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32 lines
660 B
Go
32 lines
660 B
Go
8 years ago
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package main
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import (
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"fmt"
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"io"
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"log"
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"net"
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"net/http"
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)
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func main() {
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http.HandleFunc("/", getIP)
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fmt.Println("listening on port 3000")
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http.ListenAndServe(":3000", nil)
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}
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func getIP(w http.ResponseWriter, req *http.Request) {
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ip, _, err := net.SplitHostPort(req.RemoteAddr)
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if err != nil {
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handleError(w, err, "Could not get IP address from request")
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return
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}
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io.WriteString(w, ip+"\n")
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log.Printf("Give response IP %s\n", ip)
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}
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func handleError(resp http.ResponseWriter, err error, message string) {
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resp.WriteHeader(http.StatusBadRequest)
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io.WriteString(resp, message)
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log.Printf("Error handling request: %s (%s)", message, err)
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}
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