23 lines
550 B
C
23 lines
550 B
C
#include <netdb.h>
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#include <assert.h>
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#include <arpa/inet.h>
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#include <stddef.h>
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#include <string.h>
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int main() {
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struct sockaddr_in addr;
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addr.sin_family = AF_INET;
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assert(inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr));
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char host[64];
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assert(!getnameinfo((struct sockaddr*)&addr, sizeof(addr), host,
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sizeof(host), NULL, 0, 0));
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assert(inet_pton(AF_INET, "8.8.8.8", &addr.sin_addr));
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assert(!getnameinfo((struct sockaddr*)&addr, sizeof(addr), host,
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sizeof(host), NULL, 0, 0));
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assert(!strcmp(host, "dns.google"));
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return 0;
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}
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