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¿Forzar la actualización (volver a escanear) de las redes inalámbricas desde la línea de comando?

tag-icon • tag-icon windows wireless-networking windows-8.1 netsh
¿Forzar la actualización (volver a escanear) de las redes inalámbricas desde la línea de comando?

¿Cómo puedo obligar a Windows a volver a buscar redes inalámbricas disponibles desde la línea de comando?

(es decir, estoy buscando el equivalente en la línea de comandos de presionar F5 en la GUI).

Respuesta1

Escribí un pequeño WlanScan.exeprograma (~2 KiB) para hacer esto.

Aquí está la base64 (versión de 32 bits):

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

Puede guardarlo en un archivo de PowerShell como este (guarde el Base64 WlanScan.txtprimero):

Set-Content -Path "WlanScan.exe" $([Convert]::FromBase64String($(Get-Content -Path "WlanScan.txt"))) -Encoding Byte

Aquí está el código fuente:

#include <tchar.h>
#include <Windows.h>

#ifndef __CRT_STRINGIZE
#define __CRT_STRINGIZE(Value) #Value
#endif
#ifndef _CRT_STRINGIZE
#define _CRT_STRINGIZE(Value) __CRT_STRINGIZE(Value)
#endif

enum { WLAN_NOTIFICATION_SOURCE_ACM = 0x00000008 };
typedef enum _WLAN_NOTIFICATION_ACM { wlan_notification_acm_start, wlan_notification_acm_autoconf_enabled, wlan_notification_acm_autoconf_disabled, wlan_notification_acm_background_scan_enabled, wlan_notification_acm_background_scan_disabled, wlan_notification_acm_bss_type_change, wlan_notification_acm_power_setting_change, wlan_notification_acm_scan_complete, wlan_notification_acm_scan_fail, wlan_notification_acm_connection_start, wlan_notification_acm_connection_complete, wlan_notification_acm_connection_attempt_fail, wlan_notification_acm_filter_list_change, wlan_notification_acm_interface_arrival, wlan_notification_acm_interface_removal, wlan_notification_acm_profile_change, wlan_notification_acm_profile_name_change, wlan_notification_acm_profiles_exhausted, wlan_notification_acm_network_not_available, wlan_notification_acm_network_available, wlan_notification_acm_disconnecting, wlan_notification_acm_disconnected, wlan_notification_acm_adhoc_network_state_change, wlan_notification_acm_profile_unblocked, wlan_notification_acm_screen_power_change, wlan_notification_acm_profile_blocked, wlan_notification_acm_scan_list_refresh, wlan_notification_acm_end } WLAN_NOTIFICATION_ACM, *PWLAN_NOTIFICATION_ACM;
typedef enum _WLAN_INTERFACE_STATE { wlan_interface_state_not_ready, wlan_interface_state_connected, wlan_interface_state_ad_hoc_network_formed, wlan_interface_state_disconnecting, wlan_interface_state_disconnected, wlan_interface_state_associating, wlan_interface_state_discovering, wlan_interface_state_authenticating } WLAN_INTERFACE_STATE, *PWLAN_INTERFACE_STATE;
typedef struct _WLAN_INTERFACE_INFO { GUID InterfaceGuid; WCHAR strInterfaceDescription[256]; WLAN_INTERFACE_STATE isState; } WLAN_INTERFACE_INFO;
typedef struct _WLAN_INTERFACE_INFO_LIST { DWORD dwNumberOfItems; DWORD dwIndex; WLAN_INTERFACE_INFO InterfaceInfo[1]; } WLAN_INTERFACE_INFO_LIST;
typedef struct _WLAN_NOTIFICATION_DATA { DWORD NotificationSource; DWORD NotificationCode; GUID InterfaceGuid; DWORD dwDataSize; void *pData; } WLAN_NOTIFICATION_DATA, *PWLAN_NOTIFICATION_DATA;
typedef void WINAPI WLAN_NOTIFICATION_CALLBACK(WLAN_NOTIFICATION_DATA *, void *);

typedef struct wlan_scan_finished_context { WLAN_INTERFACE_INFO_LIST *interface_list; HANDLE semaphore; } wlan_scan_finished_context;
static void WINAPI wlan_notification_callback(WLAN_NOTIFICATION_DATA *data, void *context)
{
    if ((data->NotificationSource | WLAN_NOTIFICATION_SOURCE_ACM) == WLAN_NOTIFICATION_SOURCE_ACM)
    {
        if (data->NotificationCode == wlan_notification_acm_power_setting_change || data->NotificationCode == wlan_notification_acm_scan_complete)
        {
            wlan_scan_finished_context *const ctx = (wlan_scan_finished_context *)context;
            if (ctx)
            {
                for (unsigned int i = 0; i != (ctx->interface_list ? ctx->interface_list->dwNumberOfItems : 0); ++i)
                {
                    if (memcmp(&ctx->interface_list->InterfaceInfo[i].InterfaceGuid, &data->InterfaceGuid, sizeof(data->InterfaceGuid)) == 0)
                    {
                        ctx->interface_list->InterfaceInfo[i].isState = (WLAN_INTERFACE_STATE)(ctx->interface_list->InterfaceInfo[i].isState | (data->NotificationCode << 16));
                    }
                }
                if (ctx->semaphore) { long prev; ReleaseSemaphore(ctx->semaphore, 1, &prev); }
            }
        }
    }
}

int _tmain(int argc, TCHAR *argv[])
{
    (void)argv;
    unsigned int result;
    if (argc > 1) { result = ERROR_INVALID_PARAMETER; }
    else
    {
        HMODULE const wlanapi = LoadLibrary(TEXT("wlanapi.dll"));
        if (wlanapi)
        {
#define X(Module, Return, Name, Params) typedef Return Name##_t Params; Name##_t *Name = (Name##_t *)GetProcAddress(Module, __CRT_STRINGIZE(Name));
            X(wlanapi, DWORD WINAPI, WlanCloseHandle, (HANDLE hClientHandle, void *pReserved));
            X(wlanapi, DWORD WINAPI, WlanEnumInterfaces, (HANDLE hClientHandle, void *pReserved, struct _WLAN_INTERFACE_INFO_LIST **ppInterfaceList));
            X(wlanapi, void WINAPI, WlanFreeMemory, (void *pMemory));
            X(wlanapi, DWORD WINAPI, WlanOpenHandle, (DWORD dwClientVersion, void *pReserved, DWORD *pdwNegotiatedVersion, HANDLE *phClientHandle));
            X(wlanapi, DWORD WINAPI, WlanRegisterNotification, (HANDLE hClientHandle, DWORD dwNotifSource, BOOL bIgnoreDuplicate, WLAN_NOTIFICATION_CALLBACK funcCallback, void *pCallbackContext, void *pReserved, DWORD *pdwPrevNotifSource));
            X(wlanapi, DWORD WINAPI, WlanScan, (HANDLE hClientHandle, const GUID *pInterfaceGuid, const struct _DOT11_SSID *pDot11Ssid, const struct _WLAN_RAW_DATA *pIeData, void *pReserved));
#undef X
            DWORD version;
            HANDLE handle = NULL;
            result = WlanOpenHandle ? WlanOpenHandle(1, NULL, &version, &handle) : ERROR_PROC_NOT_FOUND;
            if (result == ERROR_SUCCESS)
            {
                WLAN_INTERFACE_INFO_LIST *interface_list = NULL;
                result = WlanEnumInterfaces ? WlanEnumInterfaces(handle, NULL, &interface_list) : ERROR_PROC_NOT_FOUND;
                if (result == ERROR_SUCCESS)
                {
                    wlan_scan_finished_context context = { interface_list, CreateSemaphore(NULL, 0, (LONG)interface_list->dwNumberOfItems, NULL) };
                    DWORD prev;
                    unsigned int nwait = 0;
                    unsigned long const register_notification_result = WlanRegisterNotification ? WlanRegisterNotification(handle, WLAN_NOTIFICATION_SOURCE_ACM, FALSE, wlan_notification_callback, &context, NULL, &prev) : ERROR_PROC_NOT_FOUND;
                    for (unsigned int i = 0; i != interface_list->dwNumberOfItems; ++i)
                    {
                        unsigned int const result_i = WlanScan ? WlanScan(handle, &interface_list->InterfaceInfo[i].InterfaceGuid, NULL, NULL, NULL) : ERROR_PROC_NOT_FOUND;
                        interface_list->InterfaceInfo[i].isState = (WLAN_INTERFACE_STATE)(interface_list->InterfaceInfo[i].isState & 0xFFFF);
                        if (result_i == ERROR_SUCCESS) { ++nwait; }
                        else { interface_list->InterfaceInfo[i].isState = (WLAN_INTERFACE_STATE)(interface_list->InterfaceInfo[i].isState | (result_i << 16)); }
                    }
                    while (nwait > 0)
                    {
                        WaitForSingleObject(context.semaphore, INFINITE);
                        --nwait;
                    }
                    for (unsigned int i = 0; i != interface_list->dwNumberOfItems; ++i)
                    {
                        unsigned int const result_i = interface_list->InterfaceInfo[i].isState >> 16;
                        if (register_notification_result == ERROR_SUCCESS && result_i != ERROR_SUCCESS)
                        { result = result_i; }
                    }
                    if (result == ERROR_SUCCESS && register_notification_result != ERROR_SUCCESS) { result = ERROR_IO_PENDING; }
                    if (context.semaphore) { CloseHandle(context.semaphore); }
                    WlanFreeMemory ? WlanFreeMemory(interface_list) : ERROR_PROC_NOT_FOUND;
                }
                WlanCloseHandle ? WlanCloseHandle(handle, NULL) : ERROR_PROC_NOT_FOUND;
            }
        }
        else { result = (unsigned int)GetLastError(); }
    }
    return (int)result;
}

Respuesta2

He estado buscando lo mismo por un tiempo, desafortunadamente parece que no puedo encontrar nada en la utilidad netsh para hacer esto. La mejor solución que se me ocurrió fue deshabilitar y luego volver a habilitar la interfaz mediante los comandos netsh. Hay un pequeño retraso (1-2 segundos) después de habilitar la interfaz donde no enumera ninguna red, pero no debería ser demasiado difícil solucionarlo.

Estoy usando los siguientes comandos:

netsh interface set interface name="<NIC name>" admin=disabled
netsh interface set interface name="<NIC name>" admin=enabled
netsh wlan show networks

Editar:Cómo obtener entonces el "<NIC name>"nombre de la tarjeta de interfaz de red.

Primero que nada usa el comando.netsh wlan show networks

Si la WLAN está habilitada, recibirá un mensaje como este

C:\Users\user1>netsh wlan show networks

Interface name : WiFi
There are 2 networks currently visible.

SSID 1 : Cross
    Network type            : Infrastructure
    Authentication          : WPA2-Personal
    Encryption              : CCMP

SSID 2 : WLAN-0A8E41
    Network type            : Infrastructure
    Authentication          : WPA2-Personal
    Encryption              : CCMP

Como ves, en este caso, elnombre de la interfazAhora WiFi puedes proceder como se explicó anteriormente, por ejemplo para desactivar la tarjeta wlan:

netsh interface set interface name="WiFi" admin=disabled

Etcétera. :)

Respuesta3

Sé que llego un poco tarde a la fiesta, pero otra forma de hacerlo es reiniciar el servicio wlansvc.

Get-Service wlansvc | Restart-Service

Desafortunadamente, esto sólo se puede hacer desde un mensaje elevado.

Respuesta4

Actualmente estoy ejecutando Windows 10 Home versión 20H2 y pude forzar una nueva exploración abriendo la lista de redes disponibles desde la barra de tareas usando este comando:

explorer.exe ms-availablenetworks:

Tengo un lote que se conecta a una red específica; pero a veces es necesario volver a escanear para que esa red aparezca como una red disponible. En el pasado, cuando era necesario volver a escanear, mi lote no lograba conectarse a la red. Podría abrir manualmente la lista de redes disponibles y luego ejecutar el lote con éxito.

Ahora, con el comando anterior incluido, mi lote abrirá la lista de redes disponibles, lo que obligará a volver a escanear antes de intentar la conexión. No lo he probado extensamente. Me imagino una espera después de abrir la lista pero antes de intentar la conexión puede ser necesaria.

encontré este comandoaquí.

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