by emilliken:

What steps will reproduce the problem?
I was making many connections via net.DialTimeout and descriptors were not getting
closed immediately after timeout, but rather after the OS-defined connect() timeout was
reached. This was causing my code to run out of descriptors, according to
net.DialTimeout. To demo, run lsof 5 seconds after running this code and see that the
dial descriptor has not been freed.

package main

import (
        "fmt"
        "net"
        "os"
        "time"
)

const ( 
        NORESP = "10.0.0.5:11"
)

func main() {
        fmt.Printf("begin.\n")
        c, err := net.DialTimeout("tcp4", NORESP, 5*time.Second)
        if err != nil {
                fmt.Printf("%v\n", err)
        } else {
                fmt.Printf("did not timeout.\n")
                c.Close()
                os.Exit(1)
        }
        fmt.Printf("selecting.\n")
        select {}
}

What is the expected output?


What do you see instead?


Which compiler are you using (5g, 6g, 8g, gccgo)?
6g

Which operating system are you using?
freebsd amd64

Which revision are you using?  (hg identify)
weekly.2011-12-22

Please provide any additional information below.