forceWifiUsage causes all network requests to fail

I’m trying to connect to an IoT-like device that has a hotspot but does not have internet. If I don’t call forceWifiUsage(true), then I can get successful responses using fetch and RNFetchBlob. If I try to force wifi usage, however, all of my proceeding requests fail. When using fetch, I see TypeError: Network request failed and when using RNFetchBlob I’m seeing Error: socket failed: ENONET (Machine is not on the network).

I’m having a hell of a time trying to understand what’s happening. Any help would be greatly appreciated.

[jcarioti]

Connecting and locking to a network:

        val hotspotSpecifier = WifiNetworkSpecifier.Builder()
                .setSsid(hotspotSSID);

        val hotspotConnectRequest = NetworkRequest.Builder()
                .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
                .removeCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
                .setNetworkSpecifier(hotspotSpecifier.build())
                .build();

        connectivityCallback = object : ConnectivityManager.NetworkCallback() {
            override fun onAvailable(network: Network) {
                super.onAvailable(network);

                if (lock) {
                    // Lock the device to this network and force all network requests
                    connectivityManager.bindProcessToNetwork(network);
                    wifiLock = wifiManager.createWifiLock(WifiManager.WIFI_MODE_FULL_HIGH_PERF, "WIFI_LOCK");
                }

                promise.resolve("SSID_CONNECTION_SUCCESS");
            }

            override fun onUnavailable() {
                super.onUnavailable();
                promise.reject("SSID_CONNECTION_FAILED", "Could not connect to $hotspotSSID");
            }

            override fun onLost(network: Network) {
                super.onLost(network)

                System.out.println("Lost network...")
                System.out.println(network.toString())
            }
        }

        connectivityManager.requestNetwork(hotspotConnectRequest, connectivityCallback);

Releasing a lock and disconnecting:

        try {
            connectivityManager.unregisterNetworkCallback(connectivityCallback)

            // Calling removeNetworkSuggestions with an empty list will remove
            // all network connections that have been suggested by this app.
            //
            // This should force a disconnect from the locked network and will
            // let the device go back to a known network.

            val networkSuggestions = listOf<WifiNetworkSuggestion>()
            wifiManager.removeNetworkSuggestions(networkSuggestions)

            if (::wifiLock.isInitialized && wifiLock.isHeld) {
                wifiLock.release();
            }

            connectivityManager.bindProcessToNetwork(null)

        } catch(e: Throwable){
            // Wifi Lock may have already been released at this point
        }

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