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USKevin Nisbet
 

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  1. USKevin Nisbet
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    1. POInterleaving updates to a .net dictionary inside a tight loop
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    1. CO@sehugg Those are definitely valuable, but I've never looked at them to see how they work, so they may suffer from some similar problems. The only one I know how it works and is absolutely reliable is the Rim Relay network, where they get a private connection into the wireless carriers network, and can send data to the device with no firewalls and no interference. The Apple / Google systems may use very similar long poll which I don't think is ideal, but I've never gone and taken a capture off any of these devices to see.
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    2. CO@Mrk Mnl I did a quick search, and it appears linux ip tables cleans up it's state tables after 30 minutes, which at least some home equipment is based off of. There is a newer OS vendor for home equipment which I can't remember the name of off hand though, so I can't look up what they use, but it should be in the same range somewhere, so you can try a keep alive of 25 minutes and see what happens.
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      1. POKeep Alive TCP/IP connected sockets over the Internet - when? how? and how much?
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    3. COI want to be very clear, a router does not hold a TCP connection, it doesn't care, and it is not stateful of any connections. Pure routing functionality only looks the the IP header (layer 3) to see where the packet goes, and it's routing tables are pre calculated. Statefull nodes including NATs (included on home "routers") and firewalls may be connection aware, and each will have their own timeouts. On pretty much any network the amount of traffic for keep alives is small. However, don't set this really low on a mobile network, as it does waste ALOT of resources.
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      1. POKeep Alive TCP/IP connected sockets over the Internet - when? how? and how much?
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