sniffing protocol for port forwarding

config/parsing/chain.go

@@ -216,6 +216,7 @@ func ParseHop(cfg *config.HopConfig) (chain.Hop, error) {
 			chain.HostMapperNodeOption(registry.HostsRegistry().Get(v.Hosts)),
 			chain.MetadataNodeOption(nm),
 			chain.HostNodeOption(host),
+			chain.ProtocolNodeOption(v.Protocol),
 		)
 		nodes = append(nodes, node)
 	}

config/parsing/service.go

@@ -250,6 +250,7 @@ func parseForwarder(cfg *config.ForwarderConfig) (chain.Hop, error) {
 						Name:     node.Name,
 						Addr:     node.Addr,
 						Host:     node.Host,
+						Protocol: node.Protocol,
 						Bypass:   node.Bypass,
 						Bypasses: node.Bypasses,
 					},