mirror of
https://github.com/ddnet/ddnet.git
synced 2024-11-11 02:28:18 +00:00
660 lines
14 KiB
C
660 lines
14 KiB
C
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <engine/system.h>
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#include <engine/config.h>
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#include <engine/interface.h>
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#include <engine/protocol.h>
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#include <engine/snapshot.h>
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#include <engine/compression.h>
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#include <engine/versions.h>
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#include <engine/network.h>
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#include <engine/config.h>
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#include <engine/packer.h>
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#include <mastersrv/mastersrv.h>
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static SNAPBUILD builder;
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static int64 lasttick;
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static int64 lastheartbeat;
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static NETADDR4 master_server;
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static int biggest_snapshot;
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void *snap_new_item(int type, int id, int size)
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{
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dbg_assert(type >= 0 && type <=0xffff, "incorrect type");
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dbg_assert(id >= 0 && id <=0xffff, "incorrect id");
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return snapbuild_new_item(&builder, type, id, size);
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}
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typedef struct
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{
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short next;
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short state; // 0 = free, 1 = alloced, 2 = timed
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int timeout_tick;
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} SNAP_ID;
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static const int MAX_IDS = 8*1024; // should be lowered
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static SNAP_ID snap_ids[8*1024];
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static int snap_first_free_id;
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static int snap_first_timed_id;
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static int snap_last_timed_id;
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static int snap_id_usage;
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static int snap_id_inusage;
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static int snap_id_inited = 0;
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static void snap_init_id()
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{
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int i;
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for(i = 0; i < MAX_IDS; i++)
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{
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snap_ids[i].next = i+1;
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snap_ids[i].state = 0;
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}
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snap_ids[MAX_IDS-1].next = -1;
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snap_first_free_id = 0;
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snap_first_timed_id = -1;
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snap_last_timed_id = -1;
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snap_id_usage = 0;
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snap_id_inusage = 0;
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snap_id_inited = 1;
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}
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int snap_new_id()
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{
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dbg_assert(snap_id_inited == 1, "requesting id too soon");
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// process timed ids
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while(snap_first_timed_id != -1 && snap_ids[snap_first_timed_id].timeout_tick < server_tick())
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{
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int next_timed = snap_ids[snap_first_timed_id].next;
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// add it to the free list
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snap_ids[snap_first_timed_id].next = snap_first_free_id;
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snap_ids[snap_first_timed_id].state = 0;
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snap_first_free_id = snap_first_timed_id;
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// remove it from the timed list
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snap_first_timed_id = next_timed;
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if(snap_first_timed_id == -1)
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snap_last_timed_id = -1;
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snap_id_usage--;
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}
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int id = snap_first_free_id;
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dbg_assert(id != -1, "id error");
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snap_first_free_id = snap_ids[snap_first_free_id].next;
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snap_ids[id].state = 1;
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snap_id_usage++;
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snap_id_inusage++;
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return id;
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}
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void snap_free_id(int id)
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{
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dbg_assert(snap_ids[id].state == 1, "id is not alloced");
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snap_id_inusage--;
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snap_ids[id].state = 2;
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snap_ids[id].timeout_tick = server_tick() + server_tickspeed()*5;
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snap_ids[id].next = -1;
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if(snap_last_timed_id != -1)
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{
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snap_ids[snap_last_timed_id].next = id;
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snap_last_timed_id = id;
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}
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else
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{
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snap_first_timed_id = id;
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snap_last_timed_id = id;
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}
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}
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enum
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{
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SRVCLIENT_STATE_EMPTY = 0,
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SRVCLIENT_STATE_CONNECTING = 1,
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SRVCLIENT_STATE_INGAME = 2,
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};
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//
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typedef struct
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{
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// connection state info
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int state;
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int latency;
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int last_acked_snapshot;
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SNAPSTORAGE snapshots;
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char name[MAX_NAME_LENGTH];
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char clan[MAX_CLANNAME_LENGTH];
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} CLIENT;
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static CLIENT clients[MAX_CLIENTS];
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static int current_tick = 0;
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static NETSERVER *net;
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int server_tick()
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{
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return current_tick;
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}
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int server_tickspeed()
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{
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return SERVER_TICK_SPEED;
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}
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int server_init()
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{
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int i;
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for(i = 0; i < MAX_CLIENTS; i++)
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{
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clients[i].state = SRVCLIENT_STATE_EMPTY;
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clients[i].name[0] = 0;
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clients[i].clan[0] = 0;
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snapstorage_init(&clients[i].snapshots);
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}
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current_tick = 0;
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return 0;
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}
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int server_getclientinfo(int client_id, CLIENT_INFO *info)
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{
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dbg_assert(client_id >= 0 && client_id < MAX_CLIENTS, "client_id is not valid");
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dbg_assert(info != 0, "info can not be null");
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if(clients[client_id].state == SRVCLIENT_STATE_INGAME)
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{
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info->name = clients[client_id].name;
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info->latency = clients[client_id].latency;
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return 1;
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}
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return 0;
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}
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int server_send_msg(int client_id)
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{
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const MSG_INFO *info = msg_get_info();
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NETPACKET packet;
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mem_zero(&packet, sizeof(NETPACKET));
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packet.client_id = client_id;
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packet.data = info->data;
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packet.data_size = info->size;
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if(info->flags&MSGFLAG_VITAL)
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packet.flags = PACKETFLAG_VITAL;
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if(client_id == -1)
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{
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// broadcast
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int i;
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for(i = 0; i < MAX_CLIENTS; i++)
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if(clients[i].state == SRVCLIENT_STATE_INGAME)
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{
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packet.client_id = i;
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netserver_send(net, &packet);
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}
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}
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else
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netserver_send(net, &packet);
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return 0;
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}
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static void server_do_tick()
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{
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current_tick++;
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mods_tick();
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}
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static void server_do_snap()
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{
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mods_presnap();
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int i;
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for( i = 0; i < MAX_CLIENTS; i++)
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{
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if(clients[i].state == SRVCLIENT_STATE_INGAME)
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{
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char data[MAX_SNAPSHOT_SIZE];
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char deltadata[MAX_SNAPSHOT_SIZE];
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char compdata[MAX_SNAPSHOT_SIZE];
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snapbuild_init(&builder);
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mods_snap(i);
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// finish snapshot
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int snapshot_size = snapbuild_finish(&builder, data);
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// remove old snapshos
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// keep 1 seconds worth of snapshots
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snapstorage_purge_until(&clients[i].snapshots, current_tick-SERVER_TICK_SPEED);
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// save it the snapshot
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snapstorage_add(&clients[i].snapshots, current_tick, time_get(), snapshot_size, data);
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// find snapshot that we can preform delta against
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static SNAPSHOT emptysnap;
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emptysnap.data_size = 0;
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emptysnap.num_items = 0;
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SNAPSHOT *deltashot = &emptysnap;
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int deltashot_size;
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int delta_tick = -1;
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{
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deltashot_size = snapstorage_get(&clients[i].snapshots, clients[i].last_acked_snapshot, 0, &deltashot);
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if(deltashot_size >= 0)
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//{
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delta_tick = clients[i].last_acked_snapshot;
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//deltashot = (SNAPSHOT *)delta_data;
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//}
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}
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// create delta
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int deltasize = snapshot_create_delta(deltashot, (SNAPSHOT*)data, deltadata);
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if(deltasize)
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{
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// compress it
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unsigned char intdata[MAX_SNAPSHOT_SIZE];
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int intsize = intpack_compress(deltadata, deltasize, intdata);
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int compsize = zerobit_compress(intdata, intsize, compdata);
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snapshot_size = compsize;
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if(snapshot_size > biggest_snapshot)
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biggest_snapshot = snapshot_size;
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const int max_size = MAX_SNAPSHOT_PACKSIZE;
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int numpackets = (snapshot_size+max_size-1)/max_size;
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(void)numpackets;
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int n, left;
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for(n = 0, left = snapshot_size; left; n++)
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{
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int chunk = left < max_size ? left : max_size;
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left -= chunk;
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msg_pack_start_system(NETMSG_SNAP, 0);
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msg_pack_int(current_tick);
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msg_pack_int(current_tick-delta_tick); // compressed with
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msg_pack_int(chunk);
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msg_pack_raw(&compdata[n*max_size], chunk);
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msg_pack_end();
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server_send_msg(i);
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}
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}
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else
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{
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msg_pack_start_system(NETMSG_SNAPEMPTY, 0);
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msg_pack_int(current_tick);
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msg_pack_int(current_tick-delta_tick); // compressed with
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msg_pack_end();
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server_send_msg(i);
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}
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}
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}
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mods_postsnap();
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}
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static int new_client_callback(int cid, void *user)
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{
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clients[cid].state = SRVCLIENT_STATE_CONNECTING;
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clients[cid].name[0] = 0;
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clients[cid].clan[0] = 0;
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snapstorage_purge_all(&clients[cid].snapshots);
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clients[cid].last_acked_snapshot = -1;
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return 0;
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}
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static int del_client_callback(int cid, void *user)
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{
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clients[cid].state = SRVCLIENT_STATE_EMPTY;
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clients[cid].name[0] = 0;
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clients[cid].clan[0] = 0;
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snapstorage_purge_all(&clients[cid].snapshots);
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mods_client_drop(cid);
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return 0;
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}
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static void server_send_map(int cid)
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{
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msg_pack_start_system(NETMSG_MAP, MSGFLAG_VITAL);
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msg_pack_string(config.sv_map, 0);
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msg_pack_end();
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server_send_msg(cid);
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}
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static void server_send_heartbeat()
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{
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NETPACKET packet;
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packet.client_id = -1;
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packet.address = master_server;
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packet.flags = PACKETFLAG_CONNLESS;
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packet.data_size = sizeof(SERVERBROWSE_HEARTBEAT);
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packet.data = SERVERBROWSE_HEARTBEAT;
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netserver_send(net, &packet);
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}
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static void server_process_client_packet(NETPACKET *packet)
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{
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int cid = packet->client_id;
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int sys;
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int msg = msg_unpack_start(packet->data, packet->data_size, &sys);
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if(sys)
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{
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// system message
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if(msg == NETMSG_INFO)
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{
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char version[64];
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strncpy(version, msg_unpack_string(), 64);
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if(strcmp(version, TEEWARS_NETVERSION_STRING) != 0)
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{
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// OH FUCK! wrong version, drop him
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char reason[256];
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sprintf(reason, "wrong version. server is running %s.", TEEWARS_NETVERSION_STRING);
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netserver_drop(net, cid, reason);
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return;
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}
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strncpy(clients[cid].name, msg_unpack_string(), MAX_NAME_LENGTH);
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strncpy(clients[cid].clan, msg_unpack_string(), MAX_CLANNAME_LENGTH);
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const char *password = msg_unpack_string();
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const char *skin = msg_unpack_string();
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(void)password; // ignore these variables
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(void)skin;
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server_send_map(cid);
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}
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else if(msg == NETMSG_ENTERGAME)
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{
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if(clients[cid].state != SRVCLIENT_STATE_INGAME)
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{
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dbg_msg("server", "player as entered the game. cid=%x", cid);
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clients[cid].state = SRVCLIENT_STATE_INGAME;
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mods_client_enter(cid);
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}
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}
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else if(msg == NETMSG_INPUT)
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{
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int input[MAX_INPUT_SIZE];
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int size = msg_unpack_int();
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int i;
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for(i = 0; i < size/4; i++)
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input[i] = msg_unpack_int();
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mods_client_input(cid, input);
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}
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else if(msg == NETMSG_SNAPACK)
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{
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clients[cid].last_acked_snapshot = msg_unpack_int();
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int64 tagtime;
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if(snapstorage_get(&clients[cid].snapshots, clients[cid].last_acked_snapshot, &tagtime, 0) >= 0)
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clients[cid].latency = (int)(((time_get()-tagtime)*1000)/time_freq());
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}
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else
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{
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dbg_msg("server", "strange message cid=%d msg=%d data_size=%d", cid, msg, packet->data_size);
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}
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}
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else
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{
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// game message
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mods_message(msg, cid);
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}
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}
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static void server_send_serverinfo(NETADDR4 *addr)
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{
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NETPACKET packet;
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PACKER p;
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packer_reset(&p);
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packer_add_raw(&p, SERVERBROWSE_INFO, sizeof(SERVERBROWSE_INFO));
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packer_add_string(&p, config.sv_name, 128);
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packer_add_string(&p, config.sv_map, 128);
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packer_add_int(&p, netserver_max_clients(net)); // max_players
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int c = 0;
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int i;
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for(i = 0; i < MAX_CLIENTS; i++)
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{
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if(!clients[i].state != SRVCLIENT_STATE_EMPTY)
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c++;
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}
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packer_add_int(&p, c); // num_players
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packet.client_id = -1;
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packet.address = *addr;
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packet.flags = PACKETFLAG_CONNLESS;
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packet.data_size = packer_size(&p);
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packet.data = packer_data(&p);
|
||
|
netserver_send(net, &packet);
|
||
|
}
|
||
|
|
||
|
|
||
|
static void server_send_fwcheckresponse(NETADDR4 *addr)
|
||
|
{
|
||
|
NETPACKET packet;
|
||
|
packet.client_id = -1;
|
||
|
packet.address = *addr;
|
||
|
packet.flags = PACKETFLAG_CONNLESS;
|
||
|
packet.data_size = sizeof(SERVERBROWSE_FWRESPONSE);
|
||
|
packet.data = SERVERBROWSE_FWRESPONSE;
|
||
|
netserver_send(net, &packet);
|
||
|
}
|
||
|
|
||
|
static void server_pump_network()
|
||
|
{
|
||
|
netserver_update(net);
|
||
|
|
||
|
// process packets
|
||
|
NETPACKET packet;
|
||
|
while(netserver_recv(net, &packet))
|
||
|
{
|
||
|
if(packet.client_id == -1)
|
||
|
{
|
||
|
// stateless
|
||
|
if(packet.data_size == sizeof(SERVERBROWSE_GETINFO) &&
|
||
|
memcmp(packet.data, SERVERBROWSE_GETINFO, sizeof(SERVERBROWSE_GETINFO)) == 0)
|
||
|
{
|
||
|
server_send_serverinfo(&packet.address);
|
||
|
}
|
||
|
else if(packet.data_size == sizeof(SERVERBROWSE_FWCHECK) &&
|
||
|
memcmp(packet.data, SERVERBROWSE_FWCHECK, sizeof(SERVERBROWSE_FWCHECK)) == 0)
|
||
|
{
|
||
|
server_send_fwcheckresponse(&packet.address);
|
||
|
}
|
||
|
else if(packet.data_size == sizeof(SERVERBROWSE_FWOK) &&
|
||
|
memcmp(packet.data, SERVERBROWSE_FWOK, sizeof(SERVERBROWSE_FWOK)) == 0)
|
||
|
{
|
||
|
if(config.debug)
|
||
|
dbg_msg("server", "no firewall/nat problems detected");
|
||
|
}
|
||
|
else if(packet.data_size == sizeof(SERVERBROWSE_FWERROR) &&
|
||
|
memcmp(packet.data, SERVERBROWSE_FWERROR, sizeof(SERVERBROWSE_FWERROR)) == 0)
|
||
|
{
|
||
|
dbg_msg("server", "ERROR: the master server reports that clients can not connect to this server.");
|
||
|
dbg_msg("server", "ERROR: configure your firewall/nat to let trough udp on port %d.", 8303);
|
||
|
}
|
||
|
}
|
||
|
else
|
||
|
server_process_client_packet(&packet);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|
||
|
static int server_run()
|
||
|
{
|
||
|
biggest_snapshot = 0;
|
||
|
|
||
|
net_init(); // For Windows compatibility.
|
||
|
|
||
|
snap_init_id();
|
||
|
|
||
|
// load map
|
||
|
if(!map_load(config.sv_map))
|
||
|
{
|
||
|
dbg_msg("server", "failed to load map. mapname='%s'", config.sv_map);
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
// start server
|
||
|
NETADDR4 bindaddr;
|
||
|
|
||
|
if(strlen(config.sv_bindaddr) && net_host_lookup(config.sv_bindaddr, config.sv_port, &bindaddr) != 0)
|
||
|
{
|
||
|
// sweet!
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
mem_zero(&bindaddr, sizeof(bindaddr));
|
||
|
bindaddr.port = config.sv_port;
|
||
|
}
|
||
|
|
||
|
net = netserver_open(bindaddr, config.sv_max_clients, 0);
|
||
|
if(!net)
|
||
|
{
|
||
|
dbg_msg("server", "couldn't open socket. port might already be in use");
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
netserver_set_callbacks(net, new_client_callback, del_client_callback, 0);
|
||
|
|
||
|
dbg_msg("server", "server name is '%s'", config.sv_name);
|
||
|
dbg_msg("server", "masterserver is '%s'", config.masterserver);
|
||
|
if (net_host_lookup(config.masterserver, MASTERSERVER_PORT, &master_server) != 0)
|
||
|
{
|
||
|
// TODO: fix me
|
||
|
//master_server = netaddr4(0, 0, 0, 0, 0);
|
||
|
}
|
||
|
|
||
|
mods_init();
|
||
|
|
||
|
int64 time_per_tick = time_freq()/SERVER_TICK_SPEED;
|
||
|
int64 time_per_heartbeat = time_freq() * 30;
|
||
|
int64 starttime = time_get();
|
||
|
lasttick = starttime;
|
||
|
lastheartbeat = 0;
|
||
|
|
||
|
int64 reporttime = time_get();
|
||
|
int reportinterval = 3;
|
||
|
|
||
|
int64 simulationtime = 0;
|
||
|
int64 snaptime = 0;
|
||
|
int64 networktime = 0;
|
||
|
int64 totaltime = 0;
|
||
|
|
||
|
while(1)
|
||
|
{
|
||
|
int64 t = time_get();
|
||
|
if(t-lasttick > time_per_tick)
|
||
|
{
|
||
|
{
|
||
|
int64 start = time_get();
|
||
|
server_do_tick();
|
||
|
simulationtime += time_get()-start;
|
||
|
}
|
||
|
|
||
|
{
|
||
|
int64 start = time_get();
|
||
|
server_do_snap();
|
||
|
snaptime += time_get()-start;
|
||
|
}
|
||
|
|
||
|
lasttick += time_per_tick;
|
||
|
}
|
||
|
|
||
|
if(config.sv_sendheartbeats)
|
||
|
{
|
||
|
if (t > lastheartbeat+time_per_heartbeat)
|
||
|
{
|
||
|
server_send_heartbeat();
|
||
|
lastheartbeat = t+time_per_heartbeat;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
{
|
||
|
int64 start = time_get();
|
||
|
server_pump_network();
|
||
|
networktime += time_get()-start;
|
||
|
}
|
||
|
|
||
|
if(reporttime < time_get())
|
||
|
{
|
||
|
if(config.debug)
|
||
|
{
|
||
|
dbg_msg("server", "sim=%.02fms snap=%.02fms net=%.02fms total=%.02fms load=%.02f%% ids=%d/%d",
|
||
|
(simulationtime/reportinterval)/(double)time_freq()*1000,
|
||
|
(snaptime/reportinterval)/(double)time_freq()*1000,
|
||
|
(networktime/reportinterval)/(double)time_freq()*1000,
|
||
|
(totaltime/reportinterval)/(double)time_freq()*1000,
|
||
|
(totaltime)/reportinterval/(double)time_freq()*100.0f,
|
||
|
snap_id_inusage, snap_id_usage);
|
||
|
}
|
||
|
|
||
|
simulationtime = 0;
|
||
|
snaptime = 0;
|
||
|
networktime = 0;
|
||
|
totaltime = 0;
|
||
|
|
||
|
reporttime += time_freq()*reportinterval;
|
||
|
}
|
||
|
totaltime += time_get()-t;
|
||
|
thread_sleep(1);
|
||
|
}
|
||
|
|
||
|
mods_shutdown();
|
||
|
map_unload();
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
|
||
|
int main(int argc, char **argv)
|
||
|
{
|
||
|
dbg_msg("server", "starting...");
|
||
|
|
||
|
config_reset();
|
||
|
|
||
|
#ifdef CONF_PLATFORM_MACOSX
|
||
|
const char *config_filename = "~/.teewars";
|
||
|
#else
|
||
|
const char *config_filename = "default.cfg";
|
||
|
#endif
|
||
|
|
||
|
int i;
|
||
|
for(i = 1; i < argc; i++)
|
||
|
{
|
||
|
if(argv[i][0] == '-' && argv[i][1] == 'f' && argv[i][2] == 0 && argc - i > 1)
|
||
|
{
|
||
|
config_filename = argv[i+1];
|
||
|
i++;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
config_load(config_filename);
|
||
|
|
||
|
// parse arguments
|
||
|
for(i = 1; i < argc; i++)
|
||
|
config_set(argv[i]);
|
||
|
|
||
|
server_run();
|
||
|
return 0;
|
||
|
}
|