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60 lines
1.1 KiB
60 lines
1.1 KiB
package main
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import (
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"flag"
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"fmt"
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"io"
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"log"
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"net/http"
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"strings"
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)
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var (
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ports = flag.String("ports", "", "comma-separated list of ports to listen on")
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)
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type CatHandler struct{}
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var _ http.Handler = &CatHandler{}
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func (cs *CatHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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log.Printf("[%s] %s %s", req.Host, req.Method, req.URL.Path)
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w.Write([]byte(fmt.Sprintf("%s %s %s\n", req.Proto, req.Method, req.URL.Path)))
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for k, v := range req.Header {
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w.Write([]byte(fmt.Sprintf("%s: %s\n", k, strings.Join(v, "; "))))
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}
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w.Write([]byte{'\n'})
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if req.Body != nil {
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io.Copy(w, req.Body)
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}
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}
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func main() {
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flag.Parse()
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errch := make(chan error)
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done := make(chan struct{})
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for _, p := range strings.Split(*ports, ",") {
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port := strings.TrimSpace(p)
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if port[0] != ':' {
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port = ":" + port
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}
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go func() {
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log.Printf("listening on %s\n", port)
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if err := http.ListenAndServe(port, new(CatHandler)); err != nil {
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log.Println(err)
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errch <- err
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}
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}()
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}
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go func() {
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<-errch
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done <- struct{}{}
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}()
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<-done
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}
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