harmony 鸿蒙Network and Connection Development

2022-10-28
浏览 (511)

Network and Connection Development

What are the data formats supported by extraData in an HTTP request?

Applicable to: OpenHarmony SDK 3.2.2.5, stage model of API version 9

extraData indicates additional data in an HTTP request. It varies depending on the HTTP request method.

If the HTTP request uses a POST or PUT method, extraData serves as the content of the HTTP request.
If the HTTP request uses a GET, OPTIONS, DELETE, TRACE, or CONNECT method, extraData serves as a supplement to the HTTP request parameters and will be added to the URL when the request is sent.
If you pass in a string object, extraData contains the string encoded on your own.

What does error code 28 mean for an HTTP request?

Applicable to: OpenHarmony SDK 3.2.2.5, stage model of API version 9

Error code 28 refers to CURLE_OPERATION_TIMEDOUT, which means a cURL operation timeout. For details, see any HTTP status code description available.

Reference: Response Codes and Curl Error Codes

What does error code 6 mean for the response of \@ohos.net.http.d.ts?

Applicable to: OpenHarmony SDK 3.2.3.5

Error code 6 indicates a failure to resolve the host in the address. You can ping the URL carried in the request to check whether the host is accessible.

Reference: Response Codes and Curl Error Codes