backup for flow.decode/encode

mitmproxy/addons/core.py

@@ -164,6 +164,7 @@ class Core:
         for f in flows:
             p = getattr(f, part, None)
             if p:
+                f.backup()
                 p.decode()
                 updated.append(f)
         ctx.master.addons.trigger("update", updated)
@@ -205,6 +206,7 @@ class Core:
             if p:
                 current_enc = p.headers.get("content-encoding", "identity")
                 if current_enc == "identity":
+                    f.backup()
                     p.encode(enc)
                     updated.append(f)
         ctx.master.addons.trigger("update", updated)

mitmproxy/tools/console/consoleaddons.py

@@ -379,11 +379,12 @@ class ConsoleAddon:
         # but for now it is.
         if not flow:
             raise exceptions.CommandError("No flow selected.")
+        flow.backup()
+
         require_dummy_response = (
             part in ("response-headers", "response-body", "set-cookies") and
             flow.response is None
         )
-        flow.backup()
         if require_dummy_response:
             flow.response = http.HTTPResponse.make()
         if part == "cookies":