用管道或套接字实现客户端服务器模型

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图示模型:

         

主要步骤:

1.客户端获取文件路径,发送到服务器。
2.服务器接收到文件路径,并且读取到文件内容,在发送回客户端。
3.客户端接收文件内容,并显示到控制台。


代码:

使用两个FIFO实现客户服务器模型:

client:

#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <sys/socket.h>#include <fcntl.h>int main(int argc,char* argv[]){mkfifo("/tmp/cs",0644);mkfifo("/tmp/cs1",0644);int fifofd = open("/tmp/cs",O_WRONLY);char buf[BUFSIZ];write(fifofd,argv[1],strlen(argv[1])+1);printf("%d write file:%s\n",getpid(),argv[1]);//sleep(1);int fifofd1 = open("/tmp/cs1",O_RDONLY);read(fifofd1,buf,BUFSIZ);printf("%d client read:\n%s",getpid(),buf);}

server:

#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <sys/socket.h>#include <fcntl.h>int main(int argc,char* argv[]){mkfifo("/tmp/cs",0644);int fifofd = open("/tmp/cs",O_RDONLY);char buf[BUFSIZ];read(fifofd,buf,BUFSIZ);printf("%d file path:%s\n",getpid(),buf);int fd = open(buf,O_RDONLY);bzero(buf,BUFSIZ);read(fd,buf,BUFSIZ);mkfifo("/tmp/cs1",0644);int fifofd1= open("/tmp/cs1",O_WRONLY);write(fifofd1,buf,BUFSIZ);close(fifofd);close(fifofd1);}






使用单个命名管道实现客户服务器模型:

#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <sys/socket.h>#include <fcntl.h>int main(int argc,char* argv[]){mkfifo("/tmp/cs",0644);int fifofd = open("/tmp/cs",O_RDWR);char buf[BUFSIZ];if(fork()){// parentwrite(fifofd,argv[1],strlen(argv[1])+1);printf("write file:%s\n",argv[1]);sleep(1);read(fifofd,buf,BUFSIZ);printf("client read:\n%s",buf);}else{// childread(fifofd,buf,BUFSIZ);printf("file path:%s\n",buf);int fd = open(buf,O_RDONLY);bzero(buf,BUFSIZ);read(fd,buf,BUFSIZ);write(fifofd,buf,BUFSIZ);}close(fifofd);unlink("/tmp/cs");}


使用套接字实现客户服务器模型:

#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <sys/socket.h>#include <fcntl.h>int main(int argc,char* argv[]){int sv[2];char buf[BUFSIZ];socketpair(AF_LOCAL,SOCK_STREAM,0,sv);if(fork()){// parentclose(sv[0]);write(sv[1],argv[1],strlen(argv[1])+1);read(sv[1],buf,BUFSIZ);printf("client read:\n%s",buf);}else{// childclose(sv[1]);read(sv[0],buf,BUFSIZ);printf("file path:%s\n",buf);int fd = open(buf,O_RDONLY);bzero(buf,BUFSIZ);read(fd,buf,BUFSIZ);write(sv[0],buf,BUFSIZ);}}


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