opcua provides easy and painless handling of OPC UA Binary Protocol in pure Golang.
See example directory for sample codes.
Currently simple client, server implementation and sender, which lets user to manipulate any parts including connection setup sequence, are available.
opcua is implemented in pure Golang. So just go get the following packages.
Vendoring is planned to be implemented after Go 1.12 release.
github.com/pkg/errors
github.com/google/go-cmp
github.com/gopcua/opcua
client opens the SecureChannel with the endpoint specified in command-line arguments.
If --payload is given, it sends any data on top of UASC headers.
cd examples/client
go run client.go --endpoint "opc.tcp://endpoint.example/opcua/server" --payload <payload in hex stream format>
server listens and accepts the SecureChannel opening request from the client on specified network.
cd examples/client
go run server.go --endpoint "opc.tcp://endpoint.example/opcua/server"
We believe our idea to implement the OPC-UA protocol in Golang can contribute to fostering the industry, and we are trying to make this project production-ready. However, due to the lack of resources the progress is not quite good actually. So, we want your help.
As listed in GitHub issues and projects, we still have a lot of things to be considered/implemented. Resolving the issues listed by writing your code would help really much.
Please feel free to open an issue to report anything you face when using the package.
Please don't hesitate to post your thoughts on some issues and/or pull requests. It also helps us a lot.
The number of stars or shares on Twitter(or anything else) is a great motivation for us to work on the project continuously.
| Categories | Features | Supported | Notes |
|---|---|---|---|
| Encoding | OPC UA Binary | Yes | |
| OPC UA JSON | |||
| OPC UA XML | |||
| Transport | UA-TCP UA-SC UA Binary | Yes | |
| OPC UA HTTPS | |||
| SOAP-HTTP WS-SC UA Binary | |||
| SOAP-HTTP WS-SC UA XML | |||
| SOAP-HTTP WS-SC UA XML-UA Binary | |||
| Encryption | None | Yes | |
| Basic128Rsa15 | |||
| Basic256 | |||
| Basic256Sha256 | |||
| Authentication | Anonymous | ||
| User Name Password | |||
| X509 Certificate |
| Service Set | Service | Supported | Notes |
|---|---|---|---|
| Discovery Service Set | FindServers | Yes | |
| FindServersOnNetwork | Yes | ||
| GetEndpoints | Yes | ||
| RegisterServer | |||
| RegisterServer2 | |||
| Secure Channel Service Set | OpenSecureChannel | Yes | |
| CloseSecureChannel | Yes | ||
| Session Service Set | CreateSession | Yes | |
| CloseSession | Yes | ||
| ActivateSession | Yes | ||
| Cancel | Yes | ||
| Node Management Service Set | AddNodes | ||
| AddReferences | |||
| DeleteNodes | |||
| DeleteReferences | |||
| View Service Set | Browse | ||
| BrowseNext | |||
| TranslateBrowsePathsToNodeIds | |||
| RegisterNodes | |||
| UnregisterNodes | |||
| Query Service Set | QueryFirst | ||
| QueryNext | |||
| Attribute Service Set | Read | Yes | |
| Write | Yes | ||
| HistoryRead | |||
| HistoryUpdate | |||
| Method Service Set | Call | ||
| MonitoredItems Service Set | CreateMonitoredItems | ||
| DeleteMonitoredItems | |||
| ModifyMonitoredItems | |||
| SetMonitoringMode | |||
| SetTriggering | |||
| Subscription Service Set | CreateSubscription | Partial | Request-only |
| ModifySubscription | |||
| SetPublishingMode | |||
| Publish | |||
| Republish | |||
| DeleteSubscriptions | |||
| TransferSubscriptions |
Tables here are generated by Markdown Tables Generator
This is still experimental project. Any part of the exported API may be changed before first release.
The gopcua team.
website under construction... stay tuned!