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Handle UDP packet loss when fragmentation of large packets is broken.

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This commit is contained in:
Simon Kelley
2015-05-08 16:25:38 +01:00
parent 64bcff1c7c
commit a77cec8d58
8 changed files with 66 additions and 35 deletions
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11
src/dnssec.c
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@@ -2162,10 +2162,12 @@ int dnskey_keytag(int alg, int flags, unsigned char *key, int keylen)
}
}
size_t dnssec_generate_query(struct dns_header *header, char *end, char *name, int class, int type, union mysockaddr *addr)
size_t dnssec_generate_query(struct dns_header *header, char *end, char *name, int class,
int type, union mysockaddr *addr, int edns_pktsz)
{
unsigned char *p;
char *types = querystr("dnssec-query", type);
size_t ret;
if (addr->sa.sa_family == AF_INET)
log_query(F_NOEXTRA | F_DNSSEC | F_IPV4, name, (struct all_addr *)&addr->in.sin_addr, types);
@@ -2194,7 +2196,12 @@ size_t dnssec_generate_query(struct dns_header *header, char *end, char *name, i
PUTSHORT(type, p);
PUTSHORT(class, p);
return add_do_bit(header, p - (unsigned char *)header, end);
ret = add_do_bit(header, p - (unsigned char *)header, end);
if (find_pseudoheader(header, ret, NULL, &p, NULL))
PUTSHORT(edns_pktsz, p);
return ret;
}
/* Go through a domain name, find "pointers" and fix them up based on how many bytes