这样写代码是没错的，代理的IP是有效的，支持HTTP，也支持HTTPS

const request = require('request');

let proxyUrl = 'http://119.117.29.15:8943';
request.get({
    url  : 'https://pv.sohu.com/cityjson?ie=utf-8',
    proxy: proxyUrl
}, (err, rep, body) => {
    console.log(err);
    console.log(body);
});

但是如果我将请求的proxy修改成https，就不行了，请问怎么解决

let proxyUrl = 'https://119.117.29.15:8943';

报错如下：

{ Error: tunneling socket could not be established, cause=Client network socket disconnected before secure TLS connection was established
    at ClientRequest.onError (/Library/WebServer/Documents/html/info.zhaoyaojing.client_node/node_modules/_tunnel-agent@0.6.0@tunnel-agent/index.js:177:17)
    at Object.onceWrapper (events.js:273:13)
    at ClientRequest.emit (events.js:182:13)
    at TLSSocket.socketErrorListener (_http_client.js:375:9)
    at TLSSocket.emit (events.js:182:13)
    at emitErrorNT (internal/streams/destroy.js:82:8)
    at emitErrorAndCloseNT (internal/streams/destroy.js:50:3)
    at process._tickCallback (internal/process/next_tick.js:63:19) code: 'ECONNRESET' }