75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
#ifndef TCPCONNECTION_H
|
|
#define TCPCONNECTION_H
|
|
|
|
#include <arpa/inet.h>
|
|
#include <pthread.h>
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <sys/socket.h>
|
|
|
|
#define TCP_IO_BUFFER_SIZE 1500
|
|
#define TCP_FRAME_HEADER_SIZE 4U
|
|
#define TCP_MAX_FRAME_PAYLOAD (1024U * 1024U)
|
|
|
|
typedef enum {
|
|
TCP_CONNECTION_ROLE_INBOUND = 0,
|
|
TCP_CONNECTION_ROLE_OUTBOUND = 1
|
|
} tcp_connection_role_t;
|
|
|
|
typedef struct tcp_connection_t tcp_connection_t;
|
|
|
|
struct tcp_connection_t {
|
|
int sockFd;
|
|
sa_family_t addrFamily;
|
|
struct sockaddr_storage peerAddr;
|
|
uint32_t connectionId;
|
|
tcp_connection_role_t role;
|
|
|
|
pthread_t ioThread;
|
|
pthread_mutex_t sendLock;
|
|
pthread_mutex_t stateLock;
|
|
|
|
bool closing;
|
|
bool disconnectedNotified;
|
|
|
|
unsigned char* dataBuf;
|
|
size_t dataBufLen;
|
|
size_t dataBufCap;
|
|
|
|
unsigned char headerBuf[TCP_FRAME_HEADER_SIZE];
|
|
size_t headerBytesRead;
|
|
uint32_t expectedPayloadLen;
|
|
unsigned char* frameBuf;
|
|
size_t frameBytesRead;
|
|
|
|
void (*on_data)(tcp_connection_t* conn);
|
|
void (*on_disconnect)(tcp_connection_t* conn);
|
|
void* owner;
|
|
};
|
|
|
|
int TcpConnection_Init(tcp_connection_t* conn, int sockFd, const struct sockaddr_storage* peerAddr, tcp_connection_role_t role);
|
|
void TcpConnection_Destroy(tcp_connection_t* conn);
|
|
|
|
int TcpConnection_SetDataBuffer(tcp_connection_t* conn, const unsigned char* data, size_t len);
|
|
|
|
void TcpConnection_ResetFramingState(tcp_connection_t* conn);
|
|
int TcpConnection_FeedFramedData(tcp_connection_t* conn, const unsigned char* input, size_t inputLen);
|
|
|
|
// Returns the peer's canonical IP string (strips ::ffff: IPv4-mapped prefix).
|
|
// Writes at most bufLen bytes to buf. Returns buf on success, NULL on failure.
|
|
const char* TcpConnection_GetPeerAddrStr(const tcp_connection_t* conn, char* buf, size_t bufLen);
|
|
|
|
// Returns non-zero if both connections have the same peer IP address.
|
|
// Handles AF_INET vs AF_INET6 mismatches via IPv4-mapped normalisation.
|
|
int TcpConnection_PeerAddrEqual(const tcp_connection_t* a, const tcp_connection_t* b);
|
|
|
|
int TcpConnection_SendRaw(int sockFd, const void* data, size_t len);
|
|
int TcpConnection_SendFramed(tcp_connection_t* conn, const void* payload, size_t payloadLen);
|
|
|
|
void TcpConnection_RequestClose(tcp_connection_t* conn);
|
|
void TcpConnection_MarkDisconnectNotified(tcp_connection_t* conn);
|
|
bool TcpConnection_IsDisconnectNotified(tcp_connection_t* conn);
|
|
|
|
#endif
|