英文:
Golang: How to handle and serve subdomains?
问题
问题是如何同时为域名和子域名x、y、z（或在此示例中为blog、admin和design）提供服务。当运行以下代码并请求blog.localhost:8080/时，Firefox无法找到服务器www.blog.localhost:8080。
package main
import (
"html/template"
"log"
"net/http"
)
var tpl *template.Template
const (
domain = "localhost"
blogDomain = "blog." + domain
adminDomain = "admin." + domain
designDomain = "design." + domain
)
func init() {
tpl = template.Must(template.ParseGlob("templates/*.gohtml"))
}
func main() {
// 默认处理程序
http.HandleFunc("/", index)
// 博客处理程序
http.HandleFunc(blogDomain+"/", blogIndex)
// 管理员处理程序
http.HandleFunc(adminDomain+"/", adminIndex)
// 设计处理程序
http.HandleFunc(designDomain+"/", designIndex)
http.Handle("/static/", http.StripPrefix("/static", http.FileServer(http.Dir("static"))))
http.ListenAndServe(":8080", nil)
}
func index(res http.ResponseWriter, req *http.Request) {
err := tpl.ExecuteTemplate(res, "index.gohtml", nil)
if err != nil {
log.Fatalln("模板未执行：", err)
}
}
// 博客处理程序
func blogIndex(res http.ResponseWriter, req *http.Request) {
err := tpl.ExecuteTemplate(res, "index.gohtml", nil)
if err != nil {
log.Fatalln("模板未执行：", err)
}
}
// 管理员处理程序
func adminIndex(res http.ResponseWriter, req *http.Request) {
err := tpl.ExecuteTemplate(res, "index.gohtml", nil)
if err != nil {
log.Fatalln("模板未执行：", err)
}
}
// 设计处理程序
func designIndex(res http.ResponseWriter, req *http.Request) {
err := tpl.ExecuteTemplate(res, "index.gohtml", nil)
if err != nil {
log.Fatalln("模板未执行：", err)
}
}
是否可以使用标准库来提供子域名？如果可以，应该如何实现？
编辑： 请求localhost:8080/可以正常工作。
编辑2： 我编辑了/etc/hosts文件以包含子域名：
127.0.0.1 blog.localhost.com
127.0.0.1 admin.localhost.com
127.0.0.1 design.localhost.com
对它们进行ping测试可以正常工作，但是Firefox无法访问它们。
英文:
The problem is serving the domain as well as subdomains x,y,z (or in this example blog, admin, and design). When running the following and requesting blog.localhost:8080/ firefox cant find the server www.blog.localhost:8080.
package main
import (
"html/template"
"log"
"net/http"
)
var tpl *template.Template
const (
domain = "localhost"
blogDomain = "blog." + domain
adminDomain = "admin." + domain
designDomain = "design." + domain
)
func init() {
tpl = template.Must(template.ParseGlob("templates/*.gohtml"))
}
func main() {
// Default Handlers
http.HandleFunc("/", index)
// Blog Handlers
http.HandleFunc(blogDomain+"/", blogIndex)
// Admin Handlers
http.HandleFunc(adminDomain+"/", adminIndex)
// Design Handlers
http.HandleFunc(designDomain+"/", designIndex)
http.Handle("/static/", http.StripPrefix("/static", http.FileServer(http.Dir("static"))))
http.ListenAndServe(":8080", nil)
}
func index(res http.ResponseWriter, req *http.Request) {
err := tpl.ExecuteTemplate(res, "index.gohtml", nil)
if err != nil {
log.Fatalln("template didn't execute: ", err)
}
}
// Blog Handlers
func blogIndex(res http.ResponseWriter, req *http.Request) {
err := tpl.ExecuteTemplate(res, "index.gohtml", nil)
if err != nil {
log.Fatalln("template didn't execute: ", err)
}
}
// Admin Handlers
func adminIndex(res http.ResponseWriter, req *http.Request) {
err := tpl.ExecuteTemplate(res, "index.gohtml", nil)
if err != nil {
log.Fatalln("template didn't execute: ", err)
}
}
// Design Handlers
func designIndex(res http.ResponseWriter, req *http.Request) {
err := tpl.ExecuteTemplate(res, "index.gohtml", nil)
if err != nil {
log.Fatalln("template didn't execute: ", err)
}
}
Is it possible to serve subdomains using the standard library? If so how?
EDIT: Requesting localhost:8080/ works fine
EDIT2: I edited /etc/hosts to include the subdomains:
127.0.0.1 blog.localhost.com
127.0.0.1 admin.localhost.com
127.0.0.1 design.localhost.com
Pinging them works correctly but firefox cannot reach them.
答案1
得分: 4
根据你的第二次编辑中的hosts文件，你可以将Firefox指向blog.localhost.com:8080，但你还需要处理该域名模式，即http.HandleFunc(blogDomain+":8080/", blogIndex)。
如果这不是你想要的，你可以监听端口80，即http.ListenAndServe(":80", nil)，你可能需要以sudo方式运行你的应用程序，以便它有权限使用该端口，然后你的blog.localhost.com应该可以正常工作。
英文:
Given the hosts file in your second edit, you can point firefox to, for example, blog.localhost.com:8080 but then you also have to handle that domain pattern, i.e. http.HandleFunc(blogDomain+":8080/", blogIndex).
If that's not what you want you can instead listen on port 80 i.e. http.ListenAndServe(":80", nil), you might need to run your app in sudo so that it has permission to use that port, then your blog.localhost.com should work.
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