Changing agent proxy on working proxy server

[d0c3ntOS]

I have couple of proxy around the world. I want change proxy when I know URL of request.

I use "https-proxy-agent" - https://www.npmjs.com/package/https-proxy-agent

I try change proxy.httpsAgent, closed server (proxy.close()) and strart again (proxy.listen({....})) my proxy server but this method don't work.

---

proxy.onRequest(function(ctx, callback) {
    ctx.use(Proxy.gunzip);

    console.log("--URL:",ctx.clientToProxyRequest.url);
    dbLib.getProxy(ctx.clientToProxyRequest.url, function() {
        if (global.proxy.length > 5){
            proxy.close();
            myproxy = process.env.http_proxy || 'http://'+global.proxy+':3128';
            myAgent = new HttpsProxyAgent(myproxy);
            proxy.httpsAgent = myAgent;
            proxy.httpAgent = myAgent;
            proxy.listen({port: 8800,  forceSNI: true});
            proxy.httpsAgent = myAgent;
            proxy.httpAgent = myAgent;
        }
    });

[felicienfrancois]

You can set the http agent on the fly using

proxy.onRequest(function(ctx, callback) {
  ctx.proxyToServerRequestOptions.agent = myAgent;
  callback();
});
// and for websockets
proxy.onWebSocketConnection(function(ctx, callback) {
  ctx.proxyToServerWebSocketOptions.agent = myAgent;
  callback();
});

[d0c3ntOS]

Thank you for your quick answer, but it did not help :(

when I reload the page everything is ok ...
... but I want to change gateway of connection before I make the first connection ...

[d0c3ntOS]

I think library establish connection before I change Agent, and use them. I don't now how to kill all old connections (old = connections makes before I change Agent) , established new and use it on existing context

[felicienfrancois]

Don't close and relaunch the proxy at each request, it cannot work.

Do something like that:

proxy.onRequest(function(ctx, callback) {
    ctx.use(Proxy.gunzip);
    console.log("--URL:",ctx.clientToProxyRequest.url);
    dbLib.getProxy(ctx.clientToProxyRequest.url, function() {
        if (global.proxy.length > 5){
            proxy.close();
            myproxy = process.env.http_proxy || 'http://'+global.proxy+':3128';
            myAgent = new HttpsProxyAgent(myproxy);
            ctx.proxyToServerRequestOptions.agent = myAgent;
        }
        callback(); // call the onRequest callback after changing agent
   });
});
proxy.listen({port: 8800,  forceSNI: true}); // listen outside the onRequest event

[d0c3ntOS]

Everything works ok. Thank you very much. I had problem with sync in javascript.