How do I use a domain socket in Unix?

To create a UNIX domain socket, use the socket function and specify AF_UNIX as the domain for the socket. The z/TPF system supports a maximum number of 16,383 active UNIX domain sockets at any time. After a UNIX domain socket is created, you must bind the socket to a unique file path by using the bind function.

What is Unix domain socket path?

UNIX domain sockets are named with UNIX paths. For example, a socket might be named /tmp/foo. UNIX domain sockets communicate only between processes on a single host.

How is a UNIX domain socket structure address is represented?

Address format A UNIX domain socket address is represented in the following structure: struct sockaddr_un { sa_family_t sun_family; /* AF_UNIX */ char sun_path[108]; /* Pathname */ }; The sun_family field always contains AF_UNIX. On Linux, sun_path is 108 bytes in size; see also NOTES, below.

How do I use a domain socket?

Here are the steps:

1. Call socket() to get a Unix domain socket to communicate through.
2. Set up a struct sockaddr_un with the remote address (where the server is listening) and call connect() with that as an argument.
3. Assuming no errors, you’re connected to the remote side! Use send() and recv() to your heart’s content!

How do I specify a domain to a socket?

After a socket is created, it can be given a name according to the rules of the communication domain in which it was created. For example, in the UNIX communication domain, sockets are named with operating system path names. A socket can be named /dev/foo.

How do I find my domain name Unix?

Both Linux / UNIX comes with the following utilities to display hostname / domain name:

1. a) hostname – show or set the system’s host name.
2. b) domainname – show or set the system’s NIS/YP domain name.
3. c) dnsdomainname – show the system’s DNS domain name.
4. d) nisdomainname – show or set system’s NIS/YP domain name.

What is socket address in Linux?

Various structures are used in Unix Socket Programming to hold information about the address and port, and other information. Most socket functions require a pointer to a socket address structure as an argument. Structures defined in this chapter are related to Internet Protocol Family.