简介
本文档提供关于调用上传下载接口时对链接进行限速。
使用说明
限速值设置范围为819200 - 838860800,单位默认为 bit/s,即800Kb/s - 800Mb/s,如果超出该范围将返回400错误。
说明:
使用案例
上传时对单链接限速
// COS 的 bucket 名称, [bucket]-[appid], 如: mybucket-1253666666,可在 https://console.cloud.tencent.com/cos5/bucket 查看char bucket_name[] = "examplebucket-12500000000";// 开发者访问 COS 服务时拥有的用户维度唯一资源标识,用以标识资源,可在 https://console.cloud.tencent.com/cam/capi 页面获取char appid[] = "12500000000";// 开发者拥有的项目身份ID/密钥,可在 https://console.cloud.tencent.com/cam/capi 页面获取char secret_id[] = "AKIDXXXXXXXX";char secret_key[] = "1A2Z3YYYYYYYYYY";//endpoint 是 COS 访问域名信息(不设置存储桶前缀,访问 COS 时会自动在前面拼接上[bucket]-[appid]), 详情请参见 https://cloud.tencent.com/document/product/436/6224 文档char endpoint[] = "cos.ap-guangzhou.myqcloud.com";// 是否使用自定域名。如果设置为 COS_TRUE ,则访问 COS 时需要将 endpoint 的值修改为自定义域名int is_cname = COS_FALSE;void init_test_config(cos_config_t* config, int is_cname) {cos_str_set(&config->endpoint, endpoint);cos_str_set(&config->access_key_id, secret_id);cos_str_set(&config->access_key_secret, secret_key);cos_str_set(&config->appid, appid);// cos_str_set(&config->sts_token, token); // 使用临时密钥时的 tokenconfig->is_cname = is_cname; // 是否使用自定义域名}void init_test_request_options(cos_request_options_t* options, int is_cname) {options->config = cos_config_create(options->pool);init_test_config(options->config, is_cname);options->ctl = cos_http_controller_create(options->pool, 0);}void log_status(cos_status_t* s) {cos_warn_log("status->code: %d", s->code);if (s->error_code)cos_warn_log("status->error_code: %s", s->error_code);if (s->error_msg)cos_warn_log("status->error_msg: %s", s->error_msg);if (s->req_id)cos_warn_log("status->req_id: %s", s->req_id);}void put_object_from_file_demo() {char object_name[] = "test.txt"; // 对象名称char file_path[] = "test.txt"; // 本地文件路径cos_pool_t* p = NULL;cos_status_t* s = NULL;cos_request_options_t* options = NULL;cos_string_t bucket;cos_string_t object;cos_string_t file;cos_table_t* resp_headers = NULL;cos_table_t* headers = NULL;// 创建内存池cos_pool_create(&p, NULL);// 初始化请求选项options = cos_request_options_create(p);init_test_request_options(options, is_cname);cos_str_set(&bucket, bucket_name);// 限速值设置范围为819200 - 838860800,即100KB/s - 100MB/s,如果超出该范围将返回400错误headers = cos_table_make(p, 1); // 创建 headerscos_table_add_int(headers, "x-cos-traffic-limit", 819200);// 上传对象cos_str_set(&file, file_path);cos_str_set(&object, object_name);s = cos_put_object_from_file(options, &bucket, &object, &file, headers, &resp_headers);if (cos_status_is_ok(s)) {printf("put object succeeded\\n");} else {printf("put object failed\\n");}log_status(s);// 销毁内存池cos_pool_destroy(p);}int main() {if (cos_http_io_initialize(NULL, 0) != COSE_OK) {exit(1);}put_object_from_file_demo();// cos_http_io_deinitialize lastcos_http_io_deinitialize();return 0;}
下载时对单链接限速
说明:
// COS 的 bucket 名称, [bucket]-[appid], 如: mybucket-1253666666,可在 https://console.cloud.tencent.com/cos5/bucket 查看char bucket_name[] = "examplebucket-12500000000";// 开发者访问 COS 服务时拥有的用户维度唯一资源标识,用以标识资源,可在 https://console.cloud.tencent.com/cam/capi 页面获取char appid[] = "12500000000";// 开发者拥有的项目身份ID/密钥,可在 https://console.cloud.tencent.com/cam/capi 页面获取char secret_id[] = "AKIDXXXXXXXX";char secret_key[] = "1A2Z3YYYYYYYYYY";//endpoint 是 COS 访问域名信息(不设置存储桶前缀,访问 COS 时会自动在前面拼接上[bucket]-[appid]), 详情请参见 https://cloud.tencent.com/document/product/436/6224 文档char endpoint[] = "cos.ap-guangzhou.myqcloud.com";// 是否使用自定域名。如果设置为 COS_TRUE ,则访问 COS 时需要将 endpoint 的值修改为自定义域名int is_cname = COS_FALSE;void init_test_config(cos_config_t* config, int is_cname) {cos_str_set(&config->endpoint, endpoint);cos_str_set(&config->access_key_id, secret_id);cos_str_set(&config->access_key_secret, secret_key);cos_str_set(&config->appid, appid);// cos_str_set(&config->sts_token, token); // 使用临时密钥时的 tokenconfig->is_cname = is_cname; // 是否使用自定义域名}void init_test_request_options(cos_request_options_t* options, int is_cname) {options->config = cos_config_create(options->pool);init_test_config(options->config, is_cname);options->ctl = cos_http_controller_create(options->pool, 0);}void log_status(cos_status_t* s) {cos_warn_log("status->code: %d", s->code);if (s->error_code)cos_warn_log("status->error_code: %s", s->error_code);if (s->error_msg)cos_warn_log("status->error_msg: %s", s->error_msg);if (s->req_id)cos_warn_log("status->req_id: %s", s->req_id);}void get_object_to_file_demo(){char object_name[] = "test.txt"; // 对象名称char file_path[] = "test.txt"; // 本地文件路径cos_pool_t *p = NULL;cos_status_t *s = NULL;cos_request_options_t *options = NULL;cos_string_t bucket;cos_string_t object;cos_table_t *resp_headers;cos_string_t file;cos_table_t *headers = NULL;cos_table_t *params = NULL;cos_pool_create(&p, NULL);options = cos_request_options_create(p);init_test_request_options(options, is_cname);cos_str_set(&bucket, bucket_name);cos_str_set(&file, file_path);cos_str_set(&object, object_name);//限速值设置范围为819200 - 838860800,即100KB/s - 100MB/s,如果超出该范围将返回400错误headers = cos_table_make(p, 1); // 创建 headerscos_table_add_int(headers, "x-cos-traffic-limit", 819200);s = cos_get_object_to_file(options, &bucket, &object, headers, params, &file, &resp_headers);log_status(s);{int i = 0;apr_array_header_t * pp = (apr_array_header_t *) apr_table_elts(resp_headers);for ( ; i < pp->nelts; i++){apr_table_entry_t *ele = (apr_table_entry_t *)pp->elts+i;printf("%s: %s\\n",ele->key,ele->val);}}cos_pool_destroy(p);}int main() {if (cos_http_io_initialize(NULL, 0) != COSE_OK) {exit(1);}get_object_to_file_demo();// cos_http_io_deinitialize lastcos_http_io_deinitialize();return 0;}