test_smtplib.py 文件源码

def testSourceAddress(self):
        # connect
        port = support.find_unused_port()
        try:
            smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost',
                    timeout=3, source_address=('127.0.0.1', port))
            self.assertEqual(smtp.source_address, ('127.0.0.1', port))
            self.assertEqual(smtp.local_hostname, 'localhost')
            smtp.quit()
        except IOError as e:
            if e.errno == errno.EADDRINUSE:
                self.skipTest("couldn't bind to port %d" % port)
            raise