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29 lines
945 B
C
29 lines
945 B
C
/* Time getaddrinfo from inside the guest for hosts the clients resolve at startup. */
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#include <netdb.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <time.h>
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int main(int argc, char** argv)
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{
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for (int i = 1; i < argc; ++i) {
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struct addrinfo hints, *result = NULL;
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memset(&hints, 0, sizeof hints);
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hints.ai_family = AF_UNSPEC;
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hints.ai_socktype = SOCK_STREAM;
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struct timespec start, end;
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clock_gettime(CLOCK_MONOTONIC, &start);
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int status = getaddrinfo(argv[i], "443", &hints, &result);
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clock_gettime(CLOCK_MONOTONIC, &end);
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int count = 0;
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for (struct addrinfo* a = result; a; a = a->ai_next) ++count;
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printf("GETADDRINFO host=%s status=%d (%s) addresses=%d seconds=%.2f\n", argv[i], status,
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status ? gai_strerror(status) : "ok", count,
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(end.tv_sec - start.tv_sec) + (end.tv_nsec - start.tv_nsec) / 1e9);
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fflush(stdout);
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if (result) freeaddrinfo(result);
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}
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return 0;
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}
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