private void CompleteMessage(Messages.MessageBase msg, List <string> lines)
{
if (lines.Count == 0)
{
return;
}
bool isBoundaryFound = false;
foreach (var item in lines)
{
if (isBoundaryFound)
{
msg.Content += item + "\r\n";
}
else
{
isBoundaryFound = item == "";
if (!isBoundaryFound)
{
msg.Headers.Add(item);
}
}
}
}
public Messages.MessageBase Parse(byte[] data)
{
List <string> lines = GetLines(data);
if (lines == null || lines.Count == 0)
{
return(null);
}
Messages.MessageBase result = GetDiscoveryMessage(lines);
if (result == null)
{
result = GetNotifyMessage(lines);
}
if (result == null)
{
result = GetHttpMessage(lines);
}
if (result == null)
{
return(null);
}
CompleteMessage(result, lines);
return(result);
}
private bool GetServiceType(Messages.MessageBase message, string header, List <string> lines)
{
string tmp = GetValue(lines, header);
if (string.IsNullOrEmpty(tmp))
{
return(false);
}
message.Service.ServiceType = tmp;
return(true);
}
private bool GetServiceName(Messages.MessageBase message, List <string> lines)
{
string tmp = GetValue(lines, Headers.ServiceName);
if (string.IsNullOrEmpty(tmp))
{
return(false);
}
message.Service.UniqueServiceName = tmp;
return(true);
}
private void GetHost(List <string> lines, Messages.MessageBase message)
{
string tmp = GetValue(lines, "host");
if (string.IsNullOrEmpty(tmp))
{
return;
}
int i = tmp.IndexOf(":");
if (i >= 0)
{
message.Port = int.Parse(tmp.Substring(i + 1));
message.Host = tmp.Substring(0, i);
}
else
{
message.Host = tmp;
}
}
private Messages.MessageBase GetNotifyMessage(List <string> lines)
{
if (lines[0].ToUpper() != "NOTIFY * HTTP/1.1")
{
return(null);
}
lines.RemoveAt(0);
Messages.MessageBase result = null;
string tmp = GetValue(lines, Headers.NotificationType);
if (tmp.Equals("ssdp:alive", StringComparison.InvariantCultureIgnoreCase))
{
result = GetAliveMessage(lines);
}
else if (tmp.Equals("ssdp:byebye", StringComparison.InvariantCultureIgnoreCase))
{
result = GetByeMessage(lines);
}
else
{
return(null);
}
if (!GetServiceType(result, Discovery.SSDP.Headers.NotifiedServiceType, lines))
{
return(null);
}
if (!GetServiceName(result, lines))
{
return(null);
}
GetHost(lines, result);
return(result);
}