BridgeDB should respond with the same address:port to each request
When a Bridge has multiple listening addresses/ports, a valid bridge line is selected and returned to the client. No effort is made to make sure that the same address:port is returned for each request. This is a design flaw, as a single client could expose all listening addresses and ports of a given bridge.
BridgeDB should respond with the same address:port per bridge for repeat requests.
This can be implemented in a pretty straightforward way, by mapping the requesting {ip, email} to one of the address lines and one valid port.
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