HTTPDNS:Pass custom resolution parameters from a client

Add custom resolution parameters using the SDK

The following example uses the asynchronous resolution API of the Android SDK. For more information, see Custom resolution API.

// Pass custom resolution parameters using the custom resolution API.
Map<String, String> sdnsParams = new HashMap<>();
sdnsParams.put('osType', 'iOS');

HttpDnsService httpdns = HttpDns.getService(applicationContext, accountID, secretKey);
httpdns.getHttpDnsResultForHostAsync(
  "www.aliyun.com", // The domain name to resolve.
  RequestIpType.auto, // The type of IP address for resolution.
  sdnsParams, // The custom resolution parameters.
  cacheKey, // The cache key.
  new HttpDnsCallback() {
    void onHttpDnsCompleted(HTTPDNSResult result) {
      // The callback function after the resolution is complete.
      // todo something...
    }      
  }
);

Add custom resolution parameters using an HTTP API operation

To resolve a domain name, use a URL in the following format:

http://203.107.XXX.XXX/{accountId}/d?host={domain-name}&ip={client-ip}&sdns-osType=iOS

• Replace 203.107.XXX.XXX with the HTTPDNS service IP address. For more information, see Obtain the service IP address.

• Replace {accountId} with your account ID from the console.

• Replace {Domain name} with the domain name to resolve.

• Replace {IP address of a specific line} with the client IP address to verify.

• Prefix custom resolution parameters with sdns-. Otherwise, the parameters are ignored. For example: sdns-osType=iOS.