net.socket.send(conn,callback) errors

[drv53b6]

net.socket.send(conn,callback) errors:

1. for callback(conn, pl) need documentation for 2nd parameter
2. if send_buffer overloaded system rebooting
3. mast block execution till send_buffer wil be send
4. or need net.socket.flush(conn) function for block till send_buffer will be send

[drv53b6]

https://github.com/marcoskirsch/nodemcu-httpserver/blob/master/httpserver.lua show some very hard wey to jast send big data with coroutine.yield() coroutine.create() coroutine.resume() need something more easy for this

[drv53b6]

but if remote close connection no way to force stop coroutine tread, need check connection status every time?