我正在尝试使用aSubject.cancel(Components.results.NS_BINDING_SUCCEEDED);
取消HTTP请求,但它不起作用。代码如下。有人可以纠正吗?
function(aSubject, aTopic, aData)
{
if ("http-on-modify-request" == aTopic)
{
//get the http request url
var url = aSubject.QueryInterface(Components.interfaces.nsIHttpChannel).originalURI.spec;
//get the referer of http request (this error gives an error; dont know why :(
var a = aSubject.QueryInterface(Components.interfaces.nsIHttpChannel).getRequestHeader("referer");
//Cancel http request from other domains
if (url.split('//')[1].split('/')[0] != a.split('//')[1].split('/')[0])
{
//the code below don't work! Someone please correct it.
//code to cancel http request
aSubject.cancel(Components.results.NS_BINDING_SUCCEEDED);
}
}
}
答案 0 :(得分:2)
这可能是因为NS_BINDING_SUCCEEDED不是错误代码(是的,文档似乎是错误的)。您实际想要使用的是Components.results.NS_BINDING_ABORTED
。
顺便说一下,您似乎在比较URL中的主机名。鉴于您已经有一个nsIURI对象,这可以更轻松地完成:
var requestHost = aSubject.QueryInterface(Components.interfaces.nsIHttpChannel).originalURI.host;
var referrerHost = aSubject.QueryInterface(Components.interfaces.nsIHttpChannel).referrer.host;
if (requestHost != referrerHost)
{
aSubject.cancel(Components.results.NS_BINDING_ABORTED);
}