網口轉串口

client.py

from socket import *HOST = '192.168.1.14' # or 'localhost'PORT = 8887BUFSIZ =1024ADDR = (HOST,PORT)tcpCliSock = socket(AF_INET,SOCK_STREAM)tcpCliSock.connect(ADDR)while True:     data1 = input('>')     #data = str(data)     if not data1:         break     tcpCliSock.send(data1.encode())     data1 = tcpCliSock.recv(BUFSIZ)     if not data1:         break     print(data1.decode('utf-8'))tcpCliSock.close()

com.py

#! /usr/bin/env python#coding=utf-8import ptyimport osimport selectdef mkpty():    #    master1, slave = pty.openpty()    slaveName1 = os.ttyname(slave)    master2, slave = pty.openpty()    slaveName2 = os.ttyname(slave)    print '/nslave device names: ', slaveName1, slaveName2    return master1, master2if __name__ == "__main__":    master1, master2 = mkpty()    while True:                rl, wl, el = select.select([master1,master2], [], [], 1)        for master in rl:            data = os.read(master, 128)            if master==master1:                print "master1 receive data: %d data:" % len(data)                print data            else:                print "master2 receive data: %d data:" % len(data)                print data

client.c

#include <sys/types.h>#include <sys/socket.h>#include <stdio.h>#include <netinet/in.h>#include <arpa/inet.h>#include <unistd.h>#include <string.h>#include <stdlib.h>#include <fcntl.h>#include <sys/shm.h> #define MYPORT  8887#define BUFFER_SIZE 1024 int main(){    ///定義sockfd    int sock_cli = socket(AF_INET,SOCK_STREAM, 0);     ///定義sockaddr_in    struct sockaddr_in servaddr;    memset(&servaddr, 0, sizeof(servaddr));    servaddr.sin_family = AF_INET;    servaddr.sin_port = htons(MYPORT);  ///服務器端口    servaddr.sin_addr.s_addr = inet_addr("xxxxxx");  ///服務器ip     ///連接服務器,成功返回0,錯誤返回-1    if (connect(sock_cli, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0)    {        perror("connect");        exit(1);    }     char sendbuf[BUFFER_SIZE];    char recvbuf[BUFFER_SIZE];    while (fgets(sendbuf, sizeof(sendbuf), stdin) != NULL)    {//int len = strlen(sendbuf);//if(sendbuf[len-1] == 'r'){sendbuf[len--]=0;}printf("send:%s",sendbuf);        send(sock_cli, sendbuf, strlen(sendbuf),0); ///發送        recv(sock_cli, recvbuf, strlen(recvbuf),0); ///接收        fputs(recvbuf, stdout);        memset(sendbuf, 0, sizeof(sendbuf));        memset(recvbuf, 0, sizeof(recvbuf));    }     close(sock_cli);    return 0;}

server.c

#include <sys/types.h>#include <sys/socket.h>#include <stdio.h>#include <netinet/in.h>#include <arpa/inet.h>#include <unistd.h>#include <string.h>#include <stdlib.h>#include <fcntl.h>#include <sys/shm.h>#include <asm/termios.h>#define DEV_NAME  "/dev/pts/1"#define MYPORT  8887#define QUEUE   20#define BUFFER_SIZE 1024int mainFunction(){    int fd;//serial port    ///定義sockfd    int server_sockfd = socket(AF_INET,SOCK_STREAM, 0);    ///定義sockaddr_in    struct sockaddr_in server_sockaddr;    server_sockaddr.sin_family = AF_INET;    server_sockaddr.sin_port = htons(MYPORT);    server_sockaddr.sin_addr.s_addr = htonl(INADDR_ANY);    fd = open(DEV_NAME, O_RDWR | O_NOCTTY);if(fd < 0) {perror(DEV_NAME);return -1;}    printf("port is readyn");    cfsetispeed(fd,115200);      cfsetospeed(fd,115200);     //bind,成功返回0,出錯返回-1    while(bind(server_sockfd,(struct sockaddr *)&server_sockaddr,sizeof(server_sockaddr))==-1)    {        ;    }    ///listen,成功返回0,出錯返回-1    if(listen(server_sockfd,QUEUE) == -1)    {        perror("listen errorn");return;    }    ///客戶端套接字    char buffer[BUFFER_SIZE];    struct sockaddr_in client_addr;    socklen_t length = sizeof(client_addr);    ///成功返回非負描述字,出錯返回-1    int conn = accept(server_sockfd, (struct sockaddr*)&client_addr, &length);    if(conn<0)    {        perror("connect errorn");return;    }    while(1)    {        memset(buffer,0,sizeof(buffer));        int len = recv(conn, buffer, sizeof(buffer),0);if(len<=0)        {            printf("maybe disconnected... restart:n");            break;        }//if(buffer[0]=='n')//{//    printf("end by user");//    break;//}len = write(fd, buffer,len);if (len < 0) {printf("write data error n");break;}        send(conn,buffer, len, 0);    }    close(conn);    close(server_sockfd);}void main(){    while(1)    {        mainFunction();    }}