When front end use tencent cloud cos I do object storage to upload the data, is the first input MD5, MD5 right to upload files, but may in the upload file because the file is too large or other causes damage or some problems, is in this case, when a file upload success after I think again the file with the MD5 efficacy, tencent cloud cos when official documents can be uploaded to the Content of the HTTP request - MD5 field is set to the MD5 checksum value after a Base64 encoded object Content, cos the server will check user upload object at this time, only when the object cos the server receives the MD5 checksum value in accordance with the user to set the Content - MD5, object can only be uploaded successfully,
For the great god give a thought
