BHttpRequest: propagate SSL errors to listener

This way it's possible to handle them in applications.

headers/os/net/HttpRequest.h

@@ -8,6 +8,7 @@
 
 #include <deque>
 
+#include <Certificate.h>
 #include <HttpForm.h>
 #include <HttpHeaders.h>
 #include <HttpResult.h>
@@ -74,6 +75,12 @@ private:
 			void				_SetResultStatusCode(int32 statusCode);
 			BString&			_ResultStatusText();
 
+	// SSL failure management
+	friend	class				CheckedSecureSocket;
+			bool				_CertificateVerificationFailed(
+									BCertificate& certificate,
+									const char* message);
+
 	// Utility methods
 			bool				_IsDefaultPort();