addon.py

import json
import traceback
from mitmproxy import ctx, http


def response(flow: http.HTTPFlow) -> None:
    assert flow.response is not None
    assert flow.response.content is not None
    if (flow.request.method, flow.request.host) != ("POST", "gql-fed.reddit.com"):
        return
    if flow.response.status_code != 200:
        return

    try:
        op = flow.request.json()['operationName']
        data = flow.response.json()
        if op in {"HomeFeedSdui", "SubredditFeedSdui", "PopularFeedSdui", "NewsFeedSdui"}:
            collection_name = {"HomeFeedSdui": "homeV3",
                               "SubredditFeedSdui": "subredditV3",
                               "PopularFeedSdui": "popularV3",
                               "NewsFeedSdui": "newsV3"}[op]
            elements = data['data'][collection_name]['elements']
            elements['edges'] = [
                edge for edge in elements['edges']
                if not any(
                    cell['__typename'] == 'AdMetadataCell'
                    for cell in edge['node'].get('cells', []))]
        elif op == "HomeFeedElements":
            elements = data['data']['home']['elements']
            elements['edges'] = [
                edge for edge in elements['edges']
                if edge['node']['__typename'] != 'AdPost']
        elif op == "PdpCommentsAds":
            data['data']['postInfoById']['pdpCommentsAds']['adPosts'] = []

        flow.response.content = json.dumps(data).encode()
    except Exception as e:
        ctx.log.error(f"Error processing Reddit response: {e}\n{traceback.format_exc()}")

I set it up in mitm docker but could not get it working with following errors, what went wrong here?

[21:05:24.534][192.168.1.108:60853] error establishing server connection: Multiple exceptions: [Errno 111] Connect call failed ('0.0.0.0', 443), [Errno 111] Connect call failed ('::', 443, 0, 0)
[21:05:24.535][192.168.1.108:60854] error establishing server connection: Multiple exceptions: [Errno 111] Connect call failed ('0.0.0.0', 443), [Errno 111] Connect call failed ('::', 443, 0, 0)
[21:05:24.538][192.168.1.108:60853] client disconnect
[21:05:24.539][192.168.1.108:60854] client disconnect
[21:05:27.115][192.168.1.108:60855] client connect
[21:05:27.205][192.168.1.108:60855] server connect gql-fed.reddit.com:443 (199.232.37.140:443)
[21:05:27.246][192.168.1.108:60855] Client TLS handshake failed. The client disconnected during the handshake. If this happens consistently for gql-fed.reddit.com, this may indicate that the client does not trust the proxy's certificate.
[21:05:27.246][192.168.1.108:60855] client disconnect
[21:05:27.247][192.168.1.108:60855] server disconnect gql-fed.reddit.com:443 (199.232.37.140:443)
[21:05:27.259][192.168.1.108:60856] client connect
[21:05:27.261][192.168.1.108:60857] client connect
[21:05:27.266][192.168.1.108:60856] error establishing server connection: Multiple exceptions: [Errno 111] Connect call failed ('0.0.0.0', 443), [Errno 111] Connect call failed ('::', 443, 0, 0)
[21:05:27.268][192.168.1.108:60857] error establishing server connection: Multiple exceptions: [Errno 111] Connect call failed ('0.0.0.0', 443), [Errno 111] Connect call failed ('::', 443, 0, 0)
[21:05:27.270][192.168.1.108:60856] client disconnect
[21:05:27.273][192.168.1.108:60857] client disconnect
[21:05:28.875][192.168.1.108:60858] client connect
[21:05:28.897][192.168.1.108:60858] server connect gql-fed.reddit.com:443 (199.232.89.140:443)