Hi Martin,

I've got some issues with the web API. We're using it frequently (both for tally as via our own control software) and sometimes it's doesn't respond after a while.

I'll try to investigate (probably I do something wrong with the API commands) however I didn't succeed. There is no pattern I can discover. Not in time, not in the data (read: kind of requests).

I digged into the log files and see two patterns:

pattern 1:
========================================
11.0.0.66 - CONNECTION ERROR - 16-1-2014 14:07:41
========================================
System.IO.IOException: Unable to read data from the transport connection: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
--- End of inner exception stack trace ---
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.IO.StreamReader.ReadBuffer()
at System.IO.StreamReader.ReadLine()
at szzzzy.n()
at szzzzy.h()
at fi.g(Object a)
========================================
11.0.0.66 - CONNECTION ERROR - 16-1-2014 14:08:41
========================================
System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.2.50:554
at System.Net.Sockets.TcpClient.Connect(String hostname, Int32 port)
at szzzzy..ctor(Uri a)
at fi.e(StreamType a, String a)
at fi.g(Object a)
========================================
11.0.0.66 - CONNECTION ERROR - 16-1-2014 14:11:41
========================================
System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.2.50:554
at System.Net.Sockets.TcpClient.Connect(String hostname, Int32 port)
at szzzzy..ctor(Uri a)
at fi.e(StreamType a, String a)
at fi.g(Object a)


pattern 2:
========================================
11.0.0.63 - ERROR - 30-12-2013 22:21:04
========================================
System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'System.Net.Sockets.Socket'.
at System.Net.Sockets.Socket.Send(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags, SocketError& errorCode)
at System.Net.Sockets.Socket.Send(Byte[] buffer)
at vMix.SimpleProtocol.h(String a)
at vMix.SimpleProtocol.e(SimpleProtocolArgs a)
at ev.h()
========================================
11.0.0.63 - ERROR - 30-12-2013 22:24:06
========================================
System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.1.6:20555
at System.Net.Sockets.TcpClient.Connect(String hostname, Int32 port)
at vMix.SimpleProtocol..ctor(String hostName, Int32 port)
at ev.e()
at ev.f()
at ev.h()
========================================
11.0.0.63 - ERROR - 30-12-2013 22:25:24
========================================
System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.1.6:20555
at System.Net.Sockets.TcpClient.Connect(String hostname, Int32 port)
at vMix.SimpleProtocol..ctor(String hostName, Int32 port)
at ev.e()
at ev.f()
at ev.h()

As you can see the version numbers differ. Do you have any ideas? Is it a bug in vMix or do I something wrong?

For your information, our own control software runs on a different machine (connected via gigabit LAN).

When I change the port number in vMix and uncheck/check 'Enabled', it works fine on the new port number (since I can't restart vMix during a session).

Regards,
Hanno.