some refactoring

dns.go

@@ -45,10 +45,14 @@ func NewDNSHandler(blockForwardIP string, cache DNSCacher, blocklist BlocklistMa
 }
 
 func (h *dnsHandler) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
-	var msg dns.Msg
-	msg.Authoritative = true
-	msg.RecursionAvailable = true
-	msg.Answer = []dns.RR{}
+	msg := dns.Msg{
+		MsgHdr: dns.MsgHdr{
+			Authoritative:      true,
+			RecursionAvailable: true,
+		},
+		Answer: []dns.RR{},
+	}
+
 	msg.SetReply(r)
 
 	for _, question := range r.Question {

makefile

@@ -4,6 +4,8 @@ BIN := .bin
 dev: clean $(BIN)/config.json $(BIN)/$(APP)
 	sudo $(BIN)/$(APP)
 
+build-osx: $(BIN)/osx/$(APP)
+
 ci: clean package publish deploy
 
 deploy:
@@ -15,13 +17,20 @@ package:
 publish:
 	@docker push vdhsn/gopherhole
 
-
 test:
 	go test -v -cover ./...
 
 $(BIN)/$(APP): 
 	go build -v -o $(BIN)/$(APP) .
 
+$(BIN)/osx/$(APP):
+	GOOS=darwin GOARCH=amd64 \
+		go build -v -o $(BIN)/osx/$(APP) .
+
+$(BIN)/linux/$(APP):
+	GOOS=linux GOARCH=amd64 \
+		go build -v -o $(BIN)/linux/$(APP) .
+
 $(BIN)/config.json: $(BIN)
 	@cp ./config.json $(BIN)/config.json
 
@@ -31,4 +40,4 @@ $(BIN):
 clean:
 	@rm -rf $(BIN) gohperhole debug.test _debug_bin
 
-.PHONY: ci clean deploy dev package publish test
+.PHONY: build-osx ci clean deploy dev package publish test