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souphttpsrc: check difference in time from the last socket read before changing blocksize

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If the pipeline consumes the data slower than the available network speed,
for example because sync=true, is useless to increase the blocksize and
reading in too big blocksizes can cause the connection to time out

Closes #463
This commit is contained in:
Nicola Murino 2018-12-17 19:18:43 +01:00
parent dab84b14dd
commit 1081a2ee50
2 changed files with 16 additions and 4 deletions
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18
ext/soup/gstsouphttpsrc.c
View file

@ -141,6 +141,7 @@ enum
#define REDUCE_BLOCKSIZE_LIMIT 0.20
#define REDUCE_BLOCKSIZE_COUNT 2
#define REDUCE_BLOCKSIZE_FACTOR 0.5
#define GROW_TIME_LIMIT (1 * GST_SECOND)
static void gst_soup_http_src_uri_handler_init (gpointer g_iface,
gpointer iface_data);
@ -452,6 +453,7 @@ gst_soup_http_src_reset (GstSoupHTTPSrc * src)
src->reduce_blocksize_count = 0;
src->increase_blocksize_count = 0;
src->last_socket_read_time = 0;
g_cancellable_reset (src->cancellable);
g_mutex_lock (&src->mutex);
@ -1634,10 +1636,15 @@ gst_soup_http_src_check_update_blocksize (GstSoupHTTPSrc * src,
{
guint blocksize = gst_base_src_get_blocksize (GST_BASE_SRC_CAST (src));
GST_LOG_OBJECT (src, "Checking to update blocksize. Read:%" G_GINT64_FORMAT
" blocksize:%u", bytes_read, blocksize);
gint64 time_since_last_read =
g_get_monotonic_time () * GST_USECOND - src->last_socket_read_time;
if (bytes_read >= blocksize * GROW_BLOCKSIZE_LIMIT) {
GST_LOG_OBJECT (src, "Checking to update blocksize. Read: %" G_GINT64_FORMAT
" bytes, blocksize: %u bytes, time since last read: %" GST_TIME_FORMAT,
bytes_read, blocksize, GST_TIME_ARGS (time_since_last_read));
if (bytes_read >= blocksize * GROW_BLOCKSIZE_LIMIT
&& time_since_last_read <= GROW_TIME_LIMIT) {
src->reduce_blocksize_count = 0;
src->increase_blocksize_count++;
@ -1647,7 +1654,8 @@ gst_soup_http_src_check_update_blocksize (GstSoupHTTPSrc * src,
gst_base_src_set_blocksize (GST_BASE_SRC_CAST (src), blocksize);
src->increase_blocksize_count = 0;
}
} else if (bytes_read < blocksize * REDUCE_BLOCKSIZE_LIMIT) {
} else if (bytes_read < blocksize * REDUCE_BLOCKSIZE_LIMIT
|| time_since_last_read > GROW_TIME_LIMIT) {
src->reduce_blocksize_count++;
src->increase_blocksize_count = 0;
@ -1736,6 +1744,8 @@ gst_soup_http_src_read_buffer (GstSoupHTTPSrc * src, GstBuffer ** outbuf)
gst_soup_http_src_check_update_blocksize (src, read_bytes);
src->last_socket_read_time = g_get_monotonic_time () * GST_USECOND;
/* If we're at the end of a range request, read again to let libsoup
* finalize the request. This allows to reuse the connection again later,
* otherwise we would have to cancel the message and close the connection

2
ext/soup/gstsouphttpsrc.h
View file

@ -115,6 +115,8 @@ struct _GstSoupHTTPSrc {
GCond have_headers_cond;
GstEvent *http_headers_event;
gint64 last_socket_read_time;
};
struct _GstSoupHTTPSrcClass {