AVAssetDownloadURLSession, AVAssetDownloadTask not work

I`m trying to download AVAsset using AVAssetDownloadURLSession and AVAssetDownloadTask.

So, I used a sample code from Guideand Sample resource.

When I try to download a sample resource above, it works very well.

But when I try to download a resource from my local web server does not.


After some investigations, I knew that I have to set App Transport Security Settings property in Info.plist file include Exception Domains, NSExceptionAllowsInsecureHTTPLoads and NSIncludesSubdomains property for my local web server and I did.

Also, I edit hosts file in my mac like this '127.0.0.1 my.local.com' to let my iPhone demo app can connect to my local web server using domain in same local network.


After all setting in position, I set proxy information(local ip and port of my mac) in my iPhone from setting app and connect to the Wi-Fi that my mac connected.

Finally, I hit the download button in my demo app, but it still not work.


I think source code of my demo app is ok because sample resource downloading works fine,

so I guess my local web server setting is invalid but I don`t have any clue at all.


Below is error.

Error Domain=AVFoundationErrorDomain Code=-11853 "Playlist not received" UserInfo={NSDebugDescription=Playlist not received, NSLocalizedDescription=Cannot Parse, NSLocalizedFailureReason=This data is damaged, incomplete, or incompatible.}


Below is the request / response header from my local web server.


--------------------------------------------------------------------------------

192.168.2.5 - - [28/Jun/2017 09:07:34]

"GET http://my.flask.com:9999/download/HLS_sample_normal/prog_index.m3u8 HTTP/1.1" 200 -

User-Agent: AppleCoreMedia/1.0.0.14D27 (iPhone; U; CPU OS 10_2_1 like Mac OS X; ko_kr)

Connection: keep-alive

Host: my.flask.com:9999

Accept: */

Proxy-Connection: keep-alive

Accept-Language: ko-kr

X-Playback-Session-Id: 85AD5FBA-DA66-47D5-A6A4-E6956751C2B0

Accept-Encoding: gzip

--------------------------------------------------------------------------------

Content-Disposition: attachment; filename=prog_index.m3u8

Content-Length: 9254

Content-Type: application/x-mpegURL

Last-Modified: Wed, 28 Jun 2017 09:08:49 GMT

Cache-Control: public, max-age=100

Expires: Wed, 28 Jun 2017 00:10:29 GMT

ETag: "1498536228.0-9254-3656787697"

Date: Wed, 28 Jun 2017 00:08:49 GMT

Accept-Ranges: bytes


Any suggestions?