Getting information through TCP stream graphs – window-scaling window

The window-scaling graph of the TCP stream graphs enables us to look at the window size published by the receiving side, which is an indication of the ability of the receiver to process data. Along with the other graphs, it provides us with a look at the performance of the connection.

Getting ready

Open an existing capture, or start a new capture. Click on a specific packet in the capture file. Even though you can use this feature on a running capture, it is not meant for online statistics, so it is recommended that you start a capture, stop it, and then use this tool.

How to do it...

To view TCP stream graph statistics, go through the following steps:

1. Click on a packet on the stream you want to monitor.
2. From the Statistics menu, choose TCP Stream Graph | Window Scaling Graph.
3. The following window will be opened:

In this graph, we can see instability, caused by one of the sides. This can be an indication of a slow server or client...