apr_socket_t *
create_mcast_server(apr_pool_t *context, int32_t family, char *mcast_ip, apr_port_t port, char *bind_addr, char *interface)
{
apr_status_t status = APR_SUCCESS;
/* NOTE: If bind is set to mcast_ip in the configuration file, then we will bind the
* the multicast address to the socket as well as the port and prevent any
* datagrams that might be delivered to this port from being processed. Otherwise,
* packets destined to the same port (but a different multicast/unicast channel) will be
* processed. */
apr_socket_t *socket = create_udp_server(context, family, port, bind_addr);
if(!socket)
{
return NULL;
}
/* TODO: We can probe for a list of interfaces and perform multiple join calls for the same
* socket to have it listen for multicast traffic on all interfaces (important for
* multihomed machines). */
if(interface && !apr_strnatcasecmp(interface, "ALL"))
{
/* for(each interface)
* {
* join_mcast(...);
* }
*/
}
else
{
status = join_mcast(context, socket, mcast_ip, port, interface );
}
return status == APR_SUCCESS? socket: NULL;
}
static void udp_conn(void *pvParameters) {
ESP_LOGI(TAG, "task udp_conn start... \n\r");
//等待是否已经成功连接到路由器的标志位
xEventGroupWaitBits(udp_event_group, WIFI_CONNECTED_BIT, false, true,
portMAX_DELAY);
ESP_LOGI(TAG,
"esp32 is ready !!! create udp client or connect servece after 5s... \n\r");
vTaskDelay(5000 / portTICK_RATE_MS);
//创建客户端并且检查是否创建成功
#if Server_Station_Option
ESP_LOGI(TAG, "Now Let us create udp server ... \n\r");
if (create_udp_server() == ESP_FAIL) {
ESP_LOGI(TAG, " server create socket error , stop !!! \n\r");
vTaskDelete(NULL);
} else {
ESP_LOGI(TAG, "server create socket Succeed !!! \n\r");
}
#else
ESP_LOGI(TAG, "Now Let us create udp client ... \n\r");
if (create_udp_client() == ESP_FAIL) {
ESP_LOGI(TAG, "client create socket error , stop !!! \n\r");
vTaskDelete(NULL);
} else {
ESP_LOGI(TAG, "client create socket Succeed !!! \n\r");
}
#endif
//创建一个发送和接收数据的任务
TaskHandle_t tx_rx_task;
xTaskCreate(&send_recv_data, "send_recv_data", 4096, NULL, 4, &tx_rx_task);
//等待 UDP连接成功标志位
xEventGroupWaitBits(udp_event_group, UDP_CONNCETED_SUCCESS, false, true,
portMAX_DELAY);
int bps;
char sendBuff[1024] = "hello xuhong,I am from Esp32 ...";
while (1) {
total_data = 0;
vTaskDelay(3000 / portTICK_RATE_MS);
//时隔三秒发送一次数据
#if !Server_Station_Option
send_Buff_with_UDP(sendBuff, 1024);
#endif
bps = total_data / 3;
if (total_data <= 0) {
int err_ret = check_connected_socket();
if (err_ret == -1) {
ESP_LOGW(TAG,
"udp send & recv stop !!! will close socket ... \n\r");
close_socket();
break;
}
}
ESP_LOGI(TAG, "udp recv %d byte per sec! total pack: %d \n\r", bps,
success_pack);
}
vTaskDelete(tx_rx_task);
vTaskDelete(NULL);
}