HTTPServerInfoXML reports "loaded" even after encoder stopped

[kurtbendl]

Hi again guys,

I'm using the com.wowza.wms.http.HTTPServerInfoXML class
to get the status of the "live" streaming app. When I start a
stream with the encoder, it does what I expect and reports the app's
status as "loaded". However, when the encoder is no longer
broadcasting (I stop Wirecast), theHTTPProvider for the live app
continues to report "loaded" looooong after stream has stopped,
for well over an hour after the encoder stream has ceased.

What I expect to get is a status of "unloaded" as soon as Wirecast
(the encoder) stops sending a stream. So, one of these two options
could really help me out of this bind::

1. Is there a way (class?) to get a status from the "live" app
that returns something like true if the app is receiving a stream
and false if it is not?

Or...

2. If there's not a live *stream*, have the app roll-over
to some on-demand media?

I'm using WMS 2.0.0.8 on ec2, in case it matters.

Thanks much,

Kurt

[charlie]

At the API level if you call:

appInstance.getStreams().getStream(streamName);

and it returns null then the stream is not being published.

Charlie

[kurtbendl]

Thanks Charlie,

Your `appInstance.getStreams().getStream(streamName);` clue, along
with this post by rrlanham:
http://www.wowzamedia.com/forums/showthread.php?t=7652

...got me to the following code, which, although surely improper
(I've never touched java before), renders a json response that
instantly returns whether the app is actually receiving a stream
from the encoder or not (in case anyone else needs the same
and does not fear noob code).

I created a Wowza Class called "ITDLiveStatus" in eclipse, and then
somehow, and thankfully to all who have posted before, cobbled
the following together from various examples:

package com.itd.wms.httpdlistener;

import java.io.*;
import com.wowza.wms.http.*;
import com.wowza.wms.vhost.IVHost;
import com.wowza.wms.stream.*;
import com.wowza.wms.http.IHTTPRequest;
import com.wowza.wms.http.IHTTPResponse;
import com.wowza.wms.logging.*;


public class ITDLiveStatus extends HTTProvider2Base 
{
 
	public void onHTTPRequest(IVHost vhost, IHTTPRequest req, IHTTPResponse resp)
    {
        StringBuffer ret = new StringBuffer();

        String statusResult = new String("False");
        IMediaStream stream = vhost.getApplication("live").getAppInstance("_definst_").getStreams().getStream("kylive.sdp");
        if(stream != null)
        {
            statusResult = "True";
        }
        // build a JSON response...
        ret.append("{\"streaming\"" + " : " + "\"" + statusResult +"\"}");
        
        try
        {
		resp.setHeader("Content-Type", "application/json");
		OutputStream out = resp.getOutputStream();
		byte[] outBytes = ret.toString().getBytes();
		out.write(outBytes);
        }
		catch (Exception e)
		{
			WMSLoggerFactory.getLogger(HTTPServerVersion.class).error("HTTPServerInfoXML.onHTTPRequest: "+e.toString());
			e.printStackTrace();
		}

    }

}

...and then (in my test instance), I added a hostPort
entry into my VHost.xml file:

<!-- add the following HostPort definition to ./conf/VHost.xml -->

<!-- connectioninfo HostPort -->
<HostPort>
        <ProcessorCount>1</ProcessorCount>
        <IpAddress>192.168.0.100</IpAddress>
        <Port>8880</Port>
        <SocketConfiguration>
                <ReuseAddress>true</ReuseAddress>
                <ReceiveBufferSize>16000</ReceiveBufferSize>
                <SendBufferSize>16000</SendBufferSize>
                <KeepAlive>true</KeepAlive>
                <AcceptorBackLog>100</AcceptorBackLog>
        </SocketConfiguration>
        <HTTPStreamerAdapterIDs></HTTPStreamerAdapterIDs>
        <HTTPProviders>
                <HTTPProvider>
                        <BaseClass>com.itd.wms.httpdlistener.ITDLiveStatus</BaseClass>
                        <RequestFilters>*</RequestFilters>
                        <AuthenticationMethod>none</AuthenticationMethod>
                </HTTPProvider>
        </HTTPProviders>
</HostPort>

Thanks a million Charlie and rrlanham!

-kb

[rrlanham]

Cool, you're welcome. Thanks for sharing the result.

Richard