lorem ipsem dolor. This is intended to be representative of the "chapter introductions" that appear at the start of each chapter of an O'Reilly Cookbook
and give general guidance and an introduction to the chapter.
Choose Your Protocol Wisely
While Java makes it easy to create network connections on any protocol, experience shows that HTTP (and HTTPS) are the most universal.
If you use a custom protocol talking to your own server, there are some
users who will not be able to access your server. Bear in mind that in
some countries, high-speed data (aka 3G) is either not yet available or
is very expensive, whereas GPRS/EDGE is less expensive and more widely
available. Most GPRS service providers only allow HTTP/HTTPS connections,
often through a WAP proxy. That said, there may be things you need to do that
can't be done via HTTP, for example because their protocol demands a different port number (SIP over port 5000, for example). But do try to make HTTP your first choice when you can - you'll include more customers.