dns: rename domain to hostname

A follow-up commit will save the domain name on the request object but
we can't call that property 'domain' because that gets intercepted by
src/node.cc and lib/domain.js to implement the node.js feature of the
same name.

To avoid confusion, rename all variables called 'domain' to 'hostname'.

1 files changed, 9 insertions, 9 deletions

diff --git a/lib/dns.js b/lib/dns.js
index 3e4b90f6e3..9ced633c42 100644
--- a/lib/dns.js
+++ b/lib/dns.js
@@ -94,8 +94,8 @@ function onlookup(err, addresses) {
 
 
 // Easy DNS A/AAAA look up
-// lookup(domain, [family,] callback)
-exports.lookup = function(domain, family, callback) {
+// lookup(hostname, [family,] callback)
+exports.lookup = function(hostname, family, callback) {
   // parse arguments
   if (arguments.length === 2) {
     callback = family;
@@ -110,7 +110,7 @@ exports.lookup = function(domain, family, callback) {
   }
   callback = makeAsync(callback);
 
-  if (!domain) {
+  if (!hostname) {
     callback(null, null, family === 6 ? 6 : 4);
     return {};
   }
@@ -119,14 +119,14 @@ exports.lookup = function(domain, family, callback) {
   // localhost entry from c:\WINDOWS\system32\drivers\etc\hosts
   // See http://daniel.haxx.se/blog/2011/02/21/localhost-hack-on-windows/
   // TODO Remove this once c-ares handles this problem.
-  if (process.platform == 'win32' && domain == 'localhost') {
+  if (process.platform == 'win32' && hostname == 'localhost') {
     callback(null, '127.0.0.1', 4);
     return {};
   }
 
-  var matchedFamily = net.isIP(domain);
+  var matchedFamily = net.isIP(hostname);
   if (matchedFamily) {
-    callback(null, domain, matchedFamily);
+    callback(null, hostname, matchedFamily);
     return {};
   }
 
@@ -135,7 +135,7 @@ exports.lookup = function(domain, family, callback) {
     family: family,
     oncomplete: onlookup
   };
-  var err = cares.getaddrinfo(req, domain, family);
+  var err = cares.getaddrinfo(req, hostname, family);
   if (err) throw errnoException(err, 'getaddrinfo');
 
   callback.immediately = true;
@@ -181,7 +181,7 @@ exports.resolveNaptr = resolveMap.NAPTR = resolver('queryNaptr');
 exports.reverse = resolveMap.PTR = resolver('getHostByAddr');
 
 
-exports.resolve = function(domain, type_, callback_) {
+exports.resolve = function(hostname, type_, callback_) {
   var resolver, callback;
   if (util.isString(type_)) {
     resolver = resolveMap[type_];
@@ -192,7 +192,7 @@ exports.resolve = function(domain, type_, callback_) {
   }
 
   if (util.isFunction(resolver)) {
-    return resolver(domain, callback);
+    return resolver(hostname, callback);
   } else {
     throw new Error('Unknown type "' + type_ + '"');
   }