我正在編寫node.js應用程序的任務管理器。這些應用程序在任意端口開啓,所以,爲了達到這些目標我想僞造他們的根在 這樣的URL:Socket.io在代理服務器收到握手響應之前關閉[ECONNRESET]
http://domain.com/proxy/yourApplication
那麼第三方可以使HTTP請求發送到他們的應用,但不知道在哪個端口運行。
然後我選擇http-proxy:
var express = require('express')
, router = express.Router()
, Helper = require('../helper')
, launcher = require('../launcher')
, httpProxy = require('http-proxy')
, proxy = httpProxy.createProxyServer({ws: true});
並偵聽在這條路線的代碼...
// Proxy
router.use('/proxy/:name?', function(req, res) {
var app, reqPath, referer, proxyUrl;
// Capture the referer to proxy the request
// in case the path is not clear enaugh
if (req.get('referer') !== undefined) {
var aux = req.get('referer').split('/');
referer = aux[aux.indexOf('proxy') + 1]
}
// This block returns an app object
// with the port where it is running
app = launcher.getApp(req.params.name)
|| launcher.getApp(referer);
if (app) {
// Here app is running
// In case the path is /proxy/:name
// instead of /proxy/:name/ you need this block
req.url = (req.url === '/') ? '' : req.url;
reqPath = (referer !== undefined)
? '/' + req.params.name + req.url
: req.url;
req.url = reqPath.replace('/proxy/', '/');
req.url = req.url.replace('/' + app.name, '');
// This block of code actually pipes the request
// to the running app and pass it to the client
proxyUrl = req.protocol + '://localhost:' + app.port;
proxy.web(req, res, {
target: proxyUrl
});
// Some logging
console.log('req url: %s', req.url);
console.log('proxy url: %s', proxyUrl);
console.log('referer: %s', referer);
} else {
// Here app is not running
res.status(404).json("App not running");
}
});
它的工作原理只是大多數應用程序很好,但與插座打開應用時。它提示:
WebSocket connection to 'ws://localhost/proxy/xy-terminal/socket.io/1/websocket/gMqK_XRwZENuUibi4ekJ' failed: Connection closed before receiving a handshake response
在服務器控制檯...
Trace: { [Error: socket hang up] code: 'ECONNRESET' }
at process.<anonymous> (/Users/jdario/Development/xy-dashboard/www:107:11)
at process.emit (events.js:107:17)
at process._fatalException (node.js:236:26)
at ProxyServer.emit (/Users/jdario/Development/xy-dashboard/node_modules/http-proxy/node_modules/eventemitter3/index.js:75:35)
at ClientRequest.proxyError (/Users/jdario/Development/xy-dashboard/node_modules/http-proxy/lib/http-proxy/passes/web-incoming.js:140:16)
at ClientRequest.emit (events.js:129:20)
at Socket.socketCloseListener (_http_client.js:247:9)
at Socket.emit (events.js:129:20)
at TCP.close (net.js:485:12)
由於它是僞造應用程序根目錄的「代理」,我可能無法單獨修改它們的源代碼,它們應該按預期工作。在正確的端口打開它們(在這種情況下爲3000)時,它們不會顯示任何錯誤。
預先感謝您!
你知道一個webSocket連接是作爲一個http請求啓動的嗎?然後它被升級到webSocket協議?因此,您的代理需要處理該問題,並需要一種方法來告知哪個應用是webSocket連接的目的地。 – jfriend00
是的!其實我相信這個錯誤可能在那裏,但經過檢查http-proxy的源代碼後,我找不到。另外,我必須指出,第一次完成後的其他連接試驗。第一個是在'/ proxy/appName /'和'完成'到達'/ proxy/appName'時的'pending'。 – jsdario