mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-27 04:01:08 +00:00
rtsp: don't use sockets for blocking
Use the blocking and non-blocking API of the input/output streams instead of polling the sockets directly. This also allows us to simplify some code.
This commit is contained in:
Wim Taymans
parent
909e119a23
commit
4f660c388c
1 changed files with 144 additions and 261 deletions
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@ -293,9 +293,6 @@ gst_rtsp_connection_create_from_socket (GSocket * socket, const gchar * ip,
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g_return_val_if_fail (ip != NULL, GST_RTSP_EINVAL);
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g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
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/* set to non-blocking mode so that we can cancel the communication */
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g_socket_set_blocking (socket, FALSE);
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if (!collect_addresses (socket, &local_ip, NULL, FALSE, &err))
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goto getnameinfo_failed;
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@ -479,7 +476,6 @@ setup_tunneling (GstRTSPConnection * conn, GTimeVal * timeout, gchar * uri)
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goto connect_failed;
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socket = g_socket_connection_get_socket (connection);
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g_socket_set_blocking (socket, FALSE);
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/* get remote address */
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g_free (conn->remote_ip);
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@ -616,7 +612,6 @@ gst_rtsp_connection_connect (GstRTSPConnection * conn, GTimeVal * timeout)
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/* get remote address */
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socket = g_socket_connection_get_socket (connection);
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g_socket_set_blocking (socket, FALSE);
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if (!collect_addresses (socket, &remote_ip, NULL, TRUE, &error))
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goto remote_address_failed;
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@ -813,9 +808,11 @@ gen_date_string (gchar * date_string, guint len)
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static GstRTSPResult
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write_bytes (GOutputStream * stream, const guint8 * buffer, guint * idx,
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guint size, GCancellable * cancellable)
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guint size, gboolean block, GCancellable * cancellable)
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{
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guint left;
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gssize r;
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GError *err = NULL;
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if (G_UNLIKELY (*idx > size))
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return GST_RTSP_ERROR;
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@ -823,31 +820,41 @@ write_bytes (GOutputStream * stream, const guint8 * buffer, guint * idx,
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left = size - *idx;
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while (left) {
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GError *err = NULL;
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gssize r;
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r = g_pollable_stream_write (stream, (gchar *) & buffer[*idx], left,
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block, cancellable, &err);
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if (G_UNLIKELY (r < 0))
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goto error;
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r = g_output_stream_write (stream, (gchar *) & buffer[*idx], left,
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cancellable, &err);
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if (G_UNLIKELY (r == 0)) {
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return GST_RTSP_EINTR;
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} else if (G_UNLIKELY (r < 0)) {
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) {
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g_clear_error (&err);
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return GST_RTSP_EINTR;
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}
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g_clear_error (&err);
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return GST_RTSP_ESYS;
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} else {
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left -= r;
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*idx += r;
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}
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}
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return GST_RTSP_OK;
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/* ERRORS */
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error:
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{
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if (G_UNLIKELY (r == 0))
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return GST_RTSP_EEOF;
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GST_DEBUG ("%s", err->message);
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
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g_clear_error (&err);
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return GST_RTSP_EINTR;
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} else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) {
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g_clear_error (&err);
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return GST_RTSP_EINTR;
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} else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_TIMED_OUT)) {
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g_clear_error (&err);
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return GST_RTSP_ETIMEOUT;
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}
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g_clear_error (&err);
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return GST_RTSP_ESYS;
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}
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}
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static gint
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fill_raw_bytes (GstRTSPConnection * conn, guint8 * buffer, guint size,
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GError ** err)
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gboolean block, GError ** err)
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{
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gint out = 0;
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@ -868,11 +875,17 @@ fill_raw_bytes (GstRTSPConnection * conn, guint8 * buffer, guint size,
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if (G_LIKELY (size > (guint) out)) {
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gssize r;
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r = g_input_stream_read (conn->input_stream, (gchar *) & buffer[out],
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size - out, conn->cancellable, err);
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if (r <= 0) {
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if (out == 0)
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r = g_pollable_stream_read (conn->input_stream,
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(gchar *) & buffer[out], size - out, block, conn->cancellable, err);
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if (G_UNLIKELY (r < 0)) {
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if (out == 0) {
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/* propagate the error */
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out = r;
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} else {
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/* we have some data ignore error */
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g_clear_error (err);
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}
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} else
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out += r;
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}
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@ -882,7 +895,7 @@ fill_raw_bytes (GstRTSPConnection * conn, guint8 * buffer, guint size,
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static gint
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fill_bytes (GstRTSPConnection * conn, guint8 * buffer, guint size,
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GError ** err)
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gboolean block, GError ** err)
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{
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DecodeCtx *ctx = conn->ctxp;
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gint out = 0;
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@ -904,7 +917,7 @@ fill_bytes (GstRTSPConnection * conn, guint8 * buffer, guint size,
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break;
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/* try to read more bytes */
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r = fill_raw_bytes (conn, in, sizeof (in), err);
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r = fill_raw_bytes (conn, in, sizeof (in), block, err);
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if (r <= 0) {
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if (out == 0)
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out = r;
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@ -917,16 +930,18 @@ fill_bytes (GstRTSPConnection * conn, guint8 * buffer, guint size,
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&ctx->save);
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}
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} else {
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out = fill_raw_bytes (conn, buffer, size, err);
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out = fill_raw_bytes (conn, buffer, size, block, err);
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}
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return out;
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}
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static GstRTSPResult
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read_bytes (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size)
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read_bytes (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size,
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gboolean block)
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{
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guint left;
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gint r;
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GError *err = NULL;
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if (G_UNLIKELY (*idx > size))
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@ -935,24 +950,35 @@ read_bytes (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size)
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left = size - *idx;
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while (left) {
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gint r;
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r = fill_bytes (conn, &buffer[*idx], left, block, &err);
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if (G_UNLIKELY (r <= 0))
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goto error;
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r = fill_bytes (conn, &buffer[*idx], left, &err);
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if (G_UNLIKELY (r == 0)) {
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return GST_RTSP_EEOF;
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} else if (G_UNLIKELY (r < 0)) {
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) {
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g_clear_error (&err);
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return GST_RTSP_EINTR;
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}
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g_clear_error (&err);
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return GST_RTSP_ESYS;
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} else {
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left -= r;
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*idx += r;
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}
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}
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return GST_RTSP_OK;
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/* ERRORS */
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error:
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{
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if (G_UNLIKELY (r == 0))
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return GST_RTSP_EEOF;
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GST_DEBUG ("%s", err->message);
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
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g_clear_error (&err);
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return GST_RTSP_EINTR;
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} else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) {
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g_clear_error (&err);
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return GST_RTSP_EINTR;
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} else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_TIMED_OUT)) {
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g_clear_error (&err);
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return GST_RTSP_ETIMEOUT;
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}
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g_clear_error (&err);
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return GST_RTSP_ESYS;
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}
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}
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/* The code below tries to handle clients using \r, \n or \r\n to indicate the
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@ -962,13 +988,14 @@ read_bytes (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size)
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* the method used in RTSP (and HTTP) to break long lines.
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*/
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static GstRTSPResult
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read_line (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size)
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read_line (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size,
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gboolean block)
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{
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GError *err = NULL;
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GstRTSPResult res;
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while (TRUE) {
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guint8 c;
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gint r;
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guint i;
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if (conn->read_ahead == READ_AHEAD_EOH) {
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/* the last call to read_line() already determined that we have reached
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@ -987,18 +1014,10 @@ read_line (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size)
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conn->read_ahead = 0;
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} else {
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/* read the next character */
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r = fill_bytes (conn, &c, 1, &err);
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if (G_UNLIKELY (r == 0)) {
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return GST_RTSP_EEOF;
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} else if (G_UNLIKELY (r < 0)) {
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) {
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g_clear_error (&err);
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return GST_RTSP_EINTR;
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}
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g_clear_error (&err);
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return GST_RTSP_ESYS;
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}
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i = 0;
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res = read_bytes (conn, &c, &i, 1, block);
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if (G_UNLIKELY (res != GST_RTSP_OK))
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return res;
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}
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/* special treatment of line endings */
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@ -1007,21 +1026,10 @@ read_line (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size)
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retry:
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/* need to read ahead one more character to know what to do... */
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r = fill_bytes (conn, &read_ahead, 1, &err);
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if (G_UNLIKELY (r == 0)) {
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return GST_RTSP_EEOF;
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} else if (G_UNLIKELY (r < 0)) {
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK)) {
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/* remember the original character we read and try again next time */
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if (conn->read_ahead == 0)
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conn->read_ahead = c;
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g_clear_error (&err);
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return GST_RTSP_EINTR;
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}
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g_clear_error (&err);
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return GST_RTSP_ESYS;
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}
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i = 0;
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res = read_bytes (conn, &read_ahead, &i, 1, block);
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if (G_UNLIKELY (res != GST_RTSP_OK))
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return res;
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if (read_ahead == ' ' || read_ahead == '\t') {
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if (conn->read_ahead == READ_AHEAD_CRLFCR) {
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@ -1106,63 +1114,23 @@ gst_rtsp_connection_write (GstRTSPConnection * conn, const guint8 * data,
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guint offset;
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GstClockTime to;
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GstRTSPResult res;
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GError *err = NULL;
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g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
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g_return_val_if_fail (data != NULL || size == 0, GST_RTSP_EINVAL);
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g_return_val_if_fail (conn->output_stream != NULL, GST_RTSP_EINVAL);
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to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
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offset = 0;
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while (TRUE) {
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/* try to write */
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res =
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write_bytes (conn->output_stream, data, &offset, size,
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conn->cancellable);
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if (G_LIKELY (res == GST_RTSP_OK))
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break;
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if (G_UNLIKELY (res != GST_RTSP_EINTR))
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goto write_error;
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/* not all is written, wait until we can write more */
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g_socket_set_timeout (conn->write_socket,
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(to + GST_SECOND - 1) / GST_SECOND);
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if (!g_socket_condition_wait (conn->write_socket,
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G_IO_OUT | G_IO_ERR | G_IO_HUP, conn->cancellable, &err)) {
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g_socket_set_timeout (conn->write_socket, 0);
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_BUSY)) {
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g_clear_error (&err);
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goto stopped;
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} else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_TIMED_OUT)) {
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g_clear_error (&err);
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goto timeout;
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}
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g_clear_error (&err);
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goto select_error;
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}
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g_socket_set_timeout (conn->write_socket, 0);
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}
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return GST_RTSP_OK;
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to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : 0;
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g_socket_set_timeout (conn->write_socket, (to + GST_SECOND - 1) / GST_SECOND);
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res =
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write_bytes (conn->output_stream, data, &offset, size, TRUE,
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conn->cancellable);
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g_socket_set_timeout (conn->write_socket, 0);
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/* ERRORS */
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timeout:
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{
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return GST_RTSP_ETIMEOUT;
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}
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select_error:
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{
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return GST_RTSP_ESYS;
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}
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stopped:
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{
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return GST_RTSP_EINTR;
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}
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write_error:
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{
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return res;
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}
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}
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static GString *
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message_to_string (GstRTSPConnection * conn, GstRTSPMessage * message)
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@ -1618,7 +1586,7 @@ normalize_line (guint8 * buffer)
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*/
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static GstRTSPResult
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build_next (GstRTSPBuilder * builder, GstRTSPMessage * message,
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GstRTSPConnection * conn)
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GstRTSPConnection * conn, gboolean block)
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{
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GstRTSPResult res;
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@ -1630,7 +1598,8 @@ build_next (GstRTSPBuilder * builder, GstRTSPMessage * message,
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builder->offset = 0;
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res =
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read_bytes (conn, (guint8 *) builder->buffer, &builder->offset, 1);
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read_bytes (conn, (guint8 *) builder->buffer, &builder->offset, 1,
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block);
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if (res != GST_RTSP_OK)
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goto done;
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@ -1653,7 +1622,8 @@ build_next (GstRTSPBuilder * builder, GstRTSPMessage * message,
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case STATE_DATA_HEADER:
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{
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res =
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read_bytes (conn, (guint8 *) builder->buffer, &builder->offset, 4);
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read_bytes (conn, (guint8 *) builder->buffer, &builder->offset, 4,
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block);
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if (res != GST_RTSP_OK)
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goto done;
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@ -1670,7 +1640,7 @@ build_next (GstRTSPBuilder * builder, GstRTSPMessage * message,
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{
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res =
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read_bytes (conn, builder->body_data, &builder->offset,
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builder->body_len);
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builder->body_len, block);
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if (res != GST_RTSP_OK)
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goto done;
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@ -1687,7 +1657,7 @@ build_next (GstRTSPBuilder * builder, GstRTSPMessage * message,
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case STATE_READ_LINES:
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{
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res = read_line (conn, builder->buffer, &builder->offset,
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sizeof (builder->buffer));
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sizeof (builder->buffer), block);
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if (res != GST_RTSP_OK)
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goto done;
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@ -1838,7 +1808,6 @@ gst_rtsp_connection_read (GstRTSPConnection * conn, guint8 * data, guint size,
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guint offset;
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GstClockTime to;
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GstRTSPResult res;
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GError *err = NULL;
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g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
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g_return_val_if_fail (data != NULL, GST_RTSP_EINVAL);
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@ -1850,59 +1819,14 @@ gst_rtsp_connection_read (GstRTSPConnection * conn, guint8 * data, guint size,
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offset = 0;
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/* configure timeout if any */
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to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
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to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : 0;
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while (TRUE) {
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res = read_bytes (conn, data, &offset, size);
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if (G_UNLIKELY (res == GST_RTSP_EEOF))
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goto eof;
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if (G_LIKELY (res == GST_RTSP_OK))
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break;
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if (G_UNLIKELY (res != GST_RTSP_EINTR))
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goto read_error;
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g_socket_set_timeout (conn->read_socket,
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(to + GST_SECOND - 1) / GST_SECOND);
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if (!g_socket_condition_wait (conn->read_socket,
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G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP, conn->cancellable,
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&err)) {
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g_socket_set_timeout (conn->read_socket, (to + GST_SECOND - 1) / GST_SECOND);
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res = read_bytes (conn, data, &offset, size, TRUE);
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g_socket_set_timeout (conn->read_socket, 0);
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_BUSY)) {
|
||||
g_clear_error (&err);
|
||||
goto stopped;
|
||||
} else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_TIMED_OUT)) {
|
||||
g_clear_error (&err);
|
||||
goto select_timeout;
|
||||
}
|
||||
g_clear_error (&err);
|
||||
goto select_error;
|
||||
}
|
||||
g_socket_set_timeout (conn->read_socket, 0);
|
||||
}
|
||||
return GST_RTSP_OK;
|
||||
|
||||
/* ERRORS */
|
||||
select_error:
|
||||
{
|
||||
return GST_RTSP_ESYS;
|
||||
}
|
||||
select_timeout:
|
||||
{
|
||||
return GST_RTSP_ETIMEOUT;
|
||||
}
|
||||
stopped:
|
||||
{
|
||||
return GST_RTSP_EINTR;
|
||||
}
|
||||
eof:
|
||||
{
|
||||
return GST_RTSP_EEOF;
|
||||
}
|
||||
read_error:
|
||||
{
|
||||
return res;
|
||||
}
|
||||
}
|
||||
|
||||
static GstRTSPMessage *
|
||||
gen_tunnel_reply (GstRTSPConnection * conn, GstRTSPStatusCode code,
|
||||
|
|
@ -1963,21 +1887,22 @@ gst_rtsp_connection_receive (GstRTSPConnection * conn, GstRTSPMessage * message,
|
|||
GstRTSPResult res;
|
||||
GstRTSPBuilder builder;
|
||||
GstClockTime to;
|
||||
GError *err = NULL;
|
||||
|
||||
g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
|
||||
g_return_val_if_fail (message != NULL, GST_RTSP_EINVAL);
|
||||
g_return_val_if_fail (conn->read_socket != NULL, GST_RTSP_EINVAL);
|
||||
|
||||
/* configure timeout if any */
|
||||
to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
|
||||
to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : 0;
|
||||
|
||||
g_socket_set_timeout (conn->read_socket, (to + GST_SECOND - 1) / GST_SECOND);
|
||||
memset (&builder, 0, sizeof (GstRTSPBuilder));
|
||||
while (TRUE) {
|
||||
res = build_next (&builder, message, conn);
|
||||
if (G_UNLIKELY (res == GST_RTSP_EEOF))
|
||||
goto eof;
|
||||
else if (G_LIKELY (res == GST_RTSP_OK)) {
|
||||
res = build_next (&builder, message, conn, TRUE);
|
||||
g_socket_set_timeout (conn->read_socket, 0);
|
||||
|
||||
if (G_UNLIKELY (res != GST_RTSP_OK))
|
||||
goto read_error;
|
||||
|
||||
if (!conn->manual_http) {
|
||||
if (message->type == GST_RTSP_MESSAGE_HTTP_REQUEST) {
|
||||
if (conn->tstate == TUNNEL_STATE_NONE &&
|
||||
|
|
@ -2011,55 +1936,12 @@ gst_rtsp_connection_receive (GstRTSPConnection * conn, GstRTSPMessage * message,
|
|||
}
|
||||
}
|
||||
|
||||
break;
|
||||
} else if (G_UNLIKELY (res != GST_RTSP_EINTR))
|
||||
goto read_error;
|
||||
|
||||
g_socket_set_timeout (conn->read_socket,
|
||||
(to + GST_SECOND - 1) / GST_SECOND);
|
||||
if (!g_socket_condition_wait (conn->read_socket,
|
||||
G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP, conn->cancellable,
|
||||
&err)) {
|
||||
g_socket_set_timeout (conn->read_socket, 0);
|
||||
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
|
||||
g_clear_error (&err);
|
||||
goto stopped;
|
||||
} else if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_TIMED_OUT)) {
|
||||
g_clear_error (&err);
|
||||
goto select_timeout;
|
||||
}
|
||||
g_clear_error (&err);
|
||||
goto select_error;
|
||||
}
|
||||
g_socket_set_timeout (conn->read_socket, 0);
|
||||
}
|
||||
|
||||
/* we have a message here */
|
||||
build_reset (&builder);
|
||||
|
||||
return GST_RTSP_OK;
|
||||
|
||||
/* ERRORS */
|
||||
select_error:
|
||||
{
|
||||
res = GST_RTSP_ESYS;
|
||||
goto cleanup;
|
||||
}
|
||||
select_timeout:
|
||||
{
|
||||
res = GST_RTSP_ETIMEOUT;
|
||||
goto cleanup;
|
||||
}
|
||||
stopped:
|
||||
{
|
||||
res = GST_RTSP_EINTR;
|
||||
goto cleanup;
|
||||
}
|
||||
eof:
|
||||
{
|
||||
res = GST_RTSP_EEOF;
|
||||
goto cleanup;
|
||||
}
|
||||
read_error:
|
||||
cleanup:
|
||||
{
|
||||
|
|
@ -2907,7 +2789,7 @@ gst_rtsp_source_dispatch (GSource * source, GSourceFunc callback G_GNUC_UNUSED,
|
|||
if (watch->readfd.revents & READ_ERR)
|
||||
goto read_error;
|
||||
|
||||
res = build_next (&watch->builder, &watch->message, watch->conn);
|
||||
res = build_next (&watch->builder, &watch->message, watch->conn, FALSE);
|
||||
if (res == GST_RTSP_EINTR)
|
||||
break;
|
||||
else if (G_UNLIKELY (res == GST_RTSP_EEOF)) {
|
||||
|
|
@ -3022,7 +2904,8 @@ gst_rtsp_source_dispatch (GSource * source, GSourceFunc callback G_GNUC_UNUSED,
|
|||
}
|
||||
|
||||
res = write_bytes (watch->conn->output_stream, watch->write_data,
|
||||
&watch->write_off, watch->write_size, watch->conn->cancellable);
|
||||
&watch->write_off, watch->write_size, FALSE,
|
||||
watch->conn->cancellable);
|
||||
g_mutex_unlock (&watch->mutex);
|
||||
|
||||
if (res == GST_RTSP_EINTR)
|
||||
|
|
@ -3343,7 +3226,7 @@ gst_rtsp_watch_write_data (GstRTSPWatch * watch, const guint8 * data,
|
|||
if (watch->messages->length == 0 && watch->write_data == NULL) {
|
||||
res =
|
||||
write_bytes (watch->conn->output_stream, data, &off, size,
|
||||
watch->conn->cancellable);
|
||||
FALSE, watch->conn->cancellable);
|
||||
if (res != GST_RTSP_EINTR) {
|
||||
if (id != NULL)
|
||||
*id = 0;
|
||||
|
|
|
|||
Loading…
Reference in a new issue