socket – TCP, UDP and RAW socket support

Warning

This module is disabled in 6.x and will removed in 7.x. Please use networking libraries instead. (Native networking will provide a socket compatible class.)

Create TCP, UDP and RAW sockets for communicating over the Internet.

class socket.socket(family: int, type: int, proto: int)

Create a new socket

Parameters

  • family (int) – AF_INET or AF_INET6

  • type (int) – SOCK_STREAM, SOCK_DGRAM or SOCK_RAW

  • proto (int) – IPPROTO_TCP, IPPROTO_UDP or IPPROTO_RAW (ignored)

AF_INET :int
AF_INET6 :int
SOCK_STREAM :int
SOCK_DGRAM :int
SOCK_RAW :int
bind(self, address: Tuple[str, int]) → None

Bind a socket to an address

Parameters

address (tuple(str, int)) – tuple of (remote_address, remote_port)

listen(self, backlog: int) → None

Set socket to listen for incoming connections

Parameters

backlog (int) – length of backlog queue for waiting connetions

accept(self) → Tuple[socket, str]

Accept a connection on a listening socket of type SOCK_STREAM, creating a new socket of type SOCK_STREAM. Returns a tuple of (new_socket, remote_address)

connect(self, address: Tuple[str, int]) → None

Connect a socket to a remote address

Parameters

address (tuple(str, int)) – tuple of (remote_address, remote_port)

send(self, bytes: ReadableBuffer) → int

Send some bytes to the connected remote address. Suits sockets of type SOCK_STREAM

Parameters

bytes (ReadableBuffer) – some bytes to send

recv_into(self, buffer: WriteableBuffer, bufsize: int) → int

Reads some bytes from the connected remote address, writing into the provided buffer. If bufsize <= len(buffer) is given, a maximum of bufsize bytes will be read into the buffer. If no valid value is given for bufsize, the default is the length of the given buffer.

Suits sockets of type SOCK_STREAM Returns an int of number of bytes read.

Parameters

  • buffer (WriteableBuffer) – buffer to receive into

  • bufsize (int) – optionally, a maximum number of bytes to read.

recv(self, bufsize: int) → bytes

Reads some bytes from the connected remote address. Suits sockets of type SOCK_STREAM Returns a bytes() of length <= bufsize

Parameters

bufsize (int) – maximum number of bytes to receive

sendto(self, bytes: ReadableBuffer, address: Tuple[str, int]) → int

Send some bytes to a specific address. Suits sockets of type SOCK_DGRAM

Parameters
recvfrom(self, bufsize: int) → Tuple[bytes, Tuple[str, int]]

Reads some bytes from the connected remote address. Suits sockets of type SOCK_STREAM

Returns a tuple containing * a bytes() of length <= bufsize * a remote_address, which is a tuple of ip address and port number

Parameters

bufsize (int) – maximum number of bytes to receive

setsockopt(self, level: int, optname: int, value: int) → None

Sets socket options

settimeout(self, value: int) → None

Set the timeout value for this socket.

Parameters

value (int) – timeout in seconds. 0 means non-blocking. None means block indefinitely.

setblocking(self, flag: bool) → Optional[int]

Set the blocking behaviour of this socket.

Parameters

flag (bool) – False means non-blocking, True means block indefinitely.

socket.getaddrinfo(host: str, port: int) → Tuple[int, int, int, str, str]

Gets the address information for a hostname and port

Returns the appropriate family, socket type, socket protocol and address information to call socket.socket() and socket.connect() with, as a tuple.