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-rw-r--r--src/transports/winhttp.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/transports/winhttp.c b/src/transports/winhttp.c
index 46a8fcddc..1e83a3f26 100644
--- a/src/transports/winhttp.c
+++ b/src/transports/winhttp.c
@@ -55,6 +55,11 @@ static const int no_check_cert_flags = SECURITY_FLAG_IGNORE_CERT_CN_INVALID |
SECURITY_FLAG_IGNORE_CERT_DATE_INVALID |
SECURITY_FLAG_IGNORE_UNKNOWN_CA;
+#if defined(__MINGW64_VERSION_MAJOR)
+# define WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_1 0x00000200
+# define WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_2 0x00000800
+#endif
+
#if defined(__MINGW32__)
static const CLSID CLSID_InternetSecurityManager_mingw =
{ 0x7B8A2D94, 0x0AC9, 0x11D1,