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Eclipse Milo™ - an open source implementation of OPC UA (IEC 62541).
http://www.eclipse.org/milo
Eclipse Public License 2.0
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Not able to Connect #611

Closed bellirodrigo2 closed 4 years ago

bellirodrigo2 commented 4 years ago

I'm trying to connect to a PROSYS OPC server simulator installed in the same machine. I'm following a tutorial from Using Maven w the following dependency

org.eclipse.milo sdk-client 0.3.8

I tried to disable the security, sign&Encrypt and all the policies See below the code and then the Exception I'm getting.

CODE: import org.eclipse.milo.opcua.sdk.client.OpcUaClient; import org.eclipse.milo.opcua.sdk.client.api.config.OpcUaClientConfigBuilder; import org.eclipse.milo.opcua.stack.client.DiscoveryClient; import org.eclipse.milo.opcua.stack.core.UaException; import org.eclipse.milo.opcua.stack.core.types.structured.EndpointDescription; import java.util.List; import java.util.concurrent.ExecutionException;

public class ClientTest {

public void createClient(String endPointURL)  {
    List<EndpointDescription> endPoints = null;
    try {
        endPoints = DiscoveryClient.getEndpoints(endPointURL).get();
    } catch (InterruptedException e) {
        e.printStackTrace();
        e.getMessage();
        e.getCause();
    } catch (ExecutionException e) {
        e.printStackTrace();
    }
    OpcUaClientConfigBuilder cfg = new OpcUaClientConfigBuilder();
    cfg.setEndpoint(endPoints.get(0));
    OpcUaClient client = null;
    try {
        client = OpcUaClient.create(cfg.build());
    } catch (UaException e) {
        e.printStackTrace();
    }
    try {
        client.connect().get();
    } catch (InterruptedException e) {
        e.printStackTrace();
    } catch (ExecutionException e) {
        e.printStackTrace();
    }
}

}

EXCEPTION SLF4J: No SLF4J providers were found. SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#noProviders for further details. java.util.concurrent.ExecutionException: UaException: status=Bad_ConnectionRejected, message=io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: ubung/127.0.1.1:53530 at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:395) at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1999) at ClientTest.createClient(ClientTest.java:18) at Main.main(Main.java:14) Caused by: UaException: status=Bad_ConnectionRejected, message=io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: ubung/127.0.1.1:53530 at org.eclipse.milo.opcua.stack.client.transport.uasc.ClientChannelFsm$ClientChannelActions.lambda$connect$0(ClientChannelFsm.java:130) at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:502) at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:495) at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:474) at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:415) at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:540) at io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:533) at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:114) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:327) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:343) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:665) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:612) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:529) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:491) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: ubung/127.0.1.1:53530 at java.base/sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:779) at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:327) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340) ... 6 more Caused by: java.net.ConnectException: Connection refused ... 10 more Exception in thread "main" java.lang.NullPointerException at ClientTest.createClient(ClientTest.java:29) at Main.main(Main.java:14)

Process finished with exit code 1

kevinherron commented 4 years ago

This is just a plain Java networking error:

java.net.ConnectException: Connection refused

Are you sure the server is running, bound to 127.0.1.1, and on the port you specified? Is 127.0.1.1 a typo? Did you mean localhost or 127.0.0.1?

bellirodrigo2 commented 4 years ago

I was copying and pasting the URL from the OPC server, but for some reason it was connecting to the wrong address. I overcame it by typing my IP directly, but I have a new exception when connecting the client. See below the code and the exception

CODE public void createClient(String endPointURL) {

    List<EndpointDescription> endPoints = null;
    try {
        endPoints = DiscoveryClient.getEndpoints(endPointURL).get();
        System.out.println("----------End Point --------------");
        System.out.println("End Point: " + endPoints.toString());
        System.out.println("URL: " + endPoints.get(0).getEndpointUrl());
    } catch (InterruptedException e) {
        e.printStackTrace();
    } catch (ExecutionException e) {
        e.printStackTrace();
    }

    //Creating the client
    OpcUaClientConfigBuilder cfg = new OpcUaClientConfigBuilder();
    cfg.setEndpoint(endPoints.get(0));
    System.out.println("-------------Cfg-----------");
    System.out.println("Client Config Builder: " + cfg.toString());
    OpcUaClient client = null;
    try {
        client = OpcUaClient.create(cfg.build());
        System.out.println("--------Client create-------------");
        System.out.println("Client Created: " + client.getAddressSpace().toString());
    } catch (UaException e) {
        e.printStackTrace();
        e.getMessage();
    }
    System.out.println("----------_Client-----------");
    System.out.println("Get Address Space: " + client.getAddressSpace());
    System.out.println("Get Config: " + client.getConfig());
    System.out.println("Get Session: " + client.getSession());
    System.out.println("Get Stack Client: " + client.getStackClient());
    try {
        System.out.println("---------------Trying Connection--------------------");
        client.connect().get();
    } catch (InterruptedException e) {
        e.printStackTrace();
    } catch (ExecutionException e) {
        System.out.println("Execution Exception");
        e.getMessage();
        e.getCause();
    }

}

AND THE OUTPUT ----------End Point -------------- End Point: [EndpointDescription{EndpointUrl=opc.tcp://ubung:53530/OPCUA/SimulationServer, Server=ApplicationDescription{ApplicationUri=urn:ubung:OPCUA:SimulationServer, ProductUri=urn:prosysopc.com:OPCUA:SimulationServer, ApplicationName=LocalizedText{text=SimulationServer@ubung, locale=}, ApplicationType=Server, GatewayServerUri=null, DiscoveryProfileUri=null, DiscoveryUrls=[opc.tcp://ubung:53530/OPCUA/SimulationServer]}, ServerCertificate=ByteString{bytes=[48, -126, 3, -55, 48, -126, 2, -79, -96, 3, 2, 1, 2, 2, 6, 1, 112, 14, 56, -122, -111, 48, 13, 6, 9, 42, -122, 72, -122, -9, 13, 1, 1, 11, 5, 0, 48, 77, 49, 31, 48, 29, 6, 3, 85, 4, 3, 12, 22, 83, 105, 109, 117, 108, 97, 116, 105, 111, 110, 83, 101, 114, 118, 101, 114, 64, 117, 98, 117, 110, 103, 49, 19, 48, 17, 6, 3, 85, 4, 10, 12, 10, 80, 114, 111, 115, 121, 115, 32, 79, 80, 67, 49, 21, 48, 19, 6, 10, 9, -110, 38, -119, -109, -14, 44, 100, 1, 25, 22, 5, 117, 98, 117, 110, 103, 48, 30, 23, 13, 50, 48, 48, 50, 48, 52, 48, 50, 50, 50, 51, 48, 90, 23, 13, 51, 48, 48, 50, 48, 49, 48, 51, 50, 50, 51, 48, 90, 48, 77, 49, 31, 48, 29, 6, 3, 85, 4, 3, 12, 22, 83, 105, 109, 117, 108, 97, 116, 105, 111, 110, 83, 101, 114, 118, 101, 114, 64, 117, 98, 117, 110, 103, 49, 19, 48, 17, 6, 3, 85, 4, 10, 12, 10, 80, 114, 111, 115, 121, 115, 32, 79, 80, 67, 49, 21, 48, 19, 6, 10, 9, -110, 38, -119, -109, -14, 44, 100, 1, 25, 22, 5, 117, 98, 117, 110, 103, 48, -126, 1, 34, 48, 13, 6, 9, 42, -122, 72, -122, -9, 13, 1, 1, 1, 5, 0, 3, -126, 1, 15, 0, 48, -126, 1, 10, 2, -126, 1, 1, 0, -42, 68, -90, -78, -100, 30, -103, 4, -76, 4, 69, -70, 2, 30, -118, 18, 96, 110, 93, 61, 79, -120, 61, 28, -39, -74, -110, 63, 118, 51, 74, 11, 109, -70, 116, -107, -21, 6, -29, -88, -29, -72, -11, 20, -11, -36, -32, 82, -10, 73, 113, -105, 112, -18, -100, 90, 79, -91, -25, 100, -9, -2, 125, 68, -122, 29, -79, -48, -114, 29, -107, 56, 123, 36, 41, 15, 102, -51, 37, -105, -127, -41, 55, -92, 25, 105, 118, 72, -125, 44, 107, 18, 109, -33, 70, 55, -67, -115, 16, 75, -39, -30, -69, 39, 22, 9, -110, -43, 69, 27, -2, 67, 111, 61, -98, -57, 115, 4, -123, -48, 43, 44, 32, -17, -46, -26, -103, -6, 72, 63, -72, 19, 35, 65, 20, -79, -7, -35, 86, 80, -38, -4, 21, -39, -109, 74, 51, 99, -96, 13, -106, 22, 66, -3, -35, -57, -111, 88, 70, -88, -104, -91, 7, 55, -16, 53, 46, 17, 97, -14, 84, -84, 30, -90, 59, -121, 33, -17, 105, -42, 34, 70, 87, -35, -11, 87, 77, 10, 122, 23, -101, 81, 115, 60, 69, 36, -26, 17, -117, -10, 91, -107, 25, -125, -66, -50, -108, -74, 15, 94, 33, -113, 34, 112, -93, 98, -56, -55, -75, -27, -127, -9, 124, 15, 64, 57, 7, -74, 94, 108, -40, -114, -37, -94, 2, 36, 104, -103, 3, 97, -55, 27, 42, 92, 124, 11, 57, -124, -24, -125, 24, -5, -64, 71, 67, 37, 2, 3, 1, 0, 1, -93, -127, -82, 48, -127, -85, 48, 31, 6, 3, 85, 29, 35, 4, 24, 48, 22, -128, 20, -110, 58, -120, -94, -9, 88, -105, 77, 92, 108, 103, -119, -4, 93, 9, 53, -11, 21, -94, -82, 48, 29, 6, 3, 85, 29, 14, 4, 22, 4, 20, -110, 58, -120, -94, -9, 88, -105, 77, 92, 108, 103, -119, -4, 93, 9, 53, -11, 21, -94, -82, 48, 9, 6, 3, 85, 29, 19, 4, 2, 48, 0, 48, 11, 6, 3, 85, 29, 15, 4, 4, 3, 2, 2, -12, 48, 29, 6, 3, 85, 29, 37, 4, 22, 48, 20, 6, 8, 43, 6, 1, 5, 5, 7, 3, 1, 6, 8, 43, 6, 1, 5, 5, 7, 3, 2, 48, 50, 6, 3, 85, 29, 17, 4, 43, 48, 41, -122, 32, 117, 114, 110, 58, 117, 98, 117, 110, 103, 58, 79, 80, 67, 85, 65, 58, 83, 105, 109, 117, 108, 97, 116, 105, 111, 110, 83, 101, 114, 118, 101, 114, -126, 5, 117, 98, 117, 110, 103, 48, 13, 6, 9, 42, -122, 72, -122, -9, 13, 1, 1, 11, 5, 0, 3, -126, 1, 1, 0, 8, -126, 4, 59, 117, 1, -37, -42, 12, 75, 67, -73, 60, 35, 28, -87, -38, 38, -95, -112, 103, 8, 9, 20, 72, -18, -32, -105, -80, -128, -101, 88, 78, -112, 48, 27, -10, -121, 70, -46, 21, 33, 46, 27, 99, -100, 35, 22, 35, -47, 112, -107, 124, 6, -120, 23, -40, 52, 111, 23, 17, 50, -33, -54, 38, 60, 1, -111, 127, 84, -36, -13, 12, 21, -107, -114, -28, 109, -67, -82, 40, -79, 8, 114, 119, -31, -21, 80, -120, -13, 36, -44, -91, 101, -87, -35, 98, -61, -127, -101, -83, 66, -76, 11, 26, -81, -39, -26, 44, -62, 88, -2, 71, -83, 59, 90, 82, 77, -58, 45, -97, 105, 1, -9, 104, 11, -69, 60, 127, -5, -51, -125, -56, 14, 120, 59, 54, 54, -35, -86, 19, -126, -9, 51, -51, 19, -7, -21, 32, 89, 60, 104, 82, 55, -49, -78, -108, -116, -125, 72, -24, 7, 58, -67, -71, -63, 123, 123, 12, -38, -118, 16, -109, 43, -4, -23, 78, -89, -27, 63, 39, 121, 11, -74, -26, 94, -55, 123, 75, 107, -106, 99, 27, -119, 7, 9, -22, -42, -108, 63, 103, -32, 12, -3, 120, -63, -127, -23, -3, -16, 111, 93, 51, 74, 36, 19, 47, -4, -26, -59, 30, -122, -77, 7, 21, 121, -32, -35, 16, -3, 86, -3, 50, -3, 51, -110, 86, -124, -40, -111, -41, 93, 115, 19, 112, -113, 61, 15, -20, -34, -28, 68, -95, -128, -87, -109]}, SecurityMode=None, SecurityPolicyUri=http://opcfoundation.org/UA/SecurityPolicy#None, UserIdentityTokens=[UserTokenPolicy{PolicyId=anonymous, TokenType=Anonymous, IssuedTokenType=null, IssuerEndpointUrl=null, SecurityPolicyUri=null}, UserTokenPolicy{PolicyId=certificate_basic128, TokenType=Certificate, IssuedTokenType=null, IssuerEndpointUrl=null, SecurityPolicyUri=http://opcfoundation.org/UA/SecurityPolicy#Basic128Rsa15}, UserTokenPolicy{PolicyId=certificate_basic256, TokenType=Certificate, IssuedTokenType=null, IssuerEndpointUrl=null, SecurityPolicyUri=http://opcfoundation.org/UA/SecurityPolicy#Basic256}, UserTokenPolicy{PolicyId=username_basic128, TokenType=UserName, IssuedTokenType=null, IssuerEndpointUrl=null, SecurityPolicyUri=http://opcfoundation.org/UA/SecurityPolicy#Basic128Rsa15}, UserTokenPolicy{PolicyId=username_basic256, TokenType=UserName, IssuedTokenType=null, IssuerEndpointUrl=null, SecurityPolicyUri=http://opcfoundation.org/UA/SecurityPolicy#Basic256}], TransportProfileUri=http://opcfoundation.org/UA-Profile/Transport/uatcp-uasc-uabinary, SecurityLevel=0}] URL: opc.tcp://ubung:53530/OPCUA/SimulationServer -------------Cfg----------- Client Config Builder: org.eclipse.milo.opcua.sdk.client.api.config.OpcUaClientConfigBuilder@69f1a286 --------Client create------------- Client Created: org.eclipse.milo.opcua.sdk.client.DefaultAddressSpace@71984c3 ----------_Client----------- Get Address Space: org.eclipse.milo.opcua.sdk.client.DefaultAddressSpace@71984c3 Get Config: org.eclipse.milo.opcua.sdk.client.api.config.OpcUaClientConfigBuilder$OpcUaClientConfigImpl@5536379e Get Session: java.util.concurrent.CompletableFuture@2364305a[Not completed] Get Stack Client: org.eclipse.milo.opcua.stack.client.UaStackClient@470a696f ---------------Trying Connection-------------------- Execution Exception

bellirodrigo2 commented 4 years ago

The e.printStackTrace() is: See that again, it is trying to connect to 127.0.1.1. I dont know where java is getting this value and how to change

java.util.concurrent.ExecutionException: UaException: status=Bad_ConnectionRejected, message=io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: ubung/127.0.1.1:53530 at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:395) at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1999) at ClientTest.createClient(ClientTest.java:47) at Main.main(Main.java:13)

kevinherron commented 4 years ago

Looks like you didn't include any exceptions.

bellirodrigo2 commented 4 years ago

See below the same OUTPUT with the e.PrintStackTrace():

----------End Point -------------- End Point: [EndpointDescription{EndpointUrl=opc.tcp://ubung:53530/OPCUA/SimulationServer, Server=ApplicationDescription{ApplicationUri=urn:ubung:OPCUA:SimulationServer, ProductUri=urn:prosysopc.com:OPCUA:SimulationServer, ApplicationName=LocalizedText{text=SimulationServer@ubung, locale=}, ApplicationType=Server, GatewayServerUri=null, DiscoveryProfileUri=null, DiscoveryUrls=[opc.tcp://ubung:53530/OPCUA/SimulationServer]}, ServerCertificate=ByteString{bytes=[48, -126, 3, -55, 48, -126, 2, -79, -96, 3, 2, 1, 2, 2, 6, 1, 112, 14, 56, -122, -111, 48, 13, 6, 9, 42, -122, 72, -122, -9, 13, 1, 1, 11, 5, 0, 48, 77, 49, 31, 48, 29, 6, 3, 85, 4, 3, 12, 22, 83, 105, 109, 117, 108, 97, 116, 105, 111, 110, 83, 101, 114, 118, 101, 114, 64, 117, 98, 117, 110, 103, 49, 19, 48, 17, 6, 3, 85, 4, 10, 12, 10, 80, 114, 111, 115, 121, 115, 32, 79, 80, 67, 49, 21, 48, 19, 6, 10, 9, -110, 38, -119, -109, -14, 44, 100, 1, 25, 22, 5, 117, 98, 117, 110, 103, 48, 30, 23, 13, 50, 48, 48, 50, 48, 52, 48, 50, 50, 50, 51, 48, 90, 23, 13, 51, 48, 48, 50, 48, 49, 48, 51, 50, 50, 51, 48, 90, 48, 77, 49, 31, 48, 29, 6, 3, 85, 4, 3, 12, 22, 83, 105, 109, 117, 108, 97, 116, 105, 111, 110, 83, 101, 114, 118, 101, 114, 64, 117, 98, 117, 110, 103, 49, 19, 48, 17, 6, 3, 85, 4, 10, 12, 10, 80, 114, 111, 115, 121, 115, 32, 79, 80, 67, 49, 21, 48, 19, 6, 10, 9, -110, 38, -119, -109, -14, 44, 100, 1, 25, 22, 5, 117, 98, 117, 110, 103, 48, -126, 1, 34, 48, 13, 6, 9, 42, -122, 72, -122, -9, 13, 1, 1, 1, 5, 0, 3, -126, 1, 15, 0, 48, -126, 1, 10, 2, -126, 1, 1, 0, -42, 68, -90, -78, -100, 30, -103, 4, -76, 4, 69, -70, 2, 30, -118, 18, 96, 110, 93, 61, 79, -120, 61, 28, -39, -74, -110, 63, 118, 51, 74, 11, 109, -70, 116, -107, -21, 6, -29, -88, -29, -72, -11, 20, -11, -36, -32, 82, -10, 73, 113, -105, 112, -18, -100, 90, 79, -91, -25, 100, -9, -2, 125, 68, -122, 29, -79, -48, -114, 29, -107, 56, 123, 36, 41, 15, 102, -51, 37, -105, -127, -41, 55, -92, 25, 105, 118, 72, -125, 44, 107, 18, 109, -33, 70, 55, -67, -115, 16, 75, -39, -30, -69, 39, 22, 9, -110, -43, 69, 27, -2, 67, 111, 61, -98, -57, 115, 4, -123, -48, 43, 44, 32, -17, -46, -26, -103, -6, 72, 63, -72, 19, 35, 65, 20, -79, -7, -35, 86, 80, -38, -4, 21, -39, -109, 74, 51, 99, -96, 13, -106, 22, 66, -3, -35, -57, -111, 88, 70, -88, -104, -91, 7, 55, -16, 53, 46, 17, 97, -14, 84, -84, 30, -90, 59, -121, 33, -17, 105, -42, 34, 70, 87, -35, -11, 87, 77, 10, 122, 23, -101, 81, 115, 60, 69, 36, -26, 17, -117, -10, 91, -107, 25, -125, -66, -50, -108, -74, 15, 94, 33, -113, 34, 112, -93, 98, -56, -55, -75, -27, -127, -9, 124, 15, 64, 57, 7, -74, 94, 108, -40, -114, -37, -94, 2, 36, 104, -103, 3, 97, -55, 27, 42, 92, 124, 11, 57, -124, -24, -125, 24, -5, -64, 71, 67, 37, 2, 3, 1, 0, 1, -93, -127, -82, 48, -127, -85, 48, 31, 6, 3, 85, 29, 35, 4, 24, 48, 22, -128, 20, -110, 58, -120, -94, -9, 88, -105, 77, 92, 108, 103, -119, -4, 93, 9, 53, -11, 21, -94, -82, 48, 29, 6, 3, 85, 29, 14, 4, 22, 4, 20, -110, 58, -120, -94, -9, 88, -105, 77, 92, 108, 103, -119, -4, 93, 9, 53, -11, 21, -94, -82, 48, 9, 6, 3, 85, 29, 19, 4, 2, 48, 0, 48, 11, 6, 3, 85, 29, 15, 4, 4, 3, 2, 2, -12, 48, 29, 6, 3, 85, 29, 37, 4, 22, 48, 20, 6, 8, 43, 6, 1, 5, 5, 7, 3, 1, 6, 8, 43, 6, 1, 5, 5, 7, 3, 2, 48, 50, 6, 3, 85, 29, 17, 4, 43, 48, 41, -122, 32, 117, 114, 110, 58, 117, 98, 117, 110, 103, 58, 79, 80, 67, 85, 65, 58, 83, 105, 109, 117, 108, 97, 116, 105, 111, 110, 83, 101, 114, 118, 101, 114, -126, 5, 117, 98, 117, 110, 103, 48, 13, 6, 9, 42, -122, 72, -122, -9, 13, 1, 1, 11, 5, 0, 3, -126, 1, 1, 0, 8, -126, 4, 59, 117, 1, -37, -42, 12, 75, 67, -73, 60, 35, 28, -87, -38, 38, -95, -112, 103, 8, 9, 20, 72, -18, -32, -105, -80, -128, -101, 88, 78, -112, 48, 27, -10, -121, 70, -46, 21, 33, 46, 27, 99, -100, 35, 22, 35, -47, 112, -107, 124, 6, -120, 23, -40, 52, 111, 23, 17, 50, -33, -54, 38, 60, 1, -111, 127, 84, -36, -13, 12, 21, -107, -114, -28, 109, -67, -82, 40, -79, 8, 114, 119, -31, -21, 80, -120, -13, 36, -44, -91, 101, -87, -35, 98, -61, -127, -101, -83, 66, -76, 11, 26, -81, -39, -26, 44, -62, 88, -2, 71, -83, 59, 90, 82, 77, -58, 45, -97, 105, 1, -9, 104, 11, -69, 60, 127, -5, -51, -125, -56, 14, 120, 59, 54, 54, -35, -86, 19, -126, -9, 51, -51, 19, -7, -21, 32, 89, 60, 104, 82, 55, -49, -78, -108, -116, -125, 72, -24, 7, 58, -67, -71, -63, 123, 123, 12, -38, -118, 16, -109, 43, -4, -23, 78, -89, -27, 63, 39, 121, 11, -74, -26, 94, -55, 123, 75, 107, -106, 99, 27, -119, 7, 9, -22, -42, -108, 63, 103, -32, 12, -3, 120, -63, -127, -23, -3, -16, 111, 93, 51, 74, 36, 19, 47, -4, -26, -59, 30, -122, -77, 7, 21, 121, -32, -35, 16, -3, 86, -3, 50, -3, 51, -110, 86, -124, -40, -111, -41, 93, 115, 19, 112, -113, 61, 15, -20, -34, -28, 68, -95, -128, -87, -109]}, SecurityMode=None, SecurityPolicyUri=http://opcfoundation.org/UA/SecurityPolicy#None, UserIdentityTokens=[UserTokenPolicy{PolicyId=anonymous, TokenType=Anonymous, IssuedTokenType=null, IssuerEndpointUrl=null, SecurityPolicyUri=null}, UserTokenPolicy{PolicyId=certificate_basic128, TokenType=Certificate, IssuedTokenType=null, IssuerEndpointUrl=null, SecurityPolicyUri=http://opcfoundation.org/UA/SecurityPolicy#Basic128Rsa15}, UserTokenPolicy{PolicyId=certificate_basic256, TokenType=Certificate, IssuedTokenType=null, IssuerEndpointUrl=null, SecurityPolicyUri=http://opcfoundation.org/UA/SecurityPolicy#Basic256}, UserTokenPolicy{PolicyId=username_basic128, TokenType=UserName, IssuedTokenType=null, IssuerEndpointUrl=null, SecurityPolicyUri=http://opcfoundation.org/UA/SecurityPolicy#Basic128Rsa15}, UserTokenPolicy{PolicyId=username_basic256, TokenType=UserName, IssuedTokenType=null, IssuerEndpointUrl=null, SecurityPolicyUri=http://opcfoundation.org/UA/SecurityPolicy#Basic256}], TransportProfileUri=http://opcfoundation.org/UA-Profile/Transport/uatcp-uasc-uabinary, SecurityLevel=0}] URL: opc.tcp://ubung:53530/OPCUA/SimulationServer -------------Cfg----------- Client Config Builder: org.eclipse.milo.opcua.sdk.client.api.config.OpcUaClientConfigBuilder@69f1a286 --------Client create------------- Client Created: org.eclipse.milo.opcua.sdk.client.DefaultAddressSpace@71984c3 ----------_Client----------- Get Address Space: org.eclipse.milo.opcua.sdk.client.DefaultAddressSpace@71984c3 Get Config: org.eclipse.milo.opcua.sdk.client.api.config.OpcUaClientConfigBuilder$OpcUaClientConfigImpl@5536379e Get Session: java.util.concurrent.CompletableFuture@2364305a[Not completed] Get Stack Client: org.eclipse.milo.opcua.stack.client.UaStackClient@470a696f ---------------Trying Connection-------------------- Execution Exception java.util.concurrent.ExecutionException: UaException: status=Bad_ConnectionRejected, message=io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: ubung/127.0.1.1:53530 at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:395) at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1999) at ClientTest.createClient(ClientTest.java:47) at Main.main(Main.java:13) Caused by: UaException: status=Bad_ConnectionRejected, message=io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: ubung/127.0.1.1:53530 at org.eclipse.milo.opcua.stack.client.transport.uasc.ClientChannelFsm$ClientChannelActions.lambda$connect$0(ClientChannelFsm.java:130) at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:502) at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:495) at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:474) at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:415) at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:540) at io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:533) at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:114) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:327) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:343) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:665) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:612) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:529) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:491) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: ubung/127.0.1.1:53530 at java.base/sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:779) at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:327) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340) ... 6 more Caused by: java.net.ConnectException: Connection refused ... 10 more

Process finished with exit code 0

kevinherron commented 4 years ago

Well... again:

java.net.ConnectException: Connection refused

bellirodrigo2 commented 4 years ago

When creating the method below, public void createClient(String endPointURL) {...}

I type my IP address (192.168.X.X:53530), and it work well when creating the end point, endPoints = DiscoveryClient.getEndpoints(endPointURL).get();

But, when connecting the client (using the endpoint above), it go back to the 127.0.1.1:5353

kevinherron commented 4 years ago

Ok, I understand now.

The server is misconfigured and returning the wrong IP address in its EndpointDescriptions.

If you can’t fix the server configuration you can create new endpoints with the hostname in the endpoint URL updated. There is a Stack Overflow connection about this with some sample code. You would then pass the modified EndpointDescription to the client when you configure it.

On Mar 9, 2020, at 18:09, rodrigobelli2 notifications@github.com wrote:

 When creating the method below, public void createClient(String endPointURL) {...}

I type my IP address (192.168.X.X:53530), and it work well when creating the end point, endPoints = DiscoveryClient.getEndpoints(endPointURL).get();

But, when connecting the client (using the endpoint above), it go back to the 127.0.1.1:5353

— You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.

bellirodrigo2 commented 4 years ago

Can't find this stackoverflow... DO you have the link ?

kevinherron commented 4 years ago

https://stackoverflow.com/questions/40554198/java-opc-ua-client-eclipse-milo-endpoint-url-changes-to-localhost?r=SearchResults

On Mar 9, 2020, at 19:10, rodrigobelli2 notifications@github.com wrote:

 Can't find this stackoverflow... DO you have the link ?

— You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.

bellirodrigo2 commented 4 years ago

PERFECT!!!! Thank you very much...

istibekesi commented 3 years ago

I'm running OPC PROSYS OPC server simulator on linux and it seems 127.0.1.1 is coming from the hosts file. https://serverfault.com/questions/363095/why-does-my-hostname-appear-with-the-address-127-0-1-1-rather-than-127-0-0-1-in

I removed that line from the /etc/hosts, restarted the simulation server and it worked.

Is this a bug in the linux version of OPC UA Simulation Server?

kevinherron commented 3 years ago

@istibekesi I don't know, the Prosys simulation server is closed source and not related to Milo. I don't know how it works or what logic it uses to determine bind addresses.

I don't think there is anything fundamentally wrong with how Ubuntu (I assume) uses 127.0.0.1 for localhost and 127.0.1.1 for the hostname, it just might require some extra configuration on the server to make sure the right bind addresses are used and the right IPs and hostnames are returned in the endpoint URLs.