/// <summary>
/// Create service record resolving enumerator
/// </summary>
/// <param name="proxy">The proxy endpoint(s) to use</param>
/// <param name="record">The service record to resolve</param>
/// <param name="ct"></param>
/// <returns></returns>
public static async Task <IDnsServiceResolver> CreateServiceRecordResolverAsync(
SocketAddress proxy, DnsServiceRecord record, bool cacheOnly, CancellationToken ct)
{
if (string.IsNullOrEmpty(record.Name) || string.IsNullOrEmpty(record.Type) ||
record.Removed)
{
throw new ArgumentException("Invalid service, no name, not type or been removed",
nameof(record));
}
var socket = new BrowseSocket(Socket.Provider, BrowseRequest.Service);
await socket.ConnectAsync(proxy ?? record.Interface, ct);
await socket.BrowseBeginAsync(record.ToSocketAddress(), ct);
return(new ServiceRecordResolver(record)
{
Socket = socket, CacheOnly = cacheOnly
});
}
internal ServiceRecordResolver(DnsServiceRecord service)
{
_service = service;
}
//
// Resolve service record to a host name, port, plus txt records.
//
public static Task <IDnsServiceResolver> BrowseAsync(DnsServiceRecord record,
CancellationToken ct) =>
BrowseAsync(record, false, ct);
//
// Resolve service record to a host name, port, plus txt records.
//
public static Task <IDnsServiceResolver> BrowseAsync(DnsServiceRecord record,
bool cached, CancellationToken ct) =>
BrowseAsync(null, record, cached, ct);
//
// Resolve service record to a host name, port, plus txt records.
//
public static Task <IDnsServiceResolver> BrowseAsync(SocketAddress proxy, DnsServiceRecord record,
CancellationToken ct) =>
BrowseAsync(proxy, record, false, ct);
/// <summary>
/// Resolve service record to a host name, port, plus txt records.
/// </summary>
/// <param name="proxy"></param>
/// <param name="service"></param>
/// <param name="cached">Only return items until cache is exhausted</param>
/// <param name="ct"></param>
/// <returns></returns>
public static Task <IDnsServiceResolver> BrowseAsync(SocketAddress proxy, DnsServiceRecord service,
bool cached, CancellationToken ct) =>
BrowseClient.CreateServiceRecordResolverAsync(proxy, service, cached, ct);
