tcpserver.java

Icarnegie university SSD8电子书和全部练习答案

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import java.net.*; 
import java.io.*; 

//TCPServer 
public class TCPServer{ 

public static final int SERVICE_PORT =8000; 

public static void main(String args[]){ 

try{ 

//Bind to the service port,to receive the package from the client 
ServerSocket server = new ServerSocket(SERVICE_PORT); 

System.out.println("Service started"); 

//Loop indefinitely,accepting client 

for(;;){ 

String requestMessageLine; 
//Get the next TCP Client 

Socket nextClient = server.accept(); 

//Display connection details 
System.out.println("Received request from " + nextClient.getInetAddress() + ":" + 
nextClient.getPort()); 

BufferedReader inFromClient = 
new BufferedReader(new InputStreamReader( 
nextClient.getInputStream())); 
DataOutputStream outToClient = 
new DataOutputStream(nextClient.getOutputStream()); 
requestMessageLine = inFromClient.readLine(); 
char[] array = requestMessageLine.toCharArray(); 
byte[] sendbuf = new byte[1]; 
sendbuf[0]= (byte)array[0]; 

outToClient.write(sendbuf,0,1); 

//close the connection 
nextClient.close(); 
} 
} 
catch(BindException be){ 

System.out.println("Service already running on port " + SERVICE_PORT); 
} 
catch(IOException ioe){ 

System.out.println("I/0 ERROR - " + ioe); 
} 

} 

}