Object Storage Service:Configure a CDN-accelerated domain name in an OSS SDK

import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
public class Demo {
    public static void main(String[] args) throws Exception {
        // Specify the custom domain name that is configured for CDN acceleration, such as example.com.
        String endpoint = "http://example.com";
        // Specify the region that corresponds to the Endpoint, such as cn-hangzhou.
        String region = "cn-hangzhou";
        // Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set.
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
              
        // Create an OSSClient instance.
        // When the OSSClient instance is no longer needed, call the shutdown method to release resources.
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        // Explicitly declare the use of the V4 signature algorithm.
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
        // Enable CNAME. CNAME is used to map a custom domain name to the destination bucket.
        clientBuilderConfiguration.setSupportCname(true);
        OSS ossClient = OSSClientBuilder.create()
                .endpoint(endpoint)
                .credentialsProvider(credentialsProvider)
                .clientConfiguration(clientBuilderConfiguration)
                .region(region)
                .build();
        try {
            // Create a ClientConfiguration instance. You can modify the default parameters as needed.
            ClientBuilderConfiguration conf = new ClientBuilderConfiguration();
            // Enable CNAME. CNAME is used to map a custom domain name to the destination bucket.
            conf.setSupportCname(true);
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

<?php
if (is_file(__DIR__ . '/../autoload.php')) {
    require_once __DIR__ . '/../autoload.php';
}
if (is_file(__DIR__ . '/../vendor/autoload.php')) {
    require_once __DIR__ . '/../vendor/autoload.php';
}

use OSS\OssClient;
use OSS\Core\OssException;

// Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set.
$accessKeyId = getenv("OSS_ACCESS_KEY_ID");
$accessKeySecret = getenv("OSS_ACCESS_KEY_SECRET");
// Specify the custom domain name that is configured for CDN acceleration, such as example.com.
$endpoint = "https://example.com";

try {
    // Enable CNAME. CNAME is used to map a custom domain name to the destination bucket.
    $ossClient = new OssClient($accessKeyId, $accessKeySecret, $endpoint, true);
} catch (OssException $e) {
    print $e->getMessage();
}                    

# -*- coding: utf-8 -*-
import oss2
from oss2.credentials import EnvironmentVariableCredentialsProvider

# Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set.
auth = oss2.ProviderAuth(EnvironmentVariableCredentialsProvider())

# Specify the custom domain name that is configured for CDN acceleration, such as example.com.
cname = 'http://example.com'

# Set is_cname to True to enable CNAME. CNAME is used to map a custom domain name to the destination bucket.
bucket = oss2.Bucket(auth, cname, 'examplebucket', is_cname=True)                   

using Aliyun.OSS;
using Aliyun.OSS.Common;

// Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set.
var accessKeyId = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_ID");
var accessKeySecret = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_SECRET");
// Specify the custom domain name that is configured for CDN acceleration, such as example.com.
const string endpoint = "https://example.com";

// Create a ClientConfiguration instance. Modify the default parameters as needed.
var conf = new ClientConfiguration();
// Enable CNAME. CNAME is used to map a custom domain name to the destination bucket.
conf.IsCname = true;

// Create an OssClient instance.
var client = new OssClient(endpoint, accessKeyId, accessKeySecret, conf);                    

package main

import (
    "fmt"
    "os"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set.
    provider, err := oss.NewEnvironmentVariableCredentialsProvider()
    if err != nil {
        fmt.Println("Error:", err)
        os.Exit(-1)
    }

    // Create an OSSClient instance.
    // Specify the custom domain name that is configured for CDN acceleration, such as example.com.
    client, err := oss.New("https://example.com", "", "", oss.UseCname(true), oss.SetCredentialsProvider(&provider))
    if err != nil {
        fmt.Println("Error:", err)
        os.Exit(-1)
    }
}

#include "oss_api.h"
#include "aos_http_io.h"
/* Specify the custom domain name that is configured for CDN acceleration, such as example.com. */
const char *endpoint = "https://example.com";

void init_options(oss_request_options_t *options) {
    options->config = oss_config_create(options->pool);
    /* Initialize the aos_string_t type with a char* string. */
    aos_str_set(&options->config->endpoint, endpoint);
    /* Obtain access credentials from environment variables. Before you run this code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set. */    
    aos_str_set(&options->config->access_key_id, getenv("OSS_ACCESS_KEY_ID"));
    aos_str_set(&options->config->access_key_secret, getenv("OSS_ACCESS_KEY_SECRET"));
    /* Enable CNAME. CNAME is used to map a custom domain name to the destination bucket. */
    options->config->is_cname = 1;
    options->ctl = aos_http_controller_create(options->pool, 0);
}
int main() {
    aos_pool_t *p;
    oss_request_options_t *options;
    /* Initialize global variables. */
    if (aos_http_io_initialize(NULL, 0) != AOSE_OK) {
        return -1;
    }
    /* Initialize the memory pool and options. */
    aos_pool_create(&p, NULL);
    options = oss_request_options_create(p);
    init_options(options); 
    /* Release the memory pool. This releases the memory allocated for resources during the request. */
    aos_pool_destroy(p);
    /* Release the previously allocated global resources. */
    aos_http_io_deinitialize();
    return 0;
}