Merge PR #5671: CORS - Add a Flag for CORS

client/flags/flags.go

@@ -68,6 +68,7 @@ const (
 	FlagKeyringBackend     = "keyring-backend"
 	FlagPage               = "page"
 	FlagLimit              = "limit"
+	FlagUnsafeCORS         = "unsafe-cors"
 )
 
 // LineBreak can be included in a command list to provide a blank line
@@ -141,6 +142,7 @@ func RegisterRestServerFlags(cmd *cobra.Command) *cobra.Command {
 	cmd.Flags().Uint(FlagMaxOpenConnections, 1000, "The number of maximum open connections")
 	cmd.Flags().Uint(FlagRPCReadTimeout, 10, "The RPC read timeout (in seconds)")
 	cmd.Flags().Uint(FlagRPCWriteTimeout, 10, "The RPC write timeout (in seconds)")
+	cmd.Flags().Bool(FlagUnsafeCORS, false, "Allows CORS requests from all domains. For development purposes only, use it at your own risk.")
 
 	return cmd
 }