Hi there! Is there such a thing as a traffic/protocol analyzer for X11? I have a self-written application (using the old XView toolkit), and under certain circumstances some dialogs do not react. I had this 2 years ago under KDE 3.5, and some people now experience the same when SSH'ing from an OS X machine into openSUSE or into my gentoo machine. I'd like to see what is going on there.
A web search only found Xmon, but with most download links being dead, even on sourceforge [1] there is nothing to download. But I finally found a working download link on ubuntu.com [2]. The package does not compile, but I only had to comment out one line. According to the man page, the command 'xmonui | xmond' would create another X server (localhost:1), and I would set the DISPLAY variable to this when starting my application. xmond will use localhost:0, that is, the real X server, to display my application, but it will output all X traffic. So it is sort of a proxy to the real server. Alas, it does not work, I get a 'Can't open display' error, and xmond outputs 'Can't open connection to Server (ECONNREFUSED)'. Any other ideas? Wonko [1] http://sourceforge.net/projects/xmon/ [2] http://packages.ubuntu.com/hardy/xmon