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avformat/http: Add reconnect_at_eof and reconnect_streamed options

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They allow reconnecting endless live streams which fail with eof

Reviewed-by: Zhang Rui <bbcallen@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-09-06 19:58:10 +02:00
parent 83c6a880a6
commit 9bd68dea2b
2 changed files with 17 additions and 4 deletions
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7
doc/protocols.texi
View File

@ -260,6 +260,13 @@ Set timeout in microseconds of socket I/O operations used by the underlying low
operation. By default it is set to -1, which means that the timeout is
not specified.
@item reconnect_at_eof
If set then eof is treated like an error and causes reconnection, this is usefull
for live / endless streams.
@item reconnect_streamed
If set then even streamed/non seekable streams will be reconnected on errors.
@item mime_type
Export the MIME type.

14
libavformat/http.c
View File

@ -105,6 +105,8 @@ typedef struct HTTPContext {
int send_expect_100;
char *method;
int reconnect;
int reconnect_at_eof;
int reconnect_streamed;
int listen;
char *resource;
int reply_code;
@ -142,6 +144,8 @@ static const AVOption options[] = {
{ "end_offset", "try to limit the request to bytes preceding this offset", OFFSET(end_off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
{ "method", "Override the HTTP method or set the expected HTTP method from a client", OFFSET(method), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
{ "reconnect", "auto reconnect after disconnect before EOF", OFFSET(reconnect), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D },
{ "reconnect_at_eof", "auto reconnect at EOF", OFFSET(reconnect_at_eof), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D },
{ "reconnect_streamed", "auto reconnect streamed / non seekable streams", OFFSET(reconnect_streamed), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D },
{ "listen", "listen on HTTP", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, D | E },
{ "resource", "The resource requested by a client", OFFSET(resource), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
{ "reply_code", "The http status code to return to a client", OFFSET(reply_code), AV_OPT_TYPE_INT, { .i64 = 200}, INT_MIN, 599, E},
@ -1241,11 +1245,13 @@ static int http_read_stream(URLContext *h, uint8_t *buf, int size)
return http_buf_read_compressed(h, buf, size);
#endif /* CONFIG_ZLIB */
read_ret = http_buf_read(h, buf, size);
if (read_ret < 0 && s->reconnect && !h->is_streamed && s->filesize > 0 && s->off < s->filesize) {
if ( (read_ret < 0 && s->reconnect && (!h->is_streamed || s->reconnect_streamed) && s->filesize > 0 && s->off < s->filesize)
|| (read_ret == 0 && s->reconnect_at_eof && (!h->is_streamed || s->reconnect_streamed))) {
int64_t target = h->is_streamed ? 0 : s->off;
av_log(h, AV_LOG_INFO, "Will reconnect at %"PRId64" error=%s.\n", s->off, av_err2str(read_ret));
seek_ret = http_seek_internal(h, s->off, SEEK_SET, 1);
if (seek_ret != s->off) {
av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRId64".\n", s->off);
seek_ret = http_seek_internal(h, target, SEEK_SET, 1);
if (seek_ret != target) {
av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRId64".\n", target);
return read_ret;
}