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Class AcmeNet.Assn2.ClientServerNI

AcmeNet.Assn2.ClientServerNI

public class ClientServerNI

See Also:

Service, Connection

ClientServerNI()

Create a ClientServerNI at any available address.

ClientServerNI(NetAddress)

Create a ClientServerNI at a specified address.

bindService(int, Service)

Bind a service to a local service number.

connect(ServiceAddress)

Connect to a remote service.

enable()

The first call to this method "turns on" the processing of incoming packets.

getAddress()

Get the address of this ClientServerNI

getOutPacketStream(NetAddress)

Get a DataOutputStream that can be used to build a packet that will be sent via the underlying ReliableNI.

run()

Called by a daemon thread.

sendPing(NetAddress, int)

Send a Ping packet.

sendPong(NetAddress, int)

Send a Pong packet.

unbindService(int)

Unbind a service.

 public ClientServerNI()

Create a ClientServerNI at any available address.

 public ClientServerNI(NetAddress requiredAddress) throws AddressUnavailableException

Create a ClientServerNI at a specified address.

Parameters:

requiredAddress - the address to use

Throws: AddressUnavailableException

the requested address was not available

 public NetAddress getAddress()

Get the address of this ClientServerNI

Returns:

s the address of this ClientServerNI

 public synchronized void enable()

The first call to this method "turns on" the processing of incoming packets. Before this method is called, all incoming packets are accumulated; when this method is called, all accumulated packets are processed. Subsequent packets are processed immediately upon their arrival.

Multiple calls to this method are allowed, but only the first one has any effect.

 public Connection connect(ServiceAddress sa) throws IOException

Connect to a remote service.

Parameters:

sa - the address of the service to connect to

Returns:

a Connection to the requested service, or null if no connection could be made

Throws: IOException

some I/O error occurred

 public synchronized void bindService(int serviceNum,
                                      Service service) throws AlreadyBoundException

Bind a service to a local service number. This allows remote processes to connect to the service by specifying its NetAddress and service number.

Parameters:

serviceNum - the service number to bind to

service - the service to bind to that number

Throws: AlreadyBoundException

some other service is already bound to that serviceNumber

 public synchronized void unbindService(int serviceNum)

Unbind a service. If there is no service bound at the requested number, do nothing.

Parameters:

serviceNum - the service number which should be unbound

 public void run()

Called by a daemon thread. This method is responsible for grabbing incoming packets and doing whatever processing is required.

 DataOutputStream getOutPacketStream(NetAddress dest)

Get a DataOutputStream that can be used to build a packet that will be sent via the underlying ReliableNI. This method is for internal use and should not be called by clients.

Parameters:

the - destination of the newly created packet

Returns:

an output stream that can be used to build the packet

 void sendPing(NetAddress peerAddr,
               int peerConnNum) throws IOException

Send a Ping packet.

Parameters:

peerAddr - the address to send the packet to

peerConnNum - the remote connection number that is being pinged

Throws: IOException

some I/O error occurred

 void sendPong(NetAddress peerAddr,
               int peerConnNum) throws IOException

Send a Pong packet.

Parameters:

peerAddr - the address to send the packet to

peerConnNum - the remote connection number that is being ponged

Throws: IOException

some I/O error occurred

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