From 137e164d028a18a9f4f251e2250553a6a3524d6c Mon Sep 17 00:00:00 2001
From: terminaldweller <devi@terminaldweller.com>
Date: Thu, 1 May 2025 20:55:00 +0000
Subject: added the proxy protocol to the server

---
 docker-compose.yaml |  1 -
 go.mod              |  4 +++-
 icanhazallips.go    | 15 ++++++++++++++-
 nginx.conf          |  2 ++
 4 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/docker-compose.yaml b/docker-compose.yaml
index 15b75f7..22f5dd0 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -1,4 +1,3 @@
-version: "3"
 services:
   icanhazallips:
     image: icanhazallips
diff --git a/go.mod b/go.mod
index 6f0768c..e8954e0 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,5 @@
 module icanhazallips
 
-go 1.19
+go 1.24.0
+
+require github.com/pires/go-proxyproto v0.8.0
diff --git a/icanhazallips.go b/icanhazallips.go
index 1564ef4..48222bf 100644
--- a/icanhazallips.go
+++ b/icanhazallips.go
@@ -10,6 +10,8 @@ import (
 	"strconv"
 	"strings"
 	"time"
+
+	"github.com/pires/go-proxyproto"
 )
 
 const (
@@ -166,5 +168,16 @@ func main() {
 		Handler:           nil,
 	}
 
-	log.Fatal(server.ListenAndServe())
+	ln, err := net.Listen("tcp", config.Addr)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	proxyListener := &proxyproto.Listener{
+		Listener:          ln,
+		ReadHeaderTimeout: time.Duration(config.ReadHeaderTimeout) * time.Second,
+	}
+	defer proxyListener.Close()
+
+	log.Fatal(server.Serve(proxyListener))
 }
diff --git a/nginx.conf b/nginx.conf
index 5a9c8a3..b917535 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -26,6 +26,8 @@ http {
     add_header X-XSS-Protection "1; mode=block" always;
     add_header Referrer-Policy "no-referrer";
     fastcgi_hide_header X-Powered-By;
+    proxy_set_header X-Real-IP       $proxy_protocol_addr;
+    proxy_set_header X-Forwarded-For $proxy_protocol_addr;
 
     error_page 401 403 404 /404.html;
     location / {
-- 
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