NVIDIA Jetson TX1 系列开发教程之十一：TCP/IP文件传输

NVIDIA Jetson TX1 系列开发教程之十一：TCP/IP文件传输

---

• 转载请注明作者和出处：http://blog.csdn.net/u011475210
• 嵌入式平台：NVIDIA Jetson TX1
• 嵌入式系统：Ubuntu16.04
• 虚拟机系统：Ubuntu14.04
• 编者: WordZzzz

---

写在前面：
本篇博文设计的内容是TCP/IP文件传输，只是简单的实现文档、图片等二进制文件的传输，并将大包进行分包发送，不涉及select等机制。

一、服务端程序：

/* * common.h * *  Created on: Aug 11, 2017 *      Author: wordzzzz */#ifndef COMMON_H_#define COMMON_H_#include <stdio.h>#include <stdlib.h>#include <unistd.h>#include <string.h>#include <sys/types.h>#include <sys/stat.h>#include <sys/socket.h>#include <netinet/in.h>#define PORT 6000#define LISTENQ 20#define BUFFSIZE 4096#define FILE_NAME_MAX_SIZE 512#endif /* COMMON_H_ */

/* * fileserver.c * *  Created on: Aug 11, 2017 *      Author: wordzzzz */#include "common.h"int main(int argc, char **argv[]){    //Create socket    int sockfd,connfd;    struct sockaddr_in svraddr,clientaddr;    bzero(&svraddr,sizeof(svraddr));    bzero(&clientaddr,sizeof(clientaddr));    svraddr.sin_family=AF_INET;    svraddr.sin_addr.s_addr=htonl(INADDR_ANY);    svraddr.sin_port=htons(PORT);    sockfd=socket(AF_INET,SOCK_STREAM,0);    if(sockfd<0)    {        perror("socket");        exit(1);    }    //bind    if(bind(sockfd,(struct sockaddr*)&svraddr,sizeof(svraddr))<0)    {        perror("bind");        exit(1);    }    //listen    if(listen(sockfd,LISTENQ)<0)    {        perror("listen");        exit(1);    }    while(1)    {        socklen_t clientaddrlen=sizeof(clientaddr);        //accept        connfd=accept(sockfd,(struct sockaddr*)&clientaddr,&clientaddrlen);        if(connfd<0)        {            perror("connect");            exit(1);        }        //recv file imformation        char buff[BUFFSIZE];        char filename[FILE_NAME_MAX_SIZE];        int count;        bzero(buff,BUFFSIZE);        count=recv(connfd,buff,BUFFSIZE,0);        if(count<0)        {            perror("recv");            exit(1);        }        strncpy(filename,buff,strlen(buff)>FILE_NAME_MAX_SIZE?FILE_NAME_MAX_SIZE:strlen(buff));        printf("Preparing recv file : %s\n",filename);        //recv file        FILE *fd=fopen(filename,"wb+");        if(NULL==fd)        {            perror("open");            exit(1);        }        bzero(buff,BUFFSIZE);        int length=0;        while(length=recv(connfd,buff,BUFFSIZE,0))        {            if(length<0)            {                perror("recv");                exit(1);            }            int writelen=fwrite(buff,sizeof(char),length,fd);            if(writelen<length)            {                perror("write");                exit(1);            }            bzero(buff,BUFFSIZE);        }        printf("Receieved file:%s finished!\n",filename);        fclose(fd);        close(connfd);    }    close(sockfd);    return 0;}

二、客户端程序：

/* * fileclient.c * *  Created on: Aug 11, 2017 *      Author: wordzzzz */#include "common.h"int main(int argc, char **argv[]){    int clientfd;    if(argc!=3)    {        fprintf(stderr,"Usage:./fileclient <IP_Address> <filename>\n");        exit(1);    }    //Input the file name    char filename[FILE_NAME_MAX_SIZE];    bzero(filename,FILE_NAME_MAX_SIZE);    strcpy(filename, argv[2]);    struct sockaddr_in clientaddr;    bzero(&clientaddr,sizeof(clientaddr));    clientaddr.sin_family=AF_INET;    clientaddr.sin_addr.s_addr=htons(INADDR_ANY);    clientaddr.sin_port=htons(0);    clientfd=socket(AF_INET,SOCK_STREAM,0);    if(clientfd<0)    {        perror("socket");        exit(1);    }    //bind    if(bind(clientfd,(struct sockaddr*)&clientaddr,sizeof(clientaddr))<0)    {        perror("bind");        exit(1);    }    struct sockaddr_in svraddr;    bzero(&svraddr,sizeof(svraddr));    if(inet_aton(argv[1],&svraddr.sin_addr)==0)    {        perror("inet_aton");        exit(1);    }    svraddr.sin_family=AF_INET;    svraddr.sin_port=htons(PORT);    socklen_t svraddrlen=sizeof(svraddr);    if(connect(clientfd,(struct sockaddr*)&svraddr,svraddrlen)<0)    {        perror("connect");        exit(1);    }    //send file imformation    char buff[BUFFSIZE];    int count;    bzero(buff,BUFFSIZE);    strncpy(buff,filename,strlen(filename)>FILE_NAME_MAX_SIZE?FILE_NAME_MAX_SIZE:strlen(filename));    count=send(clientfd,buff,BUFFSIZE,0);    if(count<0)    {        perror("Send file information");        exit(1);    }    //read file    FILE *fd=fopen(filename,"rb");    if(fd==NULL)    {        printf("File :%s not found!\n",filename);    }    else    {        bzero(buff,BUFFSIZE);        int file_block_length=0;        while((file_block_length=fread(buff,sizeof(char),BUFFSIZE,fd))>0)        {            printf("file_block_length:%d\n",file_block_length);            if(send(clientfd,buff,file_block_length,0)<0)            {                perror("Send");                exit(1);            }            bzero(buff,BUFFSIZE);        }        fclose(fd);        printf("Transfer file finished !\n");    }    close(clientfd);    return 0;}

系列教程持续发布中，欢迎订阅、关注、收藏、评论、点赞哦～～(￣▽￣～)～

完的汪(∪｡∪)｡｡｡zzz