Java Requires Chilkat v11.0.0+

SSL Server Example

See more Socket/SSL/TLS Examples

Demonstrates how to create an SSL socket for accepting connections. This example is *very* simple in that it will create an SSL socket for accepting a single connection. It will read a message from the client, send a reply, and exit. Chilkat2 Java

import com.chilkatsoft.chilkat2.Cert;
import com.chilkatsoft.chilkat2.CertStore;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Socket;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Socket listenSslSocket = new Socket();

        // An SSL server needs a digital certificate.  This example loads it from a PFX file.

        // Create an instance of a certificate store object, load a PFX file,
        // locate the certificate we need, and use it.
        // (a PFX file may contain more than one certificate.)
        CertStore certStore = new CertStore();
        // The 1st argument is the filename, the 2nd arg is the
        // PFX file's password:
        try {
            certStore.loadPfxFile("chilkat.pfx", "test");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Find the certificate to be used for SSL:
        JsonObject jsonCN = new JsonObject();
        jsonCN.updateString("CN", "example.com");

        Cert cert = new Cert();
        try {
            certStore.findCert(jsonCN, cert);

            // Use the certificate:
            listenSslSocket.initSslServer(cert);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Bind and listen on a port:
        int myPort = 8123;
        // Allow for a max of 5 queued connect requests.
        int backLog = 5;
        try {
            listenSslSocket.bindAndListen(myPort, backLog);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // If accepting an SSL/TLS connection, the SSL handshake is part of the connection
        // establishment process. This involves a few back-and-forth messages between the
        // client and server to establish algorithms and a shared key to create the secure
        // channel. The sending and receiving of these messages are governed by the
        // MaxReadIdleMs and MaxSendIdleMs properties. If these properties are set to 0
        // (and this is the default unless changed by your application), then the
        // AcceptNext can hang indefinitely during the SSL handshake process.
        // Make sure these properties are set to appropriate values before calling AcceptNext.

        // Set a 10 second max for waiting to read/write.  This is for the SSL/TLS handshake establishment.
        listenSslSocket.setMaxReadIdleMs(10000);
        listenSslSocket.setMaxSendIdleMs(10000);

        // Accept a single client connection and establish the secure SSL/TLS channel:
        int maxWaitMillisec = 20000;
        Socket clientSock = new Socket();
        String receivedMsg;
        try {
            listenSslSocket.acceptNext(maxWaitMillisec, clientSock);

            // The client (in this example) is going to send a "Hello Server! -EOM-"
            // message.  Read it:
            receivedMsg = clientSock.receiveUntilMatch("-EOM-");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println(receivedMsg);

        // Send a "Hello Client! -EOM-" message:
        try {
            clientSock.sendString("Hello Client! -EOM-");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Close the connection with the client
        // Wait a max of 20 seconds (20000 millsec)
        clientSock.closeConnection(20000);
    }
}