This server APIs allows you to upload file messages to Netease Object Storage (NOS) or remove files uploaded earlier.

Upload a file

Upload a file to NOS.

Rate limit

• Apps can call the API by 100 times per second. If an app calls the API exceeding the limit, requests from the app will be blocked for 10 seconds before the API become available again.
• Character streams must be base64 encoded,
• The maximum size of a file for upload reaches up to 15MB.

URL

httpPOST https://api.netease.im/nimserver/msg/upload.action HTTP/1.1
Content-Type:application/x-www-form-urlencoded;charset=utf-8

Request parameters

• For information about how to set the header in a POST request, see API Call methods.

• The settings of the body in a POST request:

Parameter	Type	Required	Description
content	String	Yes	Character stream of Base64 encoded string (Base64.encode(bytes)). Up to 15MB is supported.
type	String	No	Type of an uploaded file. Up to 128 characters are allowed. A string exceeding the upper limit, a value of null is applied.
ishttps	boolean	No	Whether the response is returned using HTTPS. The default value is false.
expireSec	int	No	Time when the file expires. Unit: seconds. The value must be greater than or equal to 86400.
tag	String	No	Scenario tag. Up to 32 characters are allowed.

Response parameters

Parameter	Type	Description
url	String	URL for the uploaded file.

Example

cURL request example

curlcurl -X POST -H "AppKey: go9dnk49bkd9jd9vmel1*****803mgq3" -H "Nonce: 4tgggergigwow323t23t" -H "CurTime: 1443592222" -H "CheckSum: 9e9db3b6c9abb2e1962cf3e6f7316fcc55583f86" -H "Content-Type: application/x-www-form-urlencoded" -d 'content=gwettwgsgssgs323f' 'https://api.netease.im/nimserver/msg/upload.action'

Example success response

HTTP response in JSON

json"Content-Type": "application/json; charset=utf-8"
{
    "code":200,
    "url": "https://sf.nos.netease.im/image.jpg"  
}

Example error response

json"Content-Type": "application/json; charset=utf-8"
{
    "code":414
    "desc":"content is empty" // The upload file contains no content.
}

Status code

The following status codes are related to responses of this API. For more status codes, see Status codes.

Status code	Description	Recommendation
403	Possible reasons for a failed request: Authentication failed The message cannot be recalled. </ ul>	Handle the error based on the specific message.
414	Parameter error	Check the format and restrictions of arguments based on the error message.
500	Internal Server Error	-

Multipart upload

Overview

Upload files to NOS using multipart upload.

Rate limit

• Apps can call the API by 100 times per second. If an app calls the API exceeding the limit, requests from the app will be blocked for 10 seconds before the API become available again.
• The maximum size of a file for upload reaches up to 15MB.

URL

httpPOST https://api.netease.im/nimserver/msg/fileUpload.action HTTP/1.1
Content-Type:multipart/form-data;charset=utf-8

Request parameters

• For information about how to set the header in a POST request, see API Call methods.

• The settings of the body in a POST request:

Parameter	Type	Required	Description
content	String	Yes	Character stream up to 15MB
type	String	No	File type. Up to 128 characters are allowed. If the string exceeds the upper limit, a value of null is applied.
ishttps	boolean	No	Whether the response is returned using HTTPS. The default value is false.
expireSec	int	No	Time when the file expires. Unit: seconds. The value must be greater than or equal to 86400.
tag	String	No	Scenario tag. Up to 32 characters are allowed.

Response parameters

Parameter	Type	Description
url	String	URL for the uploaded file.

Example

cURL request example

curlcurl -X POST -H "AppKey: go9dnk49bkd9jd9vmel1*****803mgq3" -H "Nonce: 4tgggergigwow323t23t" -H "CurTime: 1443592222" -H "CheckSum: 9e9db3b6c9abb2e1962cf3e6f7316fcc55583f86" -H "Content-Type: multipart/form-data" -d 'content=gwettwgsgssgs323f' 'https://api.netease.im/nimserver/msg/fileUpload.action'

Example success response

HTTP response in JSON

json"Content-Type": "application/json; charset=utf-8"
{
    "code":200,
    "url": "https://sf.nos.netease.im/image.jpg"  
}

Example error response

json"Content-Type": "application/json; charset=utf-8"
{
    "code":414
    "desc":"content is empty" // The upload file contains no content.
}

Status code

The following status codes are related to responses of this API. For more status codes, see Status codes.

Status code	Description	Recommendation
403	Possible reasons for a failed request: Authentication failed The message cannot be recalled. </ ul>	Handle the error based on the specific message.
414	Parameter error	Check the format and restrictions of arguments based on the error message.
500	Internal Server Error	-

Delete uploaded files

Create a task to delete uploaded files with a specified time range, types, and scenarios.

You can call this API five times per day. Proceed with caution.

• When a file is uploaded to NOS, a timestamp to the file is generated.

• Using different parameters, this API can perform the following four types of deleting tasks:

Required parameter	Description
Time range only	If a file has a timestamp within the specified time range (between startTime and endTime below), the file will be deleted.
Time range and file type	If a file has a timestamp within the specified time range and hits the specified type (contentType), the file will be deleted.
Time range and scenario tag	If a file has a timestamp within the specified time range and hits the scenario tag, the file will be deleted.
Time range, file type, and scenario tag	If a file has a timestamp within the specified time range and matches the type and scenario tag, the file will be deleted.

URL

httpPOST https://api.netease.im/nimserver/job/nos/del.action HTTP/1.1
Content-Type:application/x-www-form-urlencoded;charset=utf-8

Request parameters

• For information about how to set the header in a POST request, see API Call methods.

• The settings of the body in a POST request:

Parameter	Type	Required	Description
startTime	Long	Yes	Start time in milliseconds. The startTime must be less than the endTime and greater than 0. the difference between the startTime and endTime must be more than 1 day and less than 7 days.
endTime	Long	Yes	End time in milliseconds. The endTime must be earlier than the current day. Only files earlier than the current day can be deleted.
contentType	String	No	Type of files to be deleted. Files of the types specified in the contentType parameter are deleted. If the file to be deleted is a "image/png” file and the contentType parameter is set to "image", the file will be deleted.
tag	String	No	Files of the exact scenario tags are deleted. If a file contains the "usericon" tag, you can delete the file with the "usericon" tag.

Response parameters

Parameter	Type	Description
data	JSON	the data about the deleting task, including the task ID (taskid).

Example

cURL request example

curlcurl -X POST -H "CheckSum: 32dc17d0190f37037abc9feb749bbf049c9367e7" -H "AppKey: fe416640c8e8a72734219e*****d2547" -H "Nonce: 1" -H "CurTime: 1451200147" -H "Cache-Control: no-cache" -H "Postman-Token: a503b469-ee33-2c2e-8fb1-87b1fdf9f8f4" -H "Content-Type: application/x-www-form-urlencoded" -d 'startTime=1533988669286&endTime=1534420669286&contentType=image&tag=usericon' "http://223.252.220.223/nimserver/job/nos/del.action"

Response

HTTP response: JSON

json"Content‐type":"application/json;charset=utf‐8"
{
  "code": 200,
  "data":{
    "taskid":"1024030f3841440daf2af73672792f47"
  }
}

Status code

The status code is returned in the response body. For more information about status codes, see Status codes.