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-rw-r--r--libavformat/http.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libavformat/http.c b/libavformat/http.c
index caedf1181e..d385011203 100644
--- a/libavformat/http.c
+++ b/libavformat/http.c
@@ -419,10 +419,10 @@ static int http_connect(URLContext *h, const char *path, const char *local_path,
if (!has_header(s->headers, "\r\nAccept: "))
len += av_strlcpy(headers + len, "Accept: */*\r\n",
sizeof(headers) - len);
- // Note: we send this on purpose even when s->off is 0,
+ // Note: we send this on purpose even when s->off is 0 when we're probing,
// since it allows us to detect more reliably if a (non-conforming)
// server supports seeking by analysing the reply headers.
- if (!has_header(s->headers, "\r\nRange: ") && !post)
+ if (!has_header(s->headers, "\r\nRange: ") && !post && (s->off > 0 || s->seekable == -1))
len += av_strlcatf(headers + len, sizeof(headers) - len,
"Range: bytes=%"PRId64"-\r\n", s->off);