Decoding Issue

[Nido2001]

Sometimes with large requests 100kb+ i recieve a InvalidProtocolBufferException Exception

Status(StatusCode="Unavailable", Detail="Error starting gRPC call. InvalidProtocolBufferException: String is invalid UTF-8. DecoderFallbackException: Unable to translate bytes [8F] at index 1 from specified code page to Unicode.", DebugException="Google.Protobuf.InvalidProtocolBufferException: String is invalid UTF-8.)

Grpc.Core.RpcException

The request is completed its just failing to parse the response at times.

However if i was to mitm the reqeust and parse the response body myself manually i have no issues

request headers
te: trailers
grpc-accept-encoding: identity,gzip,deflate
grpc-timeout: 60100m
accept-encoding: gzip, deflate, br
content-type: application/grpc

response headers
content-type: application/grpc
x-envoy-upstream-service-time: 0
vary: Accept-Encoding
content-encoding: gzip
date: Thu, 20 Mar 2025 15:12:30 GMT
server: API Gateway
x-envoy-decorator-operation: ingress-gateway.PROD
strict-transport-security: max-age=31536000; includeSubDomains
via: 1.1 google
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000

[Nido2001]

Issue was in a new build of Google.Protobuf