ERR_CONTENT_LENGTH_MISMATCH on nginx and proxy on Chrome when loading large files

Question

I'm getting the following error on my chrome console:

GET http://localhost/grunt/vendor/angular/angular.js net::ERR_CONTENT_LENGTH_MISMATCH  

This only happens when a simultaneous requests are shot towards nginx e.g. when the browsers cache is empty and the whole app loads. Loading the resource above as a single requests succeeds.

Here are the headers to this requests, copied from Chrome:

Remote Address:127.0.0.1:80 Request URL:http://localhost/grunt/vendor/angular/angular.js Request Method:GET Status Code:200 OK Request Headersview source Accept:*/* Accept-Encoding:gzip,deflate,sdch Accept-Language:en-US,en;q=0.8,de;q=0.6,pl;q=0.4,es;q=0.2,he;q=0.2,gl;q=0.2 Cache-Control:no-cache Connection:keep-alive Cookie:gs_u_GSN-265185-D=1783247335:2567:5000:1377697930719 Host:localhost Pragma:no-cache Referer:http://localhost/grunt/ User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.122 Safari/537.36 Response Headersview source Accept-Ranges:bytes Cache-Control:public, max-age=0 Connection:keep-alive Content-Length:873444 Content-Type:application/javascript Date:Tue, 23 Sep 2014 11:08:19 GMT ETag:"873444-1411465226000" Last-Modified:Tue, 23 Sep 2014 09:40:26 GMT Server:nginx/1.6.0 

the real size of the file:

$ ll vendor/angular/angular.js -rw-rw-r--  1 xxxx  staff  873444 Aug 30 07:21 vendor/angular/angular.js 

As you can see Content-Length and the real size of the file are the same, so that's weird

And the nginx configuration to this proxy:

location /grunt/ {     proxy_pass  http://localhost:9000/; } 

Any ideas?

Thanks

EDIT: found more info on the error log:

2014/09/23 13:08:19 [crit] 15435#0: *8 open() "/usr/local/var/run/nginx/proxy_temp/1/00/0000000001" failed (13: Permission denied) while reading upstream, client: 127.0.0.1, server: localhost, request: "GET /grunt/vendor/angular/angular.js HTTP/1.1", upstream: "http://127.0.0.1:9000/vendor/angular/angular.js", host: "localhost", referrer: "http://localhost/grunt/" 

Answer 1

Adding the following line to the nginx config was the only thing that fixed the net::ERR_CONTENT_LENGTH_MISMATCH error for me:

proxy_buffering off;