Cannot change path in target site?

[yleemj]

If the income request url is http://example.com/abc, and then we call

proxy.web(req, res, {target: "http://target.com:8080"})

the request will be proxied to http://target.com:8080/abc, can it be proxied to a different path, e..g http://target.com:8080/something_else/xxxx, or just http://target.com:8080?
Thanks!

[jcrugzz]

@yleemj use the prependPath and set it to false. Then just provide the path you want to proxy to in the target URL.

[yleemj]

After I set prependPath to false, the problem still exists. Here is my code:

var httpProxy = require('http-proxy');
var proxy = httpProxy.createProxyServer( {
    prependPath: false
});

function doProxy(req, res, target) {
    proxy.web(req, res, {
        target: target
   });

I'm using expressjs. The req.originalUrl is '/user/A', req.baseUrl is '/user', and req.url is '/A'. the request is proxied to http://target.com/A, which doesn't exist. What I really want is http://target.com/. But if I set req.url to '/' manually, the path for the the static files in target server will be changed to '/user/'. E..g, http://target.com/static/app.js will be changed to http://originalSite.com/user/static/app.js. It should be http://originalSite.com/user/A/static/app.js, and then proxied to the target server.

[jcrugzz]

@yleemj Just for posterity, req.originalUrl and req.baseUrl have zero impact on how the request is proxied. http-proxy only cares about the req.url, the options you give it and the target. Now I'm still unsure why manually setting the req.url to / changes other behavior but I have provided an ignorePath option which will ignore the path that is given by the incoming request. Will this solve your use case? Your latest description honestly made your use case less clear.

[ferozed]

I have the same usecase. I want to run a proxy that forwards to a remote server, but changes the target path:

So for eg:

http://proxy.com/foo -> http://target.com/bar

I have tried ignorePath=true, and prependPath=false and none of them seem to work.

Here are my results:

prependPath: false, ignorePath: true -> http://target.com/foo
prependPath: true, ignorePath: true -> http://target.com/bar/foo
prependPath: true, ignorePath: false -> http://target.com/bar/foo
prependPath: false, ignorePath: false -> http://target.com/foo

How do I get it to forward to just the target Url I specify:

        // You can define here your custom logic to handle the request
        // and then proxy the request.
        proxy.web(req, res, { target: forwardUrl });

Essentially, I am trying to write a general purpose forwarding proxy, that will use the path of the incoming request to forward to any number of target applications.

[mereghost]

I have the same use case and issue right now. =/

The only way I got this working was to reassign req.url to the path I wanted.

[pwasem]

How and when did you reassign req.url? Could you post some code snippet please? Thank you!

[jcrugzz]

ignorePath is currently an unmerged PR. @ferozed did you use that branch? Let me merge the pull-request and bump the version and see if this fixes the issue you guys are having.

[jcrugzz]

please try 1.11.0 with ignorePath option. Otherwise open a new issue as this should be fixed.