From f0951df0408d9661b70317985414f1dad28ce948 Mon Sep 17 00:00:00 2001
From: Thomas LEVEIL <thomasleveil@gmail.com>
Date: Tue, 14 Feb 2017 22:48:29 +0100
Subject: [PATCH] optional IPv6 support

Fix #127 and fix #717 by improving #713
---
 README.md  |  6 ++++++
 nginx.tmpl | 13 +++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/README.md b/README.md
index 3619d94..abe6eef 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,12 @@ $ curl -H "Host: whoami.local" localhost
 I'm 5b129ab83266
 ```
 
+### IPv6 support
+
+You can activate the IPv6 support for the nginx-proxy container by passing the value `true` to the `ENABLE_IPV6` environment variable:
+
+    $ docker run -d -p 80:80 -e ENABLE_IPV6=true -v /var/run/docker.sock:/tmp/docker.sock:ro jwilder/nginx-proxy
+
 ### Multiple Ports
 
 If your container exposes multiple ports, nginx-proxy will default to the service running on port 80.  If you need to specify a different port, you can set a VIRTUAL_PORT env var to select a different one.  If your container only exposes one port and it has a VIRTUAL_HOST env var set, that port will be selected.
diff --git a/nginx.tmpl b/nginx.tmpl
index 2cbd156..3eb0298 100644
--- a/nginx.tmpl
+++ b/nginx.tmpl
@@ -71,10 +71,13 @@ proxy_set_header X-Forwarded-Port $proxy_x_forwarded_port;
 proxy_set_header Proxy "";
 {{ end }}
 
+{{ $enable_ipv6 := eq (or ($.Env.ENABLE_IPV6) "") "true" }}
 server {
 	server_name _; # This is just an invalid value which will never trigger on a real hostname.
 	listen 80;
+	{{ if $enable_ipv6 }}
 	listen [::]:80;
+	{{ end }}
 	access_log /var/log/nginx/access.log vhost;
 	return 503;
 }
@@ -83,7 +86,9 @@ server {
 server {
 	server_name _; # This is just an invalid value which will never trigger on a real hostname.
 	listen 443 ssl http2;
+	{{ if $enable_ipv6 }}
 	listen [::]:443 ssl http2;
+	{{ end }}
 	access_log /var/log/nginx/access.log vhost;
 	return 503;
 
@@ -151,7 +156,9 @@ upstream {{ $upstream_name }} {
 server {
 	server_name {{ $host }};
 	listen 80 {{ $default_server }};
+	{{ if $enable_ipv6 }}
 	listen [::]:80 {{ $default_server }};
+	{{ end }}
 	access_log /var/log/nginx/access.log vhost;
 	return 301 https://$host$request_uri;
 }
@@ -160,7 +167,9 @@ server {
 server {
 	server_name {{ $host }};
 	listen 443 ssl http2 {{ $default_server }};
+	{{ if $enable_ipv6 }}
 	listen [::]:443 ssl http2 {{ $default_server }};
+	{{ end }}
 	access_log /var/log/nginx/access.log vhost;
 
 	ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
@@ -214,7 +223,9 @@ server {
 server {
 	server_name {{ $host }};
 	listen 80 {{ $default_server }};
+	{{ if $enable_ipv6 }}
 	listen [::]:80 {{ $default_server }};
+	{{ end }}
 	access_log /var/log/nginx/access.log vhost;
 
 	{{ if (exists (printf "/etc/nginx/vhost.d/%s" $host)) }}
@@ -246,7 +257,9 @@ server {
 server {
 	server_name {{ $host }};
 	listen 443 ssl http2 {{ $default_server }};
+	{{ if $enable_ipv6 }}
 	listen [::]:443 ssl http2 {{ $default_server }};
+	{{ end }}
 	access_log /var/log/nginx/access.log vhost;
 	return 500;