remote-proxy.h

smcp报文处理,阅读您的文件包然后写出其具体功能

#ifndef REMOTE_PROXY_H_
#define REMOTE_PROXY_H_

#include<string.h>
#include<stdlib.h>
#include<unistd.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<netdb.h>
#include<arpa/inet.h>
#include<termios.h>
#include<fcntl.h>
#include<assert.h>
#define MAX_MSG_LENGTH         128
typedef struct{
    int fd;
    struct sockaddr_in sin;
    struct sockaddr_in rin;
    int port;
    unsigned char send_buff[MAX_MSG_LENGTH];
    unsigned char recv_buff[MAX_MSG_LENGTH];
}udp_t;
typedef struct{
    int fd;
    struct hostent *he;
    struct sockaddr_in remote_addr;
}tcp_ip_t;

typedef struct{
    char *dev_name;
    int fd;
    int speed;
    int databits;
    int stopbits;
    int parity;
}serial_port_t;

extern int create_udp(udp_t *udp, int port);
extern void udp_set_receiver_addr(udp_t *udp,char *addr,int port);
extern int udp_send(udp_t *udp,char *message,int length);
extern int udp_recv(udp_t *udp, char *message);
extern char *udp_get_sender_addr(udp_t *udp);
extern int udp_close(udp_t *udp);
extern int create_tcp_ip(tcp_ip_t *tcp_ip, char *remote_ip,int remote_port);
extern int tcp_ip_send(tcp_ip_t *tcp_ip, char *message);
extern int tcp_ip_recv(tcp_ip_t *tcp_ip, char *message);

extern int create_serial_port(serial_port_t *hcom, char *dev,int speed,
         int databits, int stopbits, int parity);
extern char *get_serial_port_info(serial_port_t * hcom);
extern int serial_port_send(int fd,char *message);
extern int serial_port_recv(int fd,char *message);
int set_serial_port_speed(serial_port_t *hcom);
int set_serial_port_parity(serial_port_t *hcom);
#endif