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