Changing mountpoint for client automatically

[d1ken]

Feature request :-)
This feature was implemented on this fork https://github.com/baidu/ntripcaster.
Just on GGA come from client, calculate distances to each mountpoint and pipe to mountpoint with min distance.
For this purpose created virtual AUTO mountpoint, but in code I can not found it, looks like code checks for mountpoint existance from client's request, if mountpoint does not exist then auto select mountpoint.
https://github.com/baidu/ntripcaster/blob/476502cd4732f90664a7676270e2f549cf2e3364/src/client.c#L118
https://github.com/baidu/ntripcaster/blob/476502cd4732f90664a7676270e2f549cf2e3364/src/utility.c#L1331

Overlap (or hysteresis distance) feature I think could also be useful, like here
https://www.alberding.eu/pdf/en_Nearest_base_feature.pdf

[nebkat]

This is one of the main currently planned features, although I am still thinking of a clean implementation for it.

One potential solution is to have a class that extends Mountpoint and deals with the selection of servers per client. The benefit here is that the information about which client is being forwarded to which real mountpoint can be easily maintained (for visualization or statistics).

Another solution is to have a special Server class that pipes a different stream based on the client input. The benefit then is that it allows for more advanced streams such as VRS in future, but hides the true data source.