private void HalfConnect(string sessionId, RegistrationResponse response)
{
if (response == null)
{
throw new ArgumentNullException("response");
}
response.Success = false;
string clientIP = GetClientIP(OperationContext.Current);
if (String.IsNullOrEmpty(clientIP))
{
response.Description = "Could not determine source IP address.";
}
else
{
// Send half-connect to relay
if (RelayConnected)
{
var connectResponse = relay.Proxy.HalfConnect(sessionId, clientIP);
if (connectResponse.Result == RelayConnectResponse.ResultCode.Success)
{
response.Success = true;
response.RelayIPAddress = connectResponse.IPAddress;
response.RelayPort = connectResponse.Port;
}
else
{
response.Description = connectResponse.Description;
if (DebugLog != null)
{
DebugLog.Write(TraceLevel.Warning, "Relay half-connect failed: " + response.Description);
}
}
}
else
{
response.Description = "No relay services are available. Contact support for assistance.";
}
}
}
public RegistrationResponse Register(RegistrationRequest request)
{
RegistrationResponse response = new RegistrationResponse();
if (String.IsNullOrEmpty(request.ComputerName) ||
String.IsNullOrEmpty(request.GroupID) ||
String.IsNullOrEmpty(request.StickID))
{
response.Success = false;
response.Description = "Incomplete registration request.";
return(response);
}
UserAccount account = null;
try
{
account = data.Accounts.Include(acct => acct.Registrations).FirstOrDefault(acct => acct.GroupID == request.GroupID);
}
catch (Exception e)
{
if (DebugLog != null)
{
while (e.InnerException != null)
{
DebugLog.Write(TraceLevel.Error, "Database error: " + e.Message);
e = e.InnerException;
}
}
response.Success = false;
response.Description = "A database error occurred while processing your registration. Please contact technical support.";
return(response);
}
if (account != null)
{
if (DebugLog != null)
{
DebugLog.Write(TraceLevel.Info, String.Format("Registering endpoint {0}[{1}] for {2}[{3}] {4} relay", request.ComputerName, request.StickID, account.UserName, account.GroupID, request.RequireRelay ? "force" : "no"));
}
ServerEndPoint serverEP =
account.Registrations.FirstOrDefault(reg => reg.ComputerName == request.ComputerName);
if (serverEP != null)
{
account.Registrations.Remove(serverEP);
}
string sessionId = Guid.NewGuid().ToString();
if (request.RequireRelay)
{
HalfConnect(sessionId, response);
if (response.Success)
{
account.Registrations.Add(new ServerEndPoint
{
StickId = request.StickID,
SessionId = sessionId,
ComputerName = request.ComputerName,
IPAddress = null,
Port = 0,
RequireRelay = true,
RegistrationTime = DateTime.Now
});
data.SaveChanges();
}
}
else if (request.Port <= 0)
{
response.Success = false;
response.Description = "A valid listen port must be specified if relay is not requested.";
}
else
{
string clientIP = GetClientIP(OperationContext.Current);
if (!String.IsNullOrEmpty(clientIP))
{
account.Registrations.Add(new ServerEndPoint
{
SessionId = sessionId,
ComputerName = request.ComputerName,
IPAddress = clientIP,
Port = request.Port,
RequireRelay = false,
RegistrationTime = DateTime.Now
});
data.SaveChanges();
response.Success = true;
}
else
{
response.Description = "Could not determine source IP address.";
}
}
}
else
{
response.Success = false;
response.Description = "Group ID not found.";
}
return(response);
}