android - Cordova-plugin-file-transfer FileTransfer download error code 3 - handshake failed in ionic application -


in ionic application error when try download pdf document our server using cordova file transfer plugin:

code snippet

public getdocument(url: string, filepath: string, filename: string):  promise<boolean> {  const filetransfer = new transfer(); let headers = this.createheader(); let requestoptions = new requestoptions({headers: headers});  return this.documentpromise = new promise((resolve, reject) => {   filetransfer.download(url, filepath + filename, true, requestoptions)     .then((entry) => {       resolve(entry.tourl());     })     .catch((error) => {       reject(error);     });

it jumps directly catch case , gives following

error

json.stringify(error)  >>  "code": 3,  "source": "https://asd.mysite.de/proxy/bill/app/pdfdocument",  "target": "file:///storage/emulated/0/android/data/subdomain.domainname.toplevdomain/files/document.pdf"  "http_status": null,  "body": null,  "exception": "handshake failed"

the "source" path reachable , , file downloadable other devices. on phone there exists path "/storage/emulated" , rest of path never created.

this happens on samsung a3 latest android version , on new huawei phone, not on other android phones or ios.

any ideas on why error might occur?

this running system:

cli packages: (d:\users\...)  @ionic/cli-utils  : 1.9.2 ionic (ionic cli) : 3.9.2

global packages:

cordova cli : 7.0.1

local packages:

@ionic/app-scripts : 2.1.3 cordova platforms  : android 6.2.3 browser 4.1.0 ionic framework    : ionic-angular 3.6.0

system:

android sdk tools : 26.0.2 node              : v6.11.0 npm               : 5.3.0 os                : windows 7

the relevant plugins set version:

    "cordova-plugin-file": "^4.3.3",     "cordova-plugin-file-opener2": "^2.0.19",     "cordova-plugin-file-transfer": "^1.6.3",     "cordova-plugin-whitelist": "^1.3.1",


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