Listen on TCP4 not TCP6

问题:

I am using https://github.com/gin-gonic/gin to write an http service But when I deploy it, it keeps deploying on tcp6(according to netstat)

r := gin.Default()
//none of these are working , It keeps being listed on tcp6
r.Run(":8080")
r.Run("*:8080")
r.Run("0.0.0.0:8080")

回答1:

The documentation states

Run attaches the router to a http.Server and starts listening and serving HTTP requests. It is a shortcut for http.ListenAndServe(addr, router)

You can start the server directly using an http.Server the same way the http package does in ListenAndServe

server := &http.Server{Handler: r}
l, err := net.Listen("tcp4", addr)
if err != nil {
    log.Fatal(err)
}
err = server.Serve(l)
// ...