event/ServerSocket, doc, ...: refer to AF_LOCAL as "local socket"

.. and not "UNIX domain socket.  Be consistent about the naming.

src/config/Net.hxx

@@ -23,14 +23,14 @@
 class ServerSocket;
 
 /**
- * Sets the address or unix socket of a ServerSocket instance
+ * Sets the address or local socket of a ServerSocket instance
  * There are three possible ways
  * 1) Set address to a valid ip address and specify port.
  *    server_socket will listen on this address/port tuple.
  * 2) Set address to null and specify port.
  *    server_socket will listen on ANY address on that port.
- * 3) Set address to a path of a unix socket. port is ignored.
- *    server_socket will listen on this unix socket.
+ * 3) Set address to a path of a local socket. port is ignored.
+ *    server_socket will listen on this local socket.
  *
  * Throws #std::runtime_error on error.
  *

src/event/ServerSocket.cxx

@@ -392,7 +392,7 @@ ServerSocket::AddPath(AllocatedPath &&path)
 #else /* !HAVE_UN */
 	(void)path;
 
-	throw std::runtime_error("UNIX domain socket support is disabled");
+	throw std::runtime_error("Local socket support is disabled");
 #endif /* !HAVE_UN */
 }
 

src/event/ServerSocket.hxx

@@ -90,7 +90,7 @@ public:
 	void AddHost(const char *hostname, unsigned port);
 
 	/**
-	 * Add a listener on a Unix domain socket.
+	 * Add a listener on a local socket.
 	 *
 	 * Throws #std::runtime_error on error.
 	 *

src/net/SocketUtil.cxx

@@ -35,7 +35,7 @@ socket_bind_listen(int domain, int type, int protocol,
 		throw MakeSocketError("Failed to create socket");
 
 #ifdef HAVE_UN
-	if (domain == AF_UNIX) {
+	if (domain == AF_LOCAL) {
 		/* Prevent access until right permissions are set */
 		fchmod(fd.Get(), 0);
 	}

src/net/SocketUtil.hxx

@@ -32,7 +32,7 @@ class SocketAddress;
 /**
  * Creates a socket listening on the specified address.  This is a
  * shortcut for socket(), bind() and listen().
- * When a unix socket is created (domain == AF_UNIX), its
+ * When a local socket is created (domain == AF_LOCAL), its
  * permissions will be stripped down to prevent unauthorized
  * access. The caller is responsible to apply proper permissions
  * at a later point.

src/net/ToString.cxx

@@ -106,7 +106,7 @@ ToString(SocketAddress address) noexcept
 {
 #ifdef HAVE_UN
 	if (address.GetFamily() == AF_LOCAL)
-		/* return path of UNIX domain sockets */
+		/* return path of local socket */
 		return LocalAddressToString(*(const sockaddr_un *)address.GetAddress(),
 					    address.GetSize());
 #endif