https如何设置ca证书和客户端证书

requestHttp(url: string): Promise<string> { 
  return new Promise((resolve, reject) => { 
  let httpRequest = http.createHttp(); 
  httpRequest.request( 
  url, 
  { 
  method: http.RequestMethod.GET, 
 
  connectTimeout: 10000, 
  readTimeout: 10000, 
 
  caPath:'服务端使用证书路径', 
 
}, (err: BusinessError, data) => { 
  console.info('1---- url:' + JSON.stringify(url)); 
  if (!err) { 
    // data.result为HTTP响应内容 
    console.info('1---- arrResult:' + JSON.stringify(data.result)); 
    console.info('1---- header:' + JSON.stringify(data.header)); 
    console.info('1---- cookies:' + JSON.stringify(data.cookies)); 
    console.info('1---- code:' + JSON.stringify(data.responseCode)); 
 
    httpRequest.destroy(); 
  } else { 
    console.info('1---- error:' + JSON.stringify(err)); 
    console.info("1 ---------------------------------------------") 
    httpRequest.destroy(); 
  } 
}) 
}); 
}
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