Question

我正在使用节点OPC-UA客户端并出现以下错误

Error: cannot  coerce value=4 to Enum
at _decode_enumeration (/Users/xxx/apps/node-opcua-sample/node_modules/node-opcua-factory/src/factories_enumerations.js:52:23)
at UserTokenPolicy.decode (/Users/xxx/apps/node-opcua-sample/node_modules/node-opcua-service-endpoints/_generated_/_auto_generated_UserTokenPolicy.js:139:22)
at /Users/xxx/apps/node-opcua-sample/node_modules/node-opcua-service-endpoints/_generated_/_auto_generated_EndpointDescription.js:181:12
at exports.decodeArray (/Users/xxx/apps/node-opcua-sample/node_modules/node-opcua-basic-types/src/array.js:40:18)
at EndpointDescription.decode (/Users/xxx/apps/node-opcua-sample/node_modules/node-opcua-service-endpoints/_generated_/_auto_generated_EndpointDescription.js:179:31)
at /Users/xxx/apps/node-opcua-sample/node_modules/node-opcua-service-endpoints/_generated_/_auto_generated_GetEndpointsResponse.js:105:12
at exports.decodeArray (/Users/xxx/apps/node-opcua-sample/node_modules/node-opcua-basic-types/src/array.js:40:18)
at GetEndpointsResponse.decode (/Users/xxx/apps/node-opcua-sample/node_modules/node-opcua-service-endpoints/_generated_/_auto_generated_GetEndpointsResponse.js:103:22)
at MessageBuilder._safe_decode_message_body (/Users/xxx/apps/node-opcua-sample/node_modules/node-opcua-secure-channel/src/message_builder.js:403:20)
at MessageBuilder._decode_message_body (/Users/xxx/apps/node-opcua-sample/node_modules/node-opcua-secure-channel/src/message_builder.js:450:18)

我已经将此opc UCA（https://github.com/node-opcua/node-opcua）用于其他ocpUA服务器，并且它们工作正常。

UserTokenPolicy令牌似乎有问题，但是默认情况下它不是应该匿名登录吗？可能还有其他问题吗？

请注意，它可与prosys opcua客户端一起使用。

Answer 1

看起来UserIdentityTokenType = 4是not supported by node-opcua yet ...

const EnumUserIdentityTokenType_Schema = {
  name: "EnumUserIdentityTokenType",
  enumValues: {
    ANONYMOUS: 0,
    USERNAME: 1,
    CERTIFICATE: 2,
    ISSUEDTOKEN: 3
  }
};

OPC规范1.04也仅指定4 possible values from 0 to 3

<opc:EnumeratedType Name="UserTokenType" LengthInBits="32">
   <opc:Documentation>The possible user token types. 
   </opc:Documentation>
  <opc:EnumeratedValue Name="Anonymous" Value="0" />
  <opc:EnumeratedValue Name="UserName" Value="1" />
  <opc:EnumeratedValue Name="Certificate" Value="2" />
  <opc:EnumeratedValue Name="IssuedToken" Value="3" />
</opc:EnumeratedType>

请在https://github.com/node-opcua/node-opcua中提出问题，并提供详细说明以重现此行为

opcua客户端节点：出现错误：无法将value = 4强制转换为Enum

1 个答案: