On 01/21/2011 06:39 AM, Christian Hewitt wrote: > On 21 Jan 2011, at 06:36, Richard Mace wrote: > >> For 6 months of the year I live in Thailand but I have a home in England >> were I my own personal server. Amongst other things I use the server to >> run get_iplayer on. I log on to the server via ssh and manually run >> get_iplayer. I also run get_iplayer via a crontab schedule. I can then >> download manually from my server to my netbook in Thailand. This all >> works great apart from the downloads from my server are limited by the >> slow broadband upload speed. This brings me to my main purpose for this >> posting. I also use server to stream BBC TV and the higher quality radio >> streams. I do this by opening a ssh tunnel and redirecting a port thus:- >> ssh - -D 1080 [email protected] >> >> I then run get_iplayer locally (in Thailand) via tsocks. What this does >> is forwards all get_iplayer's network requests to my server in England. >> This works but again, the streams are limited in speed by the upload >> speed of my server's broadband, I can only stream the very low quality >> TV. My question is is if I set up my England server as a proxy server >> will I suffer the same speed limitation? Does the network traffic still >> pass through my home server? > For normal offline viewing you can configure get_iplayer to selectively proxy > only the http requests that are used to discover the CDN stream URL to bypass > the geolocation check. Once this has been discovered get_iplayer connects > directly to the CDN on port 1935 to start the download. Speeds are good as > you're connecting directly to the CDN and Akamai/Limelight have serious > bandwidth. > > For live viewing you need to configure get_iplayer to "proxy everything" so > that port 80 *and* port 1935 are sent through the proxy as the BBC has a > second geolocation check on the "live" flash streams in addition to the http > based CDN URL discovery process. In this situation the network path for the > SSH port forward method is effectively the same as running a proxy so there > should be no real-world difference in the speeds you see. The limiting factor > is the uplink speed on the UK broadband connection. > >> I Have also experimented with other method's UKiVPN, a UK based VPN >> company. They charge £5 a month for a UK based VPN service. This workks >> great but it seems stupid for me to pay £5 a month when I have my own UK >> server! > The VPN provider has substantially more bandwidth than the connection your UK > server is on so it works. I'm guessing your box is connected to the older BT > based ADSL network that will top-out somewhere around 40-50Kb/s uplink speeds > unless you are very close to the exchange. If the exchange has been enabled > for ADSL2+ (BT's 21st Century Network) or there is an unbundled provider like > Be* or a cable provider who offers higher bandwidth, an ISP swap may allow > you to self-stream successfully (check samknows..com to see what's > available). There is probably a scientific way to calculate the bandwidth > requirements but in my experience you need to be able to sustain 60-65Kb/s on > the upstream link for normal definition video content and double that for > higher quality streams. > > If your UK box is Linux or OSX based a squid proxy would be a useful tool for > downloading content directly to your netbook instead of downloading first and > then transferring. That said, with the network quality in Thailand being > generally sub-par you might find the volume of failed direct downloads > frustrating compared to your current arrangement where an IP (not UDP) > transfer is more tolerant of local network conditions. > > Christian > _______________________________________________ > get_iplayer mailing list > [email protected] > http://lists.infradead.org/mailman/listinfo/get_iplayer > > I have set-up a freenas box that acts as my personal proxy when I am out of the uk, I can then point get_iplayer at this to download content. I would be very interested in exactly how I can "configure get_iplayer to selectively proxy only the http requests that are used to discover the CDN stream URL to bypass the geolocation check etc." that way I would not be limited by the upstream bandwidth of my proxy.
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