User guide

Viz Engine Administrator’s Guide
Copyright © 2014 Vizrt Page 137
Note: The default maximum number of TCP connections is limited to 255. Within
this number of connections a User defined limit of maximum connections can be
set (see To limit the number of TCP connections)
IMPORTANT! The external program which provides the data, must connect
and send the data to each Viz Engine individually. Vizrt provides a C# library,
SendToSMM (part of the Viz install), for this purpose.
To use TCP for SHM
1. Go to the Configuring Viz.
2. Click on Communication.
3. Click on the Shared Memory tab.
4. In the Shared Memory panel set these parameters:
TCP Port: Vizrt does not recommend a specific port. Always make sure that
the selected port is not in use by any other program on the same subnet.
5. Click Save.
The syntax for the key-value pairs is:
key|value\0
Multiple key-value pairs can be sent, at once, as well. To do this make sure that each
pair is terminated with 0.
key1|value1\0key2|value2\0key...
See Also
UDP Protocol
Plugin API
Command Interface
9.1.2 UDP Protocol
The SHM UDP communication protocol should be used for the delivery of volatile data.
It is quicker than the TCP Protocol protocol, but less reliable, and is much more efficient
than the Command Interface.
A use case for UDP would be Motor Sports, where data like speed, velocity, etc., is
required. This is where there is a requirement to deal with large amounts of data, but