This paper has analysed some important concept in UNIX socket programing. These concepts touch upon socket creating, transport layer port, protocol address, socket function call, etc.

There are several other ways of initiating IPC using ACE, like shared memory or UNIX-style socket addressing (the ACE_LSOCK* group of classes), which this article does not address.

Client processes communicate with the pseudo daemon through a UNIX-domain socket (that's a socket in the file system) rather than using TCP or UDP.