mirror of
https://github.com/JGRennison/OpenTTD-patches.git
synced 2024-11-04 06:00:15 +00:00
70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
/* $Id$ */
|
|
|
|
#ifndef NETWORK_CORE_PACKET_H
|
|
#define NETWORK_CORE_PACKET_H
|
|
|
|
#ifdef ENABLE_NETWORK
|
|
|
|
#include "config.h"
|
|
|
|
/**
|
|
* @file packet.h Basic functions to create, fill and read packets.
|
|
*/
|
|
|
|
typedef struct NetworkClientState NetworkClientState;
|
|
|
|
/**
|
|
* Queries the network client state struct to determine whether
|
|
* the client has quit. It indirectly also queries whether the
|
|
* packet is corrupt as the connection will be closed if it is
|
|
* reading beyond the boundary of the received packet.
|
|
* @param cs the state to query
|
|
* @param true if the connection should be considered dropped
|
|
*/
|
|
bool HasClientQuit(const NetworkClientState *cs);
|
|
|
|
typedef uint16 PacketSize; ///< Size of the whole packet.
|
|
typedef uint8 PacketType; ///< Identifier for the packet
|
|
|
|
/**
|
|
* Internal entity of a packet. As everything is sent as a packet,
|
|
* all network communication will need to call the functions that
|
|
* populate the packet.
|
|
* Every packet can be at most SEND_MTU bytes. Overflowing this
|
|
* limit will give an assertion when sending (i.e. writing) the
|
|
* packet. Reading past the size of the packet when receiving
|
|
* will return all 0 values and "" in case of the string.
|
|
*/
|
|
typedef struct Packet {
|
|
/** The next packet. Used for queueing packets before sending. */
|
|
struct Packet *next;
|
|
/** The size of the whole packet for received packets. For packets
|
|
* that will be sent, the value is filled in just before the
|
|
* actual transmission. */
|
|
PacketSize size;
|
|
/** The current read/write position in the packet */
|
|
PacketSize pos;
|
|
/** The buffer of this packet */
|
|
byte buffer[SEND_MTU];
|
|
} Packet;
|
|
|
|
|
|
Packet *NetworkSend_Init(const PacketType type);
|
|
void NetworkSend_FillPacketSize(Packet *packet);
|
|
void NetworkSend_uint8 (Packet *packet, uint8 data);
|
|
void NetworkSend_uint16(Packet *packet, uint16 data);
|
|
void NetworkSend_uint32(Packet *packet, uint32 data);
|
|
void NetworkSend_uint64(Packet *packet, uint64 data);
|
|
void NetworkSend_string(Packet *packet, const char* data);
|
|
|
|
void NetworkRecv_ReadPacketSize(Packet *packet);
|
|
uint8 NetworkRecv_uint8 (NetworkClientState *cs, Packet *packet);
|
|
uint16 NetworkRecv_uint16(NetworkClientState *cs, Packet *packet);
|
|
uint32 NetworkRecv_uint32(NetworkClientState *cs, Packet *packet);
|
|
uint64 NetworkRecv_uint64(NetworkClientState *cs, Packet *packet);
|
|
void NetworkRecv_string(NetworkClientState *cs, Packet *packet, char* buffer, size_t size);
|
|
|
|
#endif /* ENABLE_NETWORK */
|
|
|
|
#endif /* NETWORK_CORE_PACKET_H */
|