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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* soup-queue.c: Asyncronous Callback-based HTTP Request Queue.
*
* Authors:
* Alex Graveley (alex@ximian.com)
*
* Copyright (C) 2000-2002, Ximian, Inc.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "soup-queue.h"
#include "soup-connection.h"
#include "soup-misc.h"
#include "soup-private.h"
static GSList *soup_active_requests = NULL, *soup_active_request_next = NULL;
static guint soup_queue_idle_tag = 0;
void
soup_queue_connect_cb (SoupContext *ctx,
SoupKnownErrorCode err,
SoupConnection *conn,
gpointer user_data)
{
SoupMessage *req = user_data;
req->priv->connect_tag = NULL;
if (err != SOUP_ERROR_OK) {
soup_message_set_error (req, err);
soup_message_issue_callback (req);
} else
soup_connection_start_request (conn, req);
return;
}
void
soup_queue_add_request (SoupMessage *req)
{
soup_active_requests = g_slist_prepend (soup_active_requests, req);
}
void
soup_queue_remove_request (SoupMessage *req)
{
if (soup_active_request_next && soup_active_request_next->data == req)
soup_queue_next_request ();
soup_active_requests = g_slist_remove (soup_active_requests, req);
}
SoupMessage *
soup_queue_first_request (void)
{
if (!soup_active_requests)
return NULL;
soup_active_request_next = soup_active_requests->next;
return soup_active_requests->data;
}
SoupMessage *
soup_queue_next_request (void)
{
SoupMessage *ret;
if (!soup_active_request_next)
return NULL;
ret = soup_active_request_next->data;
soup_active_request_next = soup_active_request_next->next;
return ret;
}
static gboolean
request_in_progress (SoupMessage *req)
{
if (!soup_active_requests)
return FALSE;
return g_slist_index (soup_active_requests, req) != -1;
}
static gboolean
soup_idle_handle_new_requests (gpointer unused)
{
SoupMessage *req = soup_queue_first_request ();
for (; req; req = soup_queue_next_request ()) {
if (req->status != SOUP_STATUS_QUEUED)
continue;
req->status = SOUP_STATUS_CONNECTING;
if (req->connection)
soup_connection_start_request (req->connection, req);
else {
gpointer connect_tag;
connect_tag =
soup_context_get_connection (
req->priv->context,
soup_queue_connect_cb,
req);
if (connect_tag && request_in_progress (req))
req->priv->connect_tag = connect_tag;
}
}
soup_queue_idle_tag = 0;
return FALSE;
}
static void
soup_queue_initialize (void)
{
if (!soup_initialized)
soup_load_config (NULL);
if (!soup_queue_idle_tag)
soup_queue_idle_tag =
g_idle_add (soup_idle_handle_new_requests, NULL);
}
void
soup_queue_message (SoupMessage *req)
{
g_return_if_fail (SOUP_IS_MESSAGE (req));
if (!req->priv->context) {
soup_message_set_error_full (req,
SOUP_ERROR_CANCELLED,
"Attempted to queue a message "
"with no destination context");
soup_message_issue_callback (req);
return;
}
if (req->status != SOUP_STATUS_IDLE)
soup_message_cleanup (req);
switch (req->response.owner) {
case SOUP_BUFFER_USER_OWNED:
soup_message_set_error_full (req,
SOUP_ERROR_CANCELLED,
"Attempted to queue a message "
"with a user owned response "
"buffer.");
soup_message_issue_callback (req);
return;
case SOUP_BUFFER_SYSTEM_OWNED:
g_free (req->response.body);
break;
case SOUP_BUFFER_STATIC:
break;
}
req->response.owner = 0;
req->response.body = NULL;
req->response.length = 0;
soup_message_clear_headers (req->response_headers);
req->errorcode = 0;
req->errorclass = 0;
if (req->errorphrase) {
g_free ((gchar *) req->errorphrase);
req->errorphrase = NULL;
}
req->status = SOUP_STATUS_QUEUED;
soup_queue_add_request (req);
soup_queue_initialize ();
}
/**
* soup_queue_shutdown:
*
* Shut down the message queue by calling %soup_message_cancel on all active
* requests.
*/
void
soup_queue_shutdown (void)
{
SoupMessage *req;
soup_initialized = FALSE;
if (soup_queue_idle_tag) {
g_source_remove (soup_queue_idle_tag);
soup_queue_idle_tag = 0;
}
req = soup_queue_first_request ();
for (; req; req = soup_queue_next_request ())
soup_message_cancel (req);
}
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