Apply winsock header hack/fix

1 files changed, 13 insertions, 0 deletions

diff --git a/OpenSSL/crypto/crypto.h b/OpenSSL/crypto/crypto.h
index 8c803a8..adb6509 100644
--- a/OpenSSL/crypto/crypto.h
+++ b/OpenSSL/crypto/crypto.h
@@ -14,6 +14,19 @@
 #define PyOpenSSL_CRYPTO_H_
 
 #include <Python.h>
+/* Work around a bug in OpenSSL 1.0.0 which is caused by winsock.h being
+   included (from dtls1.h) too late by the OpenSSL header files, overriding
+   the fixes (in ossl_typ.h) for symbol clashes caused by this OS header
+   file.
+   
+   In order to have those fixes still take effect, we include winsock.h
+   here, prior to including any OpenSSL header files.
+   
+ */
+#ifdef _WIN32
+# include "winsock.h"
+#endif
+
 #include "x509.h"
 #include "x509name.h"
 #include "netscape_spki.h"