fix(podcast): resolve audio playback redirect loop with HTTPS enforcement and cache-buster

- Enforce HTTPS for podcast audio files in serializers and admin field
- Add cache-busting version query param to bypass Cloudflare 301 cached redirect
- Configure SECURE_PROXY_SSL_HEADER and USE_X_FORWARDED_HOST/PORT in settings
- Update nginx config with HTTP to HTTPS redirect, media range/CORS headers and X-Forwarded-Proto handling

apps/podcast/serializers.py

@@ -16,6 +16,29 @@ class PodcastCategoryListSerializer(serializers.ModelSerializer):
         return obj.playlists.filter(status=True, playlist_items__podcast__status=True).distinct().count()
 
 
+def build_podcast_audio_url(obj, request=None):
+    """
+    Build absolute HTTPS URL for podcast audio file with cache-busting query parameter.
+    Bypasses poisoned Cloudflare 301 cache redirects and enforces HTTPS.
+    """
+    if not obj.audio_file:
+        return None
+    url = obj.audio_file.url
+    if request:
+        full_url = request.build_absolute_uri(url)
+    else:
+        full_url = url
+
+    # 1. Force HTTPS protocol (except local dev)
+    if full_url.startswith('http://') and 'localhost' not in full_url and '127.0.0.1' not in full_url:
+        full_url = 'https://' + full_url[7:]
+
+    # 2. Bypass poisoned Cloudflare 301 redirect cache
+    separator = '&' if '?' in full_url else '?'
+    version = int(obj.updated_at.timestamp()) if hasattr(obj, 'updated_at') and obj.updated_at else getattr(obj, 'id', 1)
+    return f"{full_url}{separator}v={version}"
+
+
 class PodcastListSerializer(serializers.ModelSerializer):
     thumbnail = serializers.SerializerMethodField()
     audio_file = serializers.SerializerMethodField()
@@ -32,13 +55,8 @@ class PodcastListSerializer(serializers.ModelSerializer):
         return get_thumbs(obj.thumbnail, self.context.get('request'))
 
     def get_audio_file(self, obj):
-        """Get full URL for audio file if it exists"""
-        if obj.audio_file:
-            request = self.context.get('request')
-            if request:
-                return request.build_absolute_uri(obj.audio_file.url)
-            return obj.audio_file.url
-        return None
+        """Get full URL for audio file if it exists with HTTPS and cache-buster"""
+        return build_podcast_audio_url(obj, self.context.get('request'))
     
     def get_audio_time(self, obj):
         return format_media_time(obj.audio_time)
@@ -68,6 +86,7 @@ class PodcastDetailSerializer(serializers.ModelSerializer):
     in_user_playlist = serializers.SerializerMethodField()
     share_link = serializers.CharField(read_only=True)
     audio_time = serializers.SerializerMethodField()
+    audio_file = serializers.SerializerMethodField()
     class Meta:
         model = Podcast
         fields = ['id', 'title', 'slug', 'thumbnail', 'description', 
@@ -75,6 +94,10 @@ class PodcastDetailSerializer(serializers.ModelSerializer):
                   'categories', 'created_at', 'user_rate', 'average_rate', 'bookmark',
                   'is_in_playlist', 'playlist_podcasts', 'in_user_playlist', 'share_link']
 
+    def get_audio_file(self, obj):
+        """Get full URL for audio file if it exists with HTTPS and cache-buster"""
+        return build_podcast_audio_url(obj, self.context.get('request'))
+
     def get_thumbnail(self, obj):
         return get_thumbs(obj.thumbnail, self.context.get('request'))
 

apps/podcast/serializers_admin.py

@@ -34,9 +34,7 @@ class AbsoluteFileField(serializers.FileField):
             return None
         request = self.context.get("request")
         url = value.url if hasattr(value, "url") else str(value)
-        if request:
-            return request.build_absolute_uri(url)
-        return url
+        return absolute_https_url(url, request)
 
 
 class AdminPodcastCategorySerializer(serializers.ModelSerializer):

config/settings/base.py

@@ -31,6 +31,11 @@ environ.Env.read_env(os.path.join(BASE_DIR, '.env'))
 ALLOWED_HOSTS = env('DJANGO_ALLOWED_HOSTS').split(',')
 CSRF_TRUSTED_ORIGINS = env('DJANGO_TRUSTED_ORIGINS').split(',')
 
+# Reverse Proxy / SSL settings (Cloudflare & Nginx)
+SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
+USE_X_FORWARDED_HOST = True
+USE_X_FORWARDED_PORT = True
+
 
 # Quick-start development settings - unsuitable for production
 # See https://docs.djangoproject.com/en/5.0/howto/deployment/checklist/

config/settings/production.py

@@ -9,6 +9,8 @@ DEBUG = False
 CORS_ALLOW_ALL_ORIGINS = True
 
 SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
+USE_X_FORWARDED_HOST = True
+USE_X_FORWARDED_PORT = True
 
 
 

nginx/dovodi.conf

@@ -1,6 +1,19 @@
+# 1. Port 80 (HTTP) Server Block - Redirect all HTTP traffic to HTTPS
 server {
     listen 80;
-    listen 443 ssl;
+    listen [::]:80;
+    server_name dovodi.nwhco.ir dovodi.newhorizonco.uk dovodi.com test.dovodi.com;
+
+    # Immediate 301 redirect to HTTPS without caching redirect
+    location / {
+        return 301 https://$host$request_uri;
+    }
+}
+
+# 2. Port 443 (HTTPS) Server Block
+server {
+    listen 443 ssl http2;
+    listen [::]:443 ssl http2;
     server_name dovodi.nwhco.ir dovodi.newhorizonco.uk dovodi.com test.dovodi.com;
     ssl_certificate     /etc/nginx/certs/nwhco.pem;
     ssl_certificate_key /etc/nginx/certs/nwhco.key;
@@ -21,9 +34,8 @@ server {
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
         client_max_body_size 1200M;
-
     }
 
     location /fa/dovoodi/ {
@@ -31,7 +43,7 @@ server {
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
         client_max_body_size 1200M;
     }
 
@@ -41,7 +53,7 @@ server {
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
         client_max_body_size 1200M;
     }
 
@@ -54,7 +66,7 @@ server {
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
         client_max_body_size 1200M;
     }
 
@@ -64,7 +76,7 @@ server {
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
         client_max_body_size 1200M;
     }
 
@@ -74,7 +86,7 @@ server {
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
         proxy_set_header Authorization $http_authorization;
         proxy_pass_header Authorization;
         client_max_body_size 500M;
@@ -90,7 +102,7 @@ server {
         proxy_set_header Host $host;
         proxy_method $request_method;
         proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
 
         proxy_set_header Authorization $http_authorization;
         proxy_pass_header Authorization;
@@ -129,13 +141,20 @@ server {
     location /media/ {
         alias /home/app/web/imam_javad_mediafiles/;
 
+        # Range Requests for audio streaming / seeking in player
+        add_header Accept-Ranges bytes;
+
+        # CORS headers for media streaming
+        add_header Access-Control-Allow-Origin * always;
+        add_header Access-Control-Allow-Methods 'GET, HEAD, OPTIONS' always;
+        add_header Access-Control-Allow-Headers 'Range, Origin, Content-Type, Accept' always;
+
+        # Standard static cache
         expires 30d;
-        add_header Cache-Control "public, immutable";
+        add_header Cache-Control "public, no-transform";
 
-        # Enable CORS for media files
-        add_header Access-Control-Allow-Origin *;
-        add_header Access-Control-Allow-Methods "GET, OPTIONS";
-        add_header Access-Control-Allow-Headers "Origin, X-Requested-With, Content-Type, Accept";
+        access_log off;
+        log_not_found off;
     }
 
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