private void MergeServices(Service service)
{
Service rightService = services.Where(s => s.Protocol == service.Protocol && s.HostName == service.HostName).SingleOrDefault();
if (rightService != null)
{
switch (service.State)
{
case State.Removed:
services.Remove(rightService);
if (ServiceRemoved != null)
ServiceRemoved(rightService);
break;
case State.Added:
rightService.Renew(service.Ttl);
break;
}
}
else
{
if (service.State == State.Added)
{
services.Add(service);
if (ServiceFound != null)
ServiceFound(service);
}
}
}
internal static Service BuildService(HttpRequest item)
{
Service s = new Service();
if (item.Headers.ContainsKey("NT"))
s.Protocol = item.Headers["NT"];
s.properties = item.Headers;
s.properties.Remove("NT");
s.Addresses.Add(new Network.Dns.EndPoint() { });
s.Addresses[0].Addresses.Add(IPAddress.Parse(new Uri(s["LOCATION"]).Host));
if (item.Headers.ContainsKey("NTS"))
{
switch (item.Headers["NTS"])
{
case "ssdp:alive":
s.State = State.Added;
break;
case "ssdp:byebye":
s.State = State.Removed;
break;
}
}
if (item.Headers.ContainsKey("CACHE-CONTROL"))
{
string cacheControl = item.Headers["CACHE-CONTROL"];
string ttl = cacheControl.Substring(cacheControl.IndexOf("max-age=") + 8, 4);
s.expiration = DateTime.Now.AddSeconds(int.Parse(ttl));
}
return s;
}
internal static Service BuildService(HttpResponse item)
{
Service s = new Service();
if (item.Headers.ContainsKey("ST"))
s.Protocol = item.Headers["ST"];
if (item.Headers.ContainsKey("NT"))
s.Protocol = item.Headers["NT"];
s.properties = item.Headers;
if (item.Headers.ContainsKey("LOCATION"))
{
s.Location = new Uri(item.Headers["LOCATION"]);
s.properties.Remove("LOCATION");
}
s.properties.Remove("ST");
s.Addresses.Add(new Network.Dns.EndPoint() { });
if (s.Location != null)
s.Addresses[0].Addresses.Add(IPAddress.Parse(s.Location.Host));
if (item.Headers.ContainsKey("CACHE-CONTROL"))
{
string cacheControl = item.Headers["CACHE-CONTROL"];
int startOfMaxAge = cacheControl.IndexOf("max-age=", StringComparison.InvariantCultureIgnoreCase);
int endOfMaxAge = cacheControl.IndexOf(";", startOfMaxAge);
if (endOfMaxAge == -1)
endOfMaxAge = cacheControl.Length;
string ttl = cacheControl.Substring(startOfMaxAge + 8, endOfMaxAge - (startOfMaxAge + 8));
s.expiration = DateTime.Now.AddSeconds(int.Parse(ttl));
}
return s;
}
