adds more methods to get public ip address in case one method is not available.

build-deluge.jenkins

@@ -13,28 +13,65 @@ printf "%s\n" "Route Updated"
 """
 
 def connectivity_test = """#! /usr/bin/env sh
+getPublicIP() {
+    ip=""
+
+    # curl lookups
+    for i in "https://icanhazip.com" "https://ifconfig.me" "https://api.ipify.org" "https://bot.whatismyipaddress.com" "https://ipinfo.io/ip" "https://ipecho.net/plain"; do
+        ip=\$(curl -s "${i}")
+        if [ "\${ip}" != "" ]; then
+            printf '%s' "\${ip}"
+            return 0
+        fi
+    done
+
+    # DNS Lookups
+    ip=\$(dig -4 @ns1.google.com TXT o-o.myaddr.l.google.com +short | sed -e 's/"//g')
+    if [ "\${ip}" != "" ]; then
+        printf '%s' "\${ip}"
+        return 0
+    fi
+
+    ip=\$(dig -4 @resolver1.opendns.com A myip.opendns.com +short | sed -e 's/"//g')
+    if [ "\${ip}" != "" ]; then
+        printf '%s' "\${ip}"
+        return 0
+    fi
+
+    ip=\$(dig -4 @1.0.0.1 txt ch whoami.cloudflare +short | sed -e 's/"//g')
+    if [ "\${ip}" != "" ]; then
+        printf '%s' "\${ip}"
+        return 0
+    fi
+}
+
 if ! curl --silent --fail --insecure http://localhost:8112 > /dev/null; then
     printf '%s\\n' "Deluge not running."
     exit 100
 fi
+
 if [ -z "\${DDNS_HOST}" ] || [ "\${DDNS_HOST}" = "" ]; then
     printf '%s\\n' "Dynamic DNS host is not set."
     exit 100
 fi
-DIP=\$(dig -4 @ns1.google.com TXT o-o.myaddr.l.google.com +short | sed -e 's/"//g')
+
+DIP=\$(getPublicIP)
 if [ -z "\${DIP+x}" ] || [ "\${DIP}" = "" ]; then
     printf '%s\\n' "Unable to detect real-world IP."
     exit 100
 fi
+
 KIP=\$(dig "\${DDNS_HOST}" +short)
 if [ -z "\${KIP+x}" ] || [ "\${KIP}" = "" ]; then
     printf '%s\\n' "Unable to get known IP."
     exit 100
 fi
+
 if [ "\${DIP}" = "\${KIP}" ]; then
     printf '%s\\n' "VPN is not functional."
     exit 100
 fi
+
 if ! ping -c 2 google.com > /dev/null; then
     printf '%s\\n' "No internet connectivity."
     exit 100
@@ -46,7 +83,7 @@ LABEL maintainer="The_Spider <spider@smoothnet.org>"
 
 COPY route-override.sh connectivity_test.sh /root/
 
-RUN apk add --no-cache openvpn iputils bind-tools && \\
+RUN apk add --no-cache openvpn iputils bind-tools curl && \\
     chmod +x /root/route-override.sh /root/connectivity_test.sh
 """