1 files changed, 32 insertions, 0 deletions
diff --git a/libmproxy/protocol2/root_context.py b/libmproxy/protocol2/root_context.py
new file mode 100644
index 00000000..cbe596aa
--- /dev/null
+++ b/libmproxy/protocol2/root_context.py
@@ -0,0 +1,32 @@
+from .rawtcp import TcpLayer
+from .tls import TlsLayer
+
+
+class RootContext(object):
+    """
+    The outmost context provided to the root layer.
+    As a consequence, every layer has .client_conn, .channel, .next_layer() and .config.
+    """
+
+    def __init__(self, client_conn, config, channel):
+        self.client_conn = client_conn  # Client Connection
+        self.channel = channel  # provides .ask() method to communicate with FlowMaster
+        self.config = config  # Proxy Configuration
+
+    def next_layer(self, top_layer):
+        """
+        This function determines the next layer in the protocol stack.
+        :param top_layer: the current top layer
+        :return: The next layer.
+        """
+
+        d = top_layer.client_conn.rfile.peek(1)
+
+        if not d:
+            return
+        # TLS ClientHello magic, see http://www.moserware.com/2009/06/first-few-milliseconds-of-https.html#client-hello
+        if d[0] == "\x16":
+            layer = TlsLayer(top_layer, True, True)
+        else:
+            layer = TcpLayer(top_layer)
+        return layer