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SourceVuESP-IDF Framework and Examplesesp_local_ctrl sample_mdns_udp_pcb_write()

_mdns_udp_pcb_write() function

send packet over UDP

Syntax

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Summary

Declaration

Definition

from mdns_networking.h:43

size_t _mdns_udp_pcb_write(mdns_if_t tcpip_if, mdns_ip_protocol_t ip_protocol, const esp_ip_addr_t *ip, uint16_t port, uint8_t *data, size_t len);

Implemented in mdns_networking_lwip.c:348

Arguments

Argument

Description

tcpip_if

ip_protocol

port

data

byte array containing the packet data

len

length of the packet data

Return value

length of sent packet or 0 on error

References

Code

Location

Referrer

size_t _mdns_udp_pcb_write(mdns_if_t tcpip_if, mdns_ip_protocol_t ip_protocol, const esp_ip_addr_t *ip, uint16_t port, uint8_t *data, size_t len)

mdns_networking_lwip.c:348

size_t _mdns_udp_pcb_write(mdns_if_t tcpip_if, mdns_ip_protocol_t ip_protocol, const esp_ip_addr_t *ip, uint16_t port, uint8_t *data, size_t len);

mdns_networking.h:43

_mdns_udp_pcb_write(p->tcpip_if, p->ip_protocol, &p->dst, p->port, packet, index);

mdns.c:1551

_mdns_dispatch_tx_packet()

_mdns_udp_pcb_write(packet->tcpip_if, packet->ip_protocol, &packet->dst, packet->port, pkt, index);

mdns.c:2440

_mdns_send_bye_subtype()

Call Tree

_mdns_udp_pcb_write() is called by 2 functions and calls 2 functions:

_mdns_dispatch_tx_packet()

_mdns_send_bye_subtype()

_mdns_udp_pcb_write()

pbuf_alloc()

tcpip_api_call()

Data Use

_mdns_udp_pcb_write() reads 8 variables and writes 1 variable:

ip_addr::u_addr

pbuf_type::PBUF_RAM

pbuf::payload

pbuf_layer::PBUF_TRANSPORT

_ip_addr::u_addr

_ip_addr::type

mdns_api_call_t::err

_mdns_udp_pcb_write_api()

_mdns_udp_pcb_write()

ip_addr::type

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