parameters: (self, cmd, callback, blocksize=8192, rest=None)
return_statement: return self.voidresp()
docstring: 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.
docstring_summary: Retrieve data in binary mode.  A new port is created for you.
docstring_tokens: Retrieve data in binary mode . A new port is created for you .
function: 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 1:
                  data = conn.recv(blocksize)
                  if not data:
                      break
                  callback(data)
              # shutdown ssl layer
              if _SSLSocket is not None and isinstance(conn, _SSLSocket):
                  conn.unwrap()
          return self.voidresp()
function_tokens: def retrbinary ( self , cmd , callback , blocksize = 8192 , rest = None ) : self . voidcmd ( 'TYPE I' ) with self . transfercmd ( cmd , rest ) as conn : while 1 : data = conn . recv ( blocksize ) if not data : break callback ( data ) # shutdown ssl layer if _SSLSocket is not None and isinstance ( conn , _SSLSocket ) : conn . unwrap ( ) return self . voidresp ( )