private async Task RunAnnounceLoopAsync() {
await TaskEx.YieldToThreadPool();
var announce = new AnnouncementDto { Identity = identity };
while (!shutdownCancellationToken.IsCancellationRequested) {
try {
await payloadSender.BroadcastAsync(announce).ConfigureAwait(false);
await Task.Delay(kAnnounceIntervalMillis, shutdownCancellationToken).ConfigureAwait(false);
} catch (OperationCanceledException) {
// shutdown cancellation token cancelled
}
}
}
private void HandleAnnouncement(UdpClientRemoteInfo remoteInfo, AnnouncementDto x) {
announcementsReceivedCounter.Increment();
var peerIdentity = x.Identity;
var peerId = peerIdentity.Id;
bool isNewlyDiscoveredRoute = false;
RoutingContext addedRoutingContext = null;
UdpUnicaster addedUnicaster = null;
var routingContext = routingContextsByPeerId.GetOrAdd(
peerId,
add => {
isNewlyDiscoveredRoute = true;
var unicastReceivePort = int.Parse((string)x.Identity.Properties[UdpConstants.kUnicastPortIdentityPropertyKey]);
var unicastIpAddress = remoteInfo.IPEndpoint.Address;
var unicastEndpoint = new IPEndPoint(unicastIpAddress, unicastReceivePort);
var unicastRemoteInfo = new UdpClientRemoteInfo {
Socket = remoteInfo.Socket,
IPEndpoint = unicastEndpoint
};
addedUnicaster = udpUnicasterFactory.Create(unicastRemoteInfo);
return addedRoutingContext = new RoutingContext(addedUnicaster);
});
if (addedRoutingContext == routingContext) {
addedUnicaster.Initialize();
}
if (isNewlyDiscoveredRoute) {
routingTable.Register(peerId, routingContext);
}
peerTable.GetOrAdd(peerId).HandleInboundPeerIdentityUpdate(peerIdentity);
}