closed channel is not also send message to receivers only once but send to channel until release all receivers or program finished.

close_channel_messages.go

package main

import (
	"fmt"
	"time"
)

/*
closed channel is not also send message to receivers only once
but send to channel until release all receivers or program finished.
*/
func main() {
	ch := make(chan struct{})
	go func() {
		for {
			select {
			case _, ok := <-ch:
				if ok {
					fmt.Printf("chan value\n")
				} else {
					fmt.Printf("closed\n")
				}
			}
		}
	}()

	time.Sleep(500 * time.Millisecond)
	close(ch)
	fmt.Println("closed channel")
	time.Sleep(200 * time.Millisecond)
	fmt.Println("end")
}