opensandbox-group--opensandbox/components/egress/mitmproxy/config.yaml

# Static mitmproxy options that override mitm built-in defaults for the
# OpenSandbox egress sidecar. Loaded automatically by mitmdump from
# /var/lib/mitmproxy/.mitmproxy/config.yaml.
#
# Only deviations from mitm defaults are listed here. Options that
# happen to match the mitm default (http2=true, etc.) are intentionally
# omitted — the file is meant to be the diff against upstream defaults,
# not a full enumeration. Two intentional exceptions to this rule:
# ignore_hosts (kept as a discoverable extension point) and
# connection_strategy (mitmproxy 10+ changed the default from lazy to
# eager; we pin lazy explicitly to preserve the historical behavior).
#
# Per-deployment overrides remain env-driven and applied as --set by
# launch.go. Precedence: command-line --set > this file > mitm defaults.

mode:
  - transparent

# mitm default changed from lazy to eager in mitmproxy 10+. We pin
# lazy explicitly: upstream connections are deferred until the full
# request arrives, avoiding unnecessary upstream opens for blocked
# or filtered requests.
connection_strategy: lazy

# mitm default 0.0.0.0; transparent mode must only accept loopback inside
# the netns (iptables REDIRECT pushes outbound traffic here, and exposing
# mitm on the LAN would route any inbound connection through it).
listen_host: 127.0.0.1

# mitm default None (whole body buffered in memory). 1m bounds RSS for
# the allow path; chunked / SSE responses are forced to stream regardless
# by the system addon's responseheaders hook.
stream_large_bodies: 1m

# mitm default None (Python certifi bundle). Match the OS trust store so
# private-CA additions land where mitm reads them.
ssl_verify_upstream_trusted_confdir: /etc/ssl/certs

# Hosts (Python regex) for TLS pass-through: mitm forwards bytes without
# decryption and addons do not see request/response content. Empty matches
# the mitm default; kept here as a discoverable extension point. Append
# entries here rather than passing --set on the command line, because
# --set on a list option REPLACES the entire list.
ignore_hosts: []