From 31dfc4959816aa4637e50c7f79660c75205ef84c Mon Sep 17 00:00:00 2001
From: Stefan Fritsch <sf@sfritsch.de>
Date: Sat, 3 Sep 2011 22:29:07 +0200
Subject: [PATCH] http: Fix decetion of range support in HTTP servers
currently libavformat only allows seeking if a request with "Range:
0-" results in a 206 reply from the HTTP server which includes a
Content-Range header. But according to RFC 2616, the server may also
reply with a normal 200 reply (which is more efficient for a request
for the whole file). In fact Apache HTTPD 2.2.20 has changed the
behaviour in this way and it looks like this change will be kept in
future versions. The fix for libavformat is easy: Also look at the
Accept-Ranges header.
---
libavformat/http.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavformat/http.c b/libavformat/http.c
index 95ba456ceaa..518c47d9c98 100644
--- a/libavformat/http.c
+++ b/libavformat/http.c
@@ -265,6 +265,8 @@ static int process_line(URLContext *h, char *line, int line_count,
s->filesize = atoll(slash+1);
}
h->is_streamed = 0; /* we _can_ in fact seek */
+ } else if (!strcasecmp (tag, "Accept-Ranges") && !strncmp (p, "bytes", 5)) {
+ h->is_streamed = 0;
} else if (!strcasecmp (tag, "Transfer-Encoding") && !strncasecmp(p, "chunked", 7)) {
s->filesize = -1;
s->chunksize = 0;
--
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