truct in_addr {
unsigned long s_addr; //that’sa 32-bit long, or 4 bytes
};
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struct sockaddr {
unsigned short sa_family; //address family, AF_xxx
char sa_data[14]; //14 bytes of protocol address
};
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struct sockaddr_in {
short int sin_family; //Address family
unsigned short int sin_port; //Port number
struct in_addr sin_addr; //Internet address
unsigned char sin_zero[8]; //Same size as struct sockaddr
};
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#define h_addr h_addr_list[0] /* The first address in h-addr-list*/
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struct hostent {
char *h_name; /* The official domain name of the host */
char **h_aliases; /* A host alias array ending in NULL */
int h_addrtype; /* The type of address returned, In the Internet environment is AF-INET */
int h_length; /* Byte length of address */
char **h_addr_list; /* An array ending in 0, including this All addresses of the host*/
zh-CN"],null,[0.93521482],zh-CN"]]]
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