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Requests being blocked client-side

April 11, 2014 12:45PM
I am seeing super strange behavior and I am absolutely stumped. If I open up two tabs in Google Chrome (34), and in the first refresh our application (foo.ourapp.com), which makes an ajax requests (via jQuery) that takes 20 or so seconds to complete. Then in the other new tab hit refresh on (foo.ourapp.com), the second tab blocks waiting until the ajax request on the first tab finishes. Inspecting Chrome developer tools shows:

http://cl.ly/image/1s3V353o1v2c

However, if I open up Firefox and load up (foo.ourapp.com) while the long running ajax request is firing in Chrome, it loads fine. Thus, I have determined that the client (Chrome) is blocking requests client-side. However, according to http://www.browserscope.org/?category=network it says Chrome supports 6 connections per hostname, which should be fine, as I am only making two requests.

Any ideas on this? Pretty standard nginx config, with the following notable exceptions:

listen 443 deferred ssl spdy;

add_header Strict-Transport-Security max-age=31556926;
add_header X-XSS-Protection "1; mode=block";
add_header Access-Control-Allow-Origin $scheme://$account.myapp.com;
add_header X-Frame-Options DENY;
add_header X-Content-Type-Options nosniff;

Running nginx/1.5.12 with SPDY 3.1.
Subject Author Posted

Requests being blocked client-side

justink101 April 11, 2014 12:45PM

Re: Requests being blocked client-side

Maxim Dounin April 11, 2014 02:42PM

Re: Requests being blocked client-side

justink101 April 16, 2014 04:58AM

Re: Requests being blocked client-side

Lee Valentine April 16, 2014 05:04AM

Re: Requests being blocked client-side

justink101 April 16, 2014 06:58PM

Re: Requests being blocked client-side

justink101 April 16, 2014 10:24PM



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