/// <summary>
/// Runs server thread.
/// Perform server polling for new requests.
/// </summary>
private void Run()
{
Debug.WriteLine("Starting Server Thread with ID: " + serverIndex + " at " + DateTime.Now.ToString());
Http http = new Http(serverIndex);
while (settings.Servers[serverIndex].Cookie == null)
{
Thread.Sleep(1000);
}
while (true)
{
bool receiveNow = false;
lock (thisLock)
{
receiveNow = (queues.Values.Count > 0);
}
// nothing to do - wait
if (!receiveNow)
{
Thread.Sleep(http.fetchMessageTimeoutRetryDelay);
continue;
}
else
{
// TODO: Handle situation when network is down
Debug.WriteLine("Entering FetchMessage at " + DateTime.Now.ToString());
ServerResponse sr = http.FetchMessage(settings.Servers[serverIndex].InstanceId, settings.Servers[serverIndex].Cookie, settings.Servers[serverIndex].LastMessageId);
// check if message is valid
if (sr.token == null)
{
Debug.WriteLine("Skipped message with empty token");
continue;
}
OutgoingMessage om = new OutgoingMessage {
Action = "Received", Id = sr.id, Token = sr.token, Data = JsonConvert.SerializeObject(sr.data)
};
Debug.WriteLine("Entering send message at " + DateTime.Now.ToString());
int currentReaders = 0;
string path;
string args;
lock (thisLock)
{
try
{
AppInfo ai = settings.Servers[serverIndex].Queues.First(queue => queue.Token.Equals(om.Token));
if (queues.ContainsKey(ai.GetKey()))
{
P2PMessageQueue q = queues[ai.GetKey()];
currentReaders = q.CurrentReaders;
path = ai.Path;
args = ai.Args;
}
else
{
Debug.WriteLine("Skipped: " + om.Id + ", " + om.Token);
continue;
}
}
catch (InvalidOperationException)
{
Debug.WriteLine("Skipped: " + om.Id + ", " + om.Token);
continue;
}
}
// if no readers - start the app and make sure that Ai is still valid
bool messageSkipped = false;
if (currentReaders == 0)
{
Process.Start(path, args);
while (currentReaders == 0)
{
Thread.Sleep(10000);
lock (thisLock) {
try
{
AppInfo ai = settings.Servers[serverIndex].Queues.First(queue => queue.Token.Equals(om.Token));
if (queues.ContainsKey(ai.GetKey()))
{
P2PMessageQueue q = queues[ai.GetKey()];
currentReaders = q.CurrentReaders;
}
else
{
Debug.WriteLine("Skipped: " + om.Id + ", " + om.Token);
messageSkipped = true;
break;
}
}
catch (InvalidOperationException)
{
Debug.WriteLine("Skipped: " + om.Id + ", " + om.Token);
messageSkipped = true;
break;
}
}
}
if (messageSkipped)
{
continue;
}
// give a chance for the client app to fully initialize
Thread.Sleep(10000);
}
// send the message
lock (thisLock)
{
try
{
AppInfo ai = settings.Servers[serverIndex].Queues.First(queue => queue.Token.Equals(om.Token));
if (queues.ContainsKey(ai.GetKey()))
{
P2PMessageQueue q = queues[ai.GetKey()];
string data = JsonConvert.SerializeObject(om);
Message message = new Message(Encoding.UTF8.GetBytes(data), false);
Debug.WriteLine("About to send message at " + DateTime.Now.ToString());
ReadWriteResult result = q.Send(message, 0);
// If message delivered save its id
// TODO: Verify client responce to ensure message is readed
if (result == ReadWriteResult.OK)
{
settings.Servers[serverIndex].LastMessageId = sr.id;
Settings.Save(settings);
}
else
{
Debug.WriteLine("Skipped: " + om.Id + ", " + om.Token + ", result of Send is : " + result.ToString());
}
Debug.WriteLine("Delivered: " + ai.GetKey() + ", " + data + " at " + DateTime.Now.ToString());
}
else
{
Debug.WriteLine("Skipped: " + om.Id + ", " + om.Token);
}
}
catch (InvalidOperationException)
{
Debug.WriteLine("Skipped: " + om.Id + ", " + om.Token);
}
}
}
}
}
