registerSocketCallback

Functions
NMI_API void	registerSocketCallback (tpfAppSocketCb socket_cb, tpfAppResolveCb resolve_cb)

Detailed Description

Register two callback functions one for asynchronous socket events and the other one for DNS callback registering function. The registered callback functions are used to retrieve information in response to the asynchronous socket functions called.

Function Documentation

registerSocketCallback()

NMI_API void registerSocketCallback	(	tpfAppSocketCb	socket_cb,
		tpfAppResolveCb	resolve_cb
	)

Parameters

[in]	tpfAppSocketCb	Assignment of callback function to the global callback tpfAppSocketCb gpfAppSocketCb. Delivers socket messages to the host application. In response to the asynchronous function calls, such as bind listen accept connect
[in]	tpfAppResolveCb	Assignment of callback function to the global callback tpfAppResolveCb gpfAppResolveCb. Used for DNS resolving functionalities. The DNS resolving technique is determined by the application registering the callback. NULL is assigned when, DNS resolution is not required.

Returns

void

Remarks

If any of the socket functionalities is not to be used, NULL is passed in as a parameter. It must be invoked after socketinit and before other socket layer operations.

Example

This example demonstrates the use of the registerSocketCallback to register a socket callback function with DNS resolution CB set to null for a simple UDP server example.

 tstrWifiInitParam param;
int8_t ret;
struct sockaddr_in addr;

// Initialize the board
system_init();

//Initialize the UART console. 
configure_console();

// Initialize the BSP.
nm_bsp_init();

// Initialize socket address structure.
addr.sin_family = AF_INET;
addr.sin_port = _htons(MAIN_WIFI_M2M_SERVER_PORT);
addr.sin_addr.s_addr = _htonl(MAIN_WIFI_M2M_SERVER_IP);

// Initialize Wi-Fi parameters structure. 
memset((uint8_t *)&param, 0, sizeof(tstrWifiInitParam));

// Initialize Wi-Fi driver with data and status callbacks.
param.pfAppWifiCb = wifi_cb;
ret = m2m_wifi_init(&param);
if (M2M_SUCCESS != ret) {
    printf("main: m2m_wifi_init call error!(%d)\r\n", ret);
 while (1) {
    }
}

// Initialize socket module
socketInit();
registerSocketCallback(socket_cb, NULL);

// Connect to router.
m2m_wifi_connect((char *)MAIN_WLAN_SSID, sizeof(MAIN_WLAN_SSID), MAIN_WLAN_AUTH, (char *)MAIN_WLAN_PSK, M2M_WIFI_CH_ALL);