<span style="font-size:18px;"><span style="font-size:18px;">#include<stdio.h>
#include<stdlib.h>
#include<sys/socket.h>
#include<linux/un.h>
#include<string.h>
#include<unistd.h>
int main()
{
char buf[256];
int fd = socket(AF_UNIX，SOCK_DGRAM，0);
struct sockaddr_un addr = {0};
addr.sun_family = AF_UNIX;
memcpy(addr.sun_path，"my.sock"，strlen("my.sock"));
int r = connect(fd，reinterpret_cast<struct sockaddr*>(&addr)，sizeof(addr));
write(fd，"come from socketB!"，strlen("come from socketB!"));
close(fd);
//unlink("my.sock");
return 0;
}
</span></span>

　　下面一个程序给上面那个程序发送数据
　　以下两段程序绑定的文件时一个网卡，实现不同主机间的进程的相互通信

 

#include<sys/socket.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<unistd.h>
int main()
{
char buf[256];
int fd = socket(AF_INET，SOCK_DGRAM，0);
if(fd == -1 )
{
printf("socket error:%m ");
exit(-1);
}else
{
printf("socket complete:%m ");
}
struct sockaddr_in addr = {0};
addr.sin_family = AF_INET;
addr.sin_port = htons(8888);
addr.sin_addr.s_addr = inet_addr("192.168.64.128");
int r = bind(fd，reinterpret_cast<struct sockaddr*>(&addr)，sizeof(addr));
if(r == -1)
{
printf("bind error%m ");
exit(-1);
}else{
printf("bind complete ");
}
while(1)
{
bzero(buf，sizeof(buf));
r = read(fd，buf，sizeof(buf));
buf[r] = '';
printf("%s "，buf);
}
close(fd);
unlink("my.sock");
return 0;
}