IPTV applications have become more and more popular over the last few years, while more and more TV stations are moving to the Internet. E-learning applications are also more popular along with various types of other applications.
Basically, IPTV applications use TCP, and the problems you will face are mostly TCP problems, such as retransmissions. In this recipe we will see some examples.
When getting complaints about quality of video, freezes, and so on, connect the instance of Wireshark that has a port mirror to the device or the link that connects you to the network.
Start the capture and go through these steps:
From the network point of view, IPTV is not more than a simple application that runs over a TCP connection.
When troubleshooting problems on it, go through the regular TCP troubleshooting procedures described in Chapter 9, UDP/TCP Analysis.
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