From 3c7b7f217647a26756bc329a141011beb8cc4a7c Mon Sep 17 00:00:00 2001
From: despair86 <despair@rvx86.net>
Date: Fri, 5 Oct 2018 02:52:45 -0500
Subject: [PATCH] overlapped io pending is NOT an error

---
 llarp/ev_win32.hpp                       |  6 ++++--
 vendor/libtuntap-master/tuntap-windows.c | 22 ++++++++++++++++------
 2 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/llarp/ev_win32.hpp b/llarp/ev_win32.hpp
index 313bb8df3..08a1018b5 100644
--- a/llarp/ev_win32.hpp
+++ b/llarp/ev_win32.hpp
@@ -366,13 +366,15 @@ struct llarp_win32_loop : public llarp_ev_loop
   add_ev(llarp::ev_io* ev, bool write)
   {
   	uint8_t buf[1024];
+  	llarp::udp_listener *udp = nullptr;
+  	llarp::tun *t = nullptr;
     ev->listener_id = reinterpret_cast< ULONG_PTR >(ev);
     memset(&buf, 0, 1024);
 
     switch(ev->fd.index())
     {
       case 0:
-      	llarp::udp_listener* udp = dynamic_cast<llarp::udp_listener*>(ev);
+      	udp = dynamic_cast<llarp::udp_listener*>(ev);
         if(!::CreateIoCompletionPort((HANDLE)std::get< 0 >(ev->fd), iocpfd,
                                      ev->listener_id, 0))
         {
@@ -382,7 +384,7 @@ struct llarp_win32_loop : public llarp_ev_loop
         ::ReadFile((HANDLE)std::get<0>(ev->fd), &buf, 1024, nullptr, &udp->portfd);
         break;
       case 1:
-		llarp::tun* t = dynamic_cast<llarp::tun*>(ev);
+		t = dynamic_cast<llarp::tun*>(ev);
         if(!::CreateIoCompletionPort(std::get< 1 >(ev->fd), iocpfd,
                                      ev->listener_id, 0))
         {
diff --git a/vendor/libtuntap-master/tuntap-windows.c b/vendor/libtuntap-master/tuntap-windows.c
index e58eccdab..83b7e880a 100644
--- a/vendor/libtuntap-master/tuntap-windows.c
+++ b/vendor/libtuntap-master/tuntap-windows.c
@@ -398,8 +398,13 @@ tuntap_read(struct device *dev, void *buf, size_t size)
   {
     int errcode = GetLastError();
 
-    tuntap_log(TUNTAP_LOG_ERR, (const char *)formated_error(L"%1%0", errcode));
-    return -1;
+    if (errcode != 997)
+	{
+		tuntap_log(TUNTAP_LOG_ERR, (const char *)formated_error(L"%1%0", errcode));
+		return -1;
+	}
+	else
+		return 0;
   }
 
   return 0;
@@ -412,10 +417,15 @@ tuntap_write(struct device *dev, void *buf, size_t size)
 
   if(WriteFile(dev->tun_fd, buf, (DWORD)size, &len, &dev->ovl) == 0)
   {
-    int errcode = GetLastError();
-
-    tuntap_log(TUNTAP_LOG_ERR, (const char *)formated_error(L"%1%0", errcode));
-    return -1;
+  	int errcode = GetLastError();
+
+    if (errcode != 997)
+	{
+		tuntap_log(TUNTAP_LOG_ERR, (const char *)formated_error(L"%1%0", errcode));
+		return -1;
+	}
+	else
+		return 0;
   }
 
   return 0;