/// <summary>
/// Initializes and starts a new instance of a <see cref="QuicListener" />.
/// </summary>
/// <param name="options">Options to start the listener.</param>
private unsafe QuicListener(QuicListenerOptions options)
{
GCHandle context = GCHandle.Alloc(this, GCHandleType.Weak);
try
{
QUIC_HANDLE *handle;
ThrowHelper.ThrowIfMsQuicError(MsQuicApi.Api.ApiTable->ListenerOpen(
MsQuicApi.Api.Registration.QuicHandle,
&NativeCallback,
(void *)GCHandle.ToIntPtr(context),
&handle),
"ListenerOpen failed");
_handle = new MsQuicContextSafeHandle(handle, context, MsQuicApi.Api.ApiTable->ListenerClose, SafeHandleType.Listener);
}
catch
{
context.Free();
throw;
}
// Save the connection options before starting the listener
_connectionOptionsCallback = options.ConnectionOptionsCallback;
_acceptQueue = Channel.CreateBounded <PendingConnection>(new BoundedChannelOptions(options.ListenBacklog)
{
SingleWriter = true
});
// Start the listener, from now on MsQuic events will come.
using MsQuicBuffers alpnBuffers = new MsQuicBuffers();
alpnBuffers.Initialize(options.ApplicationProtocols, applicationProtocol => applicationProtocol.Protocol);
QuicAddr address = options.ListenEndPoint.ToQuicAddr();
if (options.ListenEndPoint.Address.Equals(IPAddress.IPv6Any))
{
// For IPv6Any, MsQuic would listen only for IPv6 connections. This would make it impossible
// to connect the listener by using the IPv4 address (which could have been e.g. resolved by DNS).
// Using the Unspecified family makes MsQuic handle connections from all IP addresses.
address.Family = QUIC_ADDRESS_FAMILY_UNSPEC;
}
ThrowHelper.ThrowIfMsQuicError(MsQuicApi.Api.ApiTable->ListenerStart(
_handle.QuicHandle,
alpnBuffers.Buffers,
(uint)alpnBuffers.Count,
&address),
"ListenerStart failed");
// Get the actual listening endpoint.
address = GetMsQuicParameter <QuicAddr>(_handle, QUIC_PARAM_LISTENER_LOCAL_ADDRESS);
LocalEndPoint = address.ToIPEndPoint(options.ListenEndPoint.AddressFamily);
}
