#pragma warning disable CS1998
private async ValueTask <AgentServiceRegistration> BuildRegisterationRequestAsync()
#pragma warning restore CS1998
{
if (registration != null)
{
return(registration);
}
var serviceId = _serviceHelper.GetRunningServiceId();
var serviceName = _serviceHelper.GetRunningServiceName();
var serviceTags = _serviceHelper.GetRunningServiceTags().ToArray();
var address = "http://localhost:5000";
IPAddress addr = null;
foreach (var addressString in _serverAddressesFeature.Addresses)
{
Logger.LogTrace($"Service discovery:Found address:{addressString}");
if (addr != null)
{
break;
}
address = addressString;
if (address == null)
{
continue;
}
if (address.StartsWith("http://+:") || address.StartsWith("https://+:"))
{
address = address.Replace("+", "[::]");
}
if (!Uri.TryCreate(address, UriKind.Absolute, out var uri))
{
continue;
}
if (IPAddress.TryParse(uri.DnsSafeHost, out addr))
{
if (IPAddress.Loopback.Equals(addr) || IPAddress.IPv6Loopback.Equals(addr))
{
addr = null;
continue;
}
if (IPAddress.Any.Equals(addr) || IPAddress.IPv6Any.Equals(addr))
{
addr = IPAddress.Loopback;
break;
}
}
else
{
addr = null;
}
}
Logger.LogTrace($"Service discovery:Current IP address is : {addr}");
Logger.LogTrace($"Service discovery:Nearest address:{address}");
if (addr == null)
{
Logger.LogCritical($"Service discovery:No usable IP address.(0)");
return(null);
}
if (!Uri.TryCreate(address, UriKind.Absolute, out var addressUri))
{
Logger.LogCritical($"Service discovery:Cannot build a usable URI.");
return(null);
}
var hostNameOrAddress = string.Empty;
if (IPAddress.Loopback.Equals(addr) || IPAddress.IPv6Loopback.Equals(addr))
{
//// lo(v6)
hostNameOrAddress = Dns.GetHostName();
}
else
{
hostNameOrAddress = addr.ToString();
}
Logger.LogTrace($"Service discovery:Current host name is : {hostNameOrAddress}");
Logger.LogTrace($"Service discovery:Current address uri is : {addressUri}");
var ipEntry = await Dns.GetHostEntryAsync(hostNameOrAddress);
Logger.LogTrace($"Service discovery:Found host name is : {ipEntry.HostName}");
var addressListString = ipEntry.AddressList.Aggregate(new StringBuilder(), (sb, s) => sb.Append(s).Append(","));
Logger.LogTrace($"Service discovery:Found all addresses are : {addressListString}");
bool isIpv6 = false;
var ipAddress = ipEntry.AddressList
.Where(ip => ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
.Where(ip => !IPAddress.Any.Equals(ip))
.Where(ip => !IPAddress.Loopback.Equals(ip))
.Where(ip => !IPAddress.None.Equals(ip))
.FirstOrDefault();
if (ipAddress == null)
{
isIpv6 = true;
ipAddress = ipEntry.AddressList
.Where(ip => ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
.Where(ip => !IPAddress.IPv6Any.Equals(ip))
.Where(ip => !IPAddress.IPv6Loopback.Equals(ip))
.Where(ip => !IPAddress.IPv6None.Equals(ip))
.FirstOrDefault();
}
if (ipAddress == null)
{
Logger.LogCritical($"Service discovery:No usable IP address.(1)");
return(null);
}
var host = ipAddress.ToString();
if (isIpv6)
{
host = $"[{host}]";
}
address = $"{addressUri.Scheme}://{host}:{addressUri.Port}";
Logger.LogTrace($"Service discovery:Try resolving address:{address}");
if (!Uri.TryCreate(address, UriKind.Absolute, out addressUri))
{
Logger.LogCritical($"Service discovery:No usable IP address.(2)");
return(null);
}
Logger.LogTrace($"Service discovery:The new address uri is :{addressUri}");
var checks = _healthCheckHelper.GetHeathCheckInfo()
.Select(info => new AgentServiceCheck
{
HTTP = address + info.Path,
Interval = TimeSpan.FromSeconds(info.Interval),
Status = HealthStatus.Passing
})
.ToArray();
var request = registration = new AgentServiceRegistration
{
ID = serviceId,
Name = serviceName,
Address = addressUri.DnsSafeHost,
Port = addressUri.Port,
Tags = serviceTags,
Checks = checks
};
return(request);
}