// SendTo allocates too:
// https://github.com/mono/mono/blob/f74eed4b09790a0929889ad7fc2cf96c9b6e3757/mcs/class/System/System.Net.Sockets/Socket.cs#L2240
// -> the allocation is in EndPoint.Serialize()
// NOTE: technically this function isn't necessary.
// could just pass IPEndPointNonAlloc.
// still good for strong typing.
public static int SendTo_NonAlloc(
this Socket socket,
byte[] buffer,
int offset,
int size,
SocketFlags socketFlags,
IPEndPointNonAlloc remoteEndPoint)
{
EndPoint casted = remoteEndPoint;
return(socket.SendTo(buffer, offset, size, socketFlags, casted));
}
// always pass the same IPEndPointNonAlloc instead of allocating a new
// one each time.
//
// use IPEndPointNonAlloc.temp to get the latest SocketAdddress written
// by ReceiveFrom_Internal!
//
// IMPORTANT: .temp will be overwritten in next call!
// hash or manually copy it if you need to store it, e.g.
// when adding a new connection.
public static int ReceiveFrom_NonAlloc(
this Socket socket,
byte[] buffer,
int offset,
int size,
SocketFlags socketFlags,
IPEndPointNonAlloc remoteEndPoint)
{
// call ReceiveFrom with IPEndPointNonAlloc.
// need to wrap this in ReceiveFrom_NonAlloc because it's not
// obvious that IPEndPointNonAlloc.Create does NOT create a new
// IPEndPoint. it saves the result in IPEndPointNonAlloc.temp!
EndPoint casted = remoteEndPoint;
return(socket.ReceiveFrom(buffer, offset, size, socketFlags, ref casted));
}
// same as above, different parameters
public static int ReceiveFrom_NonAlloc(this Socket socket, byte[] buffer, IPEndPointNonAlloc remoteEndPoint)
{
EndPoint casted = remoteEndPoint;
return(socket.ReceiveFrom(buffer, ref casted));
}