Last change
on this file since 413 was 398, checked in by coas-nagasima, 5 years ago |
mbedTLS版Azure IoT Hub接続サンプルのソースコードを追加
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File size:
479 bytes
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1 | #define _GNU_SOURCE
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2 |
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3 | #include <sys/socket.h>
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4 | #include <netdb.h>
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5 | #include <errno.h>
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6 | #include <stdlib.h>
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7 |
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8 | struct hostent *gethostbyname2(const char *name, int af)
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9 | {
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10 | static struct hostent *h;
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11 | size_t size = 63;
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12 | struct hostent *res;
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13 | int err;
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14 | do {
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15 | free(h);
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16 | h = malloc(size+=size+1);
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17 | if (!h) {
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18 | h_errno = NO_RECOVERY;
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19 | return 0;
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20 | }
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21 | err = gethostbyname2_r(name, af, h,
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22 | (void *)(h+1), size-sizeof *h, &res, &h_errno);
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23 | } while (err == ERANGE);
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24 | return err ? 0 : h;
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25 | }
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