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Fix doc - missing dns.resolveNs() and dns.resolveCname()

Fixes #1039.
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commit 56aa2fd4c3d16ac136c90ee894ca835456476bf3 1 parent 9d717f6
@koichik koichik authored ry committed
Showing with 14 additions and 1 deletion.
  1. +14 −1 doc/api/dns.markdown
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15 doc/api/dns.markdown
@@ -41,7 +41,8 @@ necessarily the value initially passed to `lookup`).
Resolves a domain (e.g. `'google.com'`) into an array of the record types
specified by rrtype. Valid rrtypes are `A` (IPV4 addresses), `AAAA` (IPV6
addresses), `MX` (mail exchange records), `TXT` (text records), `SRV` (SRV
-records), and `PTR` (used for reverse IP lookups).
+records), `PTR` (used for reverse IP lookups), `NS` (name server records)
+and `CNAME` (canonical name records).
The callback has arguments `(err, addresses)`. The type of each item
in `addresses` is determined by the record type, and described in the
@@ -89,6 +90,18 @@ Reverse resolves an ip address to an array of domain names.
The callback has arguments `(err, domains)`.
+### dns.resolveNs(domain, callback)
+
+The same as `dns.resolve()`, but only for name server records (`NS` records).
+`addresses` is an array of the name server records available for `domain`
+(e.g., `['ns1.example.com', 'ns2.example.com']`).
+
+### dns.resolveCname(domain, callback)
+
+The same as `dns.resolve()`, but only for canonical name records (`CNAME`
+records). `addresses` is an array of the canonical name records available for
+`domain` (e.g., `['bar.example.com']`).
+
If there an an error, `err` will be non-null and an instanceof the Error
object.
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