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+PR_NewUDPSocket
+===============
+
+Creates a new UDP socket.
+
+
+Syntax
+------
+
+.. code::
+
+   #include <prio.h>
+
+   PRFileDesc* PR_NewUDPSocket(void);
+
+
+Returns
+~~~~~~~
+
+The function returns one of the following values:
+
+-  Upon successful completion, a pointer to the :ref:`PRFileDesc` object
+   created for the newly opened UDP socket.
+-  If the creation of a new UDP socket failed, ``NULL``.
+
+
+Description
+-----------
+
+UDP (User Datagram Protocol) is a connectionless, unreliable datagram
+protocol of the TCP/IP protocol suite. UDP datagrams may be lost or
+delivered in duplicates or out of sequence.
+
+:ref:`PR_NewUDPSocket` creates a new UDP socket. The socket may be bound to
+a well-known port number with :ref:`PR_Bind`. Datagrams can be sent with
+:ref:`PR_SendTo` and received with :ref:`PR_RecvFrom`. When the socket is no
+longer needed, it should be closed with a call to :ref:`PR_Close`.
+
+
+See Also
+--------
+
+:ref:`PR_NewUDPSocket` is deprecated because it is hardcoded to create an
+IPv4 UDP socket. New code should use :ref:`PR_OpenUDPSocket` instead, which
+allows the address family (IPv4 or IPv6) of the new UDP socket to be
+specified.