Download viber for android 4.1.2 pdf#

If multiple attacks of this sort were launched from different IPs on different Eyeball networks, it would start to qualify as a DDoS attack in my book.īecause the sources are on eyeball networks with ever changing IP's (over time, but not during an attack), using IP blocking is of limited effectiveness, and blocks need to be aged-out so they don't affect legitimate users. The client pumps many simultaneous requests (I see 60-80 typically), and then it appears the client runs out of bandwidth requests stall, subside, and then re-emerge. I've been seeing a rapidly increasing incidence of simultaneous GET requests with this profile on streaming servers in the past 6 months, but going back a few years with much lesser volume. The second request (which I assume is from the Android OS, and not the webview) shows the user agent:ĭalvik/1.6.0 (Linux U Android 4.2.2 Galaxy Nexus Build/JDQ39) Mozilla/5.0 (Linux U Android 4.2.2 en-us Galaxy Nexusīuild/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile In my first request, from the webview, I see the user agent: The two request strangeness has been discuss before, see Is setDownloadListener onDownloadStart called after the webview already Gets the file? and WebView - can't download file without requesting it twice?. In the second request, the Dalvik user agent is presented. However, before this viewer is launched Android makes a second request for the same URL.

Download viber for android 4.1.2 pdf#

What I've found is that the Android webview cannot handle the PDF content type, so it launches a PDF viewer through an intent. The requested URL was to download a PDF file. In my case, the first request (with the Mozilla User agent) was from an embedded webview.

I just noticed a similar pattern of User-agents for back to back requests.