npm install -g anyproxy

anyproxy

module.exports = {
    // 模块介绍
    summary: 'my customized rule for AnyProxy',
    // 发送请求前拦截处理
    *beforeSendRequest(requestDetail) { /* ... */ },
    // 发送响应前处理
    *beforeSendResponse(requestDetail, responseDetail) { /* ... */ },
    // 是否处理https请求
    *beforeDealHttpsRequest(requestDetail) { /* ... */ },
    // 请求出错的事件
    *onError(requestDetail, error) { /* ... */ },
    // https连接服务器出错
    *onConnectError(requestDetail, error) { /* ... */ }
};

// file: sample.js
module.exports = {
  summary: 'a rule to hack response',
  *beforeSendResponse(requestDetail, responseDetail) {
    if (requestDetail.url === 'http://httpbin.org/user-agent') {
      const newResponse = responseDetail.response;
      newResponse.body += '- AnyProxy Hacked!';
      return { response: newResponse };
    }
  },
};

anyproxy --rule ./sample.js

curl https://github.com --proxy http://127.0.0.1:8001