UDP packet loss when transimitt video
Posted: Wed Feb 15, 2017 8:39 am
Hi!
The following is my code:
I use Wifi LAN for transmission.According my test，UDP packet loss is very serious.I would like to ask what is the cause of UDP packet loss serious.What advice do you have for video transmission using ESP32.Faster transmission requirements.And is there sample code for transmitting video via wifi.
The following is my code:
Code: Select all
static void udp_thread(void *p)
{
int i = 0;
int sock;
struct sockaddr_in toAddr;
xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, false, true, portMAX_DELAY);
LWIP_UNUSED_ARG(p);
sock = socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP);
if(sock < 0)
{
ESP_LOGI(TAG, "socket err");
}
memset(&toAddr,0,sizeof(toAddr));
toAddr.sin_family=AF_INET;
toAddr.sin_addr.s_addr=inet_addr("192.168.10.9");
toAddr.sin_port = htons(REMOTE_PORT);
while(1)
{
sendto(sock,start,SEND_START_LEN,0,(struct sockaddr*)&toAddr,sizeof(toAddr));
for(i=0; i<240; i++)
{
sendto(sock,image1+i*480,SEND_BUF_LEN,0,(struct sockaddr*)&toAddr,sizeof(toAddr));
}
sendto(sock,end,SEND_END_LEN,0,(struct sockaddr*)&toAddr,sizeof(toAddr));
}
close(sock);
vTaskDelete(NULL);
}