invitation.c: fix socket error checking on Windows

[tinc] / src / utils.h

diff --git a/src/utils.h b/src/utils.h
index 4285150..25e8cc9 100644 (file)
--- a/src/utils.h
+++ b/src/utils.h
@@ -38,6 +38,7 @@ extern const char *winerror(int);
 #define sockinprogress(x) ((x) == WSAEINPROGRESS || (x) == WSAEWOULDBLOCK)
 #define sockinuse(x) ((x) == WSAEADDRINUSE)
 #define socknotconn(x) ((x) == WSAENOTCONN)
+#define sockshutdown(x) ((x) == WSAESHUTDOWN)
 #else
 #define sockerrno errno
 #define sockstrerror(x) strerror(x)