如何在Java中使用RUDP创建简单的服务器客户端应用程序?
我正在开发一个简单的应用程序,使用UDP在两台机器之间传输文件,但结果是有损且不可靠的,因此在搜索Internet时,我发现了这个名为simple Reliable UDP的项目,但他们没有任何文档或任何示例代码。因此,如果有人能帮我编写这段代码,我将不胜感激,因为我是Java新手。我开始编写简单的服务器客户端应用程序,但我已经得到了地址绑定异常。为了明确起见,我只想使用UDP连接,这就是我试图实现如何在Java中使用RUDP创建简单的服务器客户端应用程序?,java,sockets,udp,udpclient,rudp,Java,Sockets,Udp,Udpclient,Rudp,我正在开发一个简单的应用程序,使用UDP在两台机器之间传输文件,但结果是有损且不可靠的,因此在搜索Internet时,我发现了这个名为simple Reliable UDP的项目,但他们没有任何文档或任何示例代码。因此,如果有人能帮我编写这段代码,我将不胜感激,因为我是Java新手。我开始编写简单的服务器客户端应用程序,但我已经得到了地址绑定异常。为了明确起见,我只想使用UDP连接,这就是我试图实现ReliableServerSocket和ReliableSocket的原因 package
ReliableServerSocket
和ReliableSocket
的原因
package stackoverflow;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.logging.Level;
import java.util.logging.Logger;
import net.rudp.ReliableServerSocket;
import net.rudp.ReliableSocket;
/**
*
* @author Nika
*/
public class udpServer implements Runnable{
ReliableServerSocket rss;
///ocket rs;
ReliableSocket rs;
public udpServer() throws IOException {
rss= new ReliableServerSocket(9876);
}
public void run(){
while (true){
try {
rs=(ReliableSocket)rss.accept();
System.out.println("Connection Accepted");
System.out.println(""+rs.getInetAddress());
BufferedReader inReader = new BufferedReader (new InputStreamReader (rs.getInputStream()));
//BufferedWriter outReader = new BufferedWriter (new OutputStreamWriter (rs.getOutputStream()));
String str= ""+inReader.readLine();
if(str.contains("UPLOAD")){
System.out.println("Client wants to upload file");
}else if(str.contains("D1")){
System.out.println("Client wants to download file");
}
} catch (IOException ex) {
Logger.getLogger(udpServer.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
public static void main(String args[]) throws Exception
{
System.out.println("UDP Server Executed");
Thread t= new Thread( new udpServer());
t.start();
}
}
此处的客户端代码
package stackoverflow;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import net.rudp.ReliableSocket;
/**
*
* @author Nika
*/
public class UdpFileClient {
BufferedWriter outReader;
ReliableSocket server;
public UdpFileClient(boolean b1, boolean b2) throws IOException {
if (b1) {
server = new ReliableSocket("127.0.0.1", 9876);
outReader = new BufferedWriter(new OutputStreamWriter(server.getOutputStream()));
outReader.write("D1");
System.out.println("Download Req Sent From Client");
server.close();
outReader.flush();
outReader.close();
}
if (b2) {
server = new ReliableSocket("127.0.0.1", 9876);
outReader = new BufferedWriter(new OutputStreamWriter(server.getOutputStream()));
outReader.write("UPLOAD");
System.out.println("Upload Req Sent From Client");
server.close();
outReader.flush();
outReader.close();
}
}
public static void main(String args[]) throws Exception {
System.out.println("UDP CLient Executed");
new UdpFileClient(true, true);
}
}
我已经知道我可以使用TCP/IP,但是项目需要使用UDP。如果有任何其他方法以无损的方式发送文件,使用UDP以良好的速度发送也会很有帮助
提前谢谢 我尝试了RUDP,发现我没有打印输出,我知道这是一个愚蠢的错误 UDP客户端 包UDPClient
import java.io.IOException;
import java.io.InputStream;
import java.net.InetSocketAddress;
import net.rudp.ReliableSocket;
/**
*
* @author Nika
*/
public class UDPtestc {
ReliableSocket server;
public UDPtestc() throws IOException {
server = new ReliableSocket();
server.connect(new InetSocketAddress("127.0.0.1", 9876));
byte[] buffer = new byte[1024];
int count,progress=0;
InputStream in = server.getInputStream();
while((count=in.read(buffer)) >0){
progress+=count;
System.out.println(""+progress);
}
server.close();
}
public static void main(String[] args) throws IOException {
new UDPtestc();
}
}
UDPserver
package UDPServer;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.net.Socket;
import java.util.logging.Level;
import java.util.logging.Logger;
import net.rudp.ReliableServerSocket;
import net.rudp.ReliableSocket;
/**
*
* @author Nika
*/
public class UDPtests implements Runnable {
ReliableServerSocket rss;
ReliableSocket rs;
String file;
FileInputStream bin;
public UDPtests() throws IOException {
rss = new ReliableServerSocket(9876);
Thread serverthread = new Thread(this);
serverthread.start();
}
public void run() {
while (true) {
try {
rs = (ReliableSocket)rss.accept();
System.out.println("Connection Accepted");
System.out.println("" + rs.getRemoteSocketAddress());
file = "";
Long size=0L;
file += "10MB.txt";
size+=10*1024*1024;
RandomAccessFile r1= new RandomAccessFile(file,"rw");
r1.setLength(size);
byte[] sendData = new byte[1024];
OutputStream os = rs.getOutputStream();
//FileOutputStream wr = new FileOutputStream(new File(file));
bin= new FileInputStream(file);
int bytesReceived = 0;
int progress = 0;
while ((bytesReceived = bin.read(sendData)) > 0) {
/* Write to the file */
os.write(sendData, 0, bytesReceived);
progress += bytesReceived;
System.out.println(""+progress);
}
} catch (IOException ex) {
Logger.getLogger(udpServer.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
public static void main(String[] args) throws IOException {
new UDPtests();
}
}
如果可能的话,很快我会在RUDP上发布其他的TUT