Disable etag Header in Express Node.js

Question

We have a need to remove the etag header from all HTTP responses in our Node.js Express application. We have a web services API written in Express where unexpected results are seen at the client when we send etags and the client sends back the if-none-match header.

We've tried app.disable('etag') and res.removeHeader('etag'), but neither work; the app sends the header regardless.

Is there any other means of disabling this header in all responses?

Answer 1

app.disable('etag') should work now, there has been a pull request merged to deal with this:

https://github.com/visionmedia/express/commit/610e172fcf9306bd5812bb2bae8904c23e0e8043

UPDATE: as Bigood pointed out in the comments the new way of doing things is the following

app.set('etag', false); // turn off 

Change occured with version 3.9.0: https://github.com/strongloop/express/releases/tag/3.9.0

For more options on setting the etag check the 4.x docs here: http://expressjs.com/4x/api.html#app.set

Answer 2

app.disable('etag') 

This will disable etag header for all requests, but not for static contents. The following does it for static content:

app.use(express.static(path.join(__dirname, 'public'), {         etag: false }));