使用EBS& ELB环境 [英] Forwarding http to https in node.js express app using EBS & ELB environment

问题描述

我正在使用以下方式将所有http请求重定向到https请求。

I am using the following to redirect all http requests to https requests.

我可以从日志中看到头文件x -forward-proto从来没有被填充并且未定义。

I can see from logs that the header 'x-forwarded-proto' is never populated and is undefined.

app.get('*', function(req, res, next) {
    //http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/TerminologyandKeyConcepts.html#x-forwarded-proto
    if (req.headers['x-forwarded-proto'] != "https") {
        res.redirect('https://' + req.get('host') + req.url);
    } else {
        next();     
    }
});

它导致重定向循环。如何在没有循环的情况下正确地重定向？

It is causing a redirect loop. How can I redirect properly without looping?

推荐答案

编辑：
我的原始答案如下： express 3.x 4.x您可以在 http 或 https /api.html#req.protocolrel =noreferrer> req.protocol ，thx @BrandonClark

edit: my original answer below is for express 3.x, for 4.x you can get a string http or https in req.protocol, thx @BrandonClark

使用 req.get ，而不是 req.headers 。请注意，POST请求和所有其他非GET将不会看到此中间件。
还有可能，Express在重定向时不会携带 x-forwarding-proto 头。您可能需要自己设置。

use req.get, not req.headers. Note that POST requests and all other non-GET will not see this middleware. It's also possible that Express does not carry the x-forwarded-proto header across when you redirect. You may need to set it yourself.

app.get('*', function(req, res, next) {
//http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/TerminologyandKeyConcepts.html#x-forwarded-proto
    if (req.get('x-forwarded-proto') != "https") {
        res.set('x-forwarded-proto', 'https');
        res.redirect('https://' + req.get('host') + req.url);
    } else {
        next();     
    }
});

另一种强制https：

Another way to force https:

function ensureSecure(req, res, next){
  if(req.secure){
    // OK, continue
    return next();
  };
  res.redirect('https://'+req.host+req.url); // handle port numbers if non 443
};

app.all('*', ensureSecure);

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