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https://gitlab.uni-freiburg.de/opensourcevdi/spice
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f683815ad5
(1) not sending anything to a migrated client till we recieve SPICE_MSGC_MIGRATE_END
(2) start a new client migration (handle client_migrate_info) only after SPICE_MSGC_MIGRATE_END
from the previous migration was received for this client
(3) use the correct ticket
Note: we assume the same channles are linked before and ater migration. i.e.,
SPICE_MSGC_MAIN_ATTACH_CHANNELS is not sent from the clients.
107 lines
4.6 KiB
C
107 lines
4.6 KiB
C
/*
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Copyright (C) 2009 Red Hat, Inc.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __MAIN_CHANNEL_H__
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#define __MAIN_CHANNEL_H__
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#include <stdint.h>
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#include <spice/vd_agent.h>
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#include "common/marshaller.h"
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#include "reds.h"
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#include "red_channel.h"
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/* This is a temporary measure for reds/main split - should not be in a header,
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* but private (although only reds.c includes main_channel.h) */
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struct MainMigrateData {
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uint32_t version;
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uint32_t serial;
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uint32_t ping_id;
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uint32_t agent_connected;
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uint32_t client_agent_started;
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uint32_t num_client_tokens;
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uint32_t send_tokens;
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uint32_t read_state;
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VDIChunkHeader vdi_chunk_header;
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uint32_t recive_len;
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uint32_t message_recive_len;
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uint32_t read_buf_len;
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uint32_t write_queue_size;
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};
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// TODO: Defines used to calculate receive buffer size, and also by reds.c
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// other options: is to make a reds_main_consts.h, to duplicate defines.
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#define REDS_AGENT_WINDOW_SIZE 10
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#define REDS_NUM_INTERNAL_AGENT_MESSAGES 1
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// approximate max receive message size for main channel
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#define RECEIVE_BUF_SIZE \
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(4096 + (REDS_AGENT_WINDOW_SIZE + REDS_NUM_INTERNAL_AGENT_MESSAGES) * SPICE_AGENT_MAX_DATA_SIZE)
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typedef struct MainChannel {
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RedChannel base;
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uint8_t recv_buf[RECEIVE_BUF_SIZE];
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RedsMigSpice mig_target; // TODO: add refs and release (afrer all clients completed migration in one way or the other?)
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int num_clients_mig_wait;
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} MainChannel;
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MainChannel *main_channel_init(void);
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RedClient *main_channel_get_client_by_link_id(MainChannel *main_chan, uint32_t link_id);
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/* This is a 'clone' from the reds.h Channel.link callback to allow passing link_id */
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MainChannelClient *main_channel_link(MainChannel *, RedClient *client,
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RedsStream *stream, uint32_t link_id, int migration, int num_common_caps,
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uint32_t *common_caps, int num_caps, uint32_t *caps);
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void main_channel_close(MainChannel *main_chan); // not destroy, just socket close
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void main_channel_push_mouse_mode(MainChannel *main_chan, int current_mode, int is_client_mouse_allowed);
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void main_channel_push_agent_connected(MainChannel *main_chan);
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void main_channel_push_agent_disconnected(MainChannel *main_chan);
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void main_channel_push_tokens(MainChannel *main_chan, uint32_t num_tokens);
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void main_channel_push_agent_data(MainChannel *main_chan, uint8_t* data, size_t len,
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spice_marshaller_item_free_func free_data, void *opaque);
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void main_channel_client_start_net_test(MainChannelClient *mcc);
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// TODO: huge. Consider making a reds_* interface for these functions
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// and calling from main.
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void main_channel_push_init(MainChannelClient *mcc, int display_channels_hint,
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int current_mouse_mode, int is_client_mouse_allowed, int multi_media_time,
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int ram_hint);
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void main_channel_push_notify(MainChannel *main_chan, uint8_t *mess, const int mess_len);
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void main_channel_push_migrate(MainChannel *main_chan);
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void main_channel_push_multi_media_time(MainChannel *main_chan, int time);
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int main_channel_getsockname(MainChannel *main_chan, struct sockaddr *sa, socklen_t *salen);
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int main_channel_getpeername(MainChannel *main_chan, struct sockaddr *sa, socklen_t *salen);
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uint32_t main_channel_client_get_link_id(MainChannelClient *mcc);
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int main_channel_client_is_low_bandwidth(MainChannelClient *mcc);
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uint64_t main_channel_client_get_bitrate_per_sec(MainChannelClient *mcc);
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int main_channel_is_connected(MainChannel *main_chan);
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RedChannelClient* main_channel_client_get_base(MainChannelClient* mcc);
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/* switch host migration */
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void main_channel_migrate_switch(MainChannel *main_chan, RedsMigSpice *mig_target);
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/* semi seamless migration */
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/* returns the number of clients that we are waiting for their connection */
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int main_channel_migrate_connect(MainChannel *main_channel, RedsMigSpice *mig_target);
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void main_channel_migrate_cancel_wait(MainChannel *main_chan);
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/* returns the number of clients for which SPICE_MSG_MAIN_MIGRATE_END was sent*/
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int main_channel_migrate_complete(MainChannel *main_chan, int success);
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#endif
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