Where can I find the details of pserver protocol?
The doc/cvsclient.texi file distributed with CVS may be run through makeinfo or texi2html to convert it into many different formats including GNU Info, HTML, and PDF. The GNU Info version is also distributed with CVS, as doc/cvsclient.info* There is an HTML version online at http://www.elegosoft.com/cvs/cvsclient.html.