x-cos-hash-crc64ecma
header represents the CRC64 value of a part, which you can compare against the locally calculated CRC64 value to verify the part integrity.HTTP/1.1 200 OKcontent-length: 0connection: closedate: Thu, 05 Dec 2019 01:58:03 GMTetag: "358e8c8b1bfa35ee3bd44cb3d2cc416b"server: tencent-cosx-cos-hash-crc64ecma: 15060521397700495958x-cos-request-id: NWRlODY0MmJfMjBiNDU4NjRfNjkyZl80ZjZi****
x-cos-hash-crc64ecma
header represents the CRC64 value of an entire object, which you can compare against the locally calculated CRC64 value to verify the object integrity.HTTP/1.1 200 OKcontent-type: application/xmltransfer-encoding: chunkedconnection: closedate: Thu, 05 Dec 2019 02:01:17 GMTserver: tencent-cosx-cos-hash-crc64ecma: 15060521397700495958x-cos-request-id: NWRlODY0ZWRfMjNiMjU4NjRfOGQ4Ml81MDEw****[Object Content]
cos_status_t *cos_upload_part_from_buffer(const cos_request_options_t *options,const cos_string_t *bucket,const cos_string_t *object,const cos_string_t *upload_id,int part_num,cos_list_t *buffer,cos_table_t **resp_headers);cos_status_t *cos_upload_part_from_file(const cos_request_options_t *options,const cos_string_t *bucket,const cos_string_t *object,const cos_string_t *upload_id,int part_num,cos_upload_file_t *upload_file,cos_table_t **resp_headers);cos_status_t *cos_download_part_to_file(const cos_request_options_t *options,const cos_string_t *bucket,const cos_string_t *object,cos_upload_file_t *download_file,cos_table_t **resp_headers);cos_status_t *cos_put_object_from_buffer(const cos_request_options_t *options,const cos_string_t *bucket,const cos_string_t *object,cos_list_t *buffer,cos_table_t *headers,cos_table_t **resp_headers);cos_status_t *cos_put_object_from_file(const cos_request_options_t *options,const cos_string_t *bucket,const cos_string_t *object,const cos_string_t *filename,cos_table_t *headers,cos_table_t **resp_headers);cos_status_t *cos_get_object_to_buffer(const cos_request_options_t *options,const cos_string_t *bucket,const cos_string_t *object,cos_table_t *headers,cos_table_t *params,cos_list_t *buffer,cos_table_t **resp_headers);cos_status_t *cos_get_object_to_file(const cos_request_options_t *options,const cos_string_t *bucket,const cos_string_t *object,cos_table_t *headers,cos_table_t *params,cos_string_t *filename,cos_table_t **resp_headers);cos_status_t *cos_append_object_from_buffer(const cos_request_options_t *options,const cos_string_t *bucket,const cos_string_t *object,int64_t position,cos_list_t *buffer,cos_table_t *headers,cos_table_t **resp_headers);cos_status_t *cos_append_object_from_file(const cos_request_options_t *options,const cos_string_t *bucket,const cos_string_t *object,int64_t position,const cos_string_t *append_file,cos_table_t *headers,cos_table_t **resp_headers);cos_status_t *cos_resumable_download_file(cos_request_options_t *options,cos_string_t *bucket,cos_string_t *object,cos_string_t *filepath,cos_table_t *headers,cos_table_t *params,cos_resumable_clt_params_t *clt_params,cos_progress_callback progress_callback);
Parameter | Description | Type |
options | COS request options | Struct |
options.ctl.options.enable_crc | Whether to enable CRC check. CRC check is enabled by default. | Int |
Response Parameter | Description | Type |
code | Error code (If CRC fails, COSE_CRC_INCONSISTENT_ERROR is returned.) | Int |
error_code | Error code content | String |
error_msg | Error code description | String |
req_id | Request message ID | String |
COS_TRUE
, which is the default value.#include "cos_http_io.h"#include "cos_api.h"#include "cos_log.h"#include <unistd.h>// `endpoint` is the COS access domain name. For more information, see https://www.tencentcloud.com/document/product/436/6224.static char TEST_COS_ENDPOINT[] = "cos.ap-guangzhou.myqcloud.com";// A developer-owned secret ID/key used for the project. It can be obtained at https://console.tencentcloud.com/cam/capi.static char *TEST_ACCESS_KEY_ID; // Your SecretIdstatic char *TEST_ACCESS_KEY_SECRET; // Your SecretKey// A unique user-level resource identifier for COS access. It can be obtained at https://console.tencentcloud.com/cam/capi.static char TEST_APPID[] = "<APPID>"; // Your APPID// COS bucket name, in the format of [bucket]-[appid], for example `mybucket-1253666666`. It can be obtained at https://console.tencentcloud.com/cos5/bucket.static char TEST_BUCKET_NAME[] = "<bucketname-appid>";// A unique identifier of an object stored in COS. For more information about objects and object keys, please see https://www.tencentcloud.com/document/product/436/13324.static char TEST_OBJECT_NAME1[] = "1.txt";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 init_test_config(cos_config_t *config, int is_cname){cos_str_set(&config->endpoint, TEST_COS_ENDPOINT);cos_str_set(&config->access_key_id, TEST_ACCESS_KEY_ID);cos_str_set(&config->access_key_secret, TEST_ACCESS_KEY_SECRET);cos_str_set(&config->appid, TEST_APPID);config->is_cname = is_cname;}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 test_data_crc64(){cos_pool_t *p = NULL;int is_cname = 0;cos_status_t *s = NULL;cos_request_options_t *options = NULL;cos_string_t bucket;cos_table_t *resp_headers;cos_table_t *headers = NULL;cos_list_t buffer;cos_list_t download_buffer;cos_string_t object;cos_buf_t *content = NULL;char *str = "This is my test data.";// Basic configurationcos_pool_create(&p, NULL);options = cos_request_options_create(p);init_test_request_options(options, is_cname);options->ctl->options->enable_crc = COS_TRUE; // Enable CRC check (enabled by default)cos_str_set(&bucket, TEST_BUCKET_NAME);cos_str_set(&object, TEST_OBJECT_NAME1);// Upload an object and enable CRC checkcos_list_init(&buffer);content = cos_buf_pack(options->pool, str, strlen(str));cos_list_add_tail(&content->node, &buffer);s = cos_put_object_from_buffer(options, &bucket, &object,&buffer, headers, &resp_headers);log_status(s);// Download an object and enable CRC checkcos_list_init(&download_buffer);s = cos_get_object_to_buffer(options, &bucket, &object,headers, NULL, &download_buffer, &resp_headers);log_status(s);// Destroy the memory poolcos_pool_destroy(p);}int main(int argc, char *argv[]){// Get SecretId and SecretKey from environment variablesTEST_ACCESS_KEY_ID = getenv("COS_SECRETID");TEST_ACCESS_KEY_SECRET = getenv("COS_SECRETKEY");if (cos_http_io_initialize(NULL, 0) != COSE_OK) {exit(1);}// Set the log level. Default value: `COS_LOG_WARN`cos_log_set_level(COS_LOG_WARN);// Set log output. Default value: `stderr`cos_log_set_output(NULL);test_data_crc64();cos_http_io_deinitialize();return 0;}
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