RANDOM USER PROJECTS
An advanced rendering pipeline for Panda3D
Disney's Pirates of the Caribbean Online
Psychedelic Flythrough of the Mind of a Computer

Panda3D Manual: Downloading a File

To download a file while the game is running without blocking the connections one has to use HTTPClient and HTTPChannel objects. This will allow the file to be downloaded in the background using the downloadTask task.

self.http = HTTPClient()
self.channel = self.http.makeChannel(True)
self.channel.beginGetDocument(DocumentSpec('http://my.url/'))
self.rf = Ramfile()
self.channel.downloadToRam(self.rf)
taskMgr.add(self.downloadTask, 'download')
 
def downloadTask(self, task):
    if self.channel.run():
        # Still waiting for file to finish downloading.
        return task.cont
    if not self.channel.isDownloadComplete():
        print "Error downloading file."
        return task.done
    data = self.rf.getData()
    print "got data:"
    print data
    return task.done

You can also download to file

channel.downloadToFile(Filename(fileName))

The file channel can be quarried for further information while the game is running to get the current download state.

mbDownloaded = self.channel.getBytesDownloaded()/1024/1024
percentDownloaded = 100.*self.channel.getBytesDownloaded()/channel.getFileSize()