UploadTask.onHeadersReceived(listener: Function)

Requires:
BaseKit≥2.0.1
Platforms:
iOSAndroid

Description

Listen for the HTTP Response Header event. Fires earlier than the request completion event

Parameters

ParameterTypeRequiredDescription
YesEvent listener callback function

Return Value

None

Examples

import { downloadFile, uploadFile } from '@ray-js/ray'

// Listen to response headers: after obtaining the UploadTask, register onHeadersReceived to get a callback when the server's response headers arrive (earlier than completion)
downloadFile({
  url: "https://airtake-public-data-1254153901.cos.ap-shanghai.myqcloud.com/ttttestfile/test_image.jpg",
  success: ({ tempFilePath }) => {
    const task = uploadFile({
      url: "https://httpbin.org/post",
      filePath: tempFilePath,
      name: "file",
      success: () => console.log("Upload complete"),
      fail: error => console.error(error),
    });
    task.onHeadersReceived(e => {
      console.log("Response headers received:", JSON.stringify(e.header));
    });
  },
  fail: error => console.error(error),
});