43 lines
1.4 KiB
JavaScript
43 lines
1.4 KiB
JavaScript
|
import { Debug } from '../../debug.js';
|
||
|
|
import { getFunctionName } from '../../utils/function.js';
|
||
|
|
import { definePlugin } from '../define-plugin.js';
|
||
|
|
const debug = Debug.extend('proxy-events-plugin');
|
||
|
|
/**
|
||
|
|
* Implements option.on object to subscribe to `httpxy` events.
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* ```js
|
||
|
|
* createProxyMiddleware({
|
||
|
|
* on: {
|
||
|
|
* error: (error, req, res, target) => {},
|
||
|
|
* proxyReq: (proxyReq, req, res, options) => {},
|
||
|
|
* proxyReqWs: (proxyReq, req, socket, options) => {},
|
||
|
|
* proxyRes: (proxyRes, req, res) => {},
|
||
|
|
* open: (proxySocket) => {},
|
||
|
|
* close: (proxyRes, proxySocket, proxyHead) => {},
|
||
|
|
* start: (req, res, target) => {},
|
||
|
|
* end: (req, res, proxyRes) => {},
|
||
|
|
* econnreset: (error, req, res, target) => {},
|
||
|
|
* }
|
||
|
|
* });
|
||
|
|
* ```
|
||
|
|
*/
|
||
|
|
export const proxyEventsPlugin = definePlugin((proxyServer, options) => {
|
||
|
|
if (!options.on) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
// hoist variable here for better typing
|
||
|
|
let eventName;
|
||
|
|
// for in provide better typing than Object.entries()
|
||
|
|
for (eventName in options.on) {
|
||
|
|
if (Object.prototype.hasOwnProperty.call(options.on, eventName)) {
|
||
|
|
const handler = options.on[eventName];
|
||
|
|
if (!handler) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
debug(`register event handler: "${eventName}" -> "${getFunctionName(handler)}"`);
|
||
|
|
proxyServer.on(eventName, handler);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|