, , Java. , , .
?
(instant messanger) . (MSN, ICQ, Skype . .), . , . , . , . ""?
IP-. . IP-, , IP- (, 64.104.137.158). , , (, www.quizful.net). , IP- .
. , 10 , , . : 10 1 . ? , , , . , . , , , , IP-, . IP- , ? ! . , ? ! " " . , , , . ( ). . : IP-, , -, , . , ( , ?). , , , :
|
|
|
IP- = .
- = , .
, :
IP- + - = _____
:
_____ = .
. , Google .
_____ !
, IP- . , . 64.104.137.58:80, 64.104.137.58 IP- 80 .
?
, . Java, . :
1) Java ( -, ). , .
2) , .
3) ;t ( , ).
4) , , . ? . , Java , , . 2 Server.java Client.java. , , .
Server.java
import java.net.*;
import java.io.*;
public class Server {
public static void main(String[] ar) {
int port = 6666; // ( 1025 65535)
try {
ServerSocket ss = new ServerSocket(port); //
System.out.println("Waiting for a client...");
Socket socket = ss.accept(); // -
System.out.println("Got a client:)... Finally, someone saw me through all the cover!");
System.out.println();
// , .
InputStream sin = socket.getInputStream();
OutputStream sout = socket.getOutputStream();
|
|
|
// , .
DataInputStream in = new DataInputStream(sin);
DataOutputStream out = new DataOutputStream(sout);
String line = null;
while(true) {
line = in.readUTF(); // .
System.out.println("The dumb client just sent me this line: " + line);
System.out.println("I'm sending it back...");
out.writeUTF(line); // .
out.flush(); // .
System.out.println("Waiting for the next line...");
System.out.println();
}
} catch(Exception x) { x.printStackTrace(); }
}
}
Client.java
import java.net.*;
import java.io.*;
public class Client {
public static void main(String[] ar) {
int serverPort = 6666; // .
String address = "127.0.0.1"; // IP- , .
// .
try {
InetAddress ipAddress = InetAddress.getByName(address); // IP-.
System.out.println("Any of you heard of a socket with IP address " + address + " and port " + serverPort + "?");
Socket socket = new Socket(ipAddress, serverPort); // IP- .
System.out.println("Yes! I just got hold of the program.");
// , .
InputStream sin = socket.getInputStream();
OutputStream sout = socket.getOutputStream();
// , .
DataInputStream in = new DataInputStream(sin);
DataOutputStream out = new DataOutputStream(sout);
// .
BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in));
String line = null;
System.out.println("Type in something and press enter. Will send it to the server and tell ya what it thinks.");
System.out.println();
while (true) {
line = keyboard.readLine(); // - Enter.
System.out.println("Sending this line to the server...");
out.writeUTF(line); // .
out.flush(); // .
line = in.readUTF(); // .
System.out.println("The server was very polite. It sent me this: " + line);
System.out.println("Looks like the server is pleased with us. Go ahead and enter more lines.");
System.out.println();
}
} catch (Exception x) {
x.printStackTrace();
}
}
}
:
javac Server.java Client.java
(DOS). :
java Server
:
java Client
.
, , Enter. . , Ctrl-C .
. , , .
:
ServerSocket ss = new ServerSocket(port);
Socket socket = ss.accept();
ServerSocket Socket. Socket . ServerSocket , . , , , accept(). . , . , Socket , . , Socket . , .
|
|
|
Socket . Socket , IP- . InetAddress IP- ( ). InetAddress :
InetAddress ipAddress = InetAddress.getByName(address);
, 127.0.0.1. . , IP- .
InetAddress, Socket:
Socket socket = new Socket(ipAddress, serverPort);
Socket , . , .
InputStream sin = socket.getInputStream();
OutputStream sout = socket.getOutputStream();
. String . .
DataInputStream in = new DataInputStream(sin);
DataOutputStream out = new DataOutputStream(sout);
( ). , , . , .
http://www.quizful.net/post/java-socket-programming
