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LEA mDNS v2 (#7540)

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* LEAmDNSv2
This commit is contained in:
Labor-Et-Ars
2020-09-25 11:12:39 +02:00
committed by GitHub
parent faf59f5190
commit a3281fe2f3
39 changed files with 12359 additions and 1846 deletions
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70
libraries/ESP8266WiFi/src/include/UdpContext.h
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@ -30,6 +30,7 @@ void esp_schedule();
}
#include <AddrList.h>
#include <PolledTimeout.h>
#define PBUF_ALIGNER_ADJUST 4
#define PBUF_ALIGNER(x) ((void*)((((intptr_t)(x))+3)&~3))
@ -390,14 +391,39 @@ public:
return size;
}
void cancelBuffer ()
{
if (_tx_buf_head)
pbuf_free(_tx_buf_head);
_tx_buf_head = 0;
_tx_buf_cur = 0;
_tx_buf_offset = 0;
}
bool send(const ip_addr_t* addr = 0, uint16_t port = 0)
{
return trySend(addr, port, /* don't keep buffer */false) == ERR_OK;
}
bool sendTimeout(const ip_addr_t* addr, uint16_t port,
esp8266::polledTimeout::oneShotFastMs::timeType timeoutMs)
{
err_t err;
esp8266::polledTimeout::oneShotFastMs timeout(timeoutMs);
while (((err = trySend(addr, port, /* keep buffer on error */true)) != ERR_OK) && !timeout)
delay(0);
if (err != ERR_OK)
cancelBuffer(); // get rid of buffer kept on error after timeout
return err == ERR_OK;
}
private:
err_t trySend(const ip_addr_t* addr, uint16_t port, bool keepBufferOnError)
{
size_t data_size = _tx_buf_offset;
pbuf* tx_copy = pbuf_alloc(PBUF_TRANSPORT, data_size, PBUF_RAM);
if(!tx_copy){
DEBUGV("failed pbuf_alloc");
}
else{
if (tx_copy) {
uint8_t* dst = reinterpret_cast<uint8_t*>(tx_copy->payload);
for (pbuf* p = _tx_buf_head; p; p = p->next) {
size_t will_copy = (data_size < p->len) ? data_size : p->len;
@ -406,38 +432,32 @@ public:
data_size -= will_copy;
}
}
if (_tx_buf_head)
pbuf_free(_tx_buf_head);
_tx_buf_head = 0;
_tx_buf_cur = 0;
_tx_buf_offset = 0;
if(!tx_copy){
return false;
}
if (!keepBufferOnError)
cancelBuffer();
if (!tx_copy){
DEBUGV("failed pbuf_alloc");
return ERR_MEM;
}
if (!addr) {
addr = &_pcb->remote_ip;
port = _pcb->remote_port;
}
#ifdef LWIP_MAYBE_XCC
uint16_t old_ttl = _pcb->ttl;
if (ip_addr_ismulticast(addr)) {
_pcb->ttl = _mcast_ttl;
}
#endif
err_t err = udp_sendto(_pcb, tx_copy, addr, port);
if (err != ERR_OK) {
DEBUGV(":ust rc=%d\r\n", (int) err);
}
#ifdef LWIP_MAYBE_XCC
_pcb->ttl = old_ttl;
#endif
pbuf_free(tx_copy);
return err == ERR_OK;
}
private:
pbuf_free(tx_copy);
if (err == ERR_OK)
cancelBuffer(); // no error: get rid of buffer
return err;
}
size_t _processSize (const pbuf* pb)
{