LlReleaseURL

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函数名
Function: llReleaseURL( string url );
参数:string url - URL释放
返回值:释放指定的URL,它将不再可用。
注意事项
url在某些情况下会自动释放并失效。在下列情况下,不需要调用llReleaseURL。但是之后你得申请一个新的
 当该区域重新启动或脱机时
 当包含url的脚本被重置或重新编译时
 当包含脚本的对象被删除或进入目录时
示例
重要:永远不要忘记再次发布你所请求的URL !url和prims一样是区域资源。如果你把他们都带走了,你就会和sim所有者或地产经理陷入大麻烦。
string url;
key urlRequestId;
key selfCheckRequestId;
 
request_url()
{
    llReleaseURL(url);
    url = "";
    llSetTimerEvent(0.0);
    urlRequestId = llRequestURL();
}
 
throw_exception(string inputString)
{
    llInstantMessage(llGetOwner(), inputString);
 
    // 是的,重新启动是处理异常的坏方法.
    // 然而,这只是一个演示脚本…
 
    llResetScript();
}
 
default
{
    on_rez(integer start_param)
    {
        llResetScript();
    }
 
    changed(integer change)
    {
        if (change & CHANGED_OWNER | CHANGED_REGION | CHANGED_REGION_START)
            llResetScript();
    }
 
    state_entry()
    {
        request_url();
    }
 
    http_request(key id, string method, string body)
    {
        integer responseStatus = 400;
        string responseBody = "Unsupported method";
 
        if (method == URL_REQUEST_DENIED)
            throw_exception("The following error occurred while attempting to get a free URL for this device:\n \n" + body);
        else if (method == URL_REQUEST_GRANTED)
        {
            url = body;
            llLoadURL(llGetOwner(), "Click to visit my URL!", url);
 
            // 每5分钟检查一次丢失的URL
            llSetTimerEvent(300.0);
        }
        else if (method == "GET")
        {
            responseStatus = 200;
            responseBody = "Hello world!";
        }
        // else if (method == "POST") ...;
        // else if (method == "PUT") ...;
        // else if (method == "DELETE") { responseStatus = 403; responseBody = "forbidden"; }
 
        llHTTPResponse(id, responseStatus, responseBody);
    }
 
    http_response(key id, integer status, list metaData, string body)
    {
        if (id == selfCheckRequestId)
        {
            // 如果你不经常这样做,现在是习惯这样做的好时机!
            selfCheckRequestId = NULL_KEY;
 
            if (status != 200)
                request_url();
        }
        else if (id == NULL_KEY)
            throw_exception("Too many HTTP requests too fast!");
    }
 
    timer()
    {
        selfCheckRequestId = llHTTPRequest(url,
                                [HTTP_METHOD, "GET",
                                    HTTP_VERBOSE_THROTTLE, FALSE,
                                    HTTP_BODY_MAXLENGTH, 16384],
                                "");
    }
}
相关函数
llRequestURL

llRequestSecureURL

llGetFreeURLs

llHTTPResponse

llGetHTTPHeader

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