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7 changes: 4 additions & 3 deletions rpc/endpoints.go
Original file line number Diff line number Diff line change
Expand Up @@ -22,8 +22,9 @@ import (
"github.com/ethereum/go-ethereum/log"
)

// checkModuleAvailability check that all names given in modules are actually
// available API services.
// checkModuleAvailability checks that all names given in modules are actually
// available API services. It assumes that the MetadataApi module ("rpc") is always available;
// the registration of this "rpc" module happens in NewServer() and is thus common to all endpoints.
func checkModuleAvailability(modules []string, apis []API) (bad, available []string) {
availableSet := make(map[string]struct{})
for _, api := range apis {
Expand All @@ -33,7 +34,7 @@ func checkModuleAvailability(modules []string, apis []API) (bad, available []str
}
}
for _, name := range modules {
if _, ok := availableSet[name]; !ok {
if _, ok := availableSet[name]; !ok && name != MetadataApi {
bad = append(bad, name)
}
}
Expand Down