How to implement network connection detection in SDK?

Implementing network connection detection in an SDK typically involves checking the availability of network resources and verifying that a device can communicate with a server or service. This is crucial for ensuring that the SDK functions correctly and provides a seamless user experience.

To implement network connection detection, you can follow these steps:

1. Check Network Availability: Use platform-specific APIs to determine if the device is connected to a network. For example, on Android, you can use ConnectivityManager to check the network state.

2. Ping a Server: Attempt to send a simple network request, such as a ping, to a known server to verify connectivity. This can be done using HTTP requests or ICMP packets.

3. Handle Different Network States: Account for various network states like Wi-Fi, mobile data, and offline modes. Provide appropriate feedback or fallback mechanisms based on the network state.

4. Retry Mechanism: Implement a retry mechanism in case of transient network issues. This can help in establishing a connection when the network is temporarily unavailable.

5. Notify the User: If the device is offline or unable to connect to the required server, notify the user and provide guidance on how to resolve the issue.

Example in Android (Java):

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

public class NetworkUtils {
    public static boolean isNetworkAvailable(Context context) {
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
        return activeNetworkInfo != null && activeNetworkInfo.isConnected();
    }
}

Example in iOS (Swift):

import Foundation
import SystemConfiguration

public class NetworkUtils {
    public static func isNetworkAvailable() -> Bool {
        var zeroAddress = sockaddr_in(sin_len: 0, sin_family: 0, sin_port: 0, sin_addr: in_addr(s_addr: 0), sin_zero: (0, 0, 0, 0, 0, 0, 0, 0))
        zeroAddress.sin_len = UInt8(MemoryLayout.size(ofValue: zeroAddress))
        zeroAddress.sin_family = sa_family_t(AF_INET)

        guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {
            $0.withMemoryRebound(to: sockaddr.self, capacity: 1) {
                SCNetworkReachabilityCreateWithAddress(nil, $0)
            }
        }) else {
            return false
        }

        var flags: SCNetworkReachabilityFlags = []
        if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
            return false
        }
        let isReachable = flags.contains(.reachable)
        let needsConnection = flags.contains(.connectionRequired)
        return isReachable && !needsConnection
    }
}

For cloud-related services, you might consider using services like Tencent Cloud's Cloud Functions or API Gateway to handle network requests and responses, which can be integrated into your SDK for more robust network connectivity management.