Tag Archives: spdy

mod_rpaf and intermittent port errors

We’re using mod_rpaf and trying to use it for SSL offloading so we can cache all HTTPS requests with Varnish. This has worked well in testing, but on production, we’re seeing intermittent port errors. So making 1’000 requests to the same URL over HTTP, we get several hundred requests showing in the apache logs as port 443.

This causes all sorts of unexpected side effects. Particularly with mod_pagespeed which serves 404 when the port has been set incorrectly. Nightmare.

Bottom line, we’ve take this out of our architecture until we can find a solution. The hardest part is that we can’t replicate the issue on staging. I’ve opened an issue.


SPDY, Googlebot, Alternate-Protocol and SEO

We deployed SPDY on our production sites on Monday. It’s hard to tell precisely, but it looks like our pages are being removed from Google search results.

Some background. We used the Alternate-Protocol: 443:npn-spdy/2. Our http pages are INDEX,FOLLOW and our https / SPDY pages are NOINDEX,NOFOLLOW.

Could it be that Googlebot takes follows the Alternate-Protocol header, loads the https version of the page, and then doesn’t index it because of the noindex tags?

Can’t find anything in Google about this issue. Anyone else have experience? I’ll try to post back here if we find anything more definitive than pure speculation…

Firefox SPDY alternate-protocol

Firefox does not support the alternate-protocol header part of SPDY. I’m not 100% confident of this, but from scanning this and reading this, that’s my understanding.

I couldn’t find a definitive answer to this question, so I’m posting this in the hope of saving others the search time. If you have information to the contrary, or if the situation changes, please let me know in the comments and I’ll update this post.

This raises the question, how do we deploy SPDY for Firefox users? Do we redirect all traffic to SSL anyway? Redirect only Firefox browsers that we think support SPDY? Only use SPDY for Chrome users? I’ll post more once we make a decision…