WiFi does not have such a range normally. In any case, you will need a number of bridges/repeaters. You can send from one repeater to another over a long distance using a Yagi-Uda directional antenna. I've used them in the past to bridge local WiFi transmitters over a distance of 100's of yards to over a kilometer. Bear in mind that you may well violate federal (FCC) power limits using this technology!
rubberman
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My guess is that drindran is simply trying to stuff his link in a response. there are others similar to this post by this user.
JorgeM
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People that ask questions like this are usually doing it for homework from school or projects for university. I don't know about you but I have better things to spend my time on, like people that have problems that need help.
Rik from RCE
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The scaling option is used internally by the protocol to decide how many bytes can be sent out on the wire at a time. Without scaling, you are confined by the size of the window field which is 16 bits. With only 16 bits you get 2^16 or 65535 bytes. For certain links (in LFNs) the bandwidth-dealy product (BDP) allows for a much larger amount of bytes to be in transit at any given time. If you use the scaling option, you can left shift the value of the window field to acheive much higher windows on such networks.
For example, if you have a BDP of 124,733 bytes then 65,535 bytes will only fill ~52% of that without scaling. However, setting the scaling to left-shift the window by 4 you have a theoretical window cap of 2^16 << 4 or 1,048,576 bytes which is more than capable of saturating the link described above.
Note that the scaling negotiation happens only once during connection handshake and is fixed for the remainder of the connection.
L7Sqr
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