commit ee34224cb72312f022724423814ad3c1d04fc734
Author: heimoshuiyu <heimoshuiyu@gmail.com>
Date:   Tue Sep 3 16:52:58 2024 +0800

    init

diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..7779fd3
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,2 @@
+/.git
+/ip
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7779fd3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/.git
+/ip
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
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index 0000000..33e9585
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,17 @@
+FROM docker.io/golang:1.23.0 AS builder
+
+WORKDIR /app
+
+COPY . .
+
+RUN make
+
+FROM alpine:latest
+
+WORKDIR /app
+
+COPY --from=builder /app/ip .
+
+EXPOSE 8080
+
+CMD ["/app/ip"]
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..79a4c37
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,3 @@
+.PHONY: linux
+linux:
+	CGO_ENABLED=0 go build -v -ldflags '-extldflags=-static'
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..efafe10
--- /dev/null
+++ b/README.md
@@ -0,0 +1,9 @@
+# ip tool
+
+the simplest ip tool
+
+usage:
+
+```bash
+curl http://yourservice:8080/
+```
\ No newline at end of file
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..857e8ac
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module ip
+
+go 1.23.0
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..9b36940
--- /dev/null
+++ b/main.go
@@ -0,0 +1,38 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"net/http"
+	"strconv"
+)
+
+func main() {
+	port := flag.Int("port", 8080, "port to listen on")
+	flag.Parse()
+
+	mux := http.NewServeMux()
+	mux.HandleFunc("/", IPHandler)
+
+	log.Println("Listening on port", *port)
+	http.ListenAndServe(":"+strconv.Itoa(*port), mux)
+}
+
+func IPHandler(w http.ResponseWriter, r *http.Request) {
+	addr := r.RemoteAddr
+
+	w.Write([]byte(addr))
+	w.Write([]byte("\n"))
+
+	if r.Header.Get("X-Real-IP") != "" {
+		w.Write([]byte("X-Real-IP: "))
+		w.Write([]byte(r.Header.Get("X-Real-IP")))
+		w.Write([]byte("\n"))
+	}
+
+	if r.Header.Get("X-Forwarded-For") != "" {
+		w.Write([]byte("X-Forwarded-For: "))
+		w.Write([]byte(r.Header.Get("X-Forwarded-For")))
+		w.Write([]byte("\n"))
+	}
+}