Python socket 模块，getservbyname() 实例源码

def init(self):
        """
        Method used to setup the AOS-server URL given the `server` and `port`
        arguments.

        Args:
            server (str): server-name/ip-address (does not include the http:// prefix)
            port (int): the AOS server port
        """
        target = self.session._target
        res = urlparse(target)
        if res.scheme:
            self.server = res.hostname
            self.port = res.port or socket.getservbyname(res.scheme)
            self.url = target + "/api"
        else:
            raise ValueError("AOS-server target(%s) not a proper URL" %
                             target)

def heart_beat():
    count = 0
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    try:
        port = int(PORT)
    except ValueError:
        port = socket.getservbyname(PORT, 'udp')
    s.connect((HOST, port))
    s.settimeout(5)
    while True:
        try:
            s.sendall(b'#Hi')
            count += 1
            print('Send a heart beat', count)
            time.sleep(10)    # Set your heart beat delay
        except KeyboardInterrupt:
            sys.exit(1)
        except:
            continue

def test():
    """Test program for telnetlib.

    Usage: python telnetlib.py [-d] ... [host [port]]

    Default host is localhost; default port is 23.

    """
    debuglevel = 0
    while sys.argv[1:] and sys.argv[1] == '-d':
        debuglevel = debuglevel+1
        del sys.argv[1]
    host = 'localhost'
    if sys.argv[1:]:
        host = sys.argv[1]
    port = 0
    if sys.argv[2:]:
        portstr = sys.argv[2]
        try:
            port = int(portstr)
        except ValueError:
            port = socket.getservbyname(portstr, 'tcp')
    tn = Telnet()
    tn.set_debuglevel(debuglevel)
    tn.open(host, port, timeout=0.5)
    tn.interact()
    tn.close()

def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = bytearray()
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append(0)
            bitmap[i] = bitmap[i] | (0x80 >> (serv % 8))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def __init__(self, host, port, factory, timeout, bindAddress, reactor=None):
        self.host = host
        if isinstance(port, types.StringTypes):
            try:
                port = socket.getservbyname(port, 'tcp')
            except socket.error, e:
                raise error.ServiceNameUnknownError(string="%s (%r)" % (e, port))
        self.port = port
        self.bindAddress = bindAddress
        base.BaseConnector.__init__(self, factory, timeout, reactor)

def prepareAddress(self):
        host, port = self.addr
        if iocpdebug.debug:
            print "connecting to (%s, %s)" % (host, port)
        if isinstance(port, types.StringTypes):
            try:
                port = socket.getservbyname(port, 'tcp')
            except socket.error, e:
                raise error.ServiceNameUnknownError(string=str(e))
        self.addr= (host, port)

def testConnectByService(self):
        serv = socket.getservbyname
        d = defer.succeed(None)
        try:
            s = MyServerFactory()
            port = reactor.listenTCP(0, s, interface="127.0.0.1")
            self.n = port.getHost().port
            socket.getservbyname = (lambda s, p,n=self.n:
                                    s == 'http' and p == 'tcp' and n or 10)
            self.ports.append(port)
            cf = MyClientFactory()
            try:
                c = reactor.connectTCP('127.0.0.1', 'http', cf)
            except:
                socket.getservbyname = serv
                raise

            d = loopUntil(
                lambda: (getattr(s, 'protocol', None) is not None and
                         getattr(cf, 'protocol', None) is not None))
            d.addBoth(lambda x:
                      self.cleanPorts(port, c.transport, cf.protocol.transport))
        finally:
            socket.getservbyname = serv
        d.addCallback(lambda x : self.assert_(s.called,
                                              '%s was not called' % (s,)))
        return d

def test():
    """Test program for telnetlib.

    Usage: python telnetlib.py [-d] ... [host [port]]

    Default host is localhost; default port is 23.

    """
    debuglevel = 0
    while sys.argv[1:] and sys.argv[1] == '-d':
        debuglevel = debuglevel+1
        del sys.argv[1]
    host = 'localhost'
    if sys.argv[1:]:
        host = sys.argv[1]
    port = 0
    if sys.argv[2:]:
        portstr = sys.argv[2]
        try:
            port = int(portstr)
        except ValueError:
            port = socket.getservbyname(portstr, 'tcp')
    tn = Telnet()
    tn.set_debuglevel(debuglevel)
    tn.open(host, port, timeout=0.5)
    tn.interact()
    tn.close()

def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = []
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append('\x00')
            bitmap[i] = chr(ord(bitmap[i]) | (0x80 >> (serv % 8)))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = []
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append('\x00')
            bitmap[i] = chr(ord(bitmap[i]) | (0x80 >> (serv % 8)))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = []
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append('\x00')
            bitmap[i] = chr(ord(bitmap[i]) | (0x80 >> (serv % 8)))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = bytearray()
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append(0)
            bitmap[i] = bitmap[i] | (0x80 >> (serv % 8))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def testGetServBy(self):
        eq = self.assertEqual
        # Find one service that exists, then check all the related interfaces.
        # I've ordered this by protocols that have both a tcp and udp
        # protocol, at least for modern Linuxes.
        if (sys.platform.startswith('linux') or
            sys.platform.startswith('freebsd') or
            sys.platform.startswith('netbsd') or
            sys.platform == 'darwin'):
            # avoid the 'echo' service on this platform, as there is an
            # assumption breaking non-standard port/protocol entry
            services = ('daytime', 'qotd', 'domain')
        else:
            services = ('echo', 'daytime', 'domain')
        for service in services:
            try:
                port = socket.getservbyname(service, 'tcp')
                break
            except socket.error:
                pass
        else:
            raise socket.error
        # Try same call with optional protocol omitted
        port2 = socket.getservbyname(service)
        eq(port, port2)
        # Try udp, but don't barf it it doesn't exist
        try:
            udpport = socket.getservbyname(service, 'udp')
        except socket.error:
            udpport = None
        else:
            eq(udpport, port)
        # Now make sure the lookup by port returns the same service name
        eq(socket.getservbyport(port2), service)
        eq(socket.getservbyport(port, 'tcp'), service)
        if udpport is not None:
            eq(socket.getservbyport(udpport, 'udp'), service)
        # Make sure getservbyport does not accept out of range ports.
        self.assertRaises((OverflowError, ValueError), socket.getservbyport, -1)
        self.assertRaises((OverflowError, ValueError), socket.getservbyport, 65536)

def test():
    """Test program for telnetlib.

    Usage: python telnetlib.py [-d] ... [host [port]]

    Default host is localhost; default port is 23.

    """
    debuglevel = 0
    while sys.argv[1:] and sys.argv[1] == '-d':
        debuglevel = debuglevel+1
        del sys.argv[1]
    host = 'localhost'
    if sys.argv[1:]:
        host = sys.argv[1]
    port = 0
    if sys.argv[2:]:
        portstr = sys.argv[2]
        try:
            port = int(portstr)
        except ValueError:
            port = socket.getservbyname(portstr, 'tcp')
    tn = Telnet()
    tn.set_debuglevel(debuglevel)
    tn.open(host, port, timeout=0.5)
    tn.interact()
    tn.close()

def testGetServBy(self):
        eq = self.assertEqual
        # Find one service that exists, then check all the related interfaces.
        # I've ordered this by protocols that have both a tcp and udp
        # protocol, at least for modern Linuxes.
        if (sys.platform.startswith('linux') or
            sys.platform.startswith('freebsd') or
            sys.platform.startswith('netbsd') or
            sys.platform == 'darwin'):
            # avoid the 'echo' service on this platform, as there is an
            # assumption breaking non-standard port/protocol entry
            services = ('daytime', 'qotd', 'domain')
        else:
            services = ('echo', 'daytime', 'domain')
        for service in services:
            try:
                port = socket.getservbyname(service, 'tcp')
                break
            except socket.error:
                pass
        else:
            raise socket.error
        # Try same call with optional protocol omitted
        port2 = socket.getservbyname(service)
        eq(port, port2)
        # Try udp, but don't barf if it doesn't exist
        try:
            udpport = socket.getservbyname(service, 'udp')
        except socket.error:
            udpport = None
        else:
            eq(udpport, port)
        # Now make sure the lookup by port returns the same service name
        eq(socket.getservbyport(port2), service)
        eq(socket.getservbyport(port, 'tcp'), service)
        if udpport is not None:
            eq(socket.getservbyport(udpport, 'udp'), service)
        # Make sure getservbyport does not accept out of range ports.
        self.assertRaises(OverflowError, socket.getservbyport, -1)
        self.assertRaises(OverflowError, socket.getservbyport, 65536)

def test():
    """Test program for telnetlib.

    Usage: python telnetlib.py [-d] ... [host [port]]

    Default host is localhost; default port is 23.

    """
    debuglevel = 0
    while sys.argv[1:] and sys.argv[1] == '-d':
        debuglevel = debuglevel+1
        del sys.argv[1]
    host = 'localhost'
    if sys.argv[1:]:
        host = sys.argv[1]
    port = 0
    if sys.argv[2:]:
        portstr = sys.argv[2]
        try:
            port = int(portstr)
        except ValueError:
            port = socket.getservbyname(portstr, 'tcp')
    tn = Telnet()
    tn.set_debuglevel(debuglevel)
    tn.open(host, port, timeout=0.5)
    tn.interact()
    tn.close()

def testGetServBy(self):
        eq = self.assertEqual
        # Find one service that exists, then check all the related interfaces.
        # I've ordered this by protocols that have both a tcp and udp
        # protocol, at least for modern Linuxes.
        if (sys.platform.startswith('linux') or
            sys.platform.startswith('freebsd') or
            sys.platform.startswith('netbsd') or
            sys.platform == 'darwin'):
            # avoid the 'echo' service on this platform, as there is an
            # assumption breaking non-standard port/protocol entry
            services = ('daytime', 'qotd', 'domain')
        else:
            services = ('echo', 'daytime', 'domain')
        for service in services:
            try:
                port = socket.getservbyname(service, 'tcp')
                break
            except socket.error:
                pass
        else:
            raise socket.error
        # Try same call with optional protocol omitted
        port2 = socket.getservbyname(service)
        eq(port, port2)
        # Try udp, but don't barf if it doesn't exist
        try:
            udpport = socket.getservbyname(service, 'udp')
        except socket.error:
            udpport = None
        else:
            eq(udpport, port)
        # Now make sure the lookup by port returns the same service name
        eq(socket.getservbyport(port2), service)
        eq(socket.getservbyport(port, 'tcp'), service)
        if udpport is not None:
            eq(socket.getservbyport(udpport, 'udp'), service)
        # Make sure getservbyport does not accept out of range ports.
        self.assertRaises(OverflowError, socket.getservbyport, -1)
        self.assertRaises(OverflowError, socket.getservbyport, 65536)

def test():
    """Test program for telnetlib.

    Usage: python telnetlib.py [-d] ... [host [port]]

    Default host is localhost; default port is 23.

    """
    debuglevel = 0
    while sys.argv[1:] and sys.argv[1] == '-d':
        debuglevel = debuglevel+1
        del sys.argv[1]
    host = 'localhost'
    if sys.argv[1:]:
        host = sys.argv[1]
    port = 0
    if sys.argv[2:]:
        portstr = sys.argv[2]
        try:
            port = int(portstr)
        except ValueError:
            port = socket.getservbyname(portstr, 'tcp')
    tn = Telnet()
    tn.set_debuglevel(debuglevel)
    tn.open(host, port, timeout=0.5)
    tn.interact()
    tn.close()

def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = bytearray()
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append(0)
            bitmap[i] = bitmap[i] | (0x80 >> (serv % 8))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def __init__(self, host, port, factory, timeout, bindAddress, reactor=None):
        self.host = host
        if isinstance(port, types.StringTypes):
            try:
                port = socket.getservbyname(port, 'tcp')
            except socket.error, e:
                raise error.ServiceNameUnknownError(string="%s (%r)" % (e, port))
        self.port = port
        self.bindAddress = bindAddress
        base.BaseConnector.__init__(self, factory, timeout, reactor)

def prepareAddress(self):
        host, port = self.addr
        if iocpdebug.debug:
            print "connecting to (%s, %s)" % (host, port)
        if isinstance(port, types.StringTypes):
            try:
                port = socket.getservbyname(port, 'tcp')
            except socket.error, e:
                raise error.ServiceNameUnknownError(string=str(e))
        self.addr= (host, port)

def testConnectByService(self):
        serv = socket.getservbyname
        d = defer.succeed(None)
        try:
            s = MyServerFactory()
            port = reactor.listenTCP(0, s, interface="127.0.0.1")
            self.n = port.getHost().port
            socket.getservbyname = (lambda s, p,n=self.n:
                                    s == 'http' and p == 'tcp' and n or 10)
            self.ports.append(port)
            cf = MyClientFactory()
            try:
                c = reactor.connectTCP('127.0.0.1', 'http', cf)
            except:
                socket.getservbyname = serv
                raise

            d = loopUntil(
                lambda: (getattr(s, 'protocol', None) is not None and
                         getattr(cf, 'protocol', None) is not None))
            d.addBoth(lambda x:
                      self.cleanPorts(port, c.transport, cf.protocol.transport))
        finally:
            socket.getservbyname = serv
        d.addCallback(lambda x : self.assert_(s.called,
                                              '%s was not called' % (s,)))
        return d

def test():
    """Test program for telnetlib.

    Usage: python telnetlib.py [-d] ... [host [port]]

    Default host is localhost; default port is 23.

    """
    debuglevel = 0
    while sys.argv[1:] and sys.argv[1] == '-d':
        debuglevel = debuglevel+1
        del sys.argv[1]
    host = 'localhost'
    if sys.argv[1:]:
        host = sys.argv[1]
    port = 0
    if sys.argv[2:]:
        portstr = sys.argv[2]
        try:
            port = int(portstr)
        except ValueError:
            port = socket.getservbyname(portstr, 'tcp')
    tn = Telnet()
    tn.set_debuglevel(debuglevel)
    tn.open(host, port, timeout=0.5)
    tn.interact()
    tn.close()

def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = []
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append('\x00')
            bitmap[i] = chr(ord(bitmap[i]) | (0x80 >> (serv % 8)))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def testGetServBy(self):
        eq = self.assertEqual
        # Find one service that exists, then check all the related interfaces.
        # I've ordered this by protocols that have both a tcp and udp
        # protocol, at least for modern Linuxes.
        if (sys.platform.startswith(('freebsd', 'netbsd'))
            or sys.platform in ('linux', 'darwin')):
            # avoid the 'echo' service on this platform, as there is an
            # assumption breaking non-standard port/protocol entry
            services = ('daytime', 'qotd', 'domain')
        else:
            services = ('echo', 'daytime', 'domain')
        for service in services:
            try:
                port = socket.getservbyname(service, 'tcp')
                break
            except socket.error:
                pass
        else:
            raise socket.error
        # Try same call with optional protocol omitted
        port2 = socket.getservbyname(service)
        eq(port, port2)
        # Try udp, but don't barf if it doesn't exist
        try:
            udpport = socket.getservbyname(service, 'udp')
        except socket.error:
            udpport = None
        else:
            eq(udpport, port)
        # Now make sure the lookup by port returns the same service name
        eq(socket.getservbyport(port2), service)
        eq(socket.getservbyport(port, 'tcp'), service)
        if udpport is not None:
            eq(socket.getservbyport(udpport, 'udp'), service)
        # Make sure getservbyport does not accept out of range ports.
        self.assertRaises(OverflowError, socket.getservbyport, -1)
        self.assertRaises(OverflowError, socket.getservbyport, 65536)

def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = bytearray()
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append(0)
            bitmap[i] = bitmap[i] | (0x80 >> (serv % 8))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = []
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append('\x00')
            bitmap[i] = chr(ord(bitmap[i]) | (0x80 >> (serv % 8)))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = []
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append('\x00')
            bitmap[i] = chr(ord(bitmap[i]) | (0x80 >> (serv % 8)))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def testGetServBy(self):
        eq = self.assertEqual
        # Find one service that exists, then check all the related interfaces.
        # I've ordered this by protocols that have both a tcp and udp
        # protocol, at least for modern Linuxes.
        if (sys.platform.startswith('linux') or
            sys.platform.startswith('freebsd') or
            sys.platform.startswith('netbsd') or
            sys.platform == 'darwin'):
            # avoid the 'echo' service on this platform, as there is an
            # assumption breaking non-standard port/protocol entry
            services = ('daytime', 'qotd', 'domain')
        else:
            services = ('echo', 'daytime', 'domain')
        for service in services:
            try:
                port = socket.getservbyname(service, 'tcp')
                break
            except socket.error:
                pass
        else:
            raise socket.error
        # Try same call with optional protocol omitted
        port2 = socket.getservbyname(service)
        eq(port, port2)
        # Try udp, but don't barf if it doesn't exist
        try:
            udpport = socket.getservbyname(service, 'udp')
        except socket.error:
            udpport = None
        else:
            eq(udpport, port)
        # Now make sure the lookup by port returns the same service name
        eq(socket.getservbyport(port2), service)
        eq(socket.getservbyport(port, 'tcp'), service)
        if udpport is not None:
            eq(socket.getservbyport(udpport, 'udp'), service)
        # Make sure getservbyport does not accept out of range ports.
        self.assertRaises((OverflowError, ValueError), socket.getservbyport, -1)
        self.assertRaises((OverflowError, ValueError), socket.getservbyport, 65536)

def test():
    """Test program for telnetlib.

    Usage: python telnetlib.py [-d] ... [host [port]]

    Default host is localhost; default port is 23.

    """
    debuglevel = 0
    while sys.argv[1:] and sys.argv[1] == '-d':
        debuglevel = debuglevel+1
        del sys.argv[1]
    host = 'localhost'
    if sys.argv[1:]:
        host = sys.argv[1]
    port = 0
    if sys.argv[2:]:
        portstr = sys.argv[2]
        try:
            port = int(portstr)
        except ValueError:
            port = socket.getservbyname(portstr, 'tcp')
    tn = Telnet()
    tn.set_debuglevel(debuglevel)
    tn.open(host, port, timeout=0.5)
    tn.interact()
    tn.close()

def testGetServBy(self):
        eq = self.assertEqual
        # Find one service that exists, then check all the related interfaces.
        # I've ordered this by protocols that have both a tcp and udp
        # protocol, at least for modern Linuxes.
        if (sys.platform.startswith(('freebsd', 'netbsd', 'gnukfreebsd'))
            or sys.platform in ('linux', 'darwin')):
            # avoid the 'echo' service on this platform, as there is an
            # assumption breaking non-standard port/protocol entry
            services = ('daytime', 'qotd', 'domain')
        else:
            services = ('echo', 'daytime', 'domain')
        for service in services:
            try:
                port = socket.getservbyname(service, 'tcp')
                break
            except OSError:
                pass
        else:
            raise OSError
        # Try same call with optional protocol omitted
        port2 = socket.getservbyname(service)
        eq(port, port2)
        # Try udp, but don't barf if it doesn't exist
        try:
            udpport = socket.getservbyname(service, 'udp')
        except OSError:
            udpport = None
        else:
            eq(udpport, port)
        # Now make sure the lookup by port returns the same service name
        eq(socket.getservbyport(port2), service)
        eq(socket.getservbyport(port, 'tcp'), service)
        if udpport is not None:
            eq(socket.getservbyport(udpport, 'udp'), service)
        # Make sure getservbyport does not accept out of range ports.
        self.assertRaises(OverflowError, socket.getservbyport, -1)
        self.assertRaises(OverflowError, socket.getservbyport, 65536)

def test():
    """Test program for telnetlib.

    Usage: python telnetlib.py [-d] ... [host [port]]

    Default host is localhost; default port is 23.

    """
    debuglevel = 0
    while sys.argv[1:] and sys.argv[1] == '-d':
        debuglevel = debuglevel+1
        del sys.argv[1]
    host = 'localhost'
    if sys.argv[1:]:
        host = sys.argv[1]
    port = 0
    if sys.argv[2:]:
        portstr = sys.argv[2]
        try:
            port = int(portstr)
        except ValueError:
            port = socket.getservbyname(portstr, 'tcp')
    tn = Telnet()
    tn.set_debuglevel(debuglevel)
    tn.open(host, port, timeout=0.5)
    tn.interact()
    tn.close()

def testGetServBy(self):
        eq = self.assertEqual
        # Find one service that exists, then check all the related interfaces.
        # I've ordered this by protocols that have both a tcp and udp
        # protocol, at least for modern Linuxes.
        if (sys.platform.startswith('linux') or
            sys.platform.startswith('freebsd') or
            sys.platform.startswith('netbsd') or
            sys.platform == 'darwin'):
            # avoid the 'echo' service on this platform, as there is an
            # assumption breaking non-standard port/protocol entry
            services = ('daytime', 'qotd', 'domain')
        else:
            services = ('echo', 'daytime', 'domain')
        for service in services:
            try:
                port = socket.getservbyname(service, 'tcp')
                break
            except socket.error:
                pass
        else:
            raise socket.error
        # Try same call with optional protocol omitted
        port2 = socket.getservbyname(service)
        eq(port, port2)
        # Try udp, but don't barf if it doesn't exist
        try:
            udpport = socket.getservbyname(service, 'udp')
        except socket.error:
            udpport = None
        else:
            eq(udpport, port)
        # Now make sure the lookup by port returns the same service name
        eq(socket.getservbyport(port2), service)
        eq(socket.getservbyport(port, 'tcp'), service)
        if udpport is not None:
            eq(socket.getservbyport(udpport, 'udp'), service)
        # Make sure getservbyport does not accept out of range ports.
        self.assertRaises(OverflowError, socket.getservbyport, -1)
        self.assertRaises(OverflowError, socket.getservbyport, 65536)

def test():
    """Test program for telnetlib.

    Usage: python telnetlib.py [-d] ... [host [port]]

    Default host is localhost; default port is 23.

    """
    debuglevel = 0
    while sys.argv[1:] and sys.argv[1] == '-d':
        debuglevel = debuglevel+1
        del sys.argv[1]
    host = 'localhost'
    if sys.argv[1:]:
        host = sys.argv[1]
    port = 0
    if sys.argv[2:]:
        portstr = sys.argv[2]
        try:
            port = int(portstr)
        except ValueError:
            port = socket.getservbyname(portstr, 'tcp')
    tn = Telnet()
    tn.set_debuglevel(debuglevel)
    tn.open(host, port, timeout=0.5)
    tn.interact()
    tn.close()

def test():
    """Test program for telnetlib.

    Usage: python telnetlib.py [-d] ... [host [port]]

    Default host is localhost; default port is 23.

    """
    debuglevel = 0
    while sys.argv[1:] and sys.argv[1] == '-d':
        debuglevel = debuglevel+1
        del sys.argv[1]
    host = 'localhost'
    if sys.argv[1:]:
        host = sys.argv[1]
    port = 0
    if sys.argv[2:]:
        portstr = sys.argv[2]
        try:
            port = int(portstr)
        except ValueError:
            port = socket.getservbyname(portstr, 'tcp')
    tn = Telnet()
    tn.set_debuglevel(debuglevel)
    tn.open(host, port, timeout=0.5)
    tn.interact()
    tn.close()

def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = bytearray()
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append(0)
            bitmap[i] = bitmap[i] | (0x80 >> (serv % 8))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = []
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append('\x00')
            bitmap[i] = chr(ord(bitmap[i]) | (0x80 >> (serv % 8)))
        bitmap = rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def __init__(self, host, port, factory, timeout, bindAddress, reactor=None):
        if isinstance(port, _portNameType):
            try:
                port = socket.getservbyname(port, 'tcp')
            except socket.error as e:
                raise error.ServiceNameUnknownError(string="%s (%r)" % (e, port))
        self.host, self.port = host, port
        if abstract.isIPv6Address(host):
            self._addressType = address.IPv6Address
        self.bindAddress = bindAddress
        base.BaseConnector.__init__(self, factory, timeout, reactor)

def test_connectByService(self):
        """
        L{IReactorTCP.connectTCP} accepts the name of a service instead of a
        port number and connects to the port number associated with that
        service, as defined by L{socket.getservbyname}.
        """
        serverFactory = MyServerFactory()
        serverConnMade = defer.Deferred()
        serverFactory.protocolConnectionMade = serverConnMade
        port = reactor.listenTCP(0, serverFactory, interface="127.0.0.1")
        self.addCleanup(port.stopListening)
        portNumber = port.getHost().port
        clientFactory = MyClientFactory()
        clientConnMade = defer.Deferred()
        clientFactory.protocolConnectionMade = clientConnMade

        def fakeGetServicePortByName(serviceName, protocolName):
            if serviceName == 'http' and protocolName == 'tcp':
                return portNumber
            return 10
        self.patch(socket, 'getservbyname', fakeGetServicePortByName)

        reactor.connectTCP('127.0.0.1', 'http', clientFactory)

        connMade = defer.gatherResults([serverConnMade, clientConnMade])
        def connected(result):
            serverProtocol, clientProtocol = result
            self.assertTrue(
                serverFactory.called,
                "Server factory was not called upon to build a protocol.")
            serverProtocol.transport.loseConnection()
            clientProtocol.transport.loseConnection()
        connMade.addCallback(connected)
        return connMade

def testGetServBy(self):
        eq = self.assertEqual
        # Find one service that exists, then check all the related interfaces.
        # I've ordered this by protocols that have both a tcp and udp
        # protocol, at least for modern Linuxes.
        if (sys.platform.startswith(('freebsd', 'netbsd', 'gnukfreebsd'))
            or sys.platform in ('linux', 'darwin')):
            # avoid the 'echo' service on this platform, as there is an
            # assumption breaking non-standard port/protocol entry
            services = ('daytime', 'qotd', 'domain')
        else:
            services = ('echo', 'daytime', 'domain')
        for service in services:
            try:
                port = socket.getservbyname(service, 'tcp')
                break
            except OSError:
                pass
        else:
            raise OSError
        # Try same call with optional protocol omitted
        port2 = socket.getservbyname(service)
        eq(port, port2)
        # Try udp, but don't barf if it doesn't exist
        try:
            udpport = socket.getservbyname(service, 'udp')
        except OSError:
            udpport = None
        else:
            eq(udpport, port)
        # Now make sure the lookup by port returns the same service name
        eq(socket.getservbyport(port2), service)
        eq(socket.getservbyport(port, 'tcp'), service)
        if udpport is not None:
            eq(socket.getservbyport(udpport, 'udp'), service)
        # Make sure getservbyport does not accept out of range ports.
        self.assertRaises(OverflowError, socket.getservbyport, -1)
        self.assertRaises(OverflowError, socket.getservbyport, 65536)

def test():
    """Test program for telnetlib.

    Usage: python telnetlib.py [-d] ... [host [port]]

    Default host is localhost; default port is 23.

    """
    debuglevel = 0
    while sys.argv[1:] and sys.argv[1] == '-d':
        debuglevel = debuglevel+1
        del sys.argv[1]
    host = 'localhost'
    if sys.argv[1:]:
        host = sys.argv[1]
    port = 0
    if sys.argv[2:]:
        portstr = sys.argv[2]
        try:
            port = int(portstr)
        except ValueError:
            port = socket.getservbyname(portstr, 'tcp')
    tn = Telnet()
    tn.set_debuglevel(debuglevel)
    tn.open(host, port, timeout=0.5)
    tn.interact()
    tn.close()

def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = []
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append('\x00')
            bitmap[i] = chr(ord(bitmap[i]) | (0x80 >> (serv % 8)))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = bytearray()
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append(0)
            bitmap[i] = bitmap[i] | (0x80 >> (serv % 8))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = bytearray()
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append(0)
            bitmap[i] = bitmap[i] | (0x80 >> (serv % 8))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)

def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
        address = tok.get_string()
        protocol = tok.get_string()
        if protocol.isdigit():
            protocol = int(protocol)
        else:
            protocol = socket.getprotobyname(protocol)
        bitmap = []
        while 1:
            token = tok.get().unescape()
            if token.is_eol_or_eof():
                break
            if token.value.isdigit():
                serv = int(token.value)
            else:
                if protocol != _proto_udp and protocol != _proto_tcp:
                    raise NotImplementedError("protocol must be TCP or UDP")
                if protocol == _proto_udp:
                    protocol_text = "udp"
                else:
                    protocol_text = "tcp"
                serv = socket.getservbyname(token.value, protocol_text)
            i = serv // 8
            l = len(bitmap)
            if l < i + 1:
                for j in xrange(l, i + 1):
                    bitmap.append('\x00')
            bitmap[i] = chr(ord(bitmap[i]) | (0x80 >> (serv % 8)))
        bitmap = dns.rdata._truncate_bitmap(bitmap)
        return cls(rdclass, rdtype, address, protocol, bitmap)