// Download the object. You need to provide the key to download the object. 	 // Download the object. You need to provide the key to download the object. package main

import (
    "context"
    "errors"
    "io/ioutil"
    "net/http"
    "net/url"
    "os"
    "strings"

    "github.com/tencentyun/cos-go-sdk-v5"
    "github.com/tencentyun/cos-go-sdk-v5/debug"
)

func main(){
    // Replace it with your <Bucketname-APPID>
    u, _ := url.Parse("https://<Bucketname-APPID>.cos.ap-guangzhou.myqcloud.com")
    b := &cos.BaseURL{BucketURL: u}
    c := cos.NewClient(b, &http.Client{
            Transport: &cos.AuthorizationTransport{
                    SecretID: os.Getenv("SECRETID"),  // User `SecretId`. We recommend that you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit https://www.tencentcloud.com/document/product/598/37140?from_cn_redirect=1.
                    SecretKey: os.Getenv("SECRETKEY"),  // User `SecretKey`. We recommend that you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit  https://www.tencentcloud.com/document/product/598/37140?from_cn_redirect=1.
                    Transport: &debug.DebugRequestTransport{
                            RequestHeader: true,
                            // Notice when put a large file and set need the request body, might happend out of memory error.
                            RequestBody:    false,
                            ResponseHeader: true,
                            ResponseBody:   true,
                    },
            },
    })
    opt := &cos.ObjectPutOptions{
            ObjectPutHeaderOptions: &cos.ObjectPutHeaderOptions{
                    ContentType:           "text/html",
                    XCosServerSideEncryption: "AES256",
            },
            ACLHeaderOptions: &cos.ACLHeaderOptions{},
    }
    name := "PutFromGoWithSSE-COS"
    content := "Put Object From Go With SSE-COS"
    f := strings.NewReader(content)
    _, err := c.Object.Put(context.Background(), name, f, opt)
    if err != nil{
        panic(err)
    }
    // Download an object
    getopt := &cos.ObjectGetOptions{}
    var resp *cos.Response
    resp, err = c.Object.Get(context.Background(), name, getopt)
    if err != nil{
        panic(err)
    }
    // Verify
    bodyBytes, _ := ioutil.ReadAll(resp.Body)
    bodyContent := string(bodyBytes)
    if bodyContent != content {
        panic(errors.New("Content inconsistency"))
    }
}

package main

import (
    "context"
    "net/url"
    "os"
    "strings"
    "errors"
    "io/ioutil"
    "net/http"

    "github.com/tencentyun/cos-go-sdk-v5"
    "github.com/tencentyun/cos-go-sdk-v5/debug"
)

func main(){
    // Replace it with your <Bucketname-APPID>
    u, _ := url.Parse("https://<Bucketname-APPID>.cos.ap-guangzhou.myqcloud.com")
    b := &cos.BaseURL{BucketURL: u}
    c := cos.NewClient(b, &http.Client{
            Transport: &cos.AuthorizationTransport{
                    SecretID: os.Getenv("SECRETID"),  // User `SecretId`. We recommend that you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit https://www.tencentcloud.com/document/product/598/37140?from_cn_redirect=1.
                    SecretKey: os.Getenv("SECRETKEY"),  // User `SecretKey`. We recommend you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit  https://www.tencentcloud.com/document/product/598/37140?from_cn_redirect=1.
                    Transport: &debug.DebugRequestTransport{
                            RequestHeader: true,
                            // Notice when put a large file and set need the request body, might happend out of memory error.
                            RequestBody:    false,
                            ResponseHeader: true,
                            ResponseBody:   true,
                    },
            },
    })
    opt := &cos.ObjectPutOptions{
            ObjectPutHeaderOptions: &cos.ObjectPutHeaderOptions{
                    ContentType: "text/html",
                    XCosSSECustomerAglo: "AES256",
                    XCosSSECustomerKey: "MDEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkNERUY=",
                    XCosSSECustomerKeyMD5: "U5L61r7jcwdNvT7frmUG8g==",
                },
            ACLHeaderOptions: &cos.ACLHeaderOptions{},
    }
    name := "PutFromGoWithSSE-C"
    content := "Put Object From Go With SSE-C"
    f := strings.NewReader(content)
    _, err := c.Object.Put(context.Background(), name, f, opt)
    if err != nil{
        panic(err)
    }
    Download the object. You need to provide the key to download the object.
    getopt := &cos.ObjectGetOptions{
        XCosSSECustomerAglo: "AES256",
        XCosSSECustomerKey: "MDEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkNERUY=",
        XCosSSECustomerKeyMD5: "U5L61r7jcwdNvT7frmUG8g==",
    }
    var resp *cos.Response
    resp, err = c.Object.Get(context.Background(), name, getopt)
    if err != nil{
        panic(err)
    }
    // Verify
    bodyBytes, _ := ioutil.ReadAll(resp.Body)
    bodyContent := string(bodyBytes)
    if bodyContent != content {
        panic(errors.New("Content inconsistency"))
    }
}