Detect that a VPN is needed

    IPv6() returns true if it's working
    display duration
    a 'DNS Lookup Status' window
    actual dig results
    display status and failure counters
    count lookup failures and successes
    add TCP dns lookup
    logic to test if dns is working at all
    add DNS over HTTPS
    cloudflare new & update kind of working
    holy shit, go.wit.com finally works with git mod tidy
    working, but cloudflare api stuff is broken
    AAAA '(none)' logic detection is better
    cloudflare control panel
    display the working real AAAA addresses

Signed-off-by: Jeff Carr <[email protected]>

1 files changed, 62 insertions, 0 deletions

diff --git a/dns-https.go b/dns-https.go
new file mode 100644
index 0000000..00eec82
--- /dev/null
+++ b/dns-https.go
@@ -0,0 +1,62 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+)
+
+// dnsLookupDoH performs a DNS lookup for AAAA records over HTTPS.
+func dnsLookupDoH(domain string) ([]string, error) {
+	var ipv6Addresses []string
+
+	// Construct the URL for a DNS query with Google's DNS-over-HTTPS API
+	url := fmt.Sprintf("https://dns.google/resolve?name=%s&type=AAAA", domain)
+
+	// Perform the HTTP GET request
+	resp, err := http.Get(url)
+	if err != nil {
+		return nil, fmt.Errorf("error performing DNS-over-HTTPS request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	// Read and unmarshal the response body
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, fmt.Errorf("error reading response: %w", err)
+	}
+
+	var data struct {
+		Answer []struct {
+			Data string `json:"data"`
+		} `json:"Answer"`
+	}
+
+	if err := json.Unmarshal(body, &data); err != nil {
+		return nil, fmt.Errorf("error unmarshaling response: %w", err)
+	}
+
+	// Extract the IPv6 addresses
+	for _, answer := range data.Answer {
+		ipv6Addresses = append(ipv6Addresses, answer.Data)
+	}
+
+	return ipv6Addresses, nil
+}
+
+/*
+func main() {
+	domain := "google.com"
+	ipv6Addresses, err := dnsLookupDoH(domain)
+	if err != nil {
+		fmt.Println("Error:", err)
+		return
+	}
+
+	fmt.Printf("IPv6 Addresses for %s:\n", domain)
+	for _, addr := range ipv6Addresses {
+		fmt.Println(addr)
+	}
+}
+*/