refactor for transport interface changes

Also, refactor out reuseport logic into a separate package.

package.json

@@ -9,15 +9,15 @@
   "gxDependencies": [
     {
       "author": "whyrusleeping",
-      "hash": "QmaBTcaZbAgei1Z2ksUipLJ2AeEZtqDnyGYAkL7NFJ8pg3",
+      "hash": "QmY8DANxsxSQVf9TidKjNDVnnkZcyMJhfjcCcvnJ2jGLzF",
       "name": "go-reuseport",
-      "version": "0.1.10"
+      "version": "0.1.12"
     },
     {
       "author": "whyrusleeping",
-      "hash": "QmRK2LxanhK2gZq6k6R7vk5ZoYZk8ULSSTB7FzDsMUX6CB",
+      "hash": "QmcGXGdw9BWDysPJQHxJinjGHha3eEg4vzFETre4woNwcX",
       "name": "go-multiaddr-net",
-      "version": "1.5.7"
+      "version": "1.6.0"
     },
     {
       "author": "whyrusleeping",
@@ -27,9 +27,9 @@
     },
     {
       "author": "whyrusleeping",
-      "hash": "QmVxtCwKFMmwcjhQXsGj6m4JAW7nGb9hRoErH9jpgqcLxA",
+      "hash": "QmSEPMduJjt75DTfadn7D4jRAB91Y55kErcsYnbF6nc9rZ",
       "name": "go-libp2p-transport",
-      "version": "2.2.13"
+      "version": "3.0.0"
     },
     {
       "hash": "QmRb5jh8z2E8hMGN2tkvs1yHynUanqnZ3UeKwgN1i9P1F8",
@@ -41,6 +41,36 @@
       "hash": "QmWWQ2Txc2c6tqjsBpzg5Ar652cHPGNsQQp2SejkNmkUMb",
       "name": "go-multiaddr",
       "version": "1.2.6"
+    },
+    {
+      "author": "whyrusleeping",
+      "hash": "Qmc14vuKyGqX27RvBhekYytxSFJpaEgQVuVJgKSm69MEix",
+      "name": "go-smux-multiplex",
+      "version": "3.0.5"
+    },
+    {
+      "author": "stebalien",
+      "hash": "QmW9X4sZ9svTsTHesgxGdS6soi5miSofH7PyH8AXF86ZAS",
+      "name": "go-reuseport-transport",
+      "version": "0.1.3"
+    },
+    {
+      "author": "steb",
+      "hash": "QmZPd1MNxvCgtHumkkuqkAPHaV6HEGuWwKKsAYLfDf4asZ",
+      "name": "go-libp2p-transport-upgrader",
+      "version": "0.1.1"
+    },
+    {
+      "author": "Stebalien",
+      "hash": "QmequdAMEeFJ5fBtfkwKChW8zt86wcmAu1JYfXN6wn9YGT",
+      "name": "go-conn-security",
+      "version": "0.1.0"
+    },
+    {
+      "author": "whyrusleeping",
+      "hash": "QmZoWKhxUmZ2seW4BzX6fJkNR8hh9PsGModr7q171yq2SS",
+      "name": "go-libp2p-peer",
+      "version": "2.2.3"
     }
   ],
   "gxVersion": "0.4.0",

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.
-	}
-}