Run the example

  1. Install and run the device gateway
  2. Download the Java client library
  3. Copy the root certificate of the device gateway to your working directory. As default, the certificate(ca.crt) resides in cert of the installation directory.
  4. The example uses Gradle for its project. You can change the build.gradle file as needed.

  5. Change the gateway and the device information in src/main/java/com/supremainc/sdk/example/server/test/ServerTest.java as needed.

     // the path of the root certificate
 private static final String GATEWAY_CA_FILE = "cert/gateway/ca.crt";

 // the address of the gateway
 private static final String GATEWAY_ADDR = "192.168.0.2";
 private static final int GATEWAY_PORT = 4000;

 // the ip address of the target device
 private static final String DEVICE_ADDR = "192.168.0.110"; 
 private static final int DEVICE_PORT = 51211;

  6. Build.

     ./gradlew installDist

  7. Run.

     ./build/install/java/bin/serverTest

1. Connect to the gateway and the device

The example assumes you use the device gateway. For the master gateway or other connection options, refer to the Connect or ConnectMaster examples.

  GatewayClient client = new GatewayClient();
  client.connect(CA_FILE, GATEWAY_ADDR, GATEWAY_PORT);

  ConnectInfo connInfo = ConnectInfo.newBuilder().setIPAddr(DEVICE_ADDR).setPort(DEVICE_PORT).setUseSSL(DEVICE_USE_SSL).build();
  int deviceID = userTest.connectSvc.connect(connInfo);

2. Subscribe

To receive requests from devices, you have to configure the related options as described, first.

  AuthConfig testConfig = origConfig.toBuilder().setUseServerMatching(true).build();
  authSvc.setConfig(deviceID, testConfig);

Then, you have to subscribe to the request channel.

  subscriptionCtx = Context.current().withCancellation();
  restoreCtx = subscriptionCtx.attach();

  Iterator<ServerRequest> requestStream = serverSvc.subscribe(QUEUE_SIZE);

3. Handle verification requests

With server matching enabled, the device will send a verification request to the gateway when it reads a card. You can implement your own logic and return its result to the device using HandleVerify.

  while(requestStream.hasNext()) {
    ServerRequest req = requestStream.next();

    if(returnError) { // emulate authentication failure
      serverSvc.handleVerify(req, ServerErrorCode.VERIFY_FAIL, null);
    } else { // emulate authentication success
      ArrayList<CSNCardData> cards = new ArrayList<CSNCardData>();
      cards.add(CSNCardData.newBuilder().setData(req.getVerifyReq().getCardData()).build());

      UserInfo userInfo = UserInfo.newBuilder()
                            .setHdr(UserHdr.newBuilder().setID(TEST_USER_ID).setNumOfCard(1).build())
                            .addAllCards(cards)
                            .build();

      serverSvc.handleVerify(req, ServerErrorCode.SUCCESS, userInfo);
    }
  }

4. Handle identification requests

With server matching enabled, the device will send an identification request to the gateway when it reads a fingerprint. You can implement your own logic and return its result to the device using HandleIdentify.

  while(requestStream.hasNext()) {
    ServerRequest req = requestStream.next();

    if(returnError) { // emulate authentication failure
      serverSvc.handleIdentify(req, ServerErrorCode.IDENTIFY_FAIL, null);
    } else { // emulate authentication success
      ArrayList<FingerData> fingers = new ArrayList<FingerData>();
      fingers.add(FingerData.newBuilder().addTemplates(req.getIdentifyReq().getTemplateData()).addTemplates(req.getIdentifyReq().getTemplateData()).build());

      UserInfo userInfo = UserInfo.newBuilder()
                            .setHdr(UserHdr.newBuilder().setID(TEST_USER_ID).setNumOfFinger(1).build())
                            .addAllFingers(fingers)
                            .build();

      serverSvc.handleIdentify(req, ServerErrorCode.SUCCESS, userInfo);
    }
  }

Updated: