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440 lines
13 KiB
440 lines
13 KiB
/*==LICENSE==* |
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program 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 |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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Additional permissions under GNU GPL version 3 section 7 |
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If you modify this Program, or any covered work, by linking or |
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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK, |
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NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent |
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK |
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(or a modified version of those libraries), |
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containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA, |
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PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG |
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JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the |
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licensors of this Program grant you additional |
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permission to convey the resulting work. Corresponding Source for a |
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non-source form of such a combination shall include the source code for |
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the parts of OpenSSL and IJG JPEG Library used as well as that of the covered |
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work. |
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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or by snail mail at: |
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Cyan Worlds, Inc. |
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14617 N Newport Hwy |
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Mead, WA 99021 |
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*==LICENSE==*/ |
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/***************************************************************************** |
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* |
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* $/Plasma20/Sources/Plasma/NucleusLib/pnNetCli/pnNetCli.h |
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* |
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***/ |
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#ifndef PLASMA20_SOURCES_PLASMA_NUCLEUSLIB_PNNETCLI_PNNETCLI_H |
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#define PLASMA20_SOURCES_PLASMA_NUCLEUSLIB_PNNETCLI_PNNETCLI_H |
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#include "pnEncryption/plBigNum.h" |
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/***************************************************************************** |
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* |
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* |
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How to create a message sender/receiver: |
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1. Define message ids |
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enum { |
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kMsgMoveObject, |
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kMsgPlayerJoin, |
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kMsgPing, |
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kMsgPingReply, |
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// etc. |
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}; |
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2. Define packed message structures |
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#include <PshPack1.h> |
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struct MoveObject { |
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uint32_t messageId; |
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uint32_t objectId; |
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float newPos[3]; |
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}; |
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struct PlayerJoin { |
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uint32_t messageId; |
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uint32_t playerId; |
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wchar_t name[kPlayerNameMaxLength]; |
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uint8_t data[kPlayerDataMaxLength]; |
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uint32_t vaultDataLen; |
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uint8_t vaultData[1]; // vaultData[vaultDataLen], actually |
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// no more fields after variable-length data |
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}; |
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struct Ping { |
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uint32_t messageId; |
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uint32_t pingTimeMs; |
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}; |
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struct PingReply { |
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uint32_t messageId; |
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uint32_t pingTimeMs; |
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} |
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#include <PopPack.h> |
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3. Define message fields |
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static const NetMsgField kFieldObjectId = NET_MSG_FIELD_DWORD(); |
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static const NetMsgField kFieldPlayerId = NET_MSG_FIELD_DWORD(); |
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static const NetMsgField kFieldObjectPos = NET_MSG_FIELD_FLOAT_ARRAY(3); |
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static const NetMsgField kFieldPlayerName = NET_MSG_FIELD_STRING(kPlayerNameMaxLength); |
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static const NetMsgField kFieldPlayerData = NET_MSG_FIELD_PTR(kPlayerDataMaxLength); |
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static const NetMsgField kFieldVaultDataLen = NET_MSG_FIELD_VAR_COUNT(kVaultDataMaxLength); |
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static const NetMsgField kFieldVaultData = NET_MSG_FIELD_VAR_PTR(); |
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static const NetMsgField kFieldPingTimeMs = NET_MSG_FIELD_DWORD(); |
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4. Build field and message description blocks |
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// MoveObject |
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static const NetMsgField s_moveObjectFields[] = { |
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kFieldObjectId, |
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kFieldObjectPos, |
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}; |
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static const NetMsg s_msgMoveObject = NET_MSG(kMsgMoveObject, s_msgMoveObjectFields); |
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// PlayerJoin |
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static const NetMsgField s_playerJoinFields[] = { |
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kFieldPlayerId, |
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kFieldPlayerName, |
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kFieldPlayerData, |
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kFieldVaultDataLen, |
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kFieldVaultData, |
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}; |
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static const NetMsg s_playerJoin = NET_MSG(kMsgPlayerJoin, s_msgPlayerJoin); |
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5. Register message description blocks |
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// for server: |
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static const NetMsgInitSend s_srvSend[] = { |
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{ s_moveObject }, |
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{ s_playerJoin }, |
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{ s_ping }, |
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}; |
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static const NetMsgInitRecv s_srvRecv[] = { |
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{ s_pingReply, RecvMsgPingReply }, |
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}; |
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s_srvConn = NetMsgProtocolRegister( |
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kNetProtocolCliToGame, |
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true, |
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s_srvSend, arrsize(s_srvSend), |
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s_srvRecv, arrsize(s_srvRecv) |
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); |
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// for client: |
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static const NetMsgInitSend s_cliSend[] = { |
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{ s_pingReply }, |
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}; |
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static const NetMsgInitRecv s_cliRecv[] = { |
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{ s_moveObject, RecvMsgMoveObject }, |
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{ s_playerJoin, RecvMsgPlayerJoin }, |
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{ s_ping, RecvMsgPing }, |
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}; |
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s_cliConn = NetMsgProtocolRegister( |
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kNetProtocolCliToGame, |
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false, |
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s_cliSend, arrsize(s_cliSend), |
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s_cliRecv, arrsize(s_cliRecv) |
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); |
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5. Send messages |
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static void SendMoveObject (NetCli client, const Object * obj) { |
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const uintptr_t msgMoveObject[] = { |
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kMsgMoveObject, |
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obj->id, |
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3, (uintptr_t) &obj->pos, |
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}; |
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NetCliSend(client, msgMoveObject, arrsize(msgMoveObject)); |
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} |
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static void SendPlayerJoin (NetCli client, const Player * player) { |
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const uintptr_t msgPlayerJoin[] = { |
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kMsgPlayerJoin, |
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player->name, |
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player->data, |
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player->vault->Count(), |
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player->vault->Ptr() |
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}; |
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NetCliSend(client, msgPlayerJoin, arrsize(msgPlayerJoin)); |
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}; |
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static void SendPing (NetCli player) { |
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const uintptr_t msgPing[] = { |
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kMsgPing, |
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hsTimer::GetMilliSeconds<uint32_t>(), |
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}; |
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NetCliSend(player, msgPing, arrsize(msgPing)); |
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} |
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6. Receive messages |
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bool RecvMsgPing (const uint8_t msg[], NetCli * from, void * param) { |
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Player * player = (Player *) param; |
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const Ping * ping = (const Ping *) msg; |
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const uintptr_t msgPingReply[] = { |
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kMsgPingReply, |
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ping->pingTimeMs, |
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}; |
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MsgConnSend(from, msgPingReply, arrsize(msgPingReply)); |
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} |
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* |
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***/ |
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/***************************************************************************** |
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* |
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* Constants |
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* |
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***/ |
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/***************************************************************************** |
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* |
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* Field definition types |
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* |
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***/ |
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enum ENetMsgFieldType { |
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// Compressable fields |
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kNetMsgFieldInteger, |
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kNetMsgFieldReal, |
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kNetMsgFieldString, // variable length unicode string |
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kNetMsgFieldData, // data with length <= sizeof(uint32_t) |
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kNetMsgFieldPtr, // pointer to fixed length data |
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kNetMsgFieldVarPtr, // pointer to variable length data |
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// Non-compressible fields (images, sounds, encrypted data, etc) |
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kNetMsgFieldRawData, // data with length <= sizeof(uint32_t) |
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kNetMsgFieldRawPtr, // pointer to fixed length data |
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kNetMsgFieldRawVarPtr, // pointer to variable length data |
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kNetMsgFieldVarCount, // count for kNetMsgFieldVarPtr and kNetMsgFieldRawVarPtr |
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kNumNetMsgFieldTypes |
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}; |
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struct NetMsgField { |
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ENetMsgFieldType type; // element type |
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unsigned count; // max number of elements |
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unsigned size; // element size |
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}; |
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struct NetMsg { |
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const char * name; |
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unsigned messageId; |
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const NetMsgField * fields; |
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unsigned count; |
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}; |
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// Opaque types |
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struct NetCli; |
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struct NetCliQueue; |
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/***************************************************************************** |
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* |
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* Msg and field definition macros |
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* |
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***/ |
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#define NET_MSG(msgId, msgFields) { #msgId, msgId, msgFields, arrsize(msgFields) } |
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#define NET_MSG_FIELD(type, count, size) { type, count, size } |
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#define NET_MSG_FIELD_BYTE() NET_MSG_FIELD(kNetMsgFieldInteger, 0, sizeof(uint8_t)) |
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#define NET_MSG_FIELD_WORD() NET_MSG_FIELD(kNetMsgFieldInteger, 0, sizeof(uint16_t)) |
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#define NET_MSG_FIELD_DWORD() NET_MSG_FIELD(kNetMsgFieldInteger, 0, sizeof(uint32_t)) |
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#define NET_MSG_FIELD_QWORD() NET_MSG_FIELD(kNetMsgFieldInteger, 0, sizeof(uint64_t)) |
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#define NET_MSG_FIELD_FLOAT() NET_MSG_FIELD(kNetMsgFieldReal, 0, sizeof(float)) |
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#define NET_MSG_FIELD_DOUBLE() NET_MSG_FIELD(kNetMsgFieldReal, 0, sizeof(double)) |
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#define NET_MSG_FIELD_BYTE_ARRAY(maxCount) NET_MSG_FIELD(kNetMsgFieldInteger, maxCount, sizeof(uint8_t)) |
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#define NET_MSG_FIELD_WORD_ARRAY(maxCount) NET_MSG_FIELD(kNetMsgFieldInteger, maxCount, sizeof(uint16_t)) |
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#define NET_MSG_FIELD_DWORD_ARRAY(maxCount) NET_MSG_FIELD(kNetMsgFieldInteger, maxCount, sizeof(uint32_t)) |
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#define NET_MSG_FIELD_QWORD_ARRAY(maxCount) NET_MSG_FIELD(kNetMsgFieldInteger, maxCount, sizeof(uint64_t)) |
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#define NET_MSG_FIELD_FLOAT_ARRAY(maxCount) NET_MSG_FIELD(kNetMsgFieldReal, maxCount, sizeof(float)) |
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#define NET_MSG_FIELD_DOUBLE_ARRAY(maxCount) NET_MSG_FIELD(kNetMsgFieldReal, maxCount, sizeof(double)) |
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#define NET_MSG_FIELD_STRING(maxLength) NET_MSG_FIELD(kNetMsgFieldString, maxLength, sizeof(wchar_t)) |
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#define NET_MSG_FIELD_DATA(maxBytes) NET_MSG_FIELD(kNetMsgFieldData, maxBytes, 1) |
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#define NET_MSG_FIELD_PTR(maxBytes) NET_MSG_FIELD(kNetMsgFieldPtr, maxBytes, 1) |
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#define NET_MSG_FIELD_RAW_DATA(maxBytes) NET_MSG_FIELD(kNetMsgFieldRawData, maxBytes, 1) |
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#define NET_MSG_FIELD_RAW_PTR(maxBytes) NET_MSG_FIELD(kNetMsgFieldRawPtr, maxBytes, 1) |
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#define NET_MSG_FIELD_VAR_PTR() NET_MSG_FIELD(kNetMsgFieldVarPtr, 0, 0) |
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#define NET_MSG_FIELD_RAW_VAR_PTR() NET_MSG_FIELD(kNetMsgFieldRawVarPtr, 0, 0) |
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#define NET_MSG_FIELD_VAR_COUNT(elemSize, maxCount) NET_MSG_FIELD(kNetMsgFieldVarCount, maxCount, elemSize) |
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/***************************************************************************** |
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* |
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* Message channels |
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* |
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***/ |
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struct NetMsgInitSend { |
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NetMsg msg; |
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}; |
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struct NetMsgInitRecv { |
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NetMsg msg; |
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bool (* recv)(const uint8_t msg[], unsigned bytes, void * param); |
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}; |
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void NetMsgProtocolRegister ( |
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uint32_t protocol, // from pnNetBase/pnNbProtocol.h |
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bool server, |
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const NetMsgInitSend sendMsgs[], // messages this program can send |
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uint32_t sendMsgCount, |
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const NetMsgInitRecv recvMsgs[], // messages this program can receive |
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uint32_t recvMsgCount, |
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// Diffie-Hellman keys |
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uint32_t dh_g, |
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const plBigNum& dh_xa, // client: dh_x server: dh_a |
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const plBigNum& dh_n |
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); |
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void NetMsgProtocolDestroy ( |
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uint32_t protocol, |
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bool server |
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); |
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/***************************************************************************** |
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* |
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* NetCliQueue |
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* |
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***/ |
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NetCliQueue * NetCliQueueCreate ( |
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unsigned flushTimeMs |
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); |
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void NetCliQueueDestroy ( |
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NetCliQueue * queue |
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); |
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void NetCliQueueFlush ( |
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NetCliQueue * queue |
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); |
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float NetCliQueueQueryFlush ( |
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NetCliQueue * queue |
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); |
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/***************************************************************************** |
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* |
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* NetCli |
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* |
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***/ |
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typedef bool (* FNetCliEncrypt) ( |
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ENetError error, |
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void * encryptParam |
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); |
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NetCli * NetCliConnectAccept ( |
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AsyncSocket sock, |
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unsigned protocol, |
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bool unbuffered, |
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FNetCliEncrypt encryptFcn, |
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unsigned seedBytes, // optional |
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const uint8_t seedData[], // optional |
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void * encryptParam // optional |
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); |
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#ifdef SERVER |
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NetCli * NetCliListenAccept ( |
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AsyncSocket sock, |
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unsigned protocol, |
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bool unbuffered, |
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FNetCliEncrypt encryptFcn, |
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unsigned seedBytes, // optional |
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const uint8_t seedData[], // optional |
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void * encryptParam // optional |
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); |
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#endif |
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#ifdef SERVER |
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void NetCliListenReject ( |
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AsyncSocket sock, |
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ENetError error |
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); |
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#endif |
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void NetCliClearSocket ( |
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NetCli * cli |
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); |
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void NetCliSetQueue ( |
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NetCli * cli, |
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NetCliQueue * queue |
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); |
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void NetCliDisconnect ( |
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NetCli * cli, |
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bool hardClose |
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); |
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void NetCliDelete ( |
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NetCli * cli, |
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bool deleteSocket |
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); |
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void NetCliFlush ( |
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NetCli * cli |
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); |
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void NetCliSend ( |
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NetCli * cli, |
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const uintptr_t msg[], |
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unsigned count |
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); |
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bool NetCliDispatch ( |
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NetCli * cli, |
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const uint8_t buffer[], |
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unsigned bytes, |
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void * param |
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); |
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#endif // PLASMA20_SOURCES_PLASMA_NUCLEUSLIB_PNNETCLI_PNNETCLI_H
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