go - How to use next available port in http.ListenAndServe

Question

I wrote a simple web server to listen on port 8080. But I don't want to use a hard coded port number. What I want is that my server listen on any available port. And I want to know that on what port number my web server is listening.

My code is given bellow:

package main

import (
    "net/http"
)

func main() {       
    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)

}

question from:https://stackoverflow.com/questions/43424787/how-to-use-next-available-port-in-http-listenandserve

Answer 1

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