Alibaba Cloud SDK:Configure a proxy

If your environment routes outbound traffic through a proxy server, configure the proxy before sending SDK requests.

Configuration methods

• Environment variables — the simpler approach for containerized or CI/CD environments. Set one or more of the following variables before starting your application:

  • HTTP_PROXY or http_proxy: the proxy URL for HTTP requests. Example: http://127.0.0.1:8080.

  • HTTPS_PROXY or https_proxy: the proxy URL for HTTPS requests, with optional credentials. Format: http://<user>:<password>@<host>:<port>. Example: http://user:password@127.0.0.1:8989.

  • NO_PROXY or no_proxy: a comma-separated list of IP addresses or domain names that bypass the proxy. Example: 127.0.0.1,localhost.

• Client initialization — configure the proxy programmatically when initializing an SDK client. This setting overrides any environment variable configuration.

  import (
  	"fmt"
  
  	"os"
  
  	"github.com/aliyun/alibaba-cloud-sdk-go/sdk"
  	"github.com/aliyun/alibaba-cloud-sdk-go/sdk/auth/credentials"
  	ecs "github.com/aliyun/alibaba-cloud-sdk-go/services/ecs"
  )
  
  func main() {
  	// Initialize the SDK configuration.
  	config := sdk.NewConfig()
  	// Use the AccessKey ID and AccessKey secret of the Resource Access Management (RAM) user.
  	credential := credentials.NewAccessKeyCredential(os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_ID"), os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET"))
  	client, err := ecs.NewClientWithOptions("cn-hangzhou", config, credential)
  	if err != nil {
  		panic(err)
  	}
  	// Configure proxies on the initialized client.
  	// Format for an authenticated proxy: http://<user>:<password>@<host>:<port>
  	client.SetHttpsProxy("http://user:password@127.0.0.1:8989") // HTTPS proxy
  	client.SetHttpProxy("http://127.0.0.1:8080")                // HTTP proxy
  	client.SetNoProxy("127.0.0.1,localhost")                    // Comma-separated IPs or domain names that bypass the proxy
  
  	// Create a request.
  	request := ecs.CreateDescribeRegionsRequest()
  	request.Scheme = "https"
  	// Set the request parameters.
  	request.InstanceChargeType = "PrePaid" // The billing method of the instance.
  	request.ResourceType = "instance"      // The resource type.
  	// Send the request and handle the response.
  	response, err := client.DescribeRegions(request)
  	if err != nil {
  		fmt.Print(err.Error())
  	}
  	fmt.Printf("response is %#v\n", response)
  }