From fe013979c247d37a85cb810b20f277fc80564e5c Mon Sep 17 00:00:00 2001
From: bachinger <bachinger@google.com>
Date: Thu, 2 Apr 2020 10:18:22 +0100
Subject: [PATCH] use an unmodifiable map with a copy of the license request
 headers

PiperOrigin-RevId: 304356504
---
 .../main/java/com/google/android/exoplayer2/MediaItem.java    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/library/core/src/main/java/com/google/android/exoplayer2/MediaItem.java b/library/core/src/main/java/com/google/android/exoplayer2/MediaItem.java
index 650e439f20..99b329ebf8 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/MediaItem.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/MediaItem.java
@@ -152,7 +152,7 @@ public final class MediaItem {
         @Nullable Map<String, String> licenseRequestHeaders) {
       this.drmLicenseRequestHeaders =
           licenseRequestHeaders != null && !licenseRequestHeaders.isEmpty()
-              ? licenseRequestHeaders
+              ? Collections.unmodifiableMap(new HashMap<>(licenseRequestHeaders))
               : Collections.emptyMap();
       return this;
     }
@@ -344,7 +344,7 @@ public final class MediaItem {
         List<Integer> drmSessionForClearTypes) {
       this.uuid = uuid;
       this.licenseUri = licenseUri;
-      this.requestHeaders = Collections.unmodifiableMap(new HashMap<>(requestHeaders));
+      this.requestHeaders = requestHeaders;
       this.multiSession = multiSession;
       this.playClearContentWithoutKey = playClearContentWithoutKey;
       this.sessionForClearTypes = drmSessionForClearTypes;