From 50d3b2767f0b856b899b7a5f76a0edf3705d5288 Mon Sep 17 00:00:00 2001
From: Mark Spanbroek <mark@spanbroek.net>
Date: Wed, 19 May 2021 18:04:06 +0200
Subject: [PATCH] Handle Windows ERROR_NETNAME_DELETED in accept()

This error code indicates that server socket is already
closed, so we raise a TransportClosedError.

Fixes CI failure in Windows.
---
 libp2p/transports/tcptransport.nim | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libp2p/transports/tcptransport.nim b/libp2p/transports/tcptransport.nim
index 3a12f7409b..9585133adf 100644
--- a/libp2p/transports/tcptransport.nim
+++ b/libp2p/transports/tcptransport.nim
@@ -9,7 +9,7 @@
 
 {.push raises: [Defect].}
 
-import std/[oids, sequtils]
+import std/[oids, sequtils, os]
 import chronos, chronicles
 import transport,
        ../errors,
@@ -203,8 +203,10 @@ method accept*(self: TcpTransport): Future[Session] {.async.} =
   except TransportOsError as exc:
     # TODO: it doesn't sound like all OS errors
     # can  be ignored, we should re-raise those
-    # that can'self.
+    # that can't.
     debug "OS Error", exc = exc.msg
+    if defined(windows) and exc.code == OSErrorCode(64): # ERROR_NETNAME_DELETED
+      raise newTransportClosedError(exc)
   except TransportTooManyError as exc:
     debug "Too many files opened", exc = exc.msg
   except TransportUseClosedError as exc: