From c34e3792a1f27d286cfc2035d5740cc30d13b9f7 Mon Sep 17 00:00:00 2001
From: cy <1040641785@qq.com>
Date: Sat, 18 Jul 2020 14:18:59 +0800
Subject: [PATCH] Implement security handshake for 33 RFB version

reference resources https://datatracker.ietf.org/doc/rfc6143/?include_text=1
A.1.  Differences in the Version 3.3 Protocol
---
 rdpy/protocol/rfb/rfb.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/rdpy/protocol/rfb/rfb.py b/rdpy/protocol/rfb/rfb.py
index b43cfa01..d53663c6 100644
--- a/rdpy/protocol/rfb/rfb.py
+++ b/rdpy/protocol/rfb/rfb.py
@@ -280,8 +280,12 @@ def recvSecurityServer(self, data):
         Server imposed security level
         @param data: well formed packet
         """
-        #TODO!!!
-        pass
+        self._securityLevel = UInt32Be()
+        data.readType(self._securityLevel)
+        if self._securityLevel.value == SecurityType.VNC:
+            self.expect(16, self.recvVNCChallenge)
+        elif self._securityLevel.value == SecurityType.NONE:
+            self.sendClientInit()
         
     def recvSecurityList(self, data):
         """