linux网络编程之地址结构sockaddr和sockaddr_in的区别

1、介绍sockaddr

结构体struct sockaddr在/usr/include/linux/socket.h中定义

  

   

    

     

    
    

     

      struct sockaddr {
     
    
   

    

     

    
    

     

       unsigned short sa_family; // 2 bytes address family, AF_xxx
     
    
   

    

     

    
    

     

       char sa_data[14]; // 14 bytes of protocol address
     
    
   

    

     

    
    

     

      };
     
    
  
 

2、介绍sockaddr_in

结构体struct sockaddr_in在/usr/include/netinet/in.h中定义，是IPv4的地址结构
 

  

   

    

     

    
    

     

      struct sockaddr_in {
     
    
   

    

     

    
    

     

       short sin_family; // 2 bytes e.g. AF_INET, AF_INET6
     
    
   

    

     

    
    

     

       unsigned short   sin_port; // 2 bytes e.g. htons(3490)
     
    
   

    

     

    
    

     

       struct in_addr   sin_addr; // 4 bytes see struct in_addr, below
     
    
   

    

     

    
    

     

       char sin_zero[8]; // 8 bytes zero this if you want to
     
    
   

    

     

    
    

     

      };
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      struct in_addr {
     
    
   

    

     

    
    

     

       unsigned long s_addr; // 4 bytes load with inet_pton()
     
    
   

    

     

    
    

     

      };
     
    
  
 

3、对比总结

struct sockaddr是通用的套接字地址，而struct sock

文章来源: chenyu.blog.csdn.net，作者：chen.yu，版权归原作者所有，如需转载，请联系作者。

原文链接：chenyu.blog.csdn.net/article/details/56481754