411 Length Required in Firefox 3

01/19/2010 411 Length Required in Firefox 3
Posted by Andre Small

When using AJAX in FF3.0.x you need to be careful if you are doing a post to webservice method or any end-point that does not accept any parameters as you may get a "411 Length Required - HTTP Error 411. The request must be chunked or have a content length." error from the server.

Since you are not sending any parameters to service, a Content-length header of 0 is set in the request. To fix this, add an empty javascript object. In the case of jQuery, it would look something like this (the change is highlighted in bold):

$.ajax({

type:

"POST",

url: "MyService.

asmx/Logout",

contentType:

"application/json; charset=utf-8",

data: {},

success:

function (msg) { //... },

error:

function (e) { //... }