gistfile1.go

package main

import (
	"fmt"
	"log"
	"net/http"
)

func main() {
	http.HandleFunc("/hijack", func(w http.ResponseWriter, r *http.Request) {
		hj, ok := w.(http.Hijacker)
		print("Made connection\n")
		if !ok {
			http.Error(w, "webserver doesn't support hijacking", http.StatusInternalServerError)
			return
		}
		conn, bufrw, err := hj.Hijack()
		print("Hijacked\n")
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		defer conn.Close()
		bufrw.WriteString("Now we're speaking raw TCP. Say hi: ")
		bufrw.Flush()
		print("Initial flush\n")
		s, err := bufrw.ReadString('\n')
		if err != nil {
			log.Printf("Error reading string: %v", err)
			return
		}
		fmt.Fprintf(bufrw, "You said: %q \nBye.\n", s)
		bufrw.Flush()
	})

	log.Fatal(http.ListenAndServe(":8080", nil))
}