This question already has an answer here:
package main
import (
"fmt"
"net/http"
)
func main() {
http.HandleFunc("/", handler)
http.HandleFunc("/cookie", cookie)
http.ListenAndServe(":8080", nil)
}
func handler(w http.ResponseWriter, r *http.Request) {
// do ...
}
func cookie(w http.ResponseWriter, r *http.Request) {
cd, _ := r.Cookie("hello")
if cd.Value == "username" {
// do ...
}
}
if run:
$ go run main.go
no problem server is work, but in firfox when inserting "/cookie" path the problem occurs.
Error:
runtime error: invalid memory address or nil pointer dereference
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