| udp_recv() | ||
|---|---|---|
 | 166.10. UDP interface |  |
Name
udp_recv() — Set callback for incoming UDP data
Synopsis
void udp_recv
(struct udp_pcb *pcb
, err_t (*recv)
(void *arg, struct udp_pcb *upcb, struct pbuf *p, struct ip_addr *addr, u16_t port)
, void *recv_arg
);
Description
Registers a callback function recv with the PCB
pcb so that when a UDP datagram is received, the
callback is invoked. The callback argument arg
is set as the argument recv_arg to
udp_recv(). The received datagram packet buffer
is held in p. The source address of the
datagram is provided in addr, and the source
port in port. The callback is expected to
free the packet.
| |  | |
| udp_send() |  | Chapter 167. Debug and Test |
| 2025-10-02 | LWIP Documentation Notices |