使用 OPCFoundation/UA-Java 项目的工作 OPC UA 模拟器示例
Working OPC UA Simulator example using OPCFoundation/UA-Java project
任何人都有 OPC UA 的模拟器示例，我正在使用 OPC UA 项目 https://github.com/OPCFoundation/UA-Java。
我已经尝试了此 git 中心页面上提到的所有服务器，但其中 none 对我有用 https://github.com/node-opcua/node-opcua/wiki/publicly-available-OPCUA-servers。
我正在使用 org.opcfoundation.ua.examples.SampleClient 实用程序来检查连接和样本值，但无法这样做。如果有人有工作示例 w.r.t，请与代码一起分享。一旦这个工作我需要在 apache Nifi 中配置这个设置来制作数据管道。
代码：
public class SampleClient {
public static final Locale ENGLISH = Locale.ENGLISH;
public static final Locale ENGLISH_FINLAND = new Locale("en", "FI");
public static final Locale ENGLISH_US = new Locale("en", "US");
public static final Locale FINNISH = new Locale("fi");
public static final Locale FINNISH_FINLAND = new Locale("fi", "FI");
public static final Locale GERMAN = Locale.GERMAN;
public static final Locale GERMAN_GERMANY = new Locale("de", "DE");
public static void main(String[] args)
throws Exception {
// if (args.length==0) {
// System.out.println("Usage: SampleClient [server uri]");
// return;
// }
//String url = /*args[0]*/"opc.tcp://uademo.prosysopc.com:53530/OPCUA/SimulationServer";
//String url = /*args[0]*/"opc.tcp://uademo.prosysopc.com:53530";
//String url = /*args[0]*/"opc.tcp://opcua.demo-this.com:51210/UA/SampleServer";
String url="opc.tcp://mfactorengineering.com:4840";
//String url="opc.tcp://commsvr.com:51234/UA/CAS_UA_Server";
//String url="opc.tcp://uademo.prosysopc.com:53530/OPCUA/SimulationServer";
//String url="opc.tcp://opcua.demo-this.com:51210/UA/SampleServer";
//String url="opc.tcp://opcua.demo-this.com:51211/UA/SampleServer";
//String url="opc.tcp://opcua.demo-this.com:51212/UA/SampleServer";
//String url="opc.tcp://demo.ascolab.com:4841";
//String url="opc.tcp://alamscada.dynu.com:4096";
System.out.print("SampleClient: Connecting to "+url+" .. ");
////////////// CLIENT //////////////
// Create Client
Application myApplication = new Application();
Client myClient = new Client(myApplication);
myApplication.addLocale( ENGLISH );
myApplication.setApplicationName( new LocalizedText("Java Sample Client", Locale.ENGLISH) );
myApplication.setProductUri( "urn:JavaSampleClient" );
CertificateUtils.setKeySize(1024); // default = 1024
KeyPair pair = ExampleKeys.getCert("SampleClient");
myApplication.addApplicationInstanceCertificate( pair );
// The HTTPS SecurityPolicies are defined separate from the endpoint securities
myApplication.getHttpsSettings().setHttpsSecurityPolicies(HttpsSecurityPolicy.ALL);
// Peer verifier
myApplication.getHttpsSettings().setHostnameVerifier( SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER );
myApplication.getHttpsSettings().setCertificateValidator( CertificateValidator.ALLOW_ALL );
// The certificate to use for HTTPS
KeyPair myHttpsCertificate = ExampleKeys.getHttpsCert("SampleClient");
myApplication.getHttpsSettings().setKeyPair( myHttpsCertificate );
// Connect to the given uri
SessionChannel mySession = myClient.createSessionChannel(url);
// mySession.activate("username", "123");
mySession.activate();
//////////////////////////////////////
///////////// EXECUTE //////////////
// Browse Root
BrowseDescription browse = new BrowseDescription();
browse.setNodeId( Identifiers.RootFolder );
browse.setBrowseDirection( BrowseDirection.Forward );
browse.setIncludeSubtypes( true );
browse.setNodeClassMask( NodeClass.Object, NodeClass.Variable );
browse.setResultMask( BrowseResultMask.All );
BrowseResponse res3 = mySession.Browse( null, null, null, browse );
System.out.println(res3);
// Read Namespace Array
ReadResponse res5 = mySession.Read(
null,
null,
TimestampsToReturn.Neither,
new ReadValueId(Identifiers.Server_NamespaceArray, Attributes.Value, null, null )
);
String[] namespaceArray = (String[]) res5.getResults()[0].getValue().getValue();
System.out.println(Arrays.toString(namespaceArray));
// Read a variable
ReadResponse res4 = mySession.Read(
null,
500.0,
TimestampsToReturn.Source,
new ReadValueId(new NodeId(6, 1710), Attributes.Value, null, null )
);
System.out.println(res4);
res4 = mySession.Read(
null,
500.0,
TimestampsToReturn.Source,
new ReadValueId(new NodeId(6, 1710), Attributes.DataType, null, null )
);
System.out.println(res4);
///////////// SHUTDOWN /////////////
mySession.close();
mySession.closeAsync();
//////////////////////////////////////
}
}
异常：
SampleClient: Connecting to opc.tcp://mfactorengineering.com:4840 .. 2017-07-20 11:24:34,909 [main] INFO CryptoUtil - SecurityProvider initialized from org.bouncycastle.jce.provider.BouncyCastleProvider
2017-07-20 11:24:34,909 [main] INFO CryptoUtil - Using SecurityProvider BC
2017-07-20 11:24:35,549 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connecting
2017-07-20 11:24:36,142 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connected
2017-07-20 11:24:36,753 [main] INFO SecureChannelTcp - 1804305022 Closed
2017-07-20 11:24:36,768 [TcpConnection/Read] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Closed (expected)
2017-07-20 11:24:36,768 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Closed
2017-07-20 11:24:36,768 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connecting
2017-07-20 11:24:37,408 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connect failed
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:209)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at java.net.SocketInputStream.read(SocketInputStream.java:223)
at org.opcfoundation.ua.utils.bytebuffer.InputStreamReadable._get(InputStreamReadable.java:53)
at org.opcfoundation.ua.utils.bytebuffer.InputStreamReadable.getInt(InputStreamReadable.java:144)
at org.opcfoundation.ua.transport.tcp.io.TcpConnection.open(TcpConnection.java:500)
at org.opcfoundation.ua.transport.tcp.io.SecureChannelTcp.open(SecureChannelTcp.java:565)
at org.opcfoundation.ua.application.Client.createSecureChannel(Client.java:641)
at org.opcfoundation.ua.application.Client.createSecureChannel(Client.java:555)
at org.opcfoundation.ua.application.Client.createSessionChannel(Client.java:370)
at org.opcfoundation.ua.application.Client.createSessionChannel(Client.java:345)
at org.opcfoundation.ua.examples.SampleClient.main(SampleClient.java:120)
2017-07-20 11:24:37,464 [main] WARN SecureChannelTcp - Connection failed: Bad_CommunicationError (code=0x80050000, description="2147811328, Connection reset")
2017-07-20 11:24:37,464 [main] WARN SecureChannelTcp - Bad_CommunicationError: Retrying
2017-07-20 11:24:37,464 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connecting
2017-07-20 11:24:38,056 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connected
2017-07-20 11:24:38,368 [TcpConnection/Read] WARN TcpConnection - mfactorengineering.com/184.173.118.46:4840 Error
org.opcfoundation.ua.common.ServiceResultException: Bad_SecurityChecksFailed (code=0x80130000, description="An error occurred verifying security")
at org.opcfoundation.ua.transport.tcp.io.TcpConnection$ReadThread.run(TcpConnection.java:782)
2017-07-20 11:24:38,368 [TcpConnection/Read] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Closed
Exception in thread "main" org.opcfoundation.ua.common.ServiceResultException: Bad_SecurityChecksFailed (code=0x80130000, description="An error occurred verifying security")
at org.opcfoundation.ua.transport.tcp.io.TcpConnection$ReadThread.run(TcpConnection.java:782)
该示例的编写使其始终选择最安全的连接，另一方面，这要求服务器在启用连接之前接受客户端应用程序的应用程序实例证书。 Bad_SecurityChecksFailed 是服务器不接受客户端连接时的标准错误代码。
由于您无法控制这些公开可用的服务器以使其信任您的客户端应用程序，因此您唯一的选择是尝试在没有安全保护的情况下进行连接（如果服务器允许的话）。
为此，您需要更改代码，使其选择不安全的端点。
替换
SessionChannel mySession = myClient.createSessionChannel(url);
和
EndpointDescription[] endpoints = myClient.discoverEndpoints(url);
// Filter out all but opc.tcp protocol endpoints
endpoints = selectByProtocol(endpoints, "opc.tcp");
// Filter out all but Signed & Encrypted endpoints
endpoints = selectByMessageSecurityMode(endpoints, MessageSecurityMode.None);
// Choose one endpoint
if (endpoints.length == 0)
throw new Exception("The server does not support insecure connections");
EndpointDescription endpoint = endpoints[0];
//////////////////////////////////////
SessionChannel mySession = myClient.createSessionChannel(endpoint);
（根据ClientExample1的行数）
任何人都有 OPC UA 的模拟器示例，我正在使用 OPC UA 项目 https://github.com/OPCFoundation/UA-Java。
我已经尝试了此 git 中心页面上提到的所有服务器，但其中 none 对我有用 https://github.com/node-opcua/node-opcua/wiki/publicly-available-OPCUA-servers。
我正在使用 org.opcfoundation.ua.examples.SampleClient 实用程序来检查连接和样本值，但无法这样做。如果有人有工作示例 w.r.t，请与代码一起分享。一旦这个工作我需要在 apache Nifi 中配置这个设置来制作数据管道。
代码：
public class SampleClient {
public static final Locale ENGLISH = Locale.ENGLISH;
public static final Locale ENGLISH_FINLAND = new Locale("en", "FI");
public static final Locale ENGLISH_US = new Locale("en", "US");
public static final Locale FINNISH = new Locale("fi");
public static final Locale FINNISH_FINLAND = new Locale("fi", "FI");
public static final Locale GERMAN = Locale.GERMAN;
public static final Locale GERMAN_GERMANY = new Locale("de", "DE");
public static void main(String[] args)
throws Exception {
// if (args.length==0) {
// System.out.println("Usage: SampleClient [server uri]");
// return;
// }
//String url = /*args[0]*/"opc.tcp://uademo.prosysopc.com:53530/OPCUA/SimulationServer";
//String url = /*args[0]*/"opc.tcp://uademo.prosysopc.com:53530";
//String url = /*args[0]*/"opc.tcp://opcua.demo-this.com:51210/UA/SampleServer";
String url="opc.tcp://mfactorengineering.com:4840";
//String url="opc.tcp://commsvr.com:51234/UA/CAS_UA_Server";
//String url="opc.tcp://uademo.prosysopc.com:53530/OPCUA/SimulationServer";
//String url="opc.tcp://opcua.demo-this.com:51210/UA/SampleServer";
//String url="opc.tcp://opcua.demo-this.com:51211/UA/SampleServer";
//String url="opc.tcp://opcua.demo-this.com:51212/UA/SampleServer";
//String url="opc.tcp://demo.ascolab.com:4841";
//String url="opc.tcp://alamscada.dynu.com:4096";
System.out.print("SampleClient: Connecting to "+url+" .. ");
////////////// CLIENT //////////////
// Create Client
Application myApplication = new Application();
Client myClient = new Client(myApplication);
myApplication.addLocale( ENGLISH );
myApplication.setApplicationName( new LocalizedText("Java Sample Client", Locale.ENGLISH) );
myApplication.setProductUri( "urn:JavaSampleClient" );
CertificateUtils.setKeySize(1024); // default = 1024
KeyPair pair = ExampleKeys.getCert("SampleClient");
myApplication.addApplicationInstanceCertificate( pair );
// The HTTPS SecurityPolicies are defined separate from the endpoint securities
myApplication.getHttpsSettings().setHttpsSecurityPolicies(HttpsSecurityPolicy.ALL);
// Peer verifier
myApplication.getHttpsSettings().setHostnameVerifier( SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER );
myApplication.getHttpsSettings().setCertificateValidator( CertificateValidator.ALLOW_ALL );
// The certificate to use for HTTPS
KeyPair myHttpsCertificate = ExampleKeys.getHttpsCert("SampleClient");
myApplication.getHttpsSettings().setKeyPair( myHttpsCertificate );
// Connect to the given uri
SessionChannel mySession = myClient.createSessionChannel(url);
// mySession.activate("username", "123");
mySession.activate();
//////////////////////////////////////
///////////// EXECUTE //////////////
// Browse Root
BrowseDescription browse = new BrowseDescription();
browse.setNodeId( Identifiers.RootFolder );
browse.setBrowseDirection( BrowseDirection.Forward );
browse.setIncludeSubtypes( true );
browse.setNodeClassMask( NodeClass.Object, NodeClass.Variable );
browse.setResultMask( BrowseResultMask.All );
BrowseResponse res3 = mySession.Browse( null, null, null, browse );
System.out.println(res3);
// Read Namespace Array
ReadResponse res5 = mySession.Read(
null,
null,
TimestampsToReturn.Neither,
new ReadValueId(Identifiers.Server_NamespaceArray, Attributes.Value, null, null )
);
String[] namespaceArray = (String[]) res5.getResults()[0].getValue().getValue();
System.out.println(Arrays.toString(namespaceArray));
// Read a variable
ReadResponse res4 = mySession.Read(
null,
500.0,
TimestampsToReturn.Source,
new ReadValueId(new NodeId(6, 1710), Attributes.Value, null, null )
);
System.out.println(res4);
res4 = mySession.Read(
null,
500.0,
TimestampsToReturn.Source,
new ReadValueId(new NodeId(6, 1710), Attributes.DataType, null, null )
);
System.out.println(res4);
///////////// SHUTDOWN /////////////
mySession.close();
mySession.closeAsync();
//////////////////////////////////////
}
}
异常：
SampleClient: Connecting to opc.tcp://mfactorengineering.com:4840 .. 2017-07-20 11:24:34,909 [main] INFO CryptoUtil - SecurityProvider initialized from org.bouncycastle.jce.provider.BouncyCastleProvider
2017-07-20 11:24:34,909 [main] INFO CryptoUtil - Using SecurityProvider BC
2017-07-20 11:24:35,549 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connecting
2017-07-20 11:24:36,142 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connected
2017-07-20 11:24:36,753 [main] INFO SecureChannelTcp - 1804305022 Closed
2017-07-20 11:24:36,768 [TcpConnection/Read] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Closed (expected)
2017-07-20 11:24:36,768 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Closed
2017-07-20 11:24:36,768 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connecting
2017-07-20 11:24:37,408 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connect failed
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:209)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at java.net.SocketInputStream.read(SocketInputStream.java:223)
at org.opcfoundation.ua.utils.bytebuffer.InputStreamReadable._get(InputStreamReadable.java:53)
at org.opcfoundation.ua.utils.bytebuffer.InputStreamReadable.getInt(InputStreamReadable.java:144)
at org.opcfoundation.ua.transport.tcp.io.TcpConnection.open(TcpConnection.java:500)
at org.opcfoundation.ua.transport.tcp.io.SecureChannelTcp.open(SecureChannelTcp.java:565)
at org.opcfoundation.ua.application.Client.createSecureChannel(Client.java:641)
at org.opcfoundation.ua.application.Client.createSecureChannel(Client.java:555)
at org.opcfoundation.ua.application.Client.createSessionChannel(Client.java:370)
at org.opcfoundation.ua.application.Client.createSessionChannel(Client.java:345)
at org.opcfoundation.ua.examples.SampleClient.main(SampleClient.java:120)
2017-07-20 11:24:37,464 [main] WARN SecureChannelTcp - Connection failed: Bad_CommunicationError (code=0x80050000, description="2147811328, Connection reset")
2017-07-20 11:24:37,464 [main] WARN SecureChannelTcp - Bad_CommunicationError: Retrying
2017-07-20 11:24:37,464 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connecting
2017-07-20 11:24:38,056 [main] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Connected
2017-07-20 11:24:38,368 [TcpConnection/Read] WARN TcpConnection - mfactorengineering.com/184.173.118.46:4840 Error
org.opcfoundation.ua.common.ServiceResultException: Bad_SecurityChecksFailed (code=0x80130000, description="An error occurred verifying security")
at org.opcfoundation.ua.transport.tcp.io.TcpConnection$ReadThread.run(TcpConnection.java:782)
2017-07-20 11:24:38,368 [TcpConnection/Read] INFO TcpConnection - mfactorengineering.com/184.173.118.46:4840 Closed
Exception in thread "main" org.opcfoundation.ua.common.ServiceResultException: Bad_SecurityChecksFailed (code=0x80130000, description="An error occurred verifying security")
at org.opcfoundation.ua.transport.tcp.io.TcpConnection$ReadThread.run(TcpConnection.java:782)
该示例的编写使其始终选择最安全的连接，另一方面，这要求服务器在启用连接之前接受客户端应用程序的应用程序实例证书。 Bad_SecurityChecksFailed 是服务器不接受客户端连接时的标准错误代码。
由于您无法控制这些公开可用的服务器以使其信任您的客户端应用程序，因此您唯一的选择是尝试在没有安全保护的情况下进行连接（如果服务器允许的话）。
为此，您需要更改代码，使其选择不安全的端点。
替换
SessionChannel mySession = myClient.createSessionChannel(url);
和
EndpointDescription[] endpoints = myClient.discoverEndpoints(url);
// Filter out all but opc.tcp protocol endpoints
endpoints = selectByProtocol(endpoints, "opc.tcp");
// Filter out all but Signed & Encrypted endpoints
endpoints = selectByMessageSecurityMode(endpoints, MessageSecurityMode.None);
// Choose one endpoint
if (endpoints.length == 0)
throw new Exception("The server does not support insecure connections");
EndpointDescription endpoint = endpoints[0];
//////////////////////////////////////
SessionChannel mySession = myClient.createSessionChannel(endpoint);
（根据ClientExample1的行数）