Grpc Error Code 12

The subject of grpc errorcode 12 encompasses a wide range of important elements. gRPC keeps returning errorcode 12 from server - Stack Overflow. Error code 12 is "UNIMPLEMENTED". Check your proto and make sure your server is implementing the correct RPC method (correct upper/lower case for method name and things like that)

When an error situation occurs, the gRPC library may produce a corresponding status. The library may do this either on the client- or the server-side. Only a subset of the pre-defined status codes are generated by the gRPC libraries. In this context, gRPC - Unimplemented Error 12 - DEV Community.

I had the great privilege of debugging a gRPC Error Code 12 - Unimplemented for 2 days because my client was using older proto files generated without the "package ____ " line while my server had the newer generated files WITH "package ____" on it. Error handling with gRPC on .NET | Microsoft Learn. Building on this, an error occurred inside the client when making the gRPC call. For example, a client makes a gRPC call, can't connect to the server, and throws an error with a status of UNAVAILABLE. 一个关于proto 文件的经验分享 ：gRPC 跨语言双端通信显示错误码：12 UNIMPLEMENTED （附赠gRPC错误码表）.

文章讲述了C++客户端在调用GolanggRPC服务时遇到的‘unknownservice’错误，原因是两个语言的.proto文件包名设置不一致。 解决方法是确保两边的包命名空间匹配。 文中还列举了gRPC错误码表以帮助理解问题背景。