Wt

Hi,

I am trying to create a file dynamically on the server before serving it. When I try to access the file using wget an empty file gets downloaded. My guess is that I am not using the asynchronous response feature correctly. Can you please give suggestions on how to use this properly.

class GhostFileResource : public Wt::WResource
{
   public:
    virtual ~GhostFileResource(){
        beingDeleted();
    }
   protected:
        virtual void handleRequest(const Wt::Http::Request &request,Wt::Http::Response &response){
            std::string fetch_command_prefix = "wget http://www.webtoolkit.eu/videos";
        std::string dynamic_command = fetch_command_prefix + request.path();
        std::cout<< dynamic_command <<std::endl; 
        system(dynamic_command.c_str());
        /*maybe do some more processing here*/
        WFileResource *file = new WFileResource( "/sintel_trailer.mp4" );
            response.setMimeType ("video/mp4");
                response.out() << file;
       }
};

//ask for a file that currently does not exist on server
//GhostFileResource gfr;
//server.addResource(&gfr, "/sintel_trailer.mp4"); 

$ wget http://<snip>:9090/sintel_trailer.mp4
--2012-06-08 14:08:11--  http://<snip>:9090/sintel_trailer.mp4
Connecting to <snip>:9090... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [video/mp4]
Saving to: `sintel_trailer.mp4'
    [ <=>                                                                                ] 10          --.-K/s   in 0s      
2012-06-08 14:08:14 (1.12 MB/s) - `sintel_trailer.mp4' saved [10]

$ ./bin/WebAvStatic --docroot . --http-address 0.0.0.0 --http-port 9090
[2012-Jun-08 14:08:02.997335] 25611 - [info] "config: reading Wt config file: /etc/wt/wt_config.xml (location = './bin/WebAvStatic')"
[2012-Jun-08 14:08:02.998749] 25611 - [info] "WServer/wthttp: initializing built-in wthttpd"
[2012-Jun-08 14:08:02.999157] 25611 - [info] "wthttp: started server: http://0.0.0.0:9090"
wget http://www.webtoolkit.eu/videos/sintel_trailer.mp4
--2012-06-08 14:08:10--  http://www.webtoolkit.eu/videos/sintel_trailer.mp4
Resolving www.webtoolkit.eu (www.webtoolkit.eu)... 207.210.65.76
Connecting to www.webtoolkit.eu (www.webtoolkit.eu)|207.210.65.76|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 4357159 (4.2M) [video/mp4]
Saving to: `sintel_trailer.mp4'
100%[===================================================================================================================>] 4,357,159   1.76M/s   in 2.4s    
2012-06-08 14:08:13 (1.76 MB/s) - `sintel_trailer.mp4' saved [4357159/4357159]
142.58.185.39 - - [2012-Jun-08 14:08:13.434861] "GET /sintel_trailer.mp4 HTTP/1.0" 200 10
[2012-Jun-08 14:08:13.435235] 25611 - [info] "WebRequest: took 2529.36ms"