avformat/hlsenc: set default http method to PUT when method is null

When the http method is not set, the method will use POST for ts,
PUT for m3u8, it is not unify, now set it unify.
This ticket id: #5315
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Reviewed-by: Moritz Barsnick <barsnick@gmx.net>
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

libavformat/hlsenc.c

@@ -242,7 +242,7 @@ fail:
     return -1;
 }
 
-static int hls_delete_old_segments(HLSContext *hls) {
+static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls) {
 
     HLSSegment *segment, *previous_segment = NULL;
     float playlist_duration = 0.0f;
@@ -251,6 +251,7 @@ static int hls_delete_old_segments(HLSContext *hls) {
     char *path = NULL;
     AVDictionary *options = NULL;
     AVIOContext *out = NULL;
+    const char *proto = NULL;
 
     segment = hls->segments;
     while (segment) {
@@ -300,7 +301,8 @@ static int hls_delete_old_segments(HLSContext *hls) {
             av_strlcat(path, segment->filename, path_size);
         }
 
-        if (hls->method) {
+        proto = avio_find_protocol_name(s->filename);
+        if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
             av_dict_set(&options, "method", "DELETE", 0);
             if ((ret = hls->avf->io_open(hls->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
                 goto fail;
@@ -321,7 +323,7 @@ static int hls_delete_old_segments(HLSContext *hls) {
             av_strlcpy(sub_path, dirname, sub_path_size);
             av_strlcat(sub_path, segment->sub_filename, sub_path_size);
 
-            if (hls->method) {
+            if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
                 av_dict_set(&options, "method", "DELETE", 0);
                 if ((ret = hls->avf->io_open(hls->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
                     av_free(sub_path);
@@ -576,7 +578,7 @@ static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, double
 #endif
             en->next = hls->old_segments;
             hls->old_segments = en;
-            if ((ret = hls_delete_old_segments(hls)) < 0)
+            if ((ret = hls_delete_old_segments(s, hls)) < 0)
                 return ret;
         } else
             av_free(en);
@@ -663,10 +665,17 @@ static void hls_free_segments(HLSSegment *p)
     }
 }
 
-static void set_http_options(AVDictionary **options, HLSContext *c)
+static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
 {
-    if (c->method)
+    const char *proto = avio_find_protocol_name(s->filename);
+    int http_base_proto = !av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https");
+
+    if (c->method) {
         av_dict_set(options, "method", c->method, 0);
+    } else if (proto && http_base_proto) {
+        av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
+        av_dict_set(options, "method", "PUT", 0);
+    }
 }
 
 static void write_m3u8_head_block(HLSContext *hls, AVIOContext *out, int version,
@@ -710,7 +719,7 @@ static int hls_window(AVFormatContext *s, int last)
     if (!use_rename && !warned_non_file++)
         av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
 
-    set_http_options(&options, hls);
+    set_http_options(s, &options, hls);
     snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->filename);
     if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
         goto fail;
@@ -947,7 +956,7 @@ static int hls_start(AVFormatContext *s)
     }
     c->number++;
 
-    set_http_options(&options, c);
+    set_http_options(s, &options, c);
 
     if (c->flags & HLS_TEMP_FILE) {
         av_strlcat(oc->filename, ".tmp", sizeof(oc->filename));
@@ -979,7 +988,7 @@ static int hls_start(AVFormatContext *s)
         if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
             goto fail;
     if (c->vtt_basename) {
-        set_http_options(&options, c);
+        set_http_options(s, &options, c);
         if ((err = s->io_open(s, &vtt_oc->pb, vtt_oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
             goto fail;
     }
@@ -1471,7 +1480,7 @@ static const AVOption options[] = {
     {"hls_playlist_type", "set the HLS playlist type", OFFSET(pl_type), AV_OPT_TYPE_INT, {.i64 = PLAYLIST_TYPE_NONE }, 0, PLAYLIST_TYPE_NB-1, E, "pl_type" },
     {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
     {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
-    {"method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL},  0, 0,    E},
+    {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL},  0, 0,    E},
     {"hls_start_number_source", "set source of first number in sequence", OFFSET(start_sequence_source_type), AV_OPT_TYPE_INT, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, 0, HLS_START_SEQUENCE_AS_FORMATTED_DATETIME, E, "start_sequence_source_type" },
     {"generic", "start_number value (default)", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
     {"epoch", "seconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },