Milo：连接到 (public) OPC-UA-Server
Milo: Connect to (public) OPC-UA-Server
首先：我是 OPCUA 的新手。 :)
我正在尝试将 Milo 客户端连接到我们的服务器，但不太明白出了什么问题。示例客户端和服务器可以很好地协同工作，但是当我尝试将客户端示例与 public OPC-UA-Test-Servers 之一连接时，我得到了这些异常：
15:48:34.729 [ua-netty-event-loop-0] DEBUG
org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler
- Sent Hello message on channel=[id: 0xc22800c2, L:/10.22.19.217:58947 - R:opcua.demo-this.com/52.233.134.134:51210]. 15:48:34.729 [ua-netty-event-loop-0] WARN io.netty.channel.DefaultChannelPipeline -
An exceptionCaught() event was fired, and it reached at the tail of
the pipeline. It usually means the last handler in the pipeline did
not handle the exception. java.io.IOException: An existing connection
was forcibly closed by the remote host at
sun.nio.ch.SocketDispatcher.read0(Native Method) at
sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43) at
sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) at
sun.nio.ch.IOUtil.read(IOUtil.java:192) at
sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) at
io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:221)
at
io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:898)
at
io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:242)
at
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:119)
at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:485)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:399)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:371) at
io.netty.util.concurrent.SingleThreadEventExecutor.run(SingleThreadEventExecutor.java:112)
at java.lang.Thread.run(Thread.java:745) 15:48:39.612
[ForkJoinPool.commonPool-worker-1] DEBUG
org.eclipse.milo.opcua.stack.client.ClientChannelManager - Channel
bootstrap failed: timed out waiting for acknowledge
org.eclipse.milo.opcua.stack.core.UaException: timed out waiting for
acknowledge at
org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler.lambda$startHelloTimeout(UaTcpClientAcknowledgeHandler.java:156)
at
org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler$$Lambda/469017260.run(Unknown
Source) at
io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:581)
at
io.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:655)
at
io.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:367)
at java.lang.Thread.run(Thread.java:745) 15:48:39.613 [main] ERROR
org.eclipse.milo.examples.client.ClientExampleRunner - Error running
example: UaException: status=Bad_Timeout, message=timed out waiting
for acknowledge java.util.concurrent.ExecutionException: UaException:
status=Bad_Timeout, message=timed out waiting for acknowledge at
java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
at
java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1887)
at
org.eclipse.milo.examples.client.ClientExampleRunner.createClient(ClientExampleRunner.java:56)
at
org.eclipse.milo.examples.client.ClientExampleRunner.run(ClientExampleRunner.java:103)
at
org.eclipse.milo.examples.client.BrowseExample.main(BrowseExample.java:40)
Caused by: org.eclipse.milo.opcua.stack.core.UaException: timed out
waiting for acknowledge at
org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler.lambda$startHelloTimeout(UaTcpClientAcknowledgeHandler.java:156)
at
org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler$$Lambda/469017260.run(Unknown
Source) at
io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:581)
at
io.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:655)
at
io.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:367)
at java.lang.Thread.run(Thread.java:745) 15:48:42.842
[threadDeathWatcher-2-1] DEBUG io.netty.buffer.PoolThreadCache - Freed
2 thread-local buffer(s) from thread: ua-netty-event-loop-0
我获取了示例代码并删除了 Certificate/Keypair 并将 URL 更改为 opc.tcp://opcua.demo-this.com:51210/UA/SampleServer 因为 public 服务器不需要授权：
SecurityPolicy securityPolicy = clientExample.getSecurityPolicy();
EndpointDescription[] endpoints = UaTcpStackClient.getEndpoints("opc.tcp://opcua.demo-this.com:51210/UA/SampleServer").get();
EndpointDescription endpoint = Arrays.stream(endpoints)
.filter(e -> e.getSecurityPolicyUri().equals(securityPolicy.getSecurityPolicyUri()))
.findFirst().orElseThrow(() -> new Exception("no desired endpoints returned"));
logger.info("Using endpoint: {} [{}]", endpoint.getEndpointUrl(), securityPolicy);
loader.load();
OpcUaClientConfig config = OpcUaClientConfig.builder()
.setApplicationName(LocalizedText.english("eclipse milo opc-ua client"))
.setApplicationUri("urn:eclipse:milo:examples:client")
//.setCertificate(loader.getClientCertificate())
//.setKeyPair(loader.getClientKeyPair())
.setEndpoint(endpoint)
.setIdentityProvider(clientExample.getIdentityProvider())
.setRequestTimeout(uint(5000))
.build();
return new OpcUaClient(config);
我错过了什么？
提前问候和感谢:)
隐藏在堆栈跟踪中的是真正的问题：UaException: timed out waiting for acknowledge。
也许您的防火墙或网络设置阻止了它，或者服务器没有发回它，但问题是客户端从未收到 Acknowledge 消息以响应其 Hello.
FWIW，我可以 运行 ReadExample 对抗那个 public 服务器没有问题。在 ReadExample 中，我覆盖了 getSecurityPolicy() 并返回了 SecurityPolicy.None，在 ClientExampleRunner 中，我只是替换了端点 URL。
首先：我是 OPCUA 的新手。 :)
我正在尝试将 Milo 客户端连接到我们的服务器，但不太明白出了什么问题。示例客户端和服务器可以很好地协同工作，但是当我尝试将客户端示例与 public OPC-UA-Test-Servers 之一连接时，我得到了这些异常：
15:48:34.729 [ua-netty-event-loop-0] DEBUG org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler - Sent Hello message on channel=[id: 0xc22800c2, L:/10.22.19.217:58947 - R:opcua.demo-this.com/52.233.134.134:51210]. 15:48:34.729 [ua-netty-event-loop-0] WARN io.netty.channel.DefaultChannelPipeline - An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception. java.io.IOException: An existing connection was forcibly closed by the remote host at sun.nio.ch.SocketDispatcher.read0(Native Method) at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43) at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) at sun.nio.ch.IOUtil.read(IOUtil.java:192) at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) at io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:221) at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:898) at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:242) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:119) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:485) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:399) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:371) at io.netty.util.concurrent.SingleThreadEventExecutor.run(SingleThreadEventExecutor.java:112) at java.lang.Thread.run(Thread.java:745) 15:48:39.612 [ForkJoinPool.commonPool-worker-1] DEBUG org.eclipse.milo.opcua.stack.client.ClientChannelManager - Channel bootstrap failed: timed out waiting for acknowledge org.eclipse.milo.opcua.stack.core.UaException: timed out waiting for acknowledge at org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler.lambda$startHelloTimeout(UaTcpClientAcknowledgeHandler.java:156) at org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler$$Lambda/469017260.run(Unknown Source) at io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:581) at io.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:655) at io.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:367) at java.lang.Thread.run(Thread.java:745) 15:48:39.613 [main] ERROR org.eclipse.milo.examples.client.ClientExampleRunner - Error running example: UaException: status=Bad_Timeout, message=timed out waiting for acknowledge java.util.concurrent.ExecutionException: UaException: status=Bad_Timeout, message=timed out waiting for acknowledge at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1887) at org.eclipse.milo.examples.client.ClientExampleRunner.createClient(ClientExampleRunner.java:56) at org.eclipse.milo.examples.client.ClientExampleRunner.run(ClientExampleRunner.java:103) at org.eclipse.milo.examples.client.BrowseExample.main(BrowseExample.java:40) Caused by: org.eclipse.milo.opcua.stack.core.UaException: timed out waiting for acknowledge at org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler.lambda$startHelloTimeout(UaTcpClientAcknowledgeHandler.java:156) at org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler$$Lambda/469017260.run(Unknown Source) at io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:581) at io.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:655) at io.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:367) at java.lang.Thread.run(Thread.java:745) 15:48:42.842 [threadDeathWatcher-2-1] DEBUG io.netty.buffer.PoolThreadCache - Freed 2 thread-local buffer(s) from thread: ua-netty-event-loop-0
我获取了示例代码并删除了 Certificate/Keypair 并将 URL 更改为 opc.tcp://opcua.demo-this.com:51210/UA/SampleServer 因为 public 服务器不需要授权：
SecurityPolicy securityPolicy = clientExample.getSecurityPolicy();
EndpointDescription[] endpoints = UaTcpStackClient.getEndpoints("opc.tcp://opcua.demo-this.com:51210/UA/SampleServer").get();
EndpointDescription endpoint = Arrays.stream(endpoints)
.filter(e -> e.getSecurityPolicyUri().equals(securityPolicy.getSecurityPolicyUri()))
.findFirst().orElseThrow(() -> new Exception("no desired endpoints returned"));
logger.info("Using endpoint: {} [{}]", endpoint.getEndpointUrl(), securityPolicy);
loader.load();
OpcUaClientConfig config = OpcUaClientConfig.builder()
.setApplicationName(LocalizedText.english("eclipse milo opc-ua client"))
.setApplicationUri("urn:eclipse:milo:examples:client")
//.setCertificate(loader.getClientCertificate())
//.setKeyPair(loader.getClientKeyPair())
.setEndpoint(endpoint)
.setIdentityProvider(clientExample.getIdentityProvider())
.setRequestTimeout(uint(5000))
.build();
return new OpcUaClient(config);
我错过了什么？
提前问候和感谢:)
隐藏在堆栈跟踪中的是真正的问题：UaException: timed out waiting for acknowledge。
也许您的防火墙或网络设置阻止了它，或者服务器没有发回它，但问题是客户端从未收到 Acknowledge 消息以响应其 Hello.
FWIW，我可以 运行 ReadExample 对抗那个 public 服务器没有问题。在 ReadExample 中，我覆盖了 getSecurityPolicy() 并返回了 SecurityPolicy.None，在 ClientExampleRunner 中，我只是替换了端点 URL。