Fix HTTP headers not passed on caching requests

Author: sukov

Source/CachingPlayerItem.swift

@@ -42,6 +42,8 @@ public final class CachingPlayerItem: AVPlayerItem {
     private let initialScheme: String?
     private let saveFilePath: String
     private var customFileExtension: String?
+    /// HTTPHeaderFields set in avUrlAssetOptions using AVURLAssetHTTPHeaderFieldsKey
+    internal var urlRequestHeaders: [String: String]?
 
     /// Useful for keeping relevant model associated with CachingPlayerItem instance. This is a **strong** reference, be mindful not to create a **retain cycle**.
     public var passOnObject: Any?
@@ -110,6 +112,10 @@ public final class CachingPlayerItem: AVPlayerItem {
             assert(url.pathExtension.isEmpty == false, "CachingPlayerItem error: url pathExtension empty, pass the extension in `customFileExtension` parameter")
         }
 
+        if let headers = avUrlAssetOptions?["AVURLAssetHTTPHeaderFieldsKey"] as? [String: String] {
+            self.urlRequestHeaders = headers
+        }
+
         let asset = AVURLAsset(url: urlWithCustomScheme, options: avUrlAssetOptions)
         super.init(asset: asset, automaticallyLoadedAssetKeys: nil)
 

Source/ResourceLoaderDelegate.swift

@@ -105,8 +105,10 @@ final class ResourceLoaderDelegate: NSObject, AVAssetResourceLoaderDelegate, URL
 
         let configuration = URLSessionConfiguration.default
         configuration.requestCachePolicy = .reloadIgnoringLocalAndRemoteCacheData
+        var urlRequest = URLRequest(url: url)
+        owner?.urlRequestHeaders?.forEach { urlRequest.setValue($0.value, forHTTPHeaderField: $0.key) }
         session = URLSession(configuration: configuration, delegate: self, delegateQueue: nil)
-        session?.dataTask(with: url).resume()
+        session?.dataTask(with: urlRequest).resume()
     }
 
     func invalidateAndCancelSession() {