support attributes in session.Content

common/session/session.go

@@ -66,4 +66,20 @@ type Content struct {
 	Protocol string
 
 	SniffingRequest SniffingRequest
+
+	attr map[string]interface{}
+}
+
+func (c *Content) SetAttribute(name string, value interface{}) {
+	if c.attr == nil {
+		c.attr = make(map[string]interface{})
+	}
+	c.attr[name] = value
+}
+
+func (c *Content) Attribute(name string) interface{} {
+	if c.attr == nil {
+		return nil
+	}
+	return c.attr[name]
 }

proxy/http/server.go

@@ -239,9 +239,18 @@ func (s *Server) handlePlainHTTP(ctx context.Context, request *http.Request, wri
 		request.Header.Set("User-Agent", "")
 	}
 
-	ctx = session.ContextWithContent(ctx, &session.Content{
+	content := &session.Content{
 		Protocol: "http/1.1",
-	})
+	}
+
+	content.SetAttribute(":method", request.Method)
+	content.SetAttribute(":path", request.URL.Path)
+	for key := range request.Header {
+		value := request.Header.Get(key)
+		content.SetAttribute(strings.ToLower(key), value)
+	}
+
+	ctx = session.ContextWithContent(ctx, content)
 
 	link, err := dispatcher.Dispatch(ctx, dest)
 	if err != nil {