[#470] grpc: Increase message limits

For send message limit set to 2GiB, but there are custom
GET/GET RANGE limiters.
For receive message limit set to 256 MiB, but actual chunk size
will be managed by client.

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

cmd/frostfs-node/grpc.go

@@ -17,11 +17,13 @@ import (
 	"google.golang.org/grpc/credentials"
 )
 
+const maxRecvMsgSize = 256 << 20
+
 func initGRPC(c *cfg) {
 	var successCount int
 	grpcconfig.IterateEndpoints(c.appCfg, func(sc *grpcconfig.Config) {
 		serverOpts := []grpc.ServerOption{
-			grpc.MaxSendMsgSize(maxMsgSize),
+			grpc.MaxRecvMsgSize(maxRecvMsgSize),
 			grpc.ChainUnaryInterceptor(
 				metrics.NewUnaryServerInterceptor(),
 				tracing.NewUnaryServerInterceptor(),