Method retrbinary

Lib/ftplib.py:421–442

Retrieve data in binary mode. A new port is created for you. Args: cmd: A RETR command. callback: A single parameter callable to be called on each block of data read. blocksize: The maximum number of bytes to read from the

(self, cmd, callback, blocksize=8192, rest=None)

        return resp

    def retrbinary(self, cmd, callback, blocksize=8192, rest=None):
        """Retrieve data in binary mode.  A new port is created for you.

        Args:
          cmd: A RETR command.
          callback: A single parameter callable to be called on each
                    block of data read.
          blocksize: The maximum number of bytes to read from the
                     socket at one time.  [default: 8192]
          rest: Passed to transfercmd().  [default: None]

        Returns:
          The response code.
        """
        self.voidcmd('TYPE I')
        with self.transfercmd(cmd, rest) as conn:
            while data := conn.recv(blocksize):
                callback(data)
            # shutdown ssl layer
            if _SSLSocket is not None and isinstance(conn, _SSLSocket):
                conn.unwrap()
        return self.voidresp()

    def retrlines(self, cmd, callback = None):
        """Retrieve data in line mode.  A new port is created for you.