Universal Messaging C# .NET: Peer to Peer Stream-based Clients
Universal Messaging Peer to Peer Stream-based Services communicate via input and output streams on both the Stream-based Client and the Stream-based Server Service.
Anything written to the output stream of the Stream-based Service Client is received via the input stream of the Stream-based Server Service and vice versa.
Creating a Stream-based Client
The nServiceFactory object establishes a connection with the Universal Messaging Realm, and is the factory object from which we can find our Service, or obtain a list of available Services:
String[] RNAME=({"nsp://127.0.0.1:9000"});
nSessionAttributes nsa = new nSessionAttributes(RNAME);
nServiceFactory factory = new nServiceFactory( nsa );
nServiceInfo info = factory.findService("example");
nEventService serv = (nEventService)factory.connectToService( info );
Once the Client has connected to an instance of a Server Service, the developer's custom business logic can then be applied.
Writing Client Data to a Stream-based Server Service
Once a client has connected to a Service, the client can write data to the Service. The client can obtain a reference to the Service's Output Stream object and then write to it as follows:
Stream oStream = serv.getOutputStream();
oStream.write((new UTF8Encoding()).GetBytes("Hello World"));
oStream.flush();
Receiving Responses from a Stream-based Server Service
To receive responses from the Service, the client must first obtain a reference to the Service's Input Stream object, and then read from it as follows:
Stream iStream = serv.getInputStream();
byte[] buff = new byte[ 100 ];
try {
int i = 0;
while ((i = iStream.ReadByte()) != -1)
{
Console.Write((char)i);
}
} catch ( Exception ex ) {
}
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