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mirror of https://github.com/solemnwarning/directplay-lite synced 2024-12-30 16:45:37 +01:00
directplay-lite/src/DirectPlay8Peer.hpp
Daniel Collins c63945facd Initial prototype of network I/O and session enumeration.
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.
2018-09-11 22:09:27 +01:00

176 lines
9.5 KiB
C++

#ifndef DPLITE_DIRECTPLAY8PEER_HPP
#define DPLITE_DIRECTPLAY8PEER_HPP
#include <winsock2.h>
#include <atomic>
#include <dplay8.h>
#include <map>
#include <mutex>
#include <objbase.h>
#include <stdint.h>
#include <windows.h>
#include "AsyncHandleAllocator.hpp"
#include "HostEnumerator.hpp"
#include "network.hpp"
#include "packet.hpp"
#include "SendQueue.hpp"
class DirectPlay8Peer: public IDirectPlay8Peer
{
private:
std::atomic<unsigned int> * const global_refcount;
ULONG local_refcount;
PFNDPNMESSAGEHANDLER message_handler;
PVOID message_handler_ctx;
enum {
STATE_NEW,
STATE_INITIALISED,
STATE_HOSTING,
STATE_CONNECTED,
} state;
AsyncHandleAllocator handle_alloc;
std::map<DPNHANDLE, HostEnumerator> host_enums;
GUID instance_guid;
GUID application_guid;
DWORD max_players;
std::wstring session_name;
std::wstring password;
std::vector<unsigned char> application_data;
int udp_socket; /* UDP socket, used for general send/recv operations. */
int listener_socket; /* TCP listener socket. */
int discovery_socket; /* Discovery UDP sockets, RECIEVES broadcasts only. */
unsigned char recv_buf[MAX_PACKET_SIZE];
SendQueue udp_sq;
SendQueue discovery_sq;
HANDLE io_event;
std::thread io_thread;
std::atomic<bool> io_run;
struct Player
{
enum PlayerState {
/* Peer has connected to us, we're waiting for the initial message from it. */
PS_INIT,
/* We are the host and the peer has sent the initial connect request, we are waiting
* for the application to process DPN_MSGID_INDICATE_CONNECT before we either add the
* player to the session or reject it.
*/
PS_CONNECTING,
/* This is a fully-fledged peer. */
PS_CONNECTED,
/* This peer is closing down. Discard any future messages received from it, but flush
* anything waiting to be sent and keep the player DPNID valid until after the
* application has processed the DPN_MSGID_DESTROY_PLAYER message and any outstanding
* operations have completed or been cancelled.
*/
PS_CLOSING,
};
enum PlayerState state;
/* This is the TCP socket to the peer, we may have connected to it, or it
* may have connected to us depending who joined the session first, that
* doesn't really matter.
*/
int sock;
uint32_t ip; /* IPv4 address, network byte order. */
uint16_t port; /* TCP and UDP port, host byte order. */
DPNID id; /* Player ID, not initialised before state PS_CONNECTED. */
unsigned char recv_buf[MAX_PACKET_SIZE];
size_t recv_buf_cur;
SendQueue sq;
SendQueue::Buffer *sqb;
const unsigned char *send_buf;
size_t send_remain;
Player(int sock, uint32_t ip, uint16_t port):
state(PS_INIT), sock(sock), ip(ip), port(port), recv_buf_cur(0), send_buf(NULL) {}
};
std::list<Player> peers;
std::map<DPNID, std::list<Player>::iterator> other_player_ids;
/* Serialises access to:
*
* host_enums
* pending_peers
* peers
*/
std::mutex lock;
void io_main();
void io_udp_recv(int sock);
void io_udp_send(int sock, SendQueue &q);
void io_listener_accept(int sock);
bool io_tcp_recv(Player *player);
bool io_tcp_send(Player *player);
void handle_host_enum_request(const PacketDeserialiser &pd, const struct sockaddr_in *from_addr);
public:
DirectPlay8Peer(std::atomic<unsigned int> *global_refcount);
virtual ~DirectPlay8Peer();
/* IUnknown */
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObject) override;
virtual ULONG STDMETHODCALLTYPE AddRef(void) override;
virtual ULONG STDMETHODCALLTYPE Release(void) override;
/* IDirectPlay8Peer */
virtual HRESULT STDMETHODCALLTYPE Initialize(PVOID CONST pvUserContext, CONST PFNDPNMESSAGEHANDLER pfn, CONST DWORD dwFlags) override;
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;
virtual HRESULT STDMETHODCALLTYPE CancelAsyncOperation(CONST DPNHANDLE hAsyncHandle, CONST DWORD dwFlags) override;
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;
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;
virtual HRESULT STDMETHODCALLTYPE GetSendQueueInfo(CONST DPNID dpnid, DWORD* CONST pdwNumMsgs, DWORD* CONST pdwNumBytes, CONST DWORD dwFlags) override;
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;
virtual HRESULT STDMETHODCALLTYPE GetApplicationDesc(DPN_APPLICATION_DESC* CONST pAppDescBuffer, DWORD* CONST pcbDataSize, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE SetApplicationDesc(CONST DPN_APPLICATION_DESC* CONST pad, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE CreateGroup(CONST DPN_GROUP_INFO* CONST pdpnGroupInfo, void* CONST pvGroupContext, void* CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE DestroyGroup(CONST DPNID idGroup, PVOID CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE AddPlayerToGroup(CONST DPNID idGroup, CONST DPNID idClient, PVOID CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE RemovePlayerFromGroup(CONST DPNID idGroup, CONST DPNID idClient, PVOID CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE SetGroupInfo(CONST DPNID dpnid, DPN_GROUP_INFO* CONST pdpnGroupInfo,PVOID CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE GetGroupInfo(CONST DPNID dpnid, DPN_GROUP_INFO* CONST pdpnGroupInfo, DWORD* CONST pdwSize, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE EnumPlayersAndGroups(DPNID* CONST prgdpnid, DWORD* CONST pcdpnid, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE EnumGroupMembers(CONST DPNID dpnid, DPNID* CONST prgdpnid, DWORD* CONST pcdpnid, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE SetPeerInfo(CONST DPN_PLAYER_INFO* CONST pdpnPlayerInfo,PVOID CONST pvAsyncContext, DPNHANDLE* CONST phAsyncHandle, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE GetPeerInfo(CONST DPNID dpnid, DPN_PLAYER_INFO* CONST pdpnPlayerInfo, DWORD* CONST pdwSize, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE GetPeerAddress(CONST DPNID dpnid, IDirectPlay8Address** CONST pAddress, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE GetLocalHostAddresses(IDirectPlay8Address** CONST prgpAddress, DWORD* CONST pcAddress, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE Close(CONST DWORD dwFlags) override;
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;
virtual HRESULT STDMETHODCALLTYPE DestroyPeer(CONST DPNID dpnidClient, CONST void* CONST pvDestroyData, CONST DWORD dwDestroyDataSize, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE ReturnBuffer(CONST DPNHANDLE hBufferHandle, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE GetPlayerContext(CONST DPNID dpnid,PVOID* CONST ppvPlayerContext, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE GetGroupContext(CONST DPNID dpnid,PVOID* CONST ppvGroupContext, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE GetCaps(DPN_CAPS* CONST pdpCaps, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE SetCaps(CONST DPN_CAPS* CONST pdpCaps, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE SetSPCaps(CONST GUID* CONST pguidSP, CONST DPN_SP_CAPS* CONST pdpspCaps, CONST DWORD dwFlags ) override;
virtual HRESULT STDMETHODCALLTYPE GetSPCaps(CONST GUID* CONST pguidSP, DPN_SP_CAPS* CONST pdpspCaps, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE GetConnectionInfo(CONST DPNID dpnid, DPN_CONNECTION_INFO* CONST pdpConnectionInfo, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE RegisterLobby(CONST DPNHANDLE dpnHandle, struct IDirectPlay8LobbiedApplication* CONST pIDP8LobbiedApplication, CONST DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE TerminateSession(void* CONST pvTerminateData, CONST DWORD dwTerminateDataSize, CONST DWORD dwFlags) override;
};
#endif /* !DPLITE_DIRECTPLAY8PEER_HPP */