integer mychannel = -8888;
integer particle_chan = -270510;
string listenfor;
string response;
string detach;

key masterid;
key handle;
key them = NULL_KEY;
string URL = "";
key RequestID;

default
{
    state_entry()
    {
        masterid = llGetOwner();
        handle = llGetKey();
        listenfor = (string)masterid + "handle";
        response = (string)masterid + "handle ok";
        detach = (string)masterid + "handle detached";
        llListen(mychannel, "", NULL_KEY, listenfor);
        llSay(mychannel, response);
    }

    attach(key id)
    {
        if (NULL_KEY == id)
            llSay(mychannel, detach);
    }

    listen(integer channel, string name, key id, string message)
    {
        llSay(mychannel, response);
        llSay(particle_chan, handle + "#" + masterid);
        if (NULL_KEY == them)
            them = llGetOwnerKey(id);
    }

    dataserver(key id, string data)
    {
        list input = llParseStringKeepNulls(data, ["|"], []);
        string domain = llList2String(input, 0);
        if ("URL" == domain)
            URL = llList2String(input, 1);
    }
 
    http_response(key id, integer status, list metaData, string body)
    {
        if (id == RequestID)
        {
            RequestID = NULL_KEY;
            if (status != 200)
                llOwnerSay("HTTP error code " + status + "\n" + body);
        }
        else if (id == NULL_KEY)
            llOwnerSay("Too many HTTP requests too fast!");
    }

    on_rez(integer param)
    {
        llResetScript();
    }

    touch_start(integer total_number)
    {
        llSay(particle_chan, handle + "#" + masterid);
    }

    changed(integer change)
    {
        if ("" != URL)
        {
            if (change & CHANGED_REGION)
            {
                RequestID = llHTTPRequest(URL, 
                            [HTTP_METHOD, "POST", HTTP_VERBOSE_THROTTLE, FALSE, HTTP_BODY_MAXLENGTH, 16384],
                            llEscapeURL("REGION|" + llGetRegionName() + "|" + (string)llGetPos()));
                llOwnerSay("Changed region to " + llGetRegionName() + " - " + (string)llGetPos()
                            + "\n  Requesting that " + osKey2Name(them) + " join me.");
            }
            else if (change & CHANGED_TELEPORT)
            {
                llSleep(1.0);
                RequestID = llHTTPRequest(URL,
                            [HTTP_METHOD, "POST", HTTP_VERBOSE_THROTTLE, FALSE, HTTP_BODY_MAXLENGTH, 16384],
                                llEscapeURL("TELEPORT|" + llGetRegionName() + "|" + (string)llGetPos()));
                llOwnerSay("Teleported to " + llGetRegionName() + " - " + (string)llGetPos()
                            + "\n  Requesting that " + osKey2Name(them) + " join me.");
            }
        }
    }
}