http redirect to https

index.js

      if (app.config.env === 'prod') {
        // SLB 的 https 会添加 请求头部 x-forwarded-proto
        const isHttps = this.ctx.request.headers['x-forwarded-proto'] && (this.ctx.request.headers['x-forwarded-proto'] === 'https');
        if (!isHttps) {
          return this.ctx.redirect(this.ctx.href.replace('http://', 'https://'));
        }
      }