private static int SerializeAddrInfos(ServiceCtx context, ulong responseBufferPosition, ulong responseBufferSize, IPHostEntry hostEntry, int port)
{
ulong originalBufferPosition = responseBufferPosition;
ulong bufferPosition = originalBufferPosition;
byte[] hostName = Encoding.ASCII.GetBytes(hostEntry.HostName + '\0');
using (WritableRegion region = context.Memory.GetWritableRegion(responseBufferPosition, (int)responseBufferSize))
{
Span <byte> data = region.Memory.Span;
for (int i = 0; i < hostEntry.AddressList.Length; i++)
{
IPAddress ip = hostEntry.AddressList[i];
if (ip.AddressFamily != AddressFamily.InterNetwork)
{
continue;
}
// NOTE: 0 = Any
AddrInfoSerializedHeader header = new AddrInfoSerializedHeader(ip, 0);
AddrInfo4 addr = new AddrInfo4(ip, (short)port);
AddrInfoSerialized info = new AddrInfoSerialized(header, addr, null, hostEntry.HostName);
data = info.Write(data);
}
uint sentinel = 0;
MemoryMarshal.Write(data, ref sentinel);
data = data[sizeof(uint)..];