method
gethostbyaddr

v1_9_1_378 -
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Class: Socket
- 1_8_6_287
- 1_8_7_72
- 1_8_7_330
- 1_9_1_378 (0)
- 1_9_2_180 (9)
- 1_9_3_125 (0)
- 1_9_3_392 (0)
- 2_1_10 (0)
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- 2_4_6 (0)
- 2_5_5 (38)
- 2_6_3 (0)
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gethostbyaddr(p1, p2 = v2)
public
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static VALUE sock_s_gethostbyaddr(int argc, VALUE *argv) { VALUE addr, type; struct hostent *h; struct sockaddr *sa; char **pch; VALUE ary, names; int t = AF_INET; rb_scan_args(argc, argv, "11", &addr, &type); sa = (struct sockaddr*)StringValuePtr(addr); if (!NIL_P(type)) { t = NUM2INT(type); } #ifdef INET6 else if (RSTRING_LEN(addr) == 16) { t = AF_INET6; } #endif h = gethostbyaddr(RSTRING_PTR(addr), RSTRING_LEN(addr), t); if (h == NULL) { #ifdef HAVE_HSTRERROR extern int h_errno; rb_raise(rb_eSocket, "%s", (char*)hstrerror(h_errno)); #else rb_raise(rb_eSocket, "host not found"); #endif } ary = rb_ary_new(); rb_ary_push(ary, rb_str_new2(h->h_name)); names = rb_ary_new(); rb_ary_push(ary, names); if (h->h_aliases != NULL) { for (pch = h->h_aliases; *pch; pch++) { rb_ary_push(names, rb_str_new2(*pch)); } } rb_ary_push(ary, INT2NUM(h->h_addrtype)); #ifdef h_addr for (pch = h->h_addr_list; *pch; pch++) { rb_ary_push(ary, rb_str_new(*pch, h->h_length)); } #else rb_ary_push(ary, rb_str_new(h->h_addr, h->h_length)); #endif return ary; }