\u8fd9\u4e2a\u4e0eAF_INET\u4e0d\u540c\u5730\u65b9\u5728\u4e8e\uff0c\u5ba2\u6237\u7aef\u4e5f\u8981\u7528bind\u7ed1\u5b9a\u4e00\u4e0b\uff0c\u4e0d\u8981\u9760connect\u5206\u914d\uff0c\u4e0d\u7136\u670d\u52a1\u5668\u662f\u65e0\u6cd5\u77e5\u9053\u5ba2\u6237\u7528\u7684\u662f\u54ea\u4e2a\u5957\u63a5\u5b57\u6587\u4ef6<\/p>\n
\u670d\u52a1\u5668\u7aef<\/p>\n
[ssj@main test]$ cat AFunixserver.c
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <sys\/socket.h>
#include <sys\/un.h>
#include <string.h>
#include <time.h>
#include <sys\/stat.h><\/p>\n#define PATH "\/home\/ssj\/source\/test\/connect.socket"
#define STALE 30
#define MAX 1024<\/p>\nvoid my_turn(char *p)
{
if (p == NULL)return;
while( *p != '\u0000')
{
if( *p >= (char)0x61 && *p <= (char)0x7a)
*p=(char)((int)*p-(int)0x20);
p++;
}
}<\/p>\nint init(int *lfd,char *path)
{
int fd,len;
struct sockaddr_un un;<\/p>\nif((fd=socket(AF_UNIX,SOCK_STREAM,0))==-1)
{perror("Fail to socket");return -1;}<\/p>\nunlink(path);
memset(&un,0,sizeof(un));
un.sun_family=AF_UNIX;
strcpy(un.sun_path,path);<\/p>\nlen=offsetof(struct sockaddr_un,sun_path)+strlen(path);
if(bind(fd,(struct sockaddr *)&un,len)==-1)
{perror("Fail to bind");goto err;}<\/p>\nif(listen(fd,10)==-1){perror("Fail to listen");goto err;}<\/p>\n
*lfd=fd;
return 0;<\/p>\nerr:
close(fd);return -1;
}<\/p>\nint main(void)
{
int lfd,cfd,len,n;
time_t staletime;
struct sockaddr_un un;
struct stat statbuf;
char buf[MAX];<\/p>\nif(init(&lfd,PATH)==-1)
exit(1);
printf("running……n");<\/p>\nwhile(1)
{
len=sizeof(struct sockaddr_un);
if((cfd=accept(lfd,(struct sockaddr *)&un,&len))==-1)
{perror("Fail to accept");exit(1);}<\/p>\nlen-=offsetof(struct sockaddr_un,sun_path);
un.sun_path[len]='\u0000';<\/p>\nif(stat(un.sun_path,&statbuf)==-1){perror("Fail to get status");exit(1);}
if((statbuf.st_mode&(S_IRWXG|S_IRWXO))||(statbuf.st_mode&S_IRWXU)!=S_IRWXU)
{printf("wrong permissionsn");exit(1);}<\/p>\nstaletime=time(NULL)-STALE;
if(statbuf.st_atime<staletime||statbuf.st_ctime<staletime||statbuf.st_mtime<staletime){printf("client is too oldn");close(cfd);break;}<\/p>\nif(unlink(un.sun_path)==-1){perror("Fail to unlink");exit(1);}<\/p>\n
n=read(cfd,buf,MAX);
if (n==-1)
{
perror("Fail to read");
exit(1);
}
else if(n==0)
{
printf("the connect closedn");
close(cfd);
continue;
}<\/p>\nif(strcmp(buf,"Nothing")==0)
goto close;<\/p>\nmy_turn(buf);
if(write(cfd,buf,n)==-1){perror("Fail to write");exit(1);}
close(cfd);<\/p>\n}<\/p>\n
if(unlink(PATH)==-1){perror("Fail to unlink");exit(1);}<\/p>\n
close(lfd);
return 0;<\/p>\nclose:
write(cfd,"Server Close",13);
close(cfd);
close(lfd);
if(unlink(PATH)==-1){perror("Fail to unlink");exit(1);}
return -1;
}<\/p><\/blockquote>\n\u5ba2\u6237\u7aef<\/p>\n
[ssj@main test]$ cat AFunixclient.c
#include <stdio.h>
#include <stddef.h>
#include <sys\/stat.h>
#include <sys\/socket.h>
#include <sys\/un.h>
#include <stdlib.h><\/p>\n#define PATH "\/home\/ssj\/source\/test\/connect.socket"
#define C_PATH "\/home\/ssj\/source\/test\/"
#define MAX 1024<\/p>\nint main(int argc,char *argv[])
{
int cfd,len;
struct sockaddr_un un;
char buf[MAX],*str="Nothing";
if(argc>1)
str=argv[1];<\/p>\nif((cfd=socket(AF_UNIX,SOCK_STREAM,0))==-1)
{perror("Fail to socket");exit(1);}<\/p>\nmemset(&un,0,sizeof(struct sockaddr_un));
un.sun_family=AF_UNIX;
sprintf(un.sun_path,"%s%d",C_PATH,getpid());
len=offsetof(struct sockaddr_un,sun_path)+strlen(un.sun_path);<\/p>\nunlink(un.sun_path);<\/p>\n
if(bind(cfd,(struct sockaddr *)&un,len)==-1)
{perror("Fail to bind");exit(1);}<\/p>\nif(chmod(un.sun_path,S_IRWXU)<0){perror("Fail to chmod");exit(1);}<\/p>\n
memset(&un,0,sizeof(struct sockaddr_un));
un.sun_family=AF_UNIX;
strcpy(un.sun_path,PATH);<\/p>\nlen=offsetof(struct sockaddr_un,sun_path)+strlen(un.sun_path);<\/p>\n
if(connect(cfd,(struct sockaddr *)&un,len)<0)
{perror("Fail to connect");exit(1);}<\/p>\nif(write(cfd,str,len)==-1){perror("Fail to write");exit(1);}<\/p>\n
if(read(cfd,buf,MAX)==-1){perror("Fail to read");exit(1);}<\/p>\n
printf("recive from server:%sn",buf);
close(cfd);
return 0;
}<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"\u8fd9\u4e2a\u4e0eAF_INET\u4e0d\u540c\u5730\u65b9\u5728\u4e8e\uff0c\u5ba2\u6237\u7aef\u4e5f\u8981\u7528bind\u7ed1\u5b9a\u4e00\u4e0b\uff0c\u4e0d\u8981\u9760connect\u5206\u914d\uff0c\u4e0d\u7136\u670d\u52a1\u5668\u662f\u65e0\u6cd5\u77e5\u9053 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-148","post","type-post","status-publish","format-standard","hentry","category-linux-c"],"_links":{"self":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts\/148","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=148"}],"version-history":[{"count":0,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts\/148\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}