Why are scripts slow to load in Firefox when using Visual Studio’s built-in development Web server (a.k.a. Cassini)?

re: Why are scripts slow to load in Firefox when using Visual Studio’s built-in development Web server (a.k.a. Cassini)?

Ran Davidovitz — Tue, 27 Jan 2009 11:52:24 GMT

this issue made me crazy!, thanks for sharing.

re: Why are scripts slow to load in Firefox when using Visual Studio’s built-in development Web server (a.k.a. Cassini)?

takepara — Tue, 30 Dec 2008 01:56:02 GMT

edit your hosts file.

%SystemRoot%\system32\drivers\hosts

127.0.0.1 localhost

#::1 localhost <- comment out here

re: Why are scripts slow to load in Firefox when using Visual Studio’s built-in development Web server (a.k.a. Cassini)?

MarcLaFleur — Mon, 29 Dec 2008 21:14:41 GMT

This is caused by an IPv6 DNS problem. By using the 127.0.0.1 address you're getting around this problem by a) using an IPv4 address and b) skipping DNS entirely.

You can also fix this by disabling IPv6 support in Firefox. Simply navigate to about:config and change the property “network.dns.disableIPv6” to true.

Credit to Dan Wahlin for finding this (http://weblogs.asp.net/dwahlin)