time: the time.After channel does not close when reusing it

[blackbeans]

i want use the same channel of time.After for waiting some response timeout.
but when i reuse the channel to read ,it blocks the current goroutine.

Now ,i use another way to solve the problem.

latch := make(chan time.Time, 1)
t := time.AfterFunc(timeout, func() {
    close(latch)
})

defer t.Stop()
tch := (<-chan time.Time)(latch)

//wating for response
for g, f := range self.futures {
    resp, err := f.Get(tch)
    }

[ianlancetaylor]

I'm sorry, I don't understand. Can you provide a complete self-contained example that shows the bug?

[blackbeans]

code like this:

package main
import "time"
import "fmt"

func main() {
ch := time.After(10 * time.Second)
<-ch
fmt.Println("timeout")
<-ch
fmt.Println("unreachable")
}

"ch" should be close when timeout has been happen .

[adg]

That's not how the time.After function works. It doesn't close the channel. The docs say:

After waits for the duration to elapse and then sends the current time on the returned channel. 

and that's what it does.