback__ | | args ### class gaierror | Method resolution order: | gaierror | builtins.OSError | builtins.Exception | builtins.BaseException | builtins.object | | Data descriptors defined here: | | __weakref__ | list of weak references to the object (if defined) | | ---------------------------------------------------------------------- | Methods inherited from builtins.OSError: | | __init__(self, /, *args, **kwargs) | Initialize self. See help(type(self)) for accurate signature. | | __reduce__(...) | Helper for pickle. | | __str__(self, /) | Return str(self). | | ---------------------------------------------------------------------- | Static methods inherited from builtins.OSError: | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors inherited from builtins.OSError: | | characters_written | | errno | POSIX exception code | | filename | exception filename | | filename2 | second exception filename | | strerror | exception strerror | | ---------------------------------------------------------------------- | Methods inherited from builtins.BaseException: | | __delattr__(self, name, /) | Implement delattr(self, name). | | __getattribute__(self, name, /) | Return getattr(self, name). | | __repr__(self, /) | Return repr(self). | | __setattr__(self, name, value, /) | Implement setattr(self, name, value). | | __setstate__(...) | | with_traceback(...) | Exception.with_traceback(tb) -- | set self.__traceback__ to tb and return self. | | ---------------------------------------------------------------------- | Data descriptors inherited from builtins.BaseException: | | __cause__ | exception cause | | __context__ | exception context | | __dict__ | | __suppress_context__ | | __traceback__ | | args ### class herror | Method resolution order: | herror | builtins.OSError | builtins.Exception | builtins.BaseException | builtins.object | | Data descriptors defined here: | | __weakref__ | list of weak references to the object (if defined) | | ---------------------------------------------------------------------- | Methods inherited from builtins.OSError: | | __init__(self, /, *args, **kwargs) | Initialize self. See help(type(self)) for accurate signature. | | __reduce__(...) | Helper for pickle. | | __str__(self, /) | Return str(self). | | ---------------------------------------------------------------------- | Static methods inherited from builtins.OSError: | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors inherited from builtins.OSError: | | characters_written | | errno | POSIX exception code | | filename | exception filename | | filename2 | second exception filename | | strerror | exception strerror | | ---------------------------------------------------------------------- | Methods inherited from builtins.BaseException: | | __delattr__(self, name, /) | Implement delattr(self, name). | | __getattribute__(self, name, /) | Return getattr(self, name). | | __repr__(self, /) | Return repr(self). | | __setattr__(self, name, value, /) | Implement setattr(self, name, value). | | __setstate__(...) | | with_traceback(...) | Exception.with_traceback(tb) -- | set self.__traceback__ to tb and return self. | | ---------------------------------------------------------------------- | Data descriptors inherited from builtins.BaseException: | | __cause__ | exception cause | | __context__ | exception context | | __dict__ | | __suppress_context__ | | __traceback__ | | args ### class socket | socket(family=-1, type=-1, proto=-1, fileno=None) | | A subclass of _socket.socket adding the makefile() method. | | Method resolution order: | socket | _socket.socket | builtins.object | | Methods defined here: | | __enter__(self) | | __exit__(self, *args) | | __getstate__(self) | | __init__(self, family=-1, type=-1, proto=-1, fileno=None) | Initialize self. See help(type(self)) for accurate signature. | | __repr__(self) | Wrap __repr__() to reveal the real class name and socket | address(es). | | accept(self) | accept() -> (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). | | close(self) | close() | | Close the socket. It cannot be used after this call. | | detach(self) | 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. | | dup(self) | dup() -> socket object | | Duplicate the socket. Return a new socket object connected to the same | system resource. The new socket is non-inheritable. | | get_inheritable(self) | Get the inheritable flag of the socket | | makefile(self, mode='r', buffering=None, *, encoding=None, errors=None, newline=None) | makefile(...) -> 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'. | | sendfile(self, file, offset=0, count=None) | 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. | | set_inheritable(self, inheritable) | Set the inheritable flag of the socket | | ---------------------------------------------------------------------- | Readonly properties defined here: | | family | Read-only access to the address family for this socket. | | type | Read-only access to the socket type. | | ---------------------------------------------------------------------- | Data descriptors defined here: | | __weakref__ | list of weak references to the object (if defined) | | ---------------------------------------------------------------------- | Methods inherited from _socket.socket: | | __del__(...) | | __getattribute__(self, name, /) | Return getattr(self, name). | | bind(...) | bind(address) | | Bind the socket to a local address. For IP sockets, the address is a | pair (host, port); the host must refer to the local host. For raw packet | sockets the address is a tuple (ifname, proto [,pkttype [,hatype [,addr]]]) | | connect(...) | connect(address) | | Connect the socket to a remote address. For IP sockets, the address | is a pair (host, port). | | connect_ex(...) | connect_ex(address) -> errno | | This is like connect(address), but returns an error code (the errno value) | instead of raising an exception when an error occurs. | | fileno(...) | fileno() -> integer | | Return the integer file descriptor of the socket. | | getblocking(...) | getblocking() | | Returns True if socket is in blocking mode, or False if it | is in non-blocking mode. | | getpeername(...) | getpeername() -> address info | | Return the address of the remote endpoint. For IP sockets, the address | info is a pair (hostaddr, port). | | getsockname(...) | getsockname() -> address info | | Return the address of the local endpoint. The format depends on the | address family. For IPv4 sockets, the address info is a pair | (hostaddr, port). | | getsockopt(...) | getsockopt(level, option[, buffersize]) -> value | | Get a socket option. See the Unix manual for level and option. | If a nonzero buffersize argument is given, the return value is a | string of that length; otherwise it is an integer. | | gettimeout(...) | gettimeout() -> timeout | | Returns the timeout in seconds (float) associated with socket | operations. A timeout of None indicates that timeouts on socket | operations are disabled. | | listen(...) | listen([backlog]) | | Enable a server to accept connections. If backlog is specified, it must be | at least 0 (if it is lower, it is set to 0); it specifies the number of | unaccepted connections that the system will allow before refusing new | connections. If not specified, a default reasonable value is chosen. | | recv(...) | recv(buffersize[, flags]) -> data | | Receive up to buffersize bytes from the socket. For the optional flags | argument, see the Unix manual. When no data is available, block until | at least one byte is available or until the remote end is closed. When | the remote end is closed and all data is read, return the empty string. | | recv_into(...) | recv_into(buffer, [nbytes[, flags]]) -> nbytes_read | | A version of recv() that stores its data into a buffer rather than creating | a new string. Receive up to buffersize bytes from the socket. If buffersize | is not specified (or 0), receive up to the size available in the given buffer. | | See recv() for documentation about the flags. | | recvfrom(...) | recvfrom(buffersize[, flags]) -> (data, address info) | | Like recv(buffersize, flags) but also return the sender's address info. | | recvfrom_into(...) | recvfrom_into(buffer[, nbytes[, flags]]) -> (nbytes, address info) | | Like recv_into(buffer[, nbytes[, flags]]) but also return the sender's address info. | | recvmsg(...) | recvmsg(bufsize[, ancbufsize[, flags]]) -> (data, ancdata, msg_flags, address) | | Receive normal data (up to bufsize bytes) and ancillary data from the | socket. The ancbufsize argument sets the size in bytes of the | internal buffer used to receive the ancillary data; it defaults to 0, | meaning that no ancillary data will be received. Appropriate buffer | sizes for ancillary data can be calculated using CMSG_SPACE() or | CMSG_LEN(), and items which do not fit into the buffer might be | truncated or discarded. The flags argument defaults to 0 and has the | same meaning as for recv(). | | The return value is a 4-tuple: (data, ancdata, msg_flags, address). | The data item is a bytes object holding the non-ancillary data | received. The ancdata item is a list of zero or more tuples | (cmsg_level, cmsg_type, cmsg_data) representing the ancillary data | (control messages) received: cmsg_level and cmsg_type are integers | specifying the protocol level and protocol-specific type respectively, | and cmsg_data is a bytes object holding the associated data. The | msg_flags item is the bitwise OR of various flags indicating | conditions on the received message; see your system documentation for | details. If the receiving socket is unconnected, address is the | address of the sending socket, if available; otherwise, its value is | unspecified. | | If recvmsg() raises an exception after the system call returns, it | will first attempt to close any file descriptors received via the | SCM_RIGHTS mechanism. | | recvmsg_into(...) | recvmsg_into(buffers[, ancbufsize[, flags]]) -> (nbytes, ancdata, msg_flags, address) | | Receive normal data and ancillary data from the socket, scattering the | non-ancillary data into a series of buffers. The buffers argument | must be an iterable of objects that export writable buffers | (e.g. bytearray objects); these will be filled with successive chunks | of the non-ancillary data until it has all been written or there are | no more buffers. The ancbufsize argument sets the size in bytes of | the internal buffer used to receive the ancillary data; it defaults to | 0, meaning that no ancillary data will be received. Appropriate | buffer sizes for ancillary data can be calculated using CMSG_SPACE() | or CMSG_LEN(), and items which do not fit into the buffer might be | truncated or discarded. The flags argument defaults to 0 and has the | same meaning as for recv(). | | The return value is a 4-tuple: (nbytes, ancdata, msg_flags, address). | The nbytes item is the total number of bytes of non-ancillary data | written into the buffers. The ancdata item is a list of zero or more | tuples (cmsg_level, cmsg_type, cmsg_data) representing the ancillary | data (control messages) received: cmsg_level and cmsg_type are | integers specifying the protocol level and protocol-specific type | respectively, and cmsg_data is a bytes object holding the associated | data. The msg_flags item is the bitwise OR of various flags | indicating conditions on the received message; see your system | documentation for details. If the receiving socket is unconnected, | address is the address of the sending socket, if available; otherwise, | its value is unspecified. | | If recvmsg_into() raises an exception after the system call returns, | it will first attempt to close any file descriptors received via the | SCM_RIGHTS mechanism. | | send(...) | send(data[, flags]) -> count | | Send a data string to the socket. For the optional flags | argument, see the Unix manual. Return the number of bytes | sent; this may be less than len(data) if the network is busy. | | sendall(...) | sendall(data[, flags]) | | Send a data string to the socket. For the optional flags | argument, see the Unix manual. This calls send() repeatedly | until all data is sent. If an error occurs, it's impossible | to tell how much data has been sent. | | sendmsg(...) | sendmsg(buffers[, ancdata[, flags[, address]]]) -> count | | Send normal and ancillary data to the socket, gathering the | non-ancillary data from a series of buffers and concatenating it into | a single message. The buffers argument specifies the non-ancillary | data as an iterable of bytes-like objects (e.g. bytes objects). | The ancdata argument specifies the ancillary data (control messages) | as an iterable of zero or more tuples (cmsg_level, cmsg_type, | cmsg_data), where cmsg_level and cmsg_type are integers specifying the | protocol level and protocol-specific type respectively, and cmsg_data | is a bytes-like object holding the associated data. The flags | argument defaults to 0 and has the same meaning as for send(). If | address is supplied and not None, it sets a destination address for | the message. The return value is the number of bytes of non-ancillary | data sent. | | sendmsg_afalg(...) | sendmsg_afalg([msg], *, op[, iv[, assoclen[, flags=MSG_MORE]]]) | | Set operation mode, IV and length of associated data for an AF_ALG | operation socket. | | sendto(...) | sendto(data[, flags], address) -> count | | Like send(data, flags) but allows specifying the destination address. | For IP sockets, the address is a pair (hostaddr, port). | | setblocking(...) | setblocking(flag) | | Set the socket to blocking (flag is true) or non-blocking (false). | setblocking(True) is equivalent to settimeout(None); | setblocking(False) is equivalent to settimeout(0.0). | | setsockopt(...) | setsockopt(level, option, value: int) | setsockopt(level, option, value: buffer) | setsockopt(level, option, None, optlen: int) | | Set a socket option. See the Unix manual for level and option. | The value argument can either be an integer, a string buffer, or | None, optlen. | | settimeout(...) | settimeout(timeout) | | Set a timeout on socket operations. 'timeout' can be a float, | giving in seconds, or None. Setting a timeout of None disables | the timeout feature and is equivalent to [setblocking(1)](https://www.chedong.com/phpMan.php/man/setblocking/1/markdown). | Setting a timeout of zero is the same as [setblocking(0)](https://www.chedong.com/phpMan.php/man/setblocking/0/markdown). | | shutdown(...) | shutdown(flag) | | Shut down the reading side of the socket (flag == SHUT_RD), the writing side | of the socket (flag == SHUT_WR), or both ends (flag == SHUT_RDWR). | | ---------------------------------------------------------------------- | Static methods inherited from _socket.socket: | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors inherited from _socket.socket: | | proto | the socket protocol | | timeout | the socket timeout timeout = class TimeoutError(OSError) | Timeout expired. | | Method resolution order: | TimeoutError | OSError | Exception | BaseException | object | | Methods defined here: | | __init__(self, /, *args, **kwargs) | Initialize self. See help(type(self)) for accurate signature. | | ---------------------------------------------------------------------- | Methods inherited from OSError: | | __reduce__(...) | Helper for pickle. | | __str__(self, /) | Return str(self). | | ---------------------------------------------------------------------- | Static methods inherited from OSError: | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors inherited from OSError: | | characters_written | | errno | POSIX exception code | | filename | exception filename | | filename2 | second exception filename | | strerror | exception strerror | | ---------------------------------------------------------------------- | Methods inherited from BaseException: | | __delattr__(self, name, /) | Implement delattr(self, name). | | __getattribute__(self, name, /) | Return getattr(self, name). | | __repr__(self, /) | Return repr(self). | | __setattr__(self, name, value, /) | Implement setattr(self, name, value). | | __setstate__(...) | | with_traceback(...) | Exception.with_traceback(tb) -- | set self.__traceback__ to tb and return self. | | ---------------------------------------------------------------------- | Data descriptors inherited from BaseException: | | __cause__ | exception cause | | __context__ | exception context | | __dict__ | | __suppress_context__ | | __traceback__ | | args ## FUNCTIONS CMSG_LEN(...) CMSG_LEN(length) -> control message length Return the total length, without trailing padding, of an ancillary data item with associated data of the given length. This value can often be used as the buffer size for recvmsg() to receive a single item of ancillary data, but RFC 3542 requires portable applications to use CMSG_SPACE() and thus include space for padding, even when the item will be the last in the buffer. Raises OverflowError if length is outside the permissible range of values. CMSG_SPACE(...) CMSG_SPACE(length) -> buffer size Return the buffer size needed for recvmsg() to receive an ancillary data item with associated data of the given length, along with any trailing padding. The buffer space needed to receive multiple items is the sum of the CMSG_SPACE() values for their associated data lengths. Raises OverflowError if length is outside the permissible range of values. ### close close(integer) -> None Close an integer socket file descriptor. This is like os.close(), but for sockets; on some platforms os.close() won't work for socket file descriptors. ### create_connection 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. ### create_server Convenience function which creates a SOCK_STREAM type socket bound to *address* (a 2-tuple (host, port)) and return the socket object. *family* should be either AF_INET or AF_INET6. *backlog* is the queue size passed to socket.listen(). *reuse_port* dictates whether to use the SO_REUSEPORT socket option. *dualstack_ipv6*: if true and the platform supports it, it will create an AF_INET6 socket able to accept both IPv4 or IPv6 connections. When false it will explicitly disable this option on platforms that enable it by default (e.g. Linux). >>> with create_server(('', 8000)) as server: ... while True: ... conn, addr = server.accept() ... # handle new connection ### dup dup(integer) -> integer Duplicate an integer socket file descriptor. This is like os.dup(), but for sockets; on some platforms os.dup() won't work for socket file descriptors. ### fromfd 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(). ### getaddrinfo 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. ### getdefaulttimeout getdefaulttimeout() -> timeout Returns the default timeout in seconds (float) for new socket objects. A value of None indicates that new socket objects have no timeout. When the socket module is first imported, the default is None. ### getfqdn 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 and `name` was given, it is returned unchanged. If `name` was empty, '0.0.0.0' or '::', hostname from gethostname() is returned. ### gethostbyaddr gethostbyaddr(host) -> (name, aliaslist, addresslist) Return the true host name, a list of aliases, and a list of IP addresses, for a host. The host argument is a string giving a host name or IP number. ### gethostbyname gethostbyname(host) -> address Return the IP address (a string of the form '255.255.255.255') for a host. ### gethostbyname_ex gethostbyname_ex(host) -> (name, aliaslist, addresslist) Return the true host name, a list of aliases, and a list of IP addresses, for a host. The host argument is a string giving a host name or IP number. ### gethostname gethostname() -> string Return the current host name. ### getnameinfo getnameinfo(sockaddr, flags) --> (host, port) Get host and port for a sockaddr. ### getprotobyname [getprotobyname(name)](https://www.chedong.com/phpMan.php/man/getprotobyname/name/markdown) -> integer Return the protocol number for the named protocol. (Rarely used.) ### getservbyname getservbyname(servicename[, protocolname]) -> integer Return a port number from a service name and protocol name. The optional protocol name, if given, should be 'tcp' or 'udp', otherwise any protocol will match. ### getservbyport getservbyport(port[, protocolname]) -> string Return the service name from a port number and protocol name. The optional protocol name, if given, should be 'tcp' or 'udp', otherwise any protocol will match. ### has_dualstack_ipv6 Return True if the platform supports creating a SOCK_STREAM socket which can handle both AF_INET and AF_INET6 (IPv4 / IPv6) connections. ### htonl htonl(integer) -> integer Convert a 32-bit integer from host to network byte order. ### htons htons(integer) -> integer Convert a 16-bit unsigned integer from host to network byte order. ### if_indextoname if_indextoname(if_index) Returns the interface name corresponding to the interface index if_index. ### if_nameindex if_nameindex() Returns a list of network interface information (index, name) tuples. ### if_nametoindex if_nametoindex(if_name) Returns the interface index corresponding to the interface name if_name. ### inet_aton inet_aton(string) -> bytes giving packed 32-bit IP representation Convert an IP address in string format (123.45.67.89) to the 32-bit packed binary format used in low-level network functions. ### inet_ntoa inet_ntoa(packed_ip) -> ip_address_string Convert an IP address from 32-bit packed binary format to string format ### inet_ntop inet_ntop(af, packed_ip) -> string formatted IP address Convert a packed IP address of the given family to string format. ### inet_pton inet_pton(af, ip) -> packed IP address string Convert an IP address from string format to a packed string suitable for use with low-level network functions. ### ntohl ntohl(integer) -> integer Convert a 32-bit integer from network to host byte order. ### ntohs ntohs(integer) -> integer Convert a 16-bit unsigned integer from network to host byte order. ### recv_fds recv_fds(sock, bufsize, maxfds[, flags]) -> (data, list of file descriptors, msg_flags, address) Receive up to maxfds file descriptors returning the message data and a list containing the descriptors. ### send_fds send_fds(sock, buffers, fds[, flags[, address]]) -> integer Send the list of file descriptors fds over an AF_UNIX socket. ### setdefaulttimeout setdefaulttimeout(timeout) Set the default timeout in seconds (float) for new socket objects. A value of None indicates that new socket objects have no timeout. When the socket module is first imported, the default is None. ### sethostname [sethostname(name)](https://www.chedong.com/phpMan.php/man/sethostname/name/markdown) Sets the hostname to name. ### socketpair 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. ## DATA AF_ALG = AF_APPLETALK = AF_ASH = AF_ATMPVC = AF_ATMSVC = AF_AX25 = AF_BLUETOOTH = AF_BRIDGE = AF_CAN = AF_DECnet = 12 AF_ECONET = AF_INET = AF_INET6 = AF_IPX = AF_IRDA = AF_KEY = AF_LLC = AF_NETBEUI = AF_NETLINK = AF_NETROM = AF_PACKET = AF_PPPOX = AF_QIPCRTR = AF_RDS = AF_ROSE = AF_ROUTE = AF_SECURITY = AF_SNA = AF_TIPC = AF_UNIX = AF_UNSPEC = AF_VSOCK = AF_WANPIPE = AF_X25 = AI_ADDRCONFIG = AI_ALL = AI_CANONNAME = AI_NUMERICHOST = AI_NUMERICSERV = AI_PASSIVE = AI_V4MAPPED = ALG_OP_DECRYPT = 0 ALG_OP_ENCRYPT = 1 ALG_OP_SIGN = 2 ALG_OP_VERIFY = 3 ALG_SET_AEAD_ASSOCLEN = 4 ALG_SET_AEAD_AUTHSIZE = 5 ALG_SET_IV = 2 ALG_SET_KEY = 1 ALG_SET_OP = 3 ALG_SET_PUBKEY = 6 BDADDR_ANY = '00:00:00:00:00:00' BDADDR_LOCAL = '00:00:00:FF:FF:FF' BTPROTO_HCI = 1 BTPROTO_L2CAP = 0 BTPROTO_RFCOMM = 3 BTPROTO_SCO = 2 CAN_BCM = 2 CAN_BCM_CAN_FD_FRAME = 2048 CAN_BCM_RX_ANNOUNCE_RESUME = 256 CAN_BCM_RX_CHANGED = 12 CAN_BCM_RX_CHECK_DLC = 64 CAN_BCM_RX_DELETE = 6 CAN_BCM_RX_FILTER_ID = 32 CAN_BCM_RX_NO_AUTOTIMER = 128 CAN_BCM_RX_READ = 7 CAN_BCM_RX_RTR_FRAME = 1024 CAN_BCM_RX_SETUP = 5 CAN_BCM_RX_STATUS = 10 CAN_BCM_RX_TIMEOUT = 11 CAN_BCM_SETTIMER = 1 CAN_BCM_STARTTIMER = 2 CAN_BCM_TX_ANNOUNCE = 8 CAN_BCM_TX_COUNTEVT = 4 CAN_BCM_TX_CP_CAN_ID = 16 CAN_BCM_TX_DELETE = 2 CAN_BCM_TX_EXPIRED = 9 CAN_BCM_TX_READ = 3 CAN_BCM_TX_RESET_MULTI_IDX = 512 CAN_BCM_TX_SEND = 4 CAN_BCM_TX_SETUP = 1 CAN_BCM_TX_STATUS = 8 CAN_EFF_FLAG = 2147483648 CAN_EFF_MASK = 536870911 CAN_ERR_FLAG = 536870912 CAN_ERR_MASK = 536870911 CAN_ISOTP = 6 CAN_J1939 = 7 CAN_RAW = 1 CAN_RAW_ERR_FILTER = 2 CAN_RAW_FD_FRAMES = 5 CAN_RAW_FILTER = 1 CAN_RAW_JOIN_FILTERS = 6 CAN_RAW_LOOPBACK = 3 CAN_RAW_RECV_OWN_MSGS = 4 CAN_RTR_FLAG = 1073741824 CAN_SFF_MASK = 2047 CAPI = EAI_ADDRFAMILY = -9 EAI_AGAIN = -3 EAI_BADFLAGS = -1 EAI_FAIL = -4 EAI_FAMILY = -6 EAI_MEMORY = -10 EAI_NODATA = -5 EAI_NONAME = -2 EAI_OVERFLOW = -12 EAI_SERVICE = -8 EAI_SOCKTYPE = -7 EAI_SYSTEM = -11 HCI_DATA_DIR = 1 HCI_FILTER = 2 HCI_TIME_STAMP = 3 INADDR_ALLHOSTS_GROUP = 3758096385 INADDR_ANY = 0 INADDR_BROADCAST = 4294967295 INADDR_LOOPBACK = 2130706433 INADDR_MAX_LOCAL_GROUP = 3758096639 INADDR_NONE = 4294967295 INADDR_UNSPEC_GROUP = 3758096384 IOCTL_VM_SOCKETS_GET_LOCAL_CID = 1977 IPPORT_RESERVED = 1024 IPPORT_USERRESERVED = 5000 IPPROTO_AH = 51 IPPROTO_DSTOPTS = 60 IPPROTO_EGP = 8 IPPROTO_ESP = 50 IPPROTO_FRAGMENT = 44 IPPROTO_GRE = 47 IPPROTO_HOPOPTS = 0 IPPROTO_ICMP = 1 IPPROTO_ICMPV6 = 58 IPPROTO_IDP = 22 IPPROTO_IGMP = 2 IPPROTO_IP = 0 IPPROTO_IPIP = 4 IPPROTO_IPV6 = 41 IPPROTO_MPTCP = 262 IPPROTO_NONE = 59 IPPROTO_PIM = 103 IPPROTO_PUP = 12 IPPROTO_RAW = 255 IPPROTO_ROUTING = 43 IPPROTO_RSVP = 46 IPPROTO_SCTP = 132 IPPROTO_TCP = 6 IPPROTO_TP = 29 IPPROTO_UDP = 17 IPPROTO_UDPLITE = 136 IPV6_CHECKSUM = 7 IPV6_DONTFRAG = 62 IPV6_DSTOPTS = 59 IPV6_HOPLIMIT = 52 IPV6_HOPOPTS = 54 IPV6_JOIN_GROUP = 20 IPV6_LEAVE_GROUP = 21 IPV6_MULTICAST_HOPS = 18 IPV6_MULTICAST_IF = 17 IPV6_MULTICAST_LOOP = 19 IPV6_NEXTHOP = 9 IPV6_PATHMTU = 61 IPV6_PKTINFO = 50 IPV6_RECVDSTOPTS = 58 IPV6_RECVHOPLIMIT = 51 IPV6_RECVHOPOPTS = 53 IPV6_RECVPATHMTU = 60 IPV6_RECVPKTINFO = 49 IPV6_RECVRTHDR = 56 IPV6_RECVTCLASS = 66 IPV6_RTHDR = 57 IPV6_RTHDRDSTOPTS = 55 IPV6_RTHDR_TYPE_0 = 0 IPV6_TCLASS = 67 IPV6_UNICAST_HOPS = 16 IPV6_V6ONLY = 26 IP_ADD_MEMBERSHIP = 35 IP_DEFAULT_MULTICAST_LOOP = 1 IP_DEFAULT_MULTICAST_TTL = 1 IP_DROP_MEMBERSHIP = 36 IP_HDRINCL = 3 IP_MAX_MEMBERSHIPS = 20 IP_MULTICAST_IF = 32 IP_MULTICAST_LOOP = 34 IP_MULTICAST_TTL = 33 IP_OPTIONS = 4 IP_RECVOPTS = 6 IP_RECVRETOPTS = 7 IP_RECVTOS = 13 IP_RETOPTS = 7 IP_TOS = 1 IP_TRANSPARENT = 19 IP_TTL = 2 J1939_EE_INFO_NONE = 0 J1939_EE_INFO_TX_ABORT = 1 J1939_FILTER_MAX = 512 J1939_IDLE_ADDR = 254 J1939_MAX_UNICAST_ADDR = 253 J1939_NLA_BYTES_ACKED = 1 J1939_NLA_PAD = 0 J1939_NO_ADDR = 255 J1939_NO_NAME = 0 J1939_NO_PGN = 262144 J1939_PGN_ADDRESS_CLAIMED = 60928 J1939_PGN_ADDRESS_COMMANDED = 65240 J1939_PGN_MAX = 262143 J1939_PGN_PDU1_MAX = 261888 J1939_PGN_REQUEST = 59904 MSG_CMSG_CLOEXEC = MSG_CONFIRM = MSG_CTRUNC = MSG_DONTROUTE = MSG_DONTWAIT = MSG_EOR = MSG_ERRQUEUE = MSG_FASTOPEN = MSG_MORE = MSG_NOSIGNAL = MSG_OOB = MSG_PEEK = MSG_TRUNC = MSG_WAITALL = NETLINK_CRYPTO = 21 NETLINK_DNRTMSG = 14 NETLINK_FIREWALL = 3 NETLINK_IP6_FW = 13 NETLINK_NFLOG = 5 NETLINK_ROUTE = 0 NETLINK_USERSOCK = 2 NETLINK_XFRM = 6 NI_DGRAM = 16 NI_MAXHOST = 1025 NI_MAXSERV = 32 NI_NAMEREQD = 8 NI_NOFQDN = 4 NI_NUMERICHOST = 1 NI_NUMERICSERV = 2 PACKET_BROADCAST = 1 PACKET_FASTROUTE = 6 PACKET_HOST = 0 PACKET_LOOPBACK = 5 PACKET_MULTICAST = 2 PACKET_OTHERHOST = 3 PACKET_OUTGOING = 4 PF_CAN = 29 PF_PACKET = 17 PF_RDS = 21 SCM_CREDENTIALS = 2 SCM_J1939_DEST_ADDR = 1 SCM_J1939_DEST_NAME = 2 SCM_J1939_ERRQUEUE = 4 SCM_J1939_PRIO = 3 SCM_RIGHTS = 1 SHUT_RD = 0 SHUT_RDWR = 2 SHUT_WR = 1 SOCK_CLOEXEC = SOCK_DGRAM = SOCK_NONBLOCK = SOCK_RAW = SOCK_RDM = SOCK_SEQPACKET = SOCK_STREAM = SOL_ALG = 279 SOL_CAN_BASE = 100 SOL_CAN_RAW = 101 SOL_HCI = 0 SOL_IP = 0 SOL_RDS = 276 SOL_SOCKET = 1 SOL_TCP = 6 SOL_TIPC = 271 SOL_UDP = 17 SOMAXCONN = 4096 SO_ACCEPTCONN = 30 SO_BINDTODEVICE = 25 SO_BROADCAST = 6 SO_DEBUG = 1 SO_DOMAIN = 39 SO_DONTROUTE = 5 SO_ERROR = 4 SO_J1939_ERRQUEUE = 4 SO_J1939_FILTER = 1 SO_J1939_PROMISC = 2 SO_J1939_SEND_PRIO = 3 SO_KEEPALIVE = 9 SO_LINGER = 13 SO_MARK = 36 SO_OOBINLINE = 10 SO_PASSCRED = 16 SO_PASSSEC = 34 SO_PEERCRED = 17 SO_PEERSEC = 31 SO_PRIORITY = 12 SO_PROTOCOL = 38 SO_RCVBUF = 8 SO_RCVLOWAT = 18 SO_RCVTIMEO = 20 SO_REUSEADDR = 2 SO_REUSEPORT = 15 SO_SNDBUF = 7 SO_SNDLOWAT = 19 SO_SNDTIMEO = 21 SO_TYPE = 3 SO_VM_SOCKETS_BUFFER_MAX_SIZE = 2 SO_VM_SOCKETS_BUFFER_MIN_SIZE = 1 SO_VM_SOCKETS_BUFFER_SIZE = 0 TCP_CONGESTION = 13 TCP_CORK = 3 TCP_DEFER_ACCEPT = 9 TCP_FASTOPEN = 23 TCP_INFO = 11 TCP_KEEPCNT = 6 TCP_KEEPIDLE = 4 TCP_KEEPINTVL = 5 TCP_LINGER2 = 8 TCP_MAXSEG = 2 TCP_NODELAY = 1 TCP_NOTSENT_LOWAT = 25 TCP_QUICKACK = 12 TCP_SYNCNT = 7 TCP_USER_TIMEOUT = 18 TCP_WINDOW_CLAMP = 10 TIPC_ADDR_ID = 3 TIPC_ADDR_NAME = 2 TIPC_ADDR_NAMESEQ = 1 TIPC_CFG_SRV = 0 TIPC_CLUSTER_SCOPE = 2 TIPC_CONN_TIMEOUT = 130 TIPC_CRITICAL_IMPORTANCE = 3 TIPC_DEST_DROPPABLE = 129 TIPC_HIGH_IMPORTANCE = 2 TIPC_IMPORTANCE = 127 TIPC_LOW_IMPORTANCE = 0 TIPC_MEDIUM_IMPORTANCE = 1 TIPC_NODE_SCOPE = 3 TIPC_PUBLISHED = 1 TIPC_SRC_DROPPABLE = 128 TIPC_SUBSCR_TIMEOUT = 3 TIPC_SUB_CANCEL = 4 TIPC_SUB_PORTS = 1 TIPC_SUB_SERVICE = 2 TIPC_TOP_SRV = 1 TIPC_WAIT_FOREVER = -1 TIPC_WITHDRAWN = 2 TIPC_ZONE_SCOPE = 1 UDPLITE_RECV_CSCOV = 11 UDPLITE_SEND_CSCOV = 10 VMADDR_CID_ANY = 4294967295 VMADDR_CID_HOST = 2 VMADDR_PORT_ANY = 4294967295 VM_SOCKETS_INVALID_VERSION = 4294967295 __all__ = ['fromfd', 'getfqdn', 'create_connection', 'create_server', ... has_ipv6 = True ## FILE /usr/lib/python3.10/socket.py