go runtime_error ai_generated true

rpc error: code = Internal desc = grpc: error while marshaling: proto: syntax error (line 1:1): unexpected token

ID: go/grpc-internal-error-marshalling

Also available as: JSON · Markdown · 中文
80%Fix Rate
83%Confidence
0Evidence
2024-04-05First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1.0 active — — —
1.1 active — — —

Root Cause

The protobuf message being sent is malformed or does not match the schema, causing marshalling failure.

generic

中文

发送的protobuf消息格式错误或与模式不匹配，导致编组失败。

Workarounds

  1. 85% success Validate the protobuf message before sending. 
    req := &pb.MyRequest{Name: "test"}
if err := req.Validate(); err != nil {
    log.Fatalf("invalid request: %v", err)
}
// Use proto.Marshal to check if marshalling works
if _, err := proto.Marshal(req); err != nil {
    log.Fatalf("marshal error: %v", err)
}
  2. 80% success Ensure the protobuf library version matches the generated code. 
    Check go.mod for google.golang.org/protobuf version and run 'go mod tidy' to sync.

Dead Ends

Common approaches that don't work:

  1. Ignore the error and retry the same request. 100% fail

    The same malformed message will cause the same error repeatedly.

  2. Change the protobuf field types without updating the definition. 95% fail

    Field types are fixed in the .proto file; changing them manually leads to incompatibility.