Measuring network throughput
=> Max. Bandwidth = TCP Window Size / Latency.
The Max TCP Window size in the absence of window scaling is 65 535 bytes.
Example: Max Bandwidth "Toulouse-Dubai" = 65535 bytes / 0.220 s = 297886.36 bytes/s = 2.38 Mbit/s.
Over a single TCP connection between those endpoints, the tested Bandwidth will be restricted to 2.38 Mbit/s even if the contracted Bandwidth is greater.
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