xuesongbj
/ How to compare an IPv6 is greater or less than in C
Created
May 15, 2019 01:51
How to compare an IPv6 is greater or less than in C?
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| #include <arpa/inet.h> | |
| #include <stdlib.h> | |
| #include <stdio.h> | |
| #include <string.h> | |
| int main(void) | |
| { | |
| const char *ip6str = "2a03:6300:1:103:211:5bff:fe31:13e1"; | |
| const char *first = "2a03:6300:1:103:218:5bff:fe31:13e1"; | |
| const char *last = "2a03:6300:1:103:220:5bff:fe31:13e1"; |
xuesongbj
/ inet_ntop and inet_pton example
Created
May 15, 2019 09:03
inet_ntop and inet_pton example
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| // IPv6 demo of inet_ntop() and inet_pton() | |
| // (basically the same except with a bunch of 6s thrown around) | |
| struct sockaddr_in6 sa; | |
| char str[INET6_ADDRSTRLEN]; | |
| // store this IP address in sa: | |
| inet_pton(AF_INET6, "2001:db8:8714:3a90::12", &(sa.sin6_addr)); | |
| // now get it back and print it |