reading_with_a_nil_byte_slice.go

package main

import (
	"net"
	"os"
)

const sock = "/tmp/test.sock"

func main() {
	os.Remove(sock)
	l, err := net.Listen("unix", sock)
	if err != nil {
		panic(err)
	}

	go func() {
		c, err := net.Dial("unix", sock)
		if err != nil {
			panic(err)
		}
		c.Close()
	}()

	r, err := l.Accept()
	if err != nil {
		panic(err)
	}

	// if you give Read a nil byte slice it will not return an error
	var b []byte

	// if you give Read a non-nil byte slice you get io.EOF
	//b := make([]byte, 1024)

	_, err = r.Read(b)
	if err == nil {
		println("failed")
		return
	}
	println("passed, err was:", err.Error())
}