在节点http-proxy后面航行
我试图把多个帆服务器在同一台服务器上，要做到这一点，我想把一个节点http-proxyredirect到正确的服务器上的每个域是这样的：
var http = require('http'), httpProxy = require('http-proxy'), proxy = httpProxy.createProxyServer({}), url = require('url'); http.createServer(function(req, res) { var hostname = req.headers.host.split(":")[0]; var pathname = url.parse(req.url).pathname; switch(hostname) { case 'example.com': proxy.web(req, res, { target: 'http://localhost:8080' }); break; case 'dev.example.com': proxy.web(req, res, { target: 'http://localhost:8081' }); break; default: proxy.web(req, res, { target: 'http://localhost:80' }); } }).listen(80, function() { console.log('proxy listening on port 80'); }); 但是，在这个新的页面被调用后，我有这个错误和代理崩溃：
/var/www/default/node_modules/http-proxy/lib/http-proxy/index.js:119 throw err; ^ Error: socket hang up at createHangUpError (_http_client.js:215:15) at Socket.socketCloseListener (_http_client.js:247:23) at Socket.emit (events.js:129:20) at TCP.close (net.js:485:12)
我想我错过了一些代码也转发套接字，但我怎么能做到这一点？ 这种代理是否足够强大的生产？
您只处理http请求的代理，您还应该处理socket请求。
这是一个小窍门，你可以在你的应用程序中添加你的逻辑。
proxyServer.on('upgrade', function (req, socket, head) { console.log(req) proxy.ws(req, socket, head); });
最后我用这个： https ： //gist.github.com/jaumard/047f10b7c0563b4bd045
它处理HTTP和套接字，并检查网站是否还活着，如果不是它发送维护页面。
/** * Node.js proxy to redirect domain to correct server * Also check is server is alive or send a maintenance page */ var http = require('http'), httpProxy = require('http-proxy'), proxy = httpProxy.createProxyServer({}), request = require('request'), domains = { "domain1.com" : "localhost:8080", "dev.domain1.com" : "localhost:8081", "domain2.com" : "localhost:8082", "default" : "localhost:8080" }; var maintenance = "<!DOCTYPE html>"+ "<title>Site Maintenance</title>" + "<style>" + " body { text-align: center; padding: 150px; }" + " h1 { font-size: 50px; }" + " body { font: 20px Helvetica, sans-serif; color: #333; }" + " article { display: block; text-align: left; width: 650px; margin: 0 auto; }" + " a { color: #1bbc9b; text-decoration: none; }" + " a:hover { color: #109a7e; text-decoration: none; }" + "</style>" + "<article>" + " <h1>We’ll be back soon!</h1>" + " <div>" + " <p>Sorry for the inconvenience but we’re performing some maintenance at the moment. If you need to you can always <a href=\"mailto:me@me.com\">contact us</a>, otherwise we’ll be back online shortly!</p>" + " <p>— My Team</p>" + " </div>" + "</article>"; //Check is server is alive, if not respond a maintenance page var checkServerAvailability = function (req, res, url) { request(url + '/isAlive', function (error, response, body) { if (!error && response.statusCode == 200) { proxy.web(req, res, {target : url}); } else { res.writeHeader(503, {"Content-Type" : "text/html"}); res.write(maintenance); res.end(); } }); }; var server = http.createServer(function (req, res) { var hostname = ""; //If server call with domaine and not call with IP directly if (req.headers.host) { hostname = req.headers.host.split(":")[0]; } //If it's a know domain, redirect to correct server if (domains[hostname]) { checkServerAvailability(req, res, 'http://' + domains[hostname]); } else { checkServerAvailability(req, res, 'http://' + domains["default"]); } }); // Listen to the `upgrade` event and proxy the // WebSocket requests as well. server.on('upgrade', function (req, socket, head) { var hostname = ""; //If server call with domaine if (req.headers.host) { hostname = req.headers.host.split(":")[0]; } //If it's a know domain, redirect to correct server if (domains[hostname]) { proxy.web(req, socket, {target : 'ws://' + domains[hostname]}); } else { proxy.web(req, socket, {target : 'ws://' + domains["default"]}); } }); //Catch error to prevent proxy crash proxy.on('error', function (err) { console.error(err); }); server.listen(80, function () { console.info('proxy listening on port 80'); });