can grpc request rewrite uri?

[gdonlyathw]

when i use kong.service.request.set_path() modify upstream_uri for Rest request,it is ok.
but for GRPC request, it is not ok.

[bungle]

I think you are right, this needs to be fixed. The problem I think currently is that grpc_pass does not allow path like the proxy_pass does:

http://nginx.org/en/docs/http/ngx_http_grpc_module.html#grpc_pass
vs.
http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_pass

[bungle]

I am wondering though, could we call this:
https://github.com/openresty/lua-nginx-module#ngxreqset_uri

Before or after ngx.exec("@grpc") or ngx.exec("@grpcs")

[bungle]

Nginx 1.17.8 added:

• Feature: variables support in the "grpc_pass" directive.

So perhaps that contains support for this. For this we need to wait for next OpenResty release.

Edit: perhaps it still doesn't support the uri/path:
https://trac.nginx.org/nginx/changeset?reponame=nginx&old=6439ef81e37dfccfc3a8c57fed278bf56014ef39%40src%2Fhttp%2Fmodules%2Fngx_http_grpc_module.c&new=6439ef81e37dfccfc3a8c57fed278bf56014ef39%40src%2Fhttp%2Fmodules%2Fngx_http_grpc_module.c

[bungle]

It might be even "not recommended" as of now, see e.g.:
grpc/grpc-dotnet#110
grpc/grpc#14900

[kikito]

It seems this is not currently feasible right now, so I'm closing this issue.