私は、グーグル検索、グーグルクロームで「net :: ERR_EMPTY_RESPONSE」エラーを受け取り、Operaで「リモートサーバーによって接続が閉じられました」を除いてすべてが機能する単純なHTTPプロキシサーバーを作成しました。私はそれを解決する方法についてもう考えがありません。私たちを手伝ってくれますか？
import java.io.*;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.channels.*;
import java.nio.charset.*;
import java.net.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;
public class Server <Parametr>{
private Calendar current;
private DateFormat dformat;
private int localport = 0;
private int remoteport = 80;
private String remoteAddress = "127.0.0.1";
private Proxy proxy;
private ServerSocketChannel servsocketchannel;
private boolean local = false;
public Server(int port){
setServerPort(port);
openServerPort();
checkAndSetRemoteProxyServer();
dformat = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
current = Calendar.getInstance();
createServerSocketAndTalk();
}
public void setServerPort(int port){
this.localport = port;
}
public void setProxyAddressAndPort(int port, String address){
this.remoteport = port;
this.remoteAddress = address;
}
public void openServerPort(){
try {
servsocketchannel = ServerSocketChannel.open();
servsocketchannel.socket().bind(new java.net.InetSocketAddress(localport));
} catch (BindException exc) {
System.out.println("Server isn't started, local port is blocked or used, check firewall or set new port");
} catch (IOException e){
System.out.println("Server isn't started, local port is blocked or used, check firewall or set new port");
}
}
public void checkAndSetRemoteProxyServer(){
boolean ERROR = false;
Socket proxysocketchannel = null;
try {
proxysocketchannel = new Socket(remoteAddress, remoteport);
} catch (UnknownHostException ex) {
System.out.println("Proxy server address is probably offline, please provide new server address --- RUNNING LOCAL PROXY MODE");
ERROR = true;
} catch (IOException exc) {
System.out.println("Connecting to the proxy server failed, please review address and port --- RUNNING LOCAL PROXY MODE");
ERROR = true;
}
if(!ERROR){
System.out.println("Proxy state - online");
proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(remoteAddress, remoteport));
System.out.println("Initialization successful - waiting for clients ");
}
else{
System.out.println("Problem with proxy connection, check your settings or set new proxy address --- RUNNING LOCAL PROXY MODE");
System.out.println("Proxy local mode initialization successful - waiting for clients ");
local = true;
}
}
public void createServerSocketAndTalk(){
try {
while(servsocketchannel.isOpen()){
Runnable r = new ClientHandler(servsocketchannel.accept());
Thread t = new Thread(r);
t.start();
}
}catch(NotYetBoundException exc){
System.out.println("Server not started local port is already used, please choose new local port");
}catch (AsynchronousCloseException ex) {
System.out.println("Server Closed");
}
catch (IOException e) {
e.printStackTrace();
}
}
class ClientHandler implements Runnable{
SocketChannel client = null;
private static final int BUFFER_SIZE = 32768;
public ClientHandler(SocketChannel client){
this.client = client;
}
@Override
public void run() {
letsTalk();
try {
this.finalize();
} catch (Throwable e) {
e.printStackTrace();
}
}
public void letsTalk(){
while(true){
if(client.socket().isClosed()){
break;
}
BufferedReader clientin = null;
DataOutputStream clientout = null;
try {
clientin = new BufferedReader(new InputStreamReader(client.socket().getInputStream()));
clientout = new DataOutputStream(client.socket().getOutputStream());
} catch (IOException e) {
System.out.println("Error with client connection");
break;
}
String inputline;
String url = "";
try {
while((inputline = clientin.readLine()) != null){
System.out.println(inputline);
StringTokenizer readerclient = new StringTokenizer(inputline);
if(readerclient.nextToken().equals("GET")){
url = readerclient.nextToken();
System.out.println("Requested URL: " + url);
break;
}
if(readerclient.nextToken().equals("POST")){
System.out.println("POST");
}
}
} catch (IOException e) {
System.out.println("URL REQUEST ERROR");
e.printStackTrace();
} catch (NullPointerException exc){
}
try {
URL reqURL = new URL(url);
URLConnection connection = null;
if(local){
connection = reqURL.openConnection();
}
else {
connection = reqURL.openConnection(proxy);
}
connection.setDoInput(true);
connection.setDoOutput(false);
InputStream is = null;
is = connection.getInputStream();
byte by[] = new byte[ BUFFER_SIZE ];
int index = is.read( by, 0, BUFFER_SIZE );
while ( index != -1 ){
clientout.write( by, 0, index );
index = is.read( by, 0, BUFFER_SIZE );
}
clientout.flush();
}catch(Exception ex){
}
try {
clientin.close();
clientout.close();
// client.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}