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func ListenAndServe(addr string, handler Handler) error

Defined in


ListenAndServe listens on the TCP network address addr and then calls Serve with handler to handle requests on incoming connections. Accepted connections are configured to enable TCP keep-alives. Handler is typically nil, in which case the DefaultServeMux is used.

A trivial example server is:

package main

import (

// hello world, the web server
func HelloServer(w http.ResponseWriter, req *http.Request) {
	io.WriteString(w, "hello, world!\n")

func main() {
	http.HandleFunc("/hello", HelloServer)
	log.Fatal(http.ListenAndServe(":12345", nil))

ListenAndServe always returns a non-nil error.