smartproxy/ts/smartproxy.classes.proxyworker.ts
2019-09-20 19:19:33 +02:00

204 lines
8.5 KiB
TypeScript

import { expose } from '@pushrocks/smartspawn';
import * as plugins from './smartproxy.plugins';
import { SmartproxyRouter } from './smartproxy.classes.router';
export class ProxyWorker {
public hostCandidates: plugins.tsclass.network.IReverseProxyConfig[] = [];
public httpsServer: plugins.https.Server; // | plugins.http.Server;
public port = 8001;
public router = new SmartproxyRouter();
/**
* starts the proxyInstance
*/
public async start() {
this.httpsServer = plugins.https.createServer({
key: `-----BEGIN PRIVATE KEY-----
MIIJRQIBADANBgkqhkiG9w0BAQEFAASCCS8wggkrAgEAAoICAQDi2F/0kQr96mhe
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-----END PRIVATE KEY-----
`,
cert: `-----BEGIN CERTIFICATE-----
MIIEljCCAn4CCQDY+ZbC9FASVjANBgkqhkiG9w0BAQsFADANMQswCQYDVQQGEwJE
RTAeFw0xOTA5MjAxNjAxNDRaFw0yMDA5MTkxNjAxNDRaMA0xCzAJBgNVBAYTAkRF
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-----END CERTIFICATE-----
`
}, async (req, res) => {
console.log('got request');
const destinationConfig = this.router.routeReq(req);
let destinationUrl: string;
if (destinationConfig) {
destinationUrl = `http://${destinationConfig.destinationIp}:${destinationConfig.destinationPort}${req.url}`;
} else {
res.writeHead(404);
res.end('This route is not available on this server\n');
return;
}
console.log(destinationUrl);
const response = await plugins.smartrequest.request(
destinationUrl,
{
method: req.method,
headers: req.headers
},
true // lets make this streaming
);
res.statusCode = response.statusCode;
for (const header of Object.keys(response.headers)) {
res.setHeader(header, response.headers[header]);
}
response.on('data', data => {
res.write(data);
});
response.on('end', () => {
res.end();
});
});
const Websocket = await import('ws');
// Enable websockets
const wss = new plugins.ws.Server({ server: this.httpsServer });
wss.on('connection', function connection(ws) {
console.log('got connection for wsc');
const wscConnected = plugins.smartpromise.defer();
const wsc = new Websocket.default(`${ws.url}`);
wsc.on('open', () => {
wscConnected.resolve();
});
ws.on('message', async message => {
await wscConnected.promise;
wsc.emit('message', message);
});
wsc.on('message', message => {
ws.emit('message', message);
});
// handle closing
ws.on('close', message => {
wsc.close();
});
wsc.on('close', message => {
ws.close();
});
});
this.httpsServer.listen(this.port);
console.log(`OK: now listening for new connections on port ${this.port}`);
}
public async updateCandidates(arrayOfReverseCandidates: plugins.tsclass.IReverseProxyConfig[]) {
this.hostCandidates = arrayOfReverseCandidates;
this.router.setNewCandidates(arrayOfReverseCandidates);
for (const hostCandidate of this.hostCandidates) {
// console.log(hostCandidate);
this.httpsServer.addContext(hostCandidate.hostName, {
cert: hostCandidate.publicKey,
key: hostCandidate.privateKey,
});
}
/* this.httpsServer.close();
this.httpsServer.listen(this.port); */
}
public async stop() {
const done = plugins.smartpromise.defer();
this.httpsServer.close(() => {
done.resolve();
});
await done.promise;
}
}
const proxyWorkerInstance = new ProxyWorker();
// the following is interesting for the master process only
const proxyWorkerCalls = {
stop: async () => {
await proxyWorkerInstance.stop();
},
start: async () => {
await proxyWorkerInstance.start();
},
updateReverseConfigs: async (configArray: plugins.tsclass.network.IReverseProxyConfig[]) => {
await proxyWorkerInstance.updateCandidates(configArray);
}
};
export type TProxyWorkerCalls = typeof proxyWorkerCalls;
expose(proxyWorkerCalls);
console.log('ProxyWorker initialized');