blocks|key|2159956|text|req参数是IncomingMessage的一个实例，您可以从它访问插座。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2159957|从那里您可以访问localPort和remotePort。|2159958|类似于：|2159959|console.log(req.socket.localPort);
console.log(req.socket.remotePort);|code-block|syntax|javascript|2159960|entityMap|0|LINK|mutability|MUTABLE|url|http://nodejs.org/api/all.html#all_http_incomingmessage|1|http://nodejs.org/api/all.html#all_message_socket^0|0|3|6|F|0|Y|2|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]|$9|14|A|15|1|16]]|E|$]]|$1|F|3|G|5|6|7|17|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|18|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|19|8|@]|D|@]|E|$M|N]]|$1|O|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]|W|$5|R|S|T|E|$U|X]]]]

The <code>req</code> parameter is an instance of <a href="http://nodejs.org/api/all.html#all_http_incomingmessage" rel="noreferrer">IncomingMessage</a> from which you can access the <a href="http://nodejs.org/api/all.html#all_message_socket" rel="noreferrer">socket</a>.

From there you can access both the localPort and remotePort.

Something like:

<pre><code>console.log(req.socket.localPort);
console.log(req.socket.remotePort);
</code></pre>

blocks|key|1442438|text|与检查端口号不同，您还可以检查服务器实例或连接对象：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1442439|var+http+=+require('http'),
++++https+=+require('https');
function+processRequest(req,+res)+{
++var+isSSL+=+(req.socket.encrypted+?+true+:+false);
++//+alternate+method:
++//+var+isSSL+=+(this+instanceof+https.Server);
++//+or+if+you+want+to+check+against+a+specific+server+instance:
++//+var+isServer1+=+(this+===+server1);

++res.writeHead(200);
++res.end('hello+world,+i+am'+%2B+(!isSSL+?+'+not'+:+'')+%2B+'+encrypted!\n');
}
var+server1+=+http.createServer(processRequest).listen(80);
var+server2+=+https.createServer(processRequest).listen(443);|code-block|syntax|javascript|1442440|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Instead of checking port numbers, you can also check the server instance or the connection object:

<pre><code>var http = require('http'),
 https = require('https');
function processRequest(req, res) {
 var isSSL = (req.socket.encrypted ? true : false);
 // alternate method:
 // var isSSL = (this instanceof https.Server);
 // or if you want to check against a specific server instance:
 // var isServer1 = (this === server1);

 res.writeHead(200);
 res.end('hello world, i am' + (!isSSL ? ' not' : '') + ' encrypted!\n');
}
var server1 = http.createServer(processRequest).listen(80);
var server2 = https.createServer(processRequest).listen(443);
</code></pre>

blocks|key|2437684|text|这样您就可以得到端口号：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2437685|var+http+=+require('http');
var+server+=+http.createServer().listen(8080);

server.on('request',+function(req,+res){
++++res.writeHead(200,+{"Content-Type":+"text/html;+charset:+UTF-8"});
++++res.write("Hello+from+Node!+");
++++res.write("+Server+listening+on+port+"+%2B+this.address().port);
++++res.end();
});|code-block|syntax|javascript|2437686|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This way you get the port number: 

<pre><code>var http = require('http');
var server = http.createServer().listen(8080);

server.on('request', function(req, res){
 res.writeHead(200, {"Content-Type": "text/html; charset: UTF-8"});
 res.write("Hello from Node! ");
 res.write(" Server listening on port " + this.address().port);
 res.end();
});
</code></pre>

blocks|key|2437704|text|如果您使用的是http://localhost:<port_number>，，那么您可以使用req.headers.host属性获得端口号。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|2437705|示例：|2437706|const+http+=+require('http');
const+server+=+http.createServer((req,+res)=>{
++++console.log(req.headers.host);+//+localhost:8080
++++console.log(req.headers.host.split(':')[1]);+//+8080
})
server.listen(8080);|code-block|syntax|javascript|2437707|entityMap^0|7|U|1A|G|7|U|1A|G|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]|$9|S|A|T|B|C]|$9|U|A|V|B|D]|$9|W|A|X|B|D]]|E|@]|F|$]]|$1|G|3|H|5|6|7|Y|8|@]|E|@]|F|$]]|$1|I|3|J|5|K|7|Z|8|@]|E|@]|F|$L|M]]|$1|N|3|-4|5|6|7|10|8|@]|E|@]|F|$]]]|O|$]]

In case you are using <code>http://localhost:&lt;port_number&gt;</code>, then you can get the port number using <code>req.headers.host</code> property.
Example:
<pre><code>const http = require('http');
const server = http.createServer((req, res)=&gt;{
 console.log(req.headers.host); // localhost:8080
 console.log(req.headers.host.split(':')[1]); // 8080
})
server.listen(8080);
</code></pre>

If I have two node.js servers running, how can I tell which server called the processRequest function?

<pre><code>var http = require('http');
var https = require('https');
function processRequest(req, res) {
 res.writeHead(200);
 res.end("hello world, I'm on port: " + ???.port + "\n");
}
var server1 = http.createServer(processRequest).listen(80);
var server2 = https.createServer(processRequest).listen(443);
</code></pre>

Originally I wanted the port number, but couldn't find the object/variable to give it to me. Based on the below answer it makes more sense to determine encrypted vs non-encrypted since the point is to know which of the http servers the request came in on.

How to get the port number in node.js when a request is processed?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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如果我有两个node.js服务器正在运行，我如何才能知道哪个服务器称为processRequest函数？var http = require('http');var https = require('https');function processRequest(req, res) {    res.writeHead...

问如何在处理请求时在node.js中获取端口号？
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问如何在处理请求时在node.js中获取端口号？EN