llReleaseURL

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/LSL

ReleaseURL

llReleaseURL

Summary

Function: llReleaseURL( string url );

0.0	Forced Delay
10.0	Energy

Releases the specified URL, it will no longer be usable.

• string

url

–

URL to release

Caveats

• URLs are automatically released and invalidated in certain situations. In the following situations, there is no need to call llReleaseURL. But you will have to request a new one afterwards
  • When the region is restarted or goes offline
  • When the script holding the URLs is reset, or recompiled
  • When the object containing the script is deleted, or taken to inventory

Examples

Important: Never ever forget to release a URL again which you have requested! URLs are region resources just like prims. If you take them all you can get into big trouble with the sim owner and/or estate managers.

string url;
key urlRequestId;
key selfCheckRequestId;
 
request_url()
{
    llReleaseURL(url);
    url = "";
    llSetTimerEvent(0.0);
    urlRequestId = llRequestURL();
}
 
throw_exception(string inputString)
{
    llInstantMessage(llGetOwner(), inputString);
 
    // yeah, bad way to handle exceptions by restarting.
    // However this is just a demo script...
 
    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);
 
            // check every 5 mins for dropped 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)
        {
            // If you're not usually doing this,
            // now is a good time to get used to doing it!
            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],
                                "");
    }
}

See Also

Functions

•	llRequestURL
•	llRequestSecureURL
•	llGetFreeURLs
•	llHTTPResponse
•	llGetHTTPHeader

Articles

•

LSL http server

Deep Notes

History

• SVN:1836 r112899 Trunk

Signature
function void llReleaseURL( string url );