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UDP support for IOCP reactor
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interfaces)� isIPAddress�
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UDP port, listening for packets.
@ivar addressFamily: L{socket.AF_INET} or L{socket.AF_INET6}, depending on
whether this port is listening on an IPv4 address or an IPv6 address.
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Initialize with a numeric port to listen on.
N�i)�port�protocol�readBufferSize� interface� setLogStr�_connectedAddr�_setAddressFamilyr
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FileHandle�__init__�socket�
addressFamily�
socketType�_iocp�
maxAddrLen�fileno� bytearray�
addressBuffer�struct�calcsize�addressLengthBuffer)�selfr �protor �
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Port.__init__c C sD t | j�r tj| _dS t| j�rtj| _dS | jr t�| jd��dS )z8
Resolve address family for the socket.
znot an IPv4 or IPv6 addressN) r r r �AF_INET6r! r �AF_INETr �InvalidAddressError�r+ r1 r1 r2 r F s
��zPort._setAddressFamily�returnc C s2 | j d urd| jj� d| j � d�S d| jj� d�S )N�<z on �>z not connected>)r r � __class__r6 r1 r1 r2 �__repr__S s
z
Port.__repr__c C � | j S )z)
Return a socket object.
)r r6 r1 r1 r2 � getHandleY � zPort.getHandlec C s | � � | �� dS )z�
Create and bind my socket, and begin listening on it.
This is called on unserialization, and must be called after creating a
server to begin listening on the specified port.
N)� _bindSocket�_connectToProtocolr6 r1 r1 r2 �startListening_ s zPort.startListeningc C s | j �| j| j�S �N)r. � createSocketr! r" r6 r1 r1 r2 rC i � zPort.createSocketc
C s� z| � � }|�| j| jf� W n ty$ } z t�| j| j|��d }~ww |�� d | _t �
d| � | j �| jf � d| _
|| _| jj| _d S )N� z%s starting on %sT)rC �bindr r �OSErrorr �CannotListenError� getsocknamer r �msg�
_getLogPrefixr � connectedr r% �
getFileHandle)r+ r/ �ler1 r1 r2 r? l s ����zPort._bindSocketc C s$ | j �| � | �� | j�| � d S rB )r �makeConnection� startReadingr. �addActiveHandler6 r1 r1 r2 r@ � s zPort._connectToProtocolc C s$ | j r| �|||� | �� d S d S rB )�reading�
handleRead�doRead�r+ �rc�data�evtr1 r1 r2 �cbRead� s �z Port.cbReadc C s� |t jt jttfv r| jr| j�� d S d S |r(t� dt j
� |d�|f � d S z| j� t
|jd |� �t�|j�� W d S tyK t�� Y d S w )Nz error in recvfrom -- %s (%s)z
unknown error)�errno�WSAECONNREFUSED�
WSAECONNRESETr r r r �connectionRefusedr rJ � errorcode�get�datagramReceived�bytes�buffr# � makesockaddr� addr_buff�
BaseException�errrU r1 r1 r2 rS � s, ����
� �zPort.handleReadc C sv t �| j| �}| jd |_}| j |_}| j |_}t � | �
� ||||�\}}|r7|t kr9| � |||� d S d S d S �Nr )
r# �EventrY � _readBuffersrb r' rd r* �
addr_len_buff�recvfromrM r
rS )r+ rX rb rd rj rV rW r1 r1 r2 rT � s � �z Port.doReadc
C s� | j rW|d| j fv s J �z| j�|�W S tyV } z7|jd }|tjkr0| �|�W Y d}~S |tjkr:t �
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Write a datagram.
@param addr: should be a tuple (ip, port), can be None in connected
mode.
Nr zmessage too longz <broadcast>z0write() only accepts IP addresses, not hostnamesz*IPv6 port write() called with IPv4 addressz*IPv4 port write() called with IPv6 address)r r �sendrG �argsrZ �WSAEINTR�write� WSAEMSGSIZEr �MessageLengthErrorr[ r\ r r r r] r r r5 r! r3 r4 �sendto)r+ �datagram�addr�se�nor1 r1 r2 ro � sp
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Port.writec C s | � d�|�|� d S )N� )ro �join)r+ �seqrt r1 r1 r2 �
writeSequence� s zPort.writeSequencec C sH | j rtd��t|�st|�st�|d��||f| _ | j�||f� dS )z-
'Connect' to remote server.
z\already connected, reconnecting is not currently supported (talk to itamar if you want this)z not an IPv4 or IPv6 address.N)r � RuntimeErrorr r r r5 r �connect)r+ �hostr r1 r1 r2 r| � s �
z Port.connectc C s2 | � � | j�| � | jr| j�d| j� d S d S rg )� stopReadingr. �removeActiveHandlerL � callLater�connectionLostr6 r1 r1 r2 �_loseConnection� s
�zPort._loseConnectionc C s& | j r t�� }| _nd }| �� |S rB )rL r �Deferred�dr� )r+ �resultr1 r1 r2 �
stopListening s
zPort.stopListeningc C s t jdtdd� | �� d S )Nz-Please use stopListening() to disconnect port� )�
stacklevel)�warnings�warn�DeprecationWarningr� r6 r1 r1 r2 �loseConnection
s � zPort.loseConnectionc C sb t �d| j � d| _tj�| |� | j�� | j� � | `| `
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Cleans up my socket.
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r r� r �doStopr �closerM �hasattrr� �callback)r+ �reasonr1 r1 r2 r� s
�zPort.connectionLostc C s | � | j�}d| | _dS )zP
Initialize the C{logstr} attribute to be used by C{logPrefix}.
z%s (UDP)N)rK r �logstr)r+ � logPrefixr1 r1 r2 r $ s zPort.setLogStrc C r< )zK
Returns the name of my class, to prefix log entries with.
)r� r6 r1 r1 r2 r� + r> zPort.logPrefixc C sR | j �� }| jt jkrtjdg|�R � S | jt jkr'tjdg|dd� �R � S dS )z�
Return the local address of the UDP connection
@returns: the local address of the UDP connection
@rtype: L{IPv4Address} or L{IPv6Address}
�UDPNr� )r rI r! r4 r � IPv4Addressr3 � IPv6Address�r+ rt r1 r1 r2 �getHost1 s
�z Port.getHostc C s | j �t jt j|� dS )z�
Set whether this port may broadcast. This is disabled by default.
@param enabled: Whether the port may broadcast.
@type enabled: L{bool}
N)r �
setsockopt�
SOL_SOCKET� SO_BROADCAST)r+ �enabledr1 r1 r2 �setBroadcastAllowed> s zPort.setBroadcastAllowedc C s t | j�tjtj��S )z�
Checks if broadcast is currently allowed on this port.
@return: Whether this port may broadcast.
@rtype: L{bool}
)�boolr �
getsockoptr� r� r6 r1 r1 r2 �getBroadcastAllowedG s zPort.getBroadcastAllowed)r r NrB )&�__name__�
__module__� __qualname__�__doc__r r4 r! �
SOCK_DGRAMr" �dynamicReadBuffersr r �int�__annotations__r r �strr; r= rA rC r? r@ rY rS rT ro rz r| r� r� r� r� r r� r� r� r� r1 r1 r1 r2 r s:
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ddd�ZdS )�MulticastMixinz,
Implement multicast functionality.
c C s$ | j �t jt j�}t �t�d|��S )Nz@i)r r� �
IPPROTO_IP�IP_MULTICAST_IF� inet_ntoar( �pack)r+ r r1 r1 r2 �getOutgoingInterfaceV s z#MulticastMixin.getOutgoingInterfacec C s | j �|��| j�S )z.
Returns Deferred of success.
)r. �resolve� addCallback�
_setInterfacer� r1 r1 r2 �setOutgoingInterfaceZ s z#MulticastMixin.setOutgoingInterfacec C s" t �|�}| j �t jt j|� dS )NrE )r � inet_atonr� r� r� )r+ rt r r1 r1 r2 r� ` s
z MulticastMixin._setInterfacec C � | j �t jt j�S rB )r r� r� �IP_MULTICAST_LOOPr6 r1 r1 r2 �getLoopbackModee rD z MulticastMixin.getLoopbackModec C s( t �dt|��}| j�tjtj|� d S )N�b)r( r� r� r r� r� r� )r+ �moder1 r1 r2 �setLoopbackModeh s z MulticastMixin.setLoopbackModec C r� rB )r r� r� �IP_MULTICAST_TTLr6 r1 r1 r2 �getTTLl rD zMulticastMixin.getTTLc C s$ t �d|�}| j�tjtj|� d S )N�B)r( r� r r� r� r� )r+ �ttlr1 r1 r2 �setTTLo s zMulticastMixin.setTTLr c C � | j �|��| j|d�S )zF
Join a multicast group. Returns Deferred of success.
rE �r. r� r� �
_joinAddr1�r+ rt r r1 r1 r2 � joinGroups � zMulticastMixin.joinGroupc C s | j �|��| j||�S rB )r. r� r� �
_joinAddr2)r+ rt r rx r1 r1 r2 r� y s zMulticastMixin._joinAddr1c
C s� t �|�}t �|�}|rt j}nt j}z| j �t j||| � W d S tyA } zt�t j
||g|j �R � �W Y d }~S d }~ww rB ) r r� �IP_ADD_MEMBERSHIP�IP_DROP_MEMBERSHIPr� r� rG r �Failurer �MulticastJoinErrorrm )r+ r rt rx �cmd�er1 r1 r2 r� | s
(��zMulticastMixin._joinAddr2c C r� )zD
Leave multicast group, return Deferred of success.
r r� r� r1 r1 r2 �
leaveGroup� r� zMulticastMixin.leaveGroupN)r )r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r1 r1 r1 r2 r� Q s
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MulticastPortz.
UDP Port that supports multicasting.
r r NFc C s t �| |||||� || _d S rB )r r �listenMultiple)r+ r r, r r- r. r� r1 r1 r2 r � s
zMulticastPort.__init__c C sB t �| �}| jr |�tjtjd� ttd�r |�tjtjd� |S )NrE � SO_REUSEPORT) r rC r� r� r r� � SO_REUSEADDRr� r� )r+ r/ r1 r1 r2 rC � s
zMulticastPort.createSocket)r r NF)r� r� r� r� r rC r1 r1 r1 r2 r� � s
� r� )&r� rZ r r( r� �typingr �zope.interfacer �twisted.internetr r r r �twisted.internet.abstractr r � twisted.internet.iocpreactorr
r r# �"twisted.internet.iocpreactor.constr r
r �'twisted.internet.iocpreactor.interfacesr �twisted.pythonr r �IListeningPort�
IUDPTransport�
ISystemHandler r r� �IMulticastTransportr� r1 r1 r1 r2 �<module> s2 � 1>