Merge pull request #23 from libp2p/feat/refactor

refactor for transport interface changes

p2p/transport/tcp/reuseport.go

@@ -1,10 +1,8 @@
 package tcp
 
 import (
-	"net"
 	"os"
 	"strings"
-	"syscall"
 
 	reuseport "github.com/libp2p/go-reuseport"
 )
@@ -35,31 +33,3 @@ func init() {
 func ReuseportIsAvailable() bool {
 	return envReuseportVal && reuseport.Available()
 }
-
-// ReuseErrShouldRetry diagnoses whether to retry after a reuse error.
-// if we failed to bind, we should retry. if bind worked and this is a
-// real dial error (remote end didnt answer) then we should not retry.
-func ReuseErrShouldRetry(err error) bool {
-	if err == nil {
-		return false // hey, it worked! no need to retry.
-	}
-
-	// if it's a network timeout error, it's a legitimate failure.
-	if nerr, ok := err.(net.Error); ok && nerr.Timeout() {
-		return false
-	}
-
-	errno, ok := err.(syscall.Errno)
-	if !ok { // not an errno? who knows what this is. retry.
-		return true
-	}
-
-	switch errno {
-	case syscall.EADDRINUSE, syscall.EADDRNOTAVAIL:
-		return true // failure to bind. retry.
-	case syscall.ECONNREFUSED:
-		return false // real dial error
-	default:
-		return true // optimistically default to retry.
-	}
-}