protected bool Equals(ServiceDefine other)
{
return(Guid.Equals(other.Guid) && Equals(ProviderIpEndPoint, other.ProviderIpEndPoint));
}
protected virtual void OnServiceRemoved(ServiceDefine obj)
{
ServiceRemoved?.Invoke(obj);
}
public void Start(int port = ServiceBroadcaster.BroadcastPort)
{
if (_listenservicing)
{
return;
}
_listenservicing = true;
_listenservice = true;
Task.Run(() => {
// Debug.WriteLine($"service-listener start at port{port}");
var udp = new UdpClient(port);
try {
IPEndPoint ipEndPoint = null;
while (_listenservice)
{
var head = udp.Receive(ref ipEndPoint).ToStruct <ServiceInfo>();
//Debug.WriteLine($"get service_info form {ipEndPoint},length={Marshal.SizeOf(head)}");
if (!head.GetIsCorrect(Filter))
{
continue;
}
// Debug.WriteLine($"validate service_info form {ipEndPoint}");
if (ServiceList.TryGetValue(head.ServiceUid, out ServiceDefine serviceDefine))
{
serviceDefine.LastTime = DateTime.Now;
}
else
{
var define = new ServiceDefine
{
Guid = head.ServiceUid,
LastTime = DateTime.Now,
ProviderIpEndPoint = new IPEndPoint(new IPAddress(head.IpBytes), head.ServicePort)
};
ServiceList.TryAdd(head.ServiceUid, define);
// Debug.WriteLine(
// $"new service_info add uid:{define.Guid}\r\n endpoint:{define.ProviderIpEndPoint}");
if (_bindServiceFactory != null && _bindServiceFactory.RemoteChannel == null)
{
_bindServiceFactory.RemoteChannel = define.ProviderIpEndPoint;
}
OnNewServiceAdded(define);
}
}
//维护服务列表
foreach (var guid in ServiceList.Keys)
{
if ((DateTime.Now - ServiceList[guid].LastTime).TotalSeconds > 2)
{
if (ServiceList.TryRemove(guid, out ServiceDefine define))
{
//Debug.WriteLine(
//$"old service_info removed uid:{define.Guid}\r\n endpoint:{define.ProviderIpEndPoint}");
if (_bindServiceFactory != null &&
Equals(_bindServiceFactory.RemoteChannel, define.ProviderIpEndPoint))
{
_bindServiceFactory.RemoteChannel = null;
}
OnServiceRemoved(define);
}
}
}
}
finally {
// Debug.WriteLine($"service-listener closed at {port}");
udp.Close();
_listenservicing = false;
}
});
}
protected virtual void OnNewServiceAdded(ServiceDefine obj)
{
NewServiceAdded?.Invoke(obj);
}
