Send data to client from server.

[kirby561 (kirby5610)]

This is from ages ago but if you’re here from Google, I wrote a component that makes this really easy called UTransferComponent. It chunks up the data into pieces that can be sent in an RPC call and sends as many chunks per tick as it can while not overflowing the outgoing reliable buffer. It’s bidirectional so you can use SendBufferToServer or SendBufferToClient and then retrieve the data on that side.
This is a gist with the code for it:

https://gist.github.com/kirby561/b04b6a875725eab17fc46a8808f71e9b

And a video on how to use it:

Tutorial: How to Transfer HUGE files using RPC calls in C++ / Unreal Engine