RpcError: unexpected response content type: application/grpc

[jayden-qiu]

RpcError: unexpected response content type: application/grpc

[jayden-qiu]

I try set metadata in grpc-go, but It doesn't work

[timostamm]

there isn't exist application/grpc, what should I do ?

You cannot use gRPC in a web browser. gRPC and gRPC-web are two different things.

[jayden-qiu]

there isn't exist application/grpc, what should I do ?

You cannot use gRPC in a web browser. gRPC and gRPC-web are two different things.

but in network tab, it can response data, it looks like grpc-web-format.js bug

[jcready]

A content-type of application/grpc isn't a valid grpc-web content-type. Please read the link in the comment right above the red box in your first screenshot: https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-WEB.md#protocol-differences-vs-grpc-over-http2

Content-Type

1. application/grpc-web

• e.g. application/grpc-web+[proto, json, thrift]
• the sender should always specify the message format, e.g. +proto, +json
• the receiver should assume the default is "+proto" when the message format is missing in Content-Type (as "application/grpc-web")

2. application/grpc-web-text

• text-encoded streams of “application/grpc-web”
• e.g. application/grpc-web-text+[proto, thrift]

It doesn't seem like nginx actually provides support for grpc-web, only grpc. You'll need something like envoy to provide that support.

[jayden-qiu]

ok