From da49924c228ea71abd3f71fa94737953dd763b53 Mon Sep 17 00:00:00 2001
From: Manuel Schneider
Date: Mon, 21 Jul 2014 23:37:48 +0200
Subject: Finally implemented one click projectionsource change

Prevent the new projectionsource from beeing killed by stop clients wrt the connections
---
 src/server/mainwindow/mainwindow.cpp | 47 ++++++++++++++++++++++--------------
 1 file changed, 29 insertions(+), 18 deletions(-)

(limited to 'src/server/mainwindow/mainwindow.cpp')

diff --git a/src/server/mainwindow/mainwindow.cpp b/src/server/mainwindow/mainwindow.cpp
index c78f8de..9dee65b 100644
--- a/src/server/mainwindow/mainwindow.cpp
+++ b/src/server/mainwindow/mainwindow.cpp
@@ -1117,29 +1117,40 @@ void MainWindow::onVncServerStateChange(Client* client)
  */
 void MainWindow::onVncClientStateChange(Client* client)
 {
-	if (client != NULL)
+    if (client != NULL)
 	{
 		// VNC Client stopped -> remove from watchers
-		if (!client->isActiveVncClient()){
-			// _watchers.remove(client->id());
+        if (!client->isActiveVncClient()){
 			if (getClientFromId(client->id()) != NULL)
 				getClientFromId(client->id())->setWatcher(false);
 
-			// If noboody is watching the multicast stop VNC server
-			bool noWatchers = true;
-			for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
-			{
-				if ((*it)->client() != NULL)
-				{
-					if ((*it)->client()->isWatcher())
-						noWatchers = false;
-				}
-			}
-			if (noWatchers && _mode != Mode::Broadcast)
-			{
-				Client* c = getClientFromId(_streamingSource);
-                if (c != NULL)
-                    c->stopVncServer();
+            /*
+             * If noboody is watching the multicast stop VNC server
+             * If the past connection of this client is not the current
+             * _streamingSource then the manager has to have stopped it
+             * already. This is necessary for the race condition when a server
+             * is stopped and another started at the same time, since the new
+             * server would be killed if all client disconnect before any of
+             * the new connect.
+             */
+            if (client->projectionSource() == _streamingSource)
+            {
+                bool noWatchers = true;
+                for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin());
+                     it != _clientFrames.end(); ++it)
+                {
+                    if ((*it)->client() != NULL)
+                    {
+                        if ((*it)->client()->isWatcher())
+                            noWatchers = false;
+                    }
+                }
+                if (noWatchers && _mode != Mode::Broadcast)
+                {
+                    Client* c = getClientFromId(_streamingSource);
+                    if (c != NULL)
+                        c->stopVncServer();
+                }
 			}
 		}
 	}
-- 
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