Sends the entire contents of a file down a socket.
sock_send_file() function is used to send the entire contents of a file down a socket. It reads the data from the file and transmits it over the socket. The function returns the number of bytes transmitted.
;;; Sends the entire contents of a file down a socket (@interface func (export "sock_send_file") (param $out_fd $fd) ;;; Open file that has the data to be transmitted (param $in_fd $fd) ;;; Offset into the file to start reading at (param $offset $filesize) ;;; Number of bytes to be sent (param $count $filesize) ;;; Number of bytes transmitted. (result $error (expected $filesize (error $errno))) )
ctx: A mutable reference to the function environment.
sock: The file descriptor of the socket to send on.
in_fd: The file descriptor of the open file that has the data to be transmitted.
offset: The offset into the file to start reading at.
count: The number of bytes to be sent.
ret_sent: A pointer to store the number of bytes transmitted.
The function returns a
Result containing an
Errno value. If the operation is successful,
Errno::Success is returned. Otherwise, an appropriate
Errno value indicating the error is returned.
sock_send_file()function sends the entire contents of a file down a socket.
- It starts reading from the specified offset within the file.
countparameter specifies the number of bytes to be sent. It is decremented as data is transmitted.
- The function enters a loop to process the data in chunks. Each chunk is read from the file and sent over the socket.
- The function supports reading data from different types of files, including regular files, standard input, and pipes.
- The specific behavior of the
sock_send_file()function may vary depending on the runtime environment and underlying networking implementation.