test_functional_ssl.py 文件源码

def test_prot(self):
        self.client.login(secure=False)
        msg = "503 PROT not allowed on insecure control connection."
        self.assertRaisesWithMsg(ftplib.error_perm, msg,
                                 self.client.sendcmd, 'prot p')
        self.client.login(secure=True)
        # secured
        self.client.prot_p()
        sock = self.client.transfercmd('list')
        with contextlib.closing(sock):
            while True:
                if not sock.recv(1024):
                    self.client.voidresp()
                    break
            self.assertTrue(isinstance(sock, ssl.SSLSocket))
            # unsecured
            self.client.prot_c()
        sock = self.client.transfercmd('list')
        with contextlib.closing(sock):
            while True:
                if not sock.recv(1024):
                    self.client.voidresp()
                    break
            self.assertFalse(isinstance(sock, ssl.SSLSocket))