sock_status()

Returns the current status of a socket.

Description

The sock_status() function retrieves the current status of a socket identified by the file descriptor sock and stores the status in the ret_status memory location.

Syntax

  ;;; Returns the current status of a socket
  (@interface func (export "sock_status")
    (param $fd $fd)
    (result $error (expected $sock_status (error $errno)))
  )

Parameters

• ctx: A mutable reference to the function environment.
• sock: The file descriptor of the socket whose status will be retrieved.
• ret_status: A WebAssembly pointer to a memory location where the status of the socket will be stored.

Return Value

The function returns an Errno value indicating the outcome of the operation. If the operation is successful, Errno::Success is returned. If an error occurs, an appropriate Errno value is returned.

Notes

• The sock_status() function retrieves the current status of the socket identified by the file descriptor sock.
• The status of the socket is stored in the ret_status memory location, which should be a WasmPtr<Sockstatus> pointing to a writable memory region.
• The possible socket status values are:
  • Opening: The socket is in the process of opening.
  • Opened: The socket has been successfully opened.
  • Closed: The socket has been closed.
  • Failed: An error occurred while opening or using the socket.
• The behavior and limitations of the sock_status() function may vary depending on the specific runtime environment and underlying networking implementation. It is important to consult the documentation or specifications of the specific environment to understand its behavior in that context.