Golang-没有选择器的软件包用户

Question

Please, I searched this a lot and after not been able to find, I am writing and not that I didn't try to search all over first. Couldn't get the right answer. I even tried to check Revel's function and couldn't get the answer from there as well.

When I run this program I get this error for line

./test.go:11: use of package http without selector

This error points at the line below where I have written

*http

inside the struct

Confusing part is that with test and dot I even get auto complete with VIM. So I don't know why is the error. Is it that it has to be somewhat like

*(net/http)

or something like that ?

package main

import (
    "fmt"
    "net/http"
)

type HandleHTTP struct {
    *http
}

func handler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Path is %s", r.URL.Path[1:])

}

func main() {

    test := HandleHTTP{}

    test.http.HandleFunc("/", handler)
    test.http.ListenAndServe(":8080", nil)

}

Answer 1

If you want to have two or more instances serving from different ports you need to spin up two, or more, server. Would something like this, perhaps, work for you?

package main

import (
    "fmt"
    "net/http"
)

type HandleHTTP struct {
    http *http.Server
}

func handler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Path is %s", r.URL.Path[1:])

}

func main() {
    mux1 := http.NewServeMux()
    mux1.HandleFunc("/", handler)
    test1 := HandleHTTP{http:&http.Server{Addr:":8081", Handler:mux1}}

    mux2 := http.NewServeMux()
    mux2.HandleFunc("/", handler)
    test2 := HandleHTTP{http:&http.Server{Addr:":8082", Handler:mux2}}

    // run the first one in a goroutine so that the second one is executed
    go test1.http.ListenAndServe()
    test2.http.ListenAndServe()

}