Count TLDs

internet/dns/main.go

@@ -0,0 +1,39 @@
+package main
+
+import(
+	"fmt"
+	"io"
+	"log"
+	"bufio"
+	"strings"
+	"net/http"
+)
+
+func main() {
+	url := "https://data.iana.org/TLD/tlds-alpha-by-domain.txt"
+
+
+	resp, err := http.Get(url)
+	if err != nil {
+		log.Fatal(err)	
+	}
+
+	tld_count := 0
+	reader := bufio.NewReader(resp.Body)
+	for {
+		buf, err := reader.ReadBytes('\n')
+		if err == io.EOF {
+			break
+		} else if err != nil {
+			log.Fatal(err)	
+		}
+		line := string(buf)
+		if strings.HasPrefix(line, "#") {
+			continue
+		}
+
+		fmt.Print(line)
+		tld_count += 1
+    	}
+	fmt.Printf("count: %d TLDs\n", tld_count)
+}