This example demonstrates a way to manage an HTML presentation with images, external style sheets, or JavaScript files in an HTTP provider with the Wowza Streaming Engine™ media server software Java API.
- Using the Wowza IDE, create a new Wowza Server Project, then create a new HTTP provider and copy this HTTP provider:
package com.wowza.wms.example.module.http; import java.io.*; import com.wowza.wms.http.*; import com.wowza.wms.vhost.*; import java.util.List; import java.util.Map; public class HTTPresentation extends HTTPProvider2Base { public void onHTTPRequest(IVHost vhost, IHTTPRequest req, IHTTPResponse resp) { if (!doHTTPAuthentication(vhost, req, resp)) return; req.parseBodyForParams(true); Map<String, List<String>> params = req.getParameterMap(); if (req.getQueryString()=="") { new FileResponder(resp, "/assets/wowza.html"); } if (params.containsKey("file")) { new FileResponder(resp, "/assets/" + params.get("file").get(0)); } } class FileResponder { FileResponder(IHTTPResponse resp, String loc) { try { InputStream is = this.getClass().getResourceAsStream(loc); BufferedInputStream inf = new BufferedInputStream(is); OutputStream out = resp.getOutputStream(); byte[] bytes = new byte[4096]; while(true) { int byteRead = inf.read(bytes); if (byteRead < 0) break; out.write(bytes, 0, byteRead); } } catch (Exception e) { } } } } - Add the HTTP provider to the /conf/VHost.xml/HostPort (1935)/HTTPProviders.
Put this second-to-last in the list (above com.wowza.wms.http.HTTPServerVersion):<HTTPProvider> <BaseClass>com.wowza.wms.example.module.http.HTTPresentation</BaseClass> <RequestFilters>*presentation</RequestFilters> <AuthenticationMethod>none</AuthenticationMethod> </HTTPProvider>
- From the Java code above, note the following line:
if (req.getQueryString()=="") { new FileResponder(resp, "/assets/wowza.html"); }
Create a package named assets. Create a new file named wowza.html in this package location, and then add this HTML:<html><head> <link rel="stylesheet" type="text/css" href="?file=wowza.css" /> <script src="?file=wowza.js"></script> <title></title></head> <body> <img src="?file=header.gif"> </body></html>
- Now note the following line from the HTTP provider:
if (params.containsKey("file")) { new FileResponder(resp, "/assets/" + params.get("file").get(0)); }
This serves the requests from HTML tags such as IMG, LINK, and SCRIPT. There is one of each in the HTML above:<link rel="stylesheet" type="text/css" href="?file=wowza.css" /> <script src="?file=wowza.js"></script> <img src="?file=header.gif">
For this HTML page to work properly, add these three files to the /assets package in the Wowza IDE:- wowza.css
- wowza.js
- header.gif
- View in a browser:
http://[wowza-ip-address]:1935/presentation
With this in place, you can manage an HTML presentation from these files in the /assets package.
Files you add to the /assets package are included the compiled .jar file. You can put images and other files on a web server and use absolute URLs to those resources.
