void NET_WriteQueryData(net_packet_t *packet, net_querydata_t *query) { NET_WriteString(packet, query->version); NET_WriteInt8(packet, query->server_state); NET_WriteInt8(packet, query->num_players); NET_WriteInt8(packet, query->max_players); NET_WriteInt8(packet, query->gamemode); NET_WriteInt8(packet, query->gamemission); NET_WriteString(packet, query->description); }
static void NET_CL_SendTics(int start, int end) { net_packet_t *packet; int i; if (!net_client_connected) { // Disconnected from server return; } if (start < 0) start = 0; // Build a new packet to send to the server packet = NET_NewPacket(512); NET_WriteInt16(packet, NET_PACKET_TYPE_GAMEDATA); // Write the start tic and number of tics. Send only the low byte // of start - it can be inferred by the server. NET_WriteInt8(packet, (gametic / ticdup) & 0xff); NET_WriteInt8(packet, start & 0xff); NET_WriteInt8(packet, end - start + 1); // Add the tics. for (i=start; i<=end; ++i) { net_server_send_t *sendobj; sendobj = &send_queue[i % BACKUPTICS]; NET_WriteInt16(packet, average_latency / FRACUNIT); NET_WriteTiccmdDiff(packet, &sendobj->cmd, lowres_turn); } // Send the packet NET_Conn_SendPacket(&client_connection, packet); // All done! NET_FreePacket(packet); // Acknowledgement has been sent as part of the packet need_to_acknowledge = false; }
void NET_WriteFullTiccmd(net_packet_t *packet, net_full_ticcmd_t *cmd, boolean lowres_turn) { unsigned int bitfield; int i; // Write the latency NET_WriteInt16(packet, cmd->latency); // Write "header" byte indicating which players are active // in this ticcmd bitfield = 0; for (i=0; i<NET_MAXPLAYERS; ++i) { if (cmd->playeringame[i]) { bitfield |= 1 << i; } } NET_WriteInt8(packet, bitfield); // Write player ticcmds for (i=0; i<NET_MAXPLAYERS; ++i) { if (cmd->playeringame[i]) { NET_WriteTiccmdDiff(packet, &cmd->cmds[i], lowres_turn); } } }
static void NET_CL_SendResendRequest(int start, int end) { net_packet_t *packet; unsigned int nowtime; int i; //printf("CL: Send resend %i-%i\n", start, end); packet = NET_NewPacket(64); NET_WriteInt16(packet, NET_PACKET_TYPE_GAMEDATA_RESEND); NET_WriteInt32(packet, start); NET_WriteInt8(packet, end - start + 1); NET_Conn_SendPacket(&client_connection, packet); NET_FreePacket(packet); nowtime = I_GetTimeMS(); // Save the time we sent the resend request for (i=start; i<=end; ++i) { int index; index = i - recvwindow_start; if (index < 0 || index >= BACKUPTICS) continue; recvwindow[index].resend_time = nowtime; } }
static void NET_WriteBlob(net_packet_t *packet, uint8_t *buf, size_t len) { int i; for (i=0; i<len; ++i) { NET_WriteInt8(packet, buf[i]); } }
static void NET_CL_SendSYN(void) { net_packet_t *packet; packet = NET_NewPacket(10); NET_WriteInt16(packet, NET_PACKET_TYPE_SYN); NET_WriteInt32(packet, NET_MAGIC_NUMBER); NET_WriteString(packet, PACKAGE_STRING); NET_WriteInt16(packet, gamemode); NET_WriteInt16(packet, gamemission); NET_WriteInt8(packet, lowres_turn); NET_WriteInt8(packet, drone); NET_WriteMD5Sum(packet, net_local_wad_md5sum); NET_WriteMD5Sum(packet, net_local_deh_md5sum); NET_WriteInt8(packet, net_local_is_freedoom); NET_WriteString(packet, net_player_name); NET_Conn_SendPacket(&client_connection, packet); NET_FreePacket(packet); }
static void NET_SV_SendTics(net_client_t *client, unsigned int start, unsigned int end) { net_packet_t *packet; unsigned int i; packet = NET_NewPacket(500); NET_WriteInt16(packet, NET_PACKET_TYPE_GAMEDATA); // Send the start tic and number of tics NET_WriteInt8(packet, start & 0xff); NET_WriteInt8(packet, end-start + 1); // Write the tics for (i=start; i<=end; ++i) { net_full_ticcmd_t *cmd; cmd = &client->sendqueue[i % BACKUPTICS]; if (i != cmd->seq) { I_Error("Wanted to send %i, but %i is in its place", i, cmd->seq); } // Add command NET_WriteFullTiccmd(packet, cmd, sv_settings.lowres_turn); } // Send packet NET_Conn_SendPacket(&client->connection, packet); NET_FreePacket(packet); }
void NET_WriteConnectData(net_packet_t *packet, net_connect_data_t *data) { NET_WriteInt8(packet, data->gamemode); NET_WriteInt8(packet, data->gamemission); NET_WriteInt8(packet, data->lowres_turn); NET_WriteInt8(packet, data->drone); NET_WriteInt8(packet, data->max_players); NET_WriteInt8(packet, data->is_freedoom); NET_WriteSHA1Sum(packet, data->wad_sha1sum); NET_WriteSHA1Sum(packet, data->deh_sha1sum); NET_WriteInt8(packet, data->player_class); }
static boolean NET_Conn_ReliablePacket(net_connection_t *conn, net_packet_t *packet) { unsigned int seq; net_packet_t *reply; boolean result; // Read the sequence number if (!NET_ReadInt8(packet, &seq)) { return true; } if (seq != (unsigned int)(conn->reliable_recv_seq & 0xff)) { // This is not the next expected packet in the sequence! // // Discard the packet. If we were smart, we would use a proper // sliding window protocol to do this, but I'm lazy. result = true; } else { // Now we can receive the next packet in the sequence. conn->reliable_recv_seq = (conn->reliable_recv_seq + 1) & 0xff; result = false; } // Send an acknowledgement // Note: this is braindead. It would be much more sensible to // include this in the next packet, rather than the overhead of // sending a complete packet just for one byte of information. reply = NET_NewPacket(10); NET_WriteInt16(reply, NET_PACKET_TYPE_RELIABLE_ACK); NET_WriteInt8(reply, conn->reliable_recv_seq & 0xff); NET_Conn_SendPacket(conn, reply); NET_FreePacket(reply); return result; }
static void NET_CL_SendGameDataACK(void) { net_packet_t *packet; packet = NET_NewPacket(10); NET_WriteInt16(packet, NET_PACKET_TYPE_GAMEDATA_ACK); NET_WriteInt8(packet, (gametic / ticdup) & 0xff); NET_Conn_SendPacket(&client_connection, packet); NET_FreePacket(packet); need_to_acknowledge = false; }
static void NET_SV_ParseLaunch(net_packet_t *packet, net_client_t *client) { net_packet_t *launchpacket; int num_players; unsigned int i; NET_Log("server: processing launch packet"); // Only the controller can launch the game. if (client != NET_SV_Controller()) { NET_Log("server: error: this client isn't the controller, %d != %d", client, NET_SV_Controller()); return; } // Can only launch when we are in the waiting state. if (server_state != SERVER_WAITING_LAUNCH) { NET_Log("server: error: not in waiting launch state, state=%d", server_state); return; } // Forward launch on to all clients. NET_Log("server: sending launch to all clients"); NET_SV_AssignPlayers(); num_players = NET_SV_NumPlayers(); for (i=0; i<MAXNETNODES; ++i) { if (!ClientConnected(&clients[i])) continue; launchpacket = NET_Conn_NewReliable(&clients[i].connection, NET_PACKET_TYPE_LAUNCH); NET_WriteInt8(launchpacket, num_players); } // Now in launch state. server_state = SERVER_WAITING_START; }
static void NET_SV_SendResendRequest(net_client_t *client, int start, int end) { net_packet_t *packet; net_client_recv_t *recvobj; int i; unsigned int nowtime; int index; NET_Log("server: send resend to %s for tics %d-%d", NET_AddrToString(client->addr), start, end); packet = NET_NewPacket(20); NET_WriteInt16(packet, NET_PACKET_TYPE_GAMEDATA_RESEND); NET_WriteInt32(packet, start); NET_WriteInt8(packet, end - start + 1); NET_Conn_SendPacket(&client->connection, packet); NET_FreePacket(packet); // Store the time we send the resend request nowtime = I_GetTimeMS(); for (i=start; i<=end; ++i) { index = i - recvwindow_start; if (index >= BACKUPTICS) { // Outside the range continue; } recvobj = &recvwindow[index][client->player_number]; recvobj->resend_time = nowtime; } }
void NET_WriteWaitData(net_packet_t *packet, net_waitdata_t *data) { int i; NET_WriteInt8(packet, data->num_players); NET_WriteInt8(packet, data->num_drones); NET_WriteInt8(packet, data->ready_players); NET_WriteInt8(packet, data->max_players); NET_WriteInt8(packet, data->is_controller); NET_WriteInt8(packet, data->consoleplayer); for (i = 0; i < data->num_players && i < NET_MAXPLAYERS; ++i) { NET_WriteString(packet, data->player_names[i]); NET_WriteString(packet, data->player_addrs[i]); } NET_WriteSHA1Sum(packet, data->wad_sha1sum); NET_WriteSHA1Sum(packet, data->deh_sha1sum); NET_WriteInt8(packet, data->is_freedoom); }
net_packet_t *NET_Conn_NewReliable(net_connection_t *conn, int packet_type) { net_packet_t *packet; net_reliable_packet_t *rp; net_reliable_packet_t **listend; // Generate a packet with the right header packet = NET_NewPacket(100); NET_WriteInt16(packet, packet_type | NET_RELIABLE_PACKET); // write the low byte of the send sequence number NET_WriteInt8(packet, conn->reliable_send_seq & 0xff); // Add to the list of reliable packets rp = malloc(sizeof(net_reliable_packet_t)); rp->packet = packet; rp->next = NULL; rp->seq = conn->reliable_send_seq; rp->last_send_time = -1; for (listend = &conn->reliable_packets; *listend != NULL; listend = &((*listend)->next)); *listend = rp; // Count along the sequence conn->reliable_send_seq = (conn->reliable_send_seq + 1) & 0xff; // Finished return packet; }
static void NET_SV_ParseGameStart(net_packet_t *packet, net_client_t *client) { net_gamesettings_t settings; net_packet_t *startpacket; int nowtime; int i; if (client != NET_SV_Controller()) { // Only the controller can start a new game return; } if (!NET_ReadSettings(packet, &settings)) { // Malformed packet return; } // Check the game settings are valid if (!NET_ValidGameSettings(sv_gamemode, sv_gamemission, &settings)) { return; } if (server_state != SERVER_WAITING_START) { // Can only start a game if we are in the waiting start state. return; } // Assign player numbers NET_SV_AssignPlayers(); // Check if anyone is recording a demo and set lowres_turn if so. settings.lowres_turn = false; for (i=0; i<MAXPLAYERS; ++i) { if (sv_players[i] != NULL && sv_players[i]->recording_lowres) { settings.lowres_turn = true; } } nowtime = I_GetTimeMS(); // Send start packets to each connected node for (i=0; i<MAXNETNODES; ++i) { if (!ClientConnected(&clients[i])) continue; clients[i].last_gamedata_time = nowtime; startpacket = NET_Conn_NewReliable(&clients[i].connection, NET_PACKET_TYPE_GAMESTART); NET_WriteInt8(startpacket, NET_SV_NumPlayers()); NET_WriteInt8(startpacket, clients[i].player_number); NET_WriteSettings(startpacket, &settings); } // Change server state server_state = SERVER_IN_GAME; sv_settings = settings; memset(recvwindow, 0, sizeof(recvwindow)); recvwindow_start = 0; }
static void NET_SV_SendWaitingData(net_client_t *client) { net_packet_t *packet; net_client_t *controller; int num_players; int i; NET_SV_AssignPlayers(); controller = NET_SV_Controller(); num_players = NET_SV_NumPlayers(); // time to send the client another status packet packet = NET_NewPacket(10); NET_WriteInt16(packet, NET_PACKET_TYPE_WAITING_DATA); // include the number of players waiting NET_WriteInt8(packet, num_players); // send the number of drone clients NET_WriteInt8(packet, NET_SV_NumDrones()); // indicate whether the client is the controller NET_WriteInt8(packet, client == controller); // send the player number of this client NET_WriteInt8(packet, client->player_number); // send the addresses of all players for (i=0; i<num_players; ++i) { char *addr; // name NET_WriteString(packet, sv_players[i]->name); // address addr = NET_AddrToString(sv_players[i]->addr); NET_WriteString(packet, addr); } // Send the WAD and dehacked checksums of the controlling client. if (controller != NULL) { NET_WriteMD5Sum(packet, controller->wad_md5sum); NET_WriteMD5Sum(packet, controller->deh_md5sum); NET_WriteInt8(packet, controller->is_freedoom); } else { NET_WriteMD5Sum(packet, client->wad_md5sum); NET_WriteMD5Sum(packet, client->deh_md5sum); NET_WriteInt8(packet, client->is_freedoom); } // send packet to client and free NET_Conn_SendPacket(&client->connection, packet); NET_FreePacket(packet); }
void NET_WriteTiccmdDiff(net_packet_t *packet, net_ticdiff_t *diff, boolean lowres_turn) { // Header NET_WriteInt8(packet, diff->diff); // Write the fields which are enabled: if (diff->diff & NET_TICDIFF_FORWARD) NET_WriteInt8(packet, diff->cmd.forwardmove); if (diff->diff & NET_TICDIFF_SIDE) NET_WriteInt8(packet, diff->cmd.sidemove); if (diff->diff & NET_TICDIFF_TURN) { if (lowres_turn) { NET_WriteInt8(packet, diff->cmd.angleturn / 256); } else { NET_WriteInt16(packet, diff->cmd.angleturn); } } if (diff->diff & NET_TICDIFF_BUTTONS) NET_WriteInt8(packet, diff->cmd.buttons); if (diff->diff & NET_TICDIFF_CONSISTANCY) NET_WriteInt8(packet, diff->cmd.consistancy); if (diff->diff & NET_TICDIFF_CHATCHAR) NET_WriteInt8(packet, diff->cmd.chatchar); if (diff->diff & NET_TICDIFF_RAVEN) { NET_WriteInt8(packet, diff->cmd.lookfly); NET_WriteInt8(packet, diff->cmd.arti); } if (diff->diff & NET_TICDIFF_STRIFE) { NET_WriteInt8(packet, diff->cmd.buttons2); NET_WriteInt8(packet, diff->cmd.inventory); } }
void NET_WriteSettings(net_packet_t *packet, net_gamesettings_t *settings) { int i; NET_WriteInt8(packet, settings->ticdup); NET_WriteInt8(packet, settings->extratics); NET_WriteInt8(packet, settings->deathmatch); NET_WriteInt8(packet, settings->nomonsters); NET_WriteInt8(packet, settings->fast_monsters); NET_WriteInt8(packet, settings->respawn_monsters); NET_WriteInt8(packet, settings->episode); NET_WriteInt8(packet, settings->map); NET_WriteInt8(packet, settings->skill); NET_WriteInt8(packet, settings->gameversion); NET_WriteInt8(packet, settings->lowres_turn); NET_WriteInt8(packet, settings->new_sync); NET_WriteInt32(packet, settings->timelimit); NET_WriteInt8(packet, settings->loadgame); NET_WriteInt8(packet, settings->random); NET_WriteInt8(packet, settings->num_players); NET_WriteInt8(packet, settings->consoleplayer); for (i = 0; i < settings->num_players; ++i) { NET_WriteInt8(packet, settings->player_classes[i]); } }