I am stuck in a serious place..., I am trying to create a secure server. So I had to modify my code to be able to send in a secure way, the problem is the following.
It displays me the error: javax.net.ssl.SSLException: Connection has closed: javax.net.ssl.SSLException: Unsupported or unrecognized SSL message
I already made a certificate via keytool but I don't have the impression that it works
I have looked everywhere but I can't find a solution to my problem...
Here are my codes:
Server :
System.setProperty("javax.net.ssl.keyStore", "test.store");
System.setProperty("javax.net.ssl.keyStorePassword", "password");
ServerSocketFactory serverSocketFactory =
ServerSocketFactory.getDefault();
ServerSocket serverSocket =
serverSocketFactory.createServerSocket(4444);
System.out.println("Started...");
while(true){
new ServerThread(serverSocket.accept()).start();
}
Client
System.setProperty("javax.net.ssl.trustStore", "test.store");
SocketFactory socketFactory = SSLSocketFactory.getDefault();
Socket socket = socketFactory.createSocket("localhost", 4444);
BufferedReader bf1 = new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter writer = new PrintWriter(socket.getOutputStream(), true);
BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
System.out.println("enter username");
writer.println(bf.readLine());
String message = null;
while(true){
System.out.println("enter message send to server");
message = bf.readLine();
if(message.equals("quit")){
socket.close();
break;
}
writer.println(message);
System.out.println("message from server : " + bf1.readLine());
}
I don't thing it is important to give you the serverThread cause it is not usefull.
Thank and have nice day :)
You server is not listening in SSL as you are calling the wrong factory. You would need SSLServerSocketFactory instead. Try
ServerSocketFactory serverSocketFactory = SSLServerSocketFactory.getDefault();
Related
I am trying to make raspberry listen to the java socket server. I run the server code with eclipse and then log in to raspberry desktop and run client.jar. When i run client.jar it does not connect to my server and does not throw any errors. It just 'stays' in the Lxterminal forever and does nothing.
Server
int port = 6666;
Inet4Address add = (Inet4Address) Inet4Address.getLocalHost();
System.err.println(add);
ServerSocket server = new ServerSocket(6666, 1, add);
Socket client = server.accept();
System.err.println("acc");
DataInputStream in = new DataInputStream(client.getInputStream());
DataOutputStream out = new DataOutputStream(client.getOutputStream());
while (true){
BufferedReader read = new BufferedReader(new InputStreamReader(System.in));
String line = read.readLine();
out.writeUTF(line);
out.flush();
System.err.println(in.readUTF());
}
Client
int port = 6666;
Socket server = new Socket("My ip", port);
DataInputStream in = new DataInputStream(server.getInputStream());
DataOutputStream out = new DataOutputStream(server.getOutputStream());
while (true)
{
String msg = in.readUTF();
if (msg.contentEquals("close"))
server.close();
else if (msg.equals("forward"))
{
out.writeUTF("I go forward master");
out.flush();
}
UPDATE:
I have resolved this problem few seconds ago.My firewall was blocking any connection so the raspberry couldn't connect.
Solution: Go to firewall and network connection and turn it off for private and public connections. I am using Win10
I have a working Java socket, but I need some help connecting to it with PHP.
My problem: I can connect to the Java socket from a Java client and send/receive messages, but when I try to connect to the same socket with PHP, it won't connect.
This is what I have for the socket in the while loop: (keep in mind this part works)
Socket socket = serverSocket.accept();
System.out.println("Got connection");
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
String cmd = in.readLine();
System.out.println("Received: " + cmd);
String response = "It worked. Received: " + cmd;
out.println(response);
...
And just to show the other half that works, this is the client:
Socket socket = new Socket("<ip>", port);
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
out.println("test msg");
out.flush();
System.out.println("Sent message");
String r = in.readLine();
System.out.println("Response: " + r);
Now for the part that doesn't work.
This is what I am doing to try and connect with PHP:
$s = fsockopen('<ip>', $port, $errno, $errstr, 25);
if (!$s) {
echo 'Error: '.$errstr;
die;
}
Running that outputs: "Error: Connection refused"
Does anyone know how I can diagnose why the PHP can't connect but the Java client can? They are both accessing the socket externally, and since the Java client can connect it's not blocked. Is there some protocol I forgot to set?
I've looked at dozens of other people with the same question but nobody has provided an answer.
Did you look in the php.ini if fsockopen is allowed ?
1、php.ini, look for line: disable_functions = fsockopen
2、php.ini, see allow_url_fopen = On or allow_url_fopen = Off
I'm creating a android proxy server and i use this for HTTP request :
Socket socket = new Socket(InetAddress.getByName("perdu.com"), 80);
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter out = new PrintWriter(socket.getOutputStream());
out.print("GET / HTTP/1.1\r\nHost: perdu.com\r\nConnection: close\r\n\r\n");
out.flush();
I doesn't work for HTTPS request, so my question is : How to replace this for SSL working and get server response ?
Thank you
PS: i'm french, sorry for my english :)
I found solution
SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory.getDefault();
SSLSocket socket = (SSLSocket) factory.createSocket(domain, 443);
socket.startHandshake();
BufferedReader in = new BufferedReader(new InpuStreamReader(socket.getInputStream()));
PrintWriter out = new PrintWriter(socket.getOutputStream());
My app is based on Sockets, but regular Sockets, not SSLSockets. Do I have to change all of them to SSL sockets to be able connect to https server?
You must change how the socket is created, by using the SSLSocketFactory, but you don't have to change all your datatypes from Socket to SSLSocket.
Yes i think you have to change for SSL, you can try that :
System.setProperty("javax.net.ssl.trustStore", "clienttrust");
SSLSocketFactory ssf = (SSLSocketFactory) SSLSocketFactory.getDefault();
Socket s = ssf.createSocket("127.0.0.1", 8888);
OutputStream outs = s.getOutputStream();
PrintStream out = new PrintStream(outs);
InputStream ins = s.getInputStream();
BufferedReader in = new BufferedReader(new InputStreamReader(ins));
out.println("Hi,How are u!");
out.println("");
String line = null;
while ((line = in.readLine()) != null) {
System.out.println(line);
}
in.close();
out.close();
it's from : http://www.java2s.com/Tutorial/Java/0490__Security/HttpsSocketClient.htm
Hope it helps !
I write FTPS server, and I have problems with ssl connection after AUTH TLS command.
Simple example:
try
{
int ServerPort = 21;
ServerSocket FtpExServer = new ServerSocket(ServerPort);
while(true)
{
Socket S = FtpExServer.accept();
InputStreamReader ISR = new InputStreamReader(S.getInputStream());
OutputStreamWriter OSW = new OutputStreamWriter(S.getOutputStream());
BufferedReader ClientSocketReader = new BufferedReader(ISR);
PrintWriter ClientSocketWriter = new PrintWriter(OSW, true);
ClientSocketWriter.println("220 Welcome to FTP server.");
print(ClientSocketReader.readLine());
ClientSocketWriter.println("234 AUTH TLS successful");
char[] passphrase = "pass".toCharArray();
char[] cpassphrase = "cpass".toCharArray();
KeyStore keystore = KeyStore.getInstance("JKS");
keystore.load(new FileInputStream("keystore.jks"), passphrase);
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
kmf.init(keystore, cpassphrase);
SSLContext context = SSLContext.getInstance("TLS");
KeyManager[] keyManagers = kmf.getKeyManagers();
context.init(keyManagers, null, null);
SSLServerSocketFactory ssf = context.getServerSocketFactory();
SSLServerSocket ss = (SSLServerSocket) ssf.createServerSocket(990);
ss.setSoTimeout(2000);
SSLSocket s = (SSLSocket)ss.accept();
ISR = new InputStreamReader(s.getInputStream());
OSW = new OutputStreamWriter(s.getOutputStream());
ClientSocketReader = new BufferedReader(ISR);
ClientSocketWriter = new PrintWriter(OSW, true);
ClientSocketWriter.println("234 AUTH TLS successful");
print(ClientSocketReader.readLine());
ClientSocketWriter.println("331 Password required for smie");
print(ClientSocketReader.readLine());
ClientSocketWriter.println("230 User smie logged in");
print(ClientSocketReader.readLine());
ClientSocketWriter.println("215 UNIX Type: L8");
print(ClientSocketReader.readLine());
ClientSocketWriter.println("550 Command not suported.");
}
}
catch(Exception e)
{
print(e);
}
Description: FTP client(for example MoveITFreely) connect to server on port 21. After send command "AUTH TLS", server send "234 AUTH TLS successful". Now client must to connect to server on port 990(?), but client dont connect and get timeout exception.
What i do wrong?
There exist two methods to add SSL to FTP.
First method is called implicit SSL. It means that the server is listening on port 990 and when the client connects to it, first SSL/TLS negotiation is performed, and then the established connection is used as a command channel for communication (for data channel SSL handshake is also performed in a similar manner).
Second method is what you attempt to use. It's called explicit SSL. The client connects on port 21, sends AUTH TLS and starts SSL negotiation on existing connection. Data channel can be secured or not secured depending on how you want it (you specify this using PROT command).
You mixed the methods. I suggest that you read detailed explanation in Wikipedia before going further. Then read RFC for explicit TLS.
Update: Also you'd need SSLClientSocket, not SSLServerSocket.