Mercurial > pidgin3 / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libpurple/protocols/qq/sendqueue.c	Sat Jan 20 02:32:10 2007 +0000
@@ -0,0 +1,153 @@
+/**
+ * @file sendqueue.c
+ *
+ * gaim
+ *
+ * Gaim is the legal property of its developers, whose names are too numerous
+ * to list here.  Please refer to the COPYRIGHT file distributed with this
+ * source distribution.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "connection.h"
+#include "debug.h"
+#include "internal.h"
+#include "notify.h"
+#include "prefs.h"
+#include "request.h"
+
+#include "header_info.h"
+#include "qq_proxy.h"
+#include "sendqueue.h"
+
+#define QQ_RESEND_MAX               8	/* max resend per packet */
+
+typedef struct _gc_and_packet gc_and_packet;
+
+struct _gc_and_packet {
+	GaimConnection *gc;
+	qq_sendpacket *packet;
+};
+
+/* Remove a packet with send_seq from sendqueue */
+void qq_sendqueue_remove(qq_data *qd, guint16 send_seq)
+{
+	GList *list;
+	qq_sendpacket *p;
+
+	list = qd->sendqueue;
+	while (list != NULL) {
+		p = (qq_sendpacket *) (list->data);
+		if (p->send_seq == send_seq) {
+			qd->sendqueue = g_list_remove(qd->sendqueue, p);
+			g_free(p->buf);
+			g_free(p);
+			break;
+		}
+		list = list->next;
+	}
+}
+		
+/* clean up sendqueue and free all contents */
+void qq_sendqueue_free(qq_data *qd)
+{
+	qq_sendpacket *p;
+	gint i;
+
+	i = 0;
+	while (qd->sendqueue != NULL) {
+		p = (qq_sendpacket *) (qd->sendqueue->data);
+		qd->sendqueue = g_list_remove(qd->sendqueue, p);
+		g_free(p->buf);
+		g_free(p);
+		i++;
+	}
+	gaim_debug(GAIM_DEBUG_INFO, "QQ", "%d packets in sendqueue are freed!\n", i);
+}
+
+/* FIXME We shouldn't be dropping packets, but for now we have to because
+ * somewhere we're generating invalid packets that the server won't ack.
+ * Given enough time, a buildup of those packets would crash the client. */
+gboolean qq_sendqueue_timeout_callback(gpointer data)
+{
+	GaimConnection *gc;
+	qq_data *qd;
+	GList *list;
+	qq_sendpacket *p;
+	time_t now;
+	gint wait_time;
+
+	gc = (GaimConnection *) data;
+	qd = (qq_data *) gc->proto_data;
+	now = time(NULL);
+	list = qd->sendqueue;
+
+	/* empty queue, return TRUE so that timeout continues functioning */
+	if (qd->sendqueue == NULL)
+		return TRUE;
+
+	while (list != NULL) {	/* remove all packet whose resend_times == -1 */
+		p = (qq_sendpacket *) list->data;
+		if (p->resend_times == -1) {	/* to remove */
+			qd->sendqueue = g_list_remove(qd->sendqueue, p);
+			g_free(p->buf);
+			g_free(p);
+			list = qd->sendqueue;
+		} else {
+			list = list->next;
+		}
+	}
+
+	list = qd->sendqueue;
+	while (list != NULL) {
+		p = (qq_sendpacket *) list->data;
+		if (p->resend_times == QQ_RESEND_MAX) {	/* reach max */
+			switch (p->cmd) {
+			case QQ_CMD_KEEP_ALIVE:
+				if (qd->logged_in) {
+					gaim_debug(GAIM_DEBUG_ERROR, "QQ", "Connection lost!\n");
+					gaim_connection_error(gc, _("Connection lost"));
+					qd->logged_in = FALSE;
+				}
+				p->resend_times = -1;
+				break;
+			case QQ_CMD_LOGIN:
+			case QQ_CMD_REQUEST_LOGIN_TOKEN:
+				if (!qd->logged_in)	/* cancel login progress */
+					gaim_connection_error(gc, _("Login failed, no reply"));
+				p->resend_times = -1;
+				break;
+			default:{
+				gaim_debug(GAIM_DEBUG_WARNING, "QQ", 
+					"%s packet sent %d times but not acked. Not resending it.\n", 
+					qq_get_cmd_desc(p->cmd), QQ_RESEND_MAX);
+				}
+				p->resend_times = -1;
+			}
+		} else {	/* resend_times < QQ_RESEND_MAX, so sent it again */
+			wait_time = (gint) (QQ_SENDQUEUE_TIMEOUT / 1000);
+			if (difftime(now, p->sendtime) > (wait_time * (p->resend_times + 1))) {
+				qq_proxy_write(qd, p->buf, p->len);
+				p->resend_times++;
+				gaim_debug(GAIM_DEBUG_INFO,
+					   "QQ", "<<< [%05d] send again for %d times!\n", 
+					   p->send_seq, p->resend_times);
+			}
+		}
+		list = list->next;
+	}
+	return TRUE;		/* if we return FALSE, the timeout callback stops functioning */
+}