Delphi for .NET Developer’s Guide

Tracing Messages

When developing distributed applications, it’s often useful to see what goes across the wire. By seeing the size of the data packets, their contents, and so on, you will gather a better understanding of the technology you are using and be in a better position to understand what is going wrong if problems occur.

Tip

There are different ways to do it, but the simplest is probably to use a packet capture tool such as tcpTrace.

You can download this free utility from www.pocketsoap.com.

tcpTrace captures TCP packets sent by client applications over a certain port, displays them in a window, and then forwards them to a specified destination. Once the destination receives and processes the packet, tcpTrace captures the response and ...