mirror of
https://github.com/solemnwarning/directplay-lite
synced 2024-12-30 16:45:37 +01:00
The threading model used for processing messages here will need redesigning; we can't allow the application to block the event loop when processing a message in case it calls something which won't return until a message is processed. Final model will probably use a pool of workers which will handle I/O one-at-a-time, blocking and allowing other threads to deal with the I/O when in the application message callback.
176 lines
9.5 KiB
C++
176 lines
9.5 KiB
C++
#ifndef DPLITE_DIRECTPLAY8PEER_HPP
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#define DPLITE_DIRECTPLAY8PEER_HPP
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#include <winsock2.h>
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#include <atomic>
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#include <dplay8.h>
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#include <map>
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#include <mutex>
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#include <objbase.h>
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#include <stdint.h>
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#include <windows.h>
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#include "AsyncHandleAllocator.hpp"
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#include "HostEnumerator.hpp"
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#include "network.hpp"
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#include "packet.hpp"
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#include "SendQueue.hpp"
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class DirectPlay8Peer: public IDirectPlay8Peer
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{
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private:
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std::atomic<unsigned int> * const global_refcount;
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ULONG local_refcount;
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PFNDPNMESSAGEHANDLER message_handler;
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PVOID message_handler_ctx;
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enum {
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STATE_NEW,
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STATE_INITIALISED,
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STATE_HOSTING,
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STATE_CONNECTED,
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} state;
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AsyncHandleAllocator handle_alloc;
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std::map<DPNHANDLE, HostEnumerator> host_enums;
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GUID instance_guid;
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GUID application_guid;
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DWORD max_players;
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std::wstring session_name;
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std::wstring password;
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std::vector<unsigned char> application_data;
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int udp_socket; /* UDP socket, used for general send/recv operations. */
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int listener_socket; /* TCP listener socket. */
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int discovery_socket; /* Discovery UDP sockets, RECIEVES broadcasts only. */
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unsigned char recv_buf[MAX_PACKET_SIZE];
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SendQueue udp_sq;
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SendQueue discovery_sq;
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HANDLE io_event;
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std::thread io_thread;
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std::atomic<bool> io_run;
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struct Player
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{
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enum PlayerState {
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/* Peer has connected to us, we're waiting for the initial message from it. */
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PS_INIT,
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/* We are the host and the peer has sent the initial connect request, we are waiting
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* for the application to process DPN_MSGID_INDICATE_CONNECT before we either add the
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* player to the session or reject it.
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*/
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PS_CONNECTING,
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/* This is a fully-fledged peer. */
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PS_CONNECTED,
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/* This peer is closing down. Discard any future messages received from it, but flush
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* anything waiting to be sent and keep the player DPNID valid until after the
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* application has processed the DPN_MSGID_DESTROY_PLAYER message and any outstanding
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* operations have completed or been cancelled.
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*/
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PS_CLOSING,
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};
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enum PlayerState state;
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/* This is the TCP socket to the peer, we may have connected to it, or it
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* may have connected to us depending who joined the session first, that
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* doesn't really matter.
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*/
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int sock;
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uint32_t ip; /* IPv4 address, network byte order. */
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uint16_t port; /* TCP and UDP port, host byte order. */
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DPNID id; /* Player ID, not initialised before state PS_CONNECTED. */
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unsigned char recv_buf[MAX_PACKET_SIZE];
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size_t recv_buf_cur;
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SendQueue sq;
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SendQueue::Buffer *sqb;
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const unsigned char *send_buf;
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size_t send_remain;
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Player(int sock, uint32_t ip, uint16_t port):
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state(PS_INIT), sock(sock), ip(ip), port(port), recv_buf_cur(0), send_buf(NULL) {}
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};
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std::list<Player> peers;
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std::map<DPNID, std::list<Player>::iterator> other_player_ids;
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/* Serialises access to:
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*
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* host_enums
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* pending_peers
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* peers
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*/
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std::mutex lock;
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void io_main();
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void io_udp_recv(int sock);
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void io_udp_send(int sock, SendQueue &q);
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void io_listener_accept(int sock);
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bool io_tcp_recv(Player *player);
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bool io_tcp_send(Player *player);
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void handle_host_enum_request(const PacketDeserialiser &pd, const struct sockaddr_in *from_addr);
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public:
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DirectPlay8Peer(std::atomic<unsigned int> *global_refcount);
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virtual ~DirectPlay8Peer();
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/* IUnknown */
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virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObject) override;
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virtual ULONG STDMETHODCALLTYPE AddRef(void) override;
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virtual ULONG STDMETHODCALLTYPE Release(void) override;
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/* IDirectPlay8Peer */
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virtual HRESULT STDMETHODCALLTYPE Initialize(PVOID CONST pvUserContext, CONST PFNDPNMESSAGEHANDLER pfn, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE EnumServiceProviders(CONST GUID* CONST pguidServiceProvider, CONST GUID* CONST pguidApplication, DPN_SERVICE_PROVIDER_INFO* CONST pSPInfoBuffer, DWORD* CONST pcbEnumData, DWORD* CONST pcReturned, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE CancelAsyncOperation(CONST DPNHANDLE hAsyncHandle, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE Connect(CONST DPN_APPLICATION_DESC* CONST pdnAppDesc, IDirectPlay8Address* CONST pHostAddr, IDirectPlay8Address* CONST pDeviceInfo, CONST DPN_SECURITY_DESC* CONST pdnSecurity, CONST DPN_SECURITY_CREDENTIALS* CONST pdnCredentials, CONST void* CONST pvUserConnectData, CONST DWORD dwUserConnectDataSize, void* CONST pvPlayerContext, void* CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE SendTo(CONST DPNID dpnid, CONST DPN_BUFFER_DESC* CONST prgBufferDesc, CONST DWORD cBufferDesc, CONST DWORD dwTimeOut, void* CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE GetSendQueueInfo(CONST DPNID dpnid, DWORD* CONST pdwNumMsgs, DWORD* CONST pdwNumBytes, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE Host(CONST DPN_APPLICATION_DESC* CONST pdnAppDesc, IDirectPlay8Address **CONST prgpDeviceInfo, CONST DWORD cDeviceInfo, CONST DPN_SECURITY_DESC* CONST pdnSecurity, CONST DPN_SECURITY_CREDENTIALS* CONST pdnCredentials, void* CONST pvPlayerContext, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE GetApplicationDesc(DPN_APPLICATION_DESC* CONST pAppDescBuffer, DWORD* CONST pcbDataSize, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE SetApplicationDesc(CONST DPN_APPLICATION_DESC* CONST pad, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE CreateGroup(CONST DPN_GROUP_INFO* CONST pdpnGroupInfo, void* CONST pvGroupContext, void* CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE DestroyGroup(CONST DPNID idGroup, PVOID CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE AddPlayerToGroup(CONST DPNID idGroup, CONST DPNID idClient, PVOID CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE RemovePlayerFromGroup(CONST DPNID idGroup, CONST DPNID idClient, PVOID CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE SetGroupInfo(CONST DPNID dpnid, DPN_GROUP_INFO* CONST pdpnGroupInfo,PVOID CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE GetGroupInfo(CONST DPNID dpnid, DPN_GROUP_INFO* CONST pdpnGroupInfo, DWORD* CONST pdwSize, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE EnumPlayersAndGroups(DPNID* CONST prgdpnid, DWORD* CONST pcdpnid, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE EnumGroupMembers(CONST DPNID dpnid, DPNID* CONST prgdpnid, DWORD* CONST pcdpnid, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE SetPeerInfo(CONST DPN_PLAYER_INFO* CONST pdpnPlayerInfo,PVOID CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE GetPeerInfo(CONST DPNID dpnid, DPN_PLAYER_INFO* CONST pdpnPlayerInfo, DWORD* CONST pdwSize, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE GetPeerAddress(CONST DPNID dpnid, IDirectPlay8Address** CONST pAddress, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE GetLocalHostAddresses(IDirectPlay8Address** CONST prgpAddress, DWORD* CONST pcAddress, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE Close(CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE EnumHosts(PDPN_APPLICATION_DESC CONST pApplicationDesc, IDirectPlay8Address* CONST pAddrHost, IDirectPlay8Address* CONST pDeviceInfo,PVOID CONST pUserEnumData, CONST DWORD dwUserEnumDataSize, CONST DWORD dwEnumCount, CONST DWORD dwRetryInterval, CONST DWORD dwTimeOut,PVOID CONST pvUserContext, DPNHANDLE* CONST pAsyncHandle, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE DestroyPeer(CONST DPNID dpnidClient, CONST void* CONST pvDestroyData, CONST DWORD dwDestroyDataSize, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE ReturnBuffer(CONST DPNHANDLE hBufferHandle, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE GetPlayerContext(CONST DPNID dpnid,PVOID* CONST ppvPlayerContext, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE GetGroupContext(CONST DPNID dpnid,PVOID* CONST ppvGroupContext, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE GetCaps(DPN_CAPS* CONST pdpCaps, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE SetCaps(CONST DPN_CAPS* CONST pdpCaps, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE SetSPCaps(CONST GUID* CONST pguidSP, CONST DPN_SP_CAPS* CONST pdpspCaps, CONST DWORD dwFlags ) override;
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virtual HRESULT STDMETHODCALLTYPE GetSPCaps(CONST GUID* CONST pguidSP, DPN_SP_CAPS* CONST pdpspCaps, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE GetConnectionInfo(CONST DPNID dpnid, DPN_CONNECTION_INFO* CONST pdpConnectionInfo, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE RegisterLobby(CONST DPNHANDLE dpnHandle, struct IDirectPlay8LobbiedApplication* CONST pIDP8LobbiedApplication, CONST DWORD dwFlags) override;
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virtual HRESULT STDMETHODCALLTYPE TerminateSession(void* CONST pvTerminateData, CONST DWORD dwTerminateDataSize, CONST DWORD dwFlags) override;
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};
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#endif /* !DPLITE_DIRECTPLAY8PEER_HPP */
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