sendqueue.c

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// START OF FILE
/*****************************************************************************/
#include "connection.h"         // GaimConnection
#include "debug.h"              // gaim_debug
#include "internal.h"           // _("get_text")
#include "notify.h"             // gaim_notify
#include "prefs.h"              // gaim_prefs_get_bool
#include "request.h"            // gaim_request_action

#include "header_info.h"        // cmd alias
#include "qq_proxy.h"           // qq_proxy_write
#include "sendqueue.h"

#define QQ_RESEND_MAX               5   // 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;

        g_return_if_fail(qd != NULL);

        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;
        }                       // while
}                               // qq_sendqueue_remove

/*****************************************************************************/
// 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);
}                               // qq_sendqueue_free

/*****************************************************************************/
// packet lost, agree to send again, (and will NOT prompt again)
// it is removed only when ack-ed by server
void _qq_send_again(gc_and_packet * gp)
{
        GaimConnection *gc;
        qq_data *qd;
        qq_sendpacket *packet;
        GList *list;

        g_return_if_fail(gp != NULL && gp->gc != NULL && gp->packet != NULL);
        g_return_if_fail(gp->gc->proto_data != NULL);

        gc = gp->gc;
        packet = gp->packet;
        qd = (qq_data *) gc->proto_data;

        list = g_list_find(qd->sendqueue, packet);
        if (list != NULL) {
                packet->resend_times = 0;
                packet->sendtime = time(NULL);
                qq_proxy_write(qd, packet->buf, packet->len);
        }
        g_free(gp);
}                               // _qq_send_again

/*****************************************************************************/
// packet lost, do not send again
void _qq_send_cancel(gc_and_packet * gp)
{
        GaimConnection *gc;
        qq_data *qd;
        qq_sendpacket *packet;
        GList *list;

        g_return_if_fail(gp != NULL && gp->gc != NULL && gp->packet != NULL);
        g_return_if_fail(gp->gc->proto_data != NULL);

        gc = gp->gc;
        packet = gp->packet;
        qd = (qq_data *) gc->proto_data;

        list = g_list_find(qd->sendqueue, packet);
        if (list != NULL)
                qq_sendqueue_remove(qd, packet->send_seq);

        g_free(gp);
}                               // _qq_send_cancel

/*****************************************************************************/
gboolean qq_sendqueue_timeout_callback(gpointer data)
{
        GaimConnection *gc;
        qq_data *qd;
        GList *list;
        qq_sendpacket *p;
        gc_and_packet *gp;
        time_t now;
        gint wait_time;
        gboolean need_action;

        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;
        }                       // while list

        list = qd->sendqueue;
        while (list != NULL) {
                p = (qq_sendpacket *) list->data;
                if (p->resend_times >= QQ_RESEND_MAX) {
                        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;
                                        }       // if logged_in
                                        p->resend_times = -1;
                                        break;
                                case QQ_CMD_LOGIN:
                                        if (!qd->logged_in)     // cancel logging progress
                                                gaim_connection_error(gc, _("Login failed, no reply!"));
                                        p->resend_times = -1;
                                        break;
                                case QQ_CMD_UPDATE_INFO:
                                        gaim_notify_error(gc, NULL,
                                                          _("Connection timeout!"), _("User info is not updated"));
                                        p->resend_times = -1;
                                        break;
                                default:{
                                                need_action =
                                                    gaim_prefs_get_bool("/plugins/prpl/qq/prompt_for_missing_packet");
                                                if (!need_action)
                                                        p->resend_times = -1;   // it will be removed next time
                                                else {  // prompt for action
                                                        gp = g_new0(gc_and_packet, 1);
                                                        gp->gc = gc;
                                                        gp->packet = p;
                                                        gaim_request_action
                                                            (gc, NULL,
                                                             _
                                                             ("Send packet"),
                                                             _
                                                             ("Packets lost, send again?"),
                                                             0, gp, 2,
                                                             _("Send"),
                                                             G_CALLBACK
                                                             (_qq_send_again),
                                                             _("Cancel"), G_CALLBACK(_qq_send_cancel));
                                                        p->resend_times++;      // will send once more, but only once
                                                }       // if !need_action
                                        }       // default
                                }       // switch
                        }       // resend_times == QQ_RESEND_MAX
                } 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);
                        }       // if difftime
                }               // if resend_times >= QQ_RESEND_MAX            
                list = list->next;
        }                       // whiile list
        return TRUE;            // if we return FALSE, the timeout callback stops functioning
}                               // qq_sendqueue_timeout_callback

/*****************************************************************************/
// END OF FILE

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