ext/ogg/gstoggmux.c: eos/bos debugging

Original commit message from CVS:

* ext/ogg/gstoggmux.c:
eos/bos debugging
* gst/tcp/gstmultifdsink.c:
* gst/tcp/gstmultifdsink.h:
* gst/tcp/gsttcp.c:
* gst/tcp/gsttcp.h:
* gst/tcp/gsttcpclientsink.c:
* gst/tcp/gsttcpclientsrc.c:
* gst/tcp/gsttcpserversink.c:
* gst/tcp/gsttcpserversrc.c:
improve reusability of elements after state changes and errors
make multifdsink throw away streamheaders when receiving new ones

ChangeLog

@@ -1,3 +1,18 @@
+2005-01-13  Thomas Vander Stichele  <thomas at apestaart dot org>
+
+	* ext/ogg/gstoggmux.c:
+	  eos/bos debugging
+	* gst/tcp/gstmultifdsink.c:
+	* gst/tcp/gstmultifdsink.h:
+	* gst/tcp/gsttcp.c:
+	* gst/tcp/gsttcp.h:
+	* gst/tcp/gsttcpclientsink.c:
+	* gst/tcp/gsttcpclientsrc.c:
+	* gst/tcp/gsttcpserversink.c:
+	* gst/tcp/gsttcpserversrc.c:
+	  improve reusability of elements after state changes and errors
+	  make multifdsink throw away streamheaders when receiving new ones
+
 2005-01-13  Ronald S. Bultje  <rbultje@ronald.bitfreak.net>
 
 	* ext/alsa/gstalsa.c: (gst_alsa_rates_probe):

ext/ogg/gstoggmux.c

@@ -1013,6 +1013,11 @@ gst_ogg_mux_loop (GstElement * element)
     pad->prev_delta = delta_unit;
 
     /* swap the packet in */
+    if (packet.e_o_s == 1)
+      GST_DEBUG_OBJECT (pad, "swapping in EOS packet");
+    if (packet.b_o_s == 1)
+      GST_DEBUG_OBJECT (pad, "swapping in BOS packet");
+
     ogg_stream_packetin (&pad->stream, &packet);
 
     /* don't need the old buffer anymore */

gst/tcp/gstmultifdsink.c

@@ -85,12 +85,12 @@ enum
   LAST_SIGNAL
 };
 
-/* this is really arbitrary choosen */
+/* this is really arbitrarily chosen */
 #define DEFAULT_PROTOCOL		 GST_TCP_PROTOCOL_TYPE_NONE
 #define DEFAULT_MODE			 GST_FDSET_MODE_POLL
 #define DEFAULT_BUFFERS_MAX		-1
 #define DEFAULT_BUFFERS_SOFT_MAX	-1
-#define DEFAULT_UNIT_TYPE	 	GST_UNIT_TYPE_BUFFERS
+#define DEFAULT_UNIT_TYPE		GST_UNIT_TYPE_BUFFERS
 #define DEFAULT_UNITS_MAX		-1
 #define DEFAULT_UNITS_SOFT_MAX		-1
 #define DEFAULT_RECOVER_POLICY		 GST_RECOVER_POLICY_NONE
@@ -948,6 +948,8 @@ gst_multifdsink_handle_client_write (GstMultiFdSink * sink,
   /* if we have streamheader buffers, and haven't sent them to this client
    * yet, send them out one by one */
   if (!client->streamheader_sent) {
+    GST_DEBUG_OBJECT (sink, "[fd %5d] Sending streamheader, %d buffers", fd,
+        g_slist_length (sink->streamheader));
     if (sink->streamheader) {
       GSList *l;
 
@@ -1458,6 +1460,18 @@ gst_multifdsink_chain (GstPad * pad, GstData * _data)
     return;
   }
 
+  GST_LOG_OBJECT (sink, "received buffer %p", buf);
+  /* if we get IN_CAPS buffers, but the previous buffer was not IN_CAPS,
+   * it means we're getting new streamheader buffers, and we should clear
+   * the old ones */
+  if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_IN_CAPS) &&
+      sink->previous_buffer_in_caps == FALSE) {
+    GST_DEBUG_OBJECT (sink,
+        "receiving new IN_CAPS buffers, clearing old streamheader");
+    g_slist_foreach (sink->streamheader, (GFunc) gst_data_unref, NULL);
+    g_slist_free (sink->streamheader);
+    sink->streamheader = NULL;
+  }
   /* if the incoming buffer is marked as IN CAPS, then we assume for now
    * it's a streamheader that needs to be sent to each new client, so we
    * put it on our internal list of streamheader buffers.
@@ -1465,6 +1479,7 @@ gst_multifdsink_chain (GstPad * pad, GstData * _data)
    * non IN_CAPS buffers so we properly keep track of clients that got
    * streamheaders. */
   if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_IN_CAPS)) {
+    sink->previous_buffer_in_caps = TRUE;
     GST_DEBUG_OBJECT (sink,
         "appending IN_CAPS buffer with length %d to streamheader",
         GST_BUFFER_SIZE (buf));
@@ -1472,6 +1487,7 @@ gst_multifdsink_chain (GstPad * pad, GstData * _data)
     return;
   }
 
+  sink->previous_buffer_in_caps = FALSE;
   /* queue the buffer */
   gst_multifdsink_queue_buffer (sink, buf);
 

gst/tcp/gstmultifdsink.h

@@ -115,7 +115,7 @@ typedef struct {
   guint64 last_activity_time;
   guint64 dropped_buffers;
   guint64 avg_queue_size;
-  
+
 } GstTCPClient;
 
 struct _GstMultiFdSink {
@@ -130,13 +130,15 @@ struct _GstMultiFdSink {
   GMutex *clientslock;	/* lock to protect the clients list */
   GList *clients;	/* list of clients we are serving */
   GHashTable *fd_hash;  /* index on fd to client */
-  
+
   GstFDSetMode mode;
   GstFDSet *fdset;
 
   GstFD control_sock[2];/* sockets for controlling the select call */
 
   GSList *streamheader; /* GSList of GstBuffers to use as streamheader */
+  gboolean previous_buffer_in_caps;
+
   GstTCPProtocolType protocol;
   guint mtu;
 

gst/tcp/gsttcp.c

@@ -45,7 +45,8 @@ GST_DEBUG_CATEGORY_EXTERN (tcp_debug);
 
 /* resolve host to IP address, throwing errors if it fails */
 /* host can already be an IP address */
-/* returns a newly allocated gchar * with the dotted ip address */
+/* returns a newly allocated gchar * with the dotted ip address,
+   or NULL, in which case it already fired an error. */
 gchar *
 gst_tcp_host_to_ip (GstElement * element, const gchar * host)
 {
@@ -140,9 +141,20 @@ gst_tcp_socket_read (int socket, void *buf, size_t count)
   return bytes_read;
 }
 
+/* close the socket and reset the fd.  Used to clean up after errors. */
+void
+gst_tcp_socket_close (int *socket)
+{
+  close (*socket);
+  *socket = -1;
+}
+
 /* read the gdp buffer header from the given socket
- * returns a GstData,
+ * returns:
- * representing the new GstBuffer to read data into, or an EOS event
+ * - a GstData representing a GstBuffer in which data should be read
+ * - a GstData representing a GstEvent
+ * - NULL, indicating a connection close or an error, to be handled with
+ *         EOS
  */
 GstData *
 gst_tcp_gdp_read_header (GstElement * this, int socket)
@@ -160,10 +172,9 @@ gst_tcp_gdp_read_header (GstElement * this, int socket)
   ret = gst_tcp_socket_read (socket, header, readsize);
   /* if we read 0 bytes, and we're blocking, we hit eos */
   if (ret == 0) {
-    GST_DEBUG ("blocking read returns 0, EOS");
+    GST_DEBUG ("blocking read returns 0, returning NULL");
     g_free (header);
-    gst_element_set_eos (GST_ELEMENT (this));
+    return NULL;
-    return GST_DATA (gst_event_new (GST_EVENT_EOS));
   }
   if (ret < 0) {
     GST_ELEMENT_ERROR (this, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);

gst/tcp/gsttcp.h

@@ -44,6 +44,8 @@ gchar * gst_tcp_host_to_ip (GstElement *element, const gchar *host);
 gint gst_tcp_socket_write (int socket, const void *buf, size_t count);
 gint gst_tcp_socket_read (int socket, void *buf, size_t count);
 
+void gst_tcp_socket_close (int *socket);
+
 GstData * gst_tcp_gdp_read_header (GstElement *this, int socket);
 GstCaps * gst_tcp_gdp_read_caps (GstElement *this, int socket);
 

gst/tcp/gsttcpclientsink.c

@@ -251,6 +251,10 @@ gst_tcpclientsink_set_property (GObject * object, guint prop_id,
 
   switch (prop_id) {
     case ARG_HOST:
+      if (!g_value_get_string (value)) {
+        g_warning ("host property cannot be NULL");
+        break;
+      }
       g_free (tcpclientsink->host);
       tcpclientsink->host = g_strdup (g_value_get_string (value));
       break;
@@ -317,8 +321,10 @@ gst_tcpclientsink_init_send (GstTCPClientSink * this)
 
   /* look up name if we need to */
   ip = gst_tcp_host_to_ip (GST_ELEMENT (this), this->host);
-  if (!ip)
+  if (!ip) {
+    gst_tcp_socket_close (&this->sock_fd);
     return FALSE;
+  }
   GST_DEBUG_OBJECT (this, "IP address for host %s is %s", this->host, ip);
 
   /* connect to server */
@@ -333,6 +339,7 @@ gst_tcpclientsink_init_send (GstTCPClientSink * this)
       sizeof (this->server_sin));
 
   if (ret) {
+    gst_tcp_socket_close (&this->sock_fd);
     switch (errno) {
       case ECONNREFUSED:
         GST_ELEMENT_ERROR (this, RESOURCE, OPEN_WRITE,

gst/tcp/gsttcpclientsrc.c

@@ -201,6 +201,36 @@ gst_tcpclientsrc_getcaps (GstPad * pad)
   return caps;
 }
 
+/* close the socket and associated resources
+ * unset OPEN flag
+ * used both to recover from errors and go to NULL state */
+static void
+gst_tcpclientsrc_close (GstTCPClientSrc * this)
+{
+  GST_DEBUG_OBJECT (this, "closing socket");
+  if (this->sock_fd != -1) {
+    close (this->sock_fd);
+    this->sock_fd = -1;
+  }
+  this->caps_received = FALSE;
+  if (this->caps) {
+    gst_caps_free (this->caps);
+    this->caps = NULL;
+  }
+  GST_FLAG_UNSET (this, GST_TCPCLIENTSRC_OPEN);
+}
+
+/* close socket and related items and return an EOS GstData
+ * called from _get */
+static GstData *
+gst_tcpclientsrc_eos (GstTCPClientSrc * src)
+{
+  GST_DEBUG_OBJECT (src, "going to EOS");
+  gst_element_set_eos (GST_ELEMENT (src));
+  gst_tcpclientsrc_close (src);
+  return GST_DATA (gst_event_new (GST_EVENT_EOS));
+}
+
 static GstData *
 gst_tcpclientsrc_get (GstPad * pad)
 {
@@ -214,14 +244,18 @@ gst_tcpclientsrc_get (GstPad * pad)
   g_return_val_if_fail (pad != NULL, NULL);
   g_return_val_if_fail (GST_IS_PAD (pad), NULL);
   src = GST_TCPCLIENTSRC (GST_OBJECT_PARENT (pad));
-  g_return_val_if_fail (GST_FLAG_IS_SET (src, GST_TCPCLIENTSRC_OPEN), NULL);
+  if (!GST_FLAG_IS_SET (src, GST_TCPCLIENTSRC_OPEN)) {
+    GST_DEBUG_OBJECT (src, "connection to server closed, cannot give data");
+    return NULL;
+  }
+  GST_LOG_OBJECT (src, "asked for a buffer");
 
   /* try to negotiate here */
   if (!gst_pad_is_negotiated (pad)) {
     if (GST_PAD_LINK_FAILED (gst_pad_renegotiate (pad))) {
       GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL), GST_ERROR_SYSTEM);
       gst_buffer_unref (buf);
-      return GST_DATA (gst_event_new (GST_EVENT_EOS));
+      return gst_tcpclientsrc_eos (src);
     }
   }
 
@@ -252,7 +286,7 @@ gst_tcpclientsrc_get (GstPad * pad)
       if (ret <= 0) {
         GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
             ("select failed: %s", g_strerror (errno)));
-        return GST_DATA (gst_event_new (GST_EVENT_EOS));
+        return gst_tcpclientsrc_eos (src);
       }
 
       /* ask how much is available for reading on the socket */
@@ -260,19 +294,24 @@ gst_tcpclientsrc_get (GstPad * pad)
       if (ret < 0) {
         GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
             ("ioctl failed: %s", g_strerror (errno)));
-        return GST_DATA (gst_event_new (GST_EVENT_EOS));
+        return gst_tcpclientsrc_eos (src);
       }
       GST_LOG_OBJECT (src, "ioctl says %d bytes available", readsize);
       buf = gst_buffer_new_and_alloc (readsize);
       break;
     case GST_TCP_PROTOCOL_TYPE_GDP:
       if (!(data = gst_tcp_gdp_read_header (GST_ELEMENT (src), src->sock_fd))) {
-        GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
+        return gst_tcpclientsrc_eos (src);
-            ("Could not read data header through GDP"));
-        return GST_DATA (gst_event_new (GST_EVENT_EOS));
       }
-      if (GST_IS_EVENT (data))
+      if (GST_IS_EVENT (data)) {
+        /* if we got back an EOS event, then we should go into eos ourselves */
+        if (GST_EVENT_TYPE (data) == GST_EVENT_EOS) {
+          gst_event_unref (data);
+          return gst_tcpclientsrc_eos (src);
+        }
         return data;
+      }
+
       buf = GST_BUFFER (data);
 
       GST_LOG_OBJECT (src, "Going to read data from socket into buffer %p",
@@ -285,20 +324,19 @@ gst_tcpclientsrc_get (GstPad * pad)
       break;
   }
 
-  GST_LOG_OBJECT (src, "Reading %d bytes", readsize);
+  GST_LOG_OBJECT (src, "Reading %d bytes into buffer", readsize);
   ret = gst_tcp_socket_read (src->sock_fd, GST_BUFFER_DATA (buf), readsize);
   if (ret < 0) {
     GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
     gst_buffer_unref (buf);
-    return GST_DATA (gst_event_new (GST_EVENT_EOS));
+    return gst_tcpclientsrc_eos (src);
   }
 
   /* if we read 0 bytes, and we're blocking, we hit eos */
   if (ret == 0) {
-    GST_DEBUG ("blocking read returns 0, EOS");
+    GST_DEBUG_OBJECT (src, "blocking read returns 0, EOS");
     gst_buffer_unref (buf);
-    gst_element_set_eos (GST_ELEMENT (src));
+    return gst_tcpclientsrc_eos (src);
-    return GST_DATA (gst_event_new (GST_EVENT_EOS));
   }
 
   readsize = ret;
@@ -360,6 +398,10 @@ gst_tcpclientsrc_set_property (GObject * object, guint prop_id,
 
   switch (prop_id) {
     case ARG_HOST:
+      if (!g_value_get_string (value)) {
+        g_warning ("host property cannot be NULL");
+        break;
+      }
       g_free (tcpclientsrc->host);
       tcpclientsrc->host = g_strdup (g_value_get_string (value));
       break;
@@ -418,11 +460,14 @@ gst_tcpclientsrc_init_receive (GstTCPClientSrc * this)
   }
   GST_DEBUG_OBJECT (this, "opened receiving client socket with fd %d",
       this->sock_fd);
+  GST_FLAG_SET (this, GST_TCPCLIENTSRC_OPEN);
 
   /* look up name if we need to */
   ip = gst_tcp_host_to_ip (GST_ELEMENT (this), this->host);
-  if (!ip)
+  if (!ip) {
+    gst_tcpclientsrc_close (this);
     return FALSE;
+  }
   GST_DEBUG_OBJECT (this, "IP address for host %s is %s", this->host, ip);
 
   /* connect to server */
@@ -437,6 +482,7 @@ gst_tcpclientsrc_init_receive (GstTCPClientSrc * this)
       sizeof (this->server_sin));
 
   if (ret) {
+    gst_tcpclientsrc_close (this);
     switch (errno) {
       case ECONNREFUSED:
         GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ,
@@ -455,7 +501,6 @@ gst_tcpclientsrc_init_receive (GstTCPClientSrc * this)
 
   this->send_discont = TRUE;
   this->buffer_after_discont = NULL;
-  GST_FLAG_SET (this, GST_TCPCLIENTSRC_OPEN);
 
   /* get the caps if we're using GDP */
   if (this->protocol == GST_TCP_PROTOCOL_TYPE_GDP) {
@@ -465,11 +510,13 @@ gst_tcpclientsrc_init_receive (GstTCPClientSrc * this)
 
       GST_DEBUG_OBJECT (this, "getting caps through GDP");
       if (!(caps = gst_tcp_gdp_read_caps (GST_ELEMENT (this), this->sock_fd))) {
+        gst_tcpclientsrc_close (this);
         GST_ELEMENT_ERROR (this, RESOURCE, READ, (NULL),
             ("Could not read caps through GDP"));
         return FALSE;
       }
       if (!GST_IS_CAPS (caps)) {
+        gst_tcpclientsrc_close (this);
         GST_ELEMENT_ERROR (this, RESOURCE, READ, (NULL),
             ("Could not read caps through GDP"));
         return FALSE;
@@ -483,34 +530,21 @@ gst_tcpclientsrc_init_receive (GstTCPClientSrc * this)
   return TRUE;
 }
 
-static void
-gst_tcpclientsrc_close (GstTCPClientSrc * this)
-{
-  if (this->sock_fd != -1) {
-    close (this->sock_fd);
-    this->sock_fd = -1;
-  }
-  this->caps_received = FALSE;
-  if (this->caps) {
-    gst_caps_free (this->caps);
-    this->caps = NULL;
-  }
-  GST_FLAG_UNSET (this, GST_TCPCLIENTSRC_OPEN);
-}
-
 static GstElementStateReturn
 gst_tcpclientsrc_change_state (GstElement * element)
 {
   g_return_val_if_fail (GST_IS_TCPCLIENTSRC (element), GST_STATE_FAILURE);
 
-  if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
+  /* if open and going to NULL, close it */
-    if (GST_FLAG_IS_SET (element, GST_TCPCLIENTSRC_OPEN))
+  if (GST_FLAG_IS_SET (element, GST_TCPCLIENTSRC_OPEN) &&
-      gst_tcpclientsrc_close (GST_TCPCLIENTSRC (element));
+      GST_STATE_PENDING (element) == GST_STATE_NULL) {
-  } else {
+    gst_tcpclientsrc_close (GST_TCPCLIENTSRC (element));
-    if (!GST_FLAG_IS_SET (element, GST_TCPCLIENTSRC_OPEN)) {
+  }
-      if (!gst_tcpclientsrc_init_receive (GST_TCPCLIENTSRC (element)))
+  /* if closed and going to a state higher than NULL, open it */
-        return GST_STATE_FAILURE;
+  if (!GST_FLAG_IS_SET (element, GST_TCPCLIENTSRC_OPEN) &&
-    }
+      GST_STATE_PENDING (element) > GST_STATE_NULL) {
+    if (!gst_tcpclientsrc_init_receive (GST_TCPCLIENTSRC (element)))
+      return GST_STATE_FAILURE;
   }
 
   if (GST_ELEMENT_CLASS (parent_class)->change_state)

gst/tcp/gsttcpserversink.c

@@ -218,6 +218,10 @@ gst_tcpserversink_set_property (GObject * object, guint prop_id,
 
   switch (prop_id) {
     case ARG_HOST:
+      if (!g_value_get_string (value)) {
+        g_warning ("host property cannot be NULL");
+        break;
+      }
       g_free (sink->host);
       sink->host = g_strdup (g_value_get_string (value));
       break;
@@ -273,6 +277,7 @@ gst_tcpserversink_init_send (GstMultiFdSink * parent)
   /* make address reusable */
   if (setsockopt (this->server_sock.fd, SOL_SOCKET, SO_REUSEADDR, &ret,
           sizeof (int)) < 0) {
+    gst_tcp_socket_close (&this->server_sock.fd);
     GST_ELEMENT_ERROR (this, RESOURCE, SETTINGS, (NULL),
         ("Could not setsockopt: %s", g_strerror (errno)));
     return FALSE;
@@ -280,6 +285,7 @@ gst_tcpserversink_init_send (GstMultiFdSink * parent)
   /* keep connection alive; avoids SIGPIPE during write */
   if (setsockopt (this->server_sock.fd, SOL_SOCKET, SO_KEEPALIVE, &ret,
           sizeof (int)) < 0) {
+    gst_tcp_socket_close (&this->server_sock.fd);
     GST_ELEMENT_ERROR (this, RESOURCE, SETTINGS, (NULL),
         ("Could not setsockopt: %s", g_strerror (errno)));
     return FALSE;
@@ -297,6 +303,7 @@ gst_tcpserversink_init_send (GstMultiFdSink * parent)
       sizeof (this->server_sin));
 
   if (ret) {
+    gst_tcp_socket_close (&this->server_sock.fd);
     switch (errno) {
       default:
         GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
@@ -313,6 +320,7 @@ gst_tcpserversink_init_send (GstMultiFdSink * parent)
   GST_DEBUG_OBJECT (this, "listening on server socket %d with queue of %d",
       this->server_sock.fd, TCP_BACKLOG);
   if (listen (this->server_sock.fd, TCP_BACKLOG) == -1) {
+    gst_tcp_socket_close (&this->server_sock.fd);
     GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
         ("Could not listen on server socket: %s", g_strerror (errno)));
     return FALSE;

gst/tcp/gsttcpserversrc.c

@@ -409,6 +409,10 @@ gst_tcpserversrc_set_property (GObject * object, guint prop_id,
 
   switch (prop_id) {
     case ARG_HOST:
+      if (!g_value_get_string (value)) {
+        g_warning ("host property cannot be NULL");
+        break;
+      }
       g_free (tcpserversrc->host);
       tcpserversrc->host = g_strdup (g_value_get_string (value));
       break;
@@ -483,8 +487,10 @@ gst_tcpserversrc_init_receive (GstTCPServerSrc * this)
   if (this->host) {
     gchar *host = gst_tcp_host_to_ip (GST_ELEMENT (this), this->host);
 
-    if (!host)
+    if (!host) {
+      gst_tcp_socket_close (&this->server_sock_fd);
       return FALSE;
+    }
 
     this->server_sin.sin_addr.s_addr = inet_addr (host);
     g_free (host);
@@ -497,6 +503,7 @@ gst_tcpserversrc_init_receive (GstTCPServerSrc * this)
       sizeof (this->server_sin));
 
   if (ret) {
+    gst_tcp_socket_close (&this->server_sock_fd);
     switch (errno) {
       default:
         GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
@@ -509,6 +516,7 @@ gst_tcpserversrc_init_receive (GstTCPServerSrc * this)
   GST_DEBUG_OBJECT (this, "listening on server socket %d with queue of %d",
       this->server_sock_fd, TCP_BACKLOG);
   if (listen (this->server_sock_fd, TCP_BACKLOG) == -1) {
+    gst_tcp_socket_close (&this->server_sock_fd);
     GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
         ("Could not listen on server socket: %s", g_strerror (errno)));
     return FALSE;
@@ -521,6 +529,7 @@ gst_tcpserversrc_init_receive (GstTCPServerSrc * this)
       accept (this->server_sock_fd, (struct sockaddr *) &this->client_sin,
       &this->client_sin_len);
   if (this->client_sock_fd == -1) {
+    gst_tcp_socket_close (&this->server_sock_fd);
     GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
         ("Could not accept client on server socket: %s", g_strerror (errno)));
     return FALSE;