Add connection.remoteAddress for server-side node.tcp.Connections.

src/net.cc

@@ -9,6 +9,7 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netdb.h>
+#include <arpa/inet.h> /* inet_ntop */
 
 using namespace v8;
 using namespace node;
@@ -28,9 +29,10 @@ using namespace node;
 #define ENCODING_SYMBOL       String::NewSymbol("encoding")
 #define TIMEOUT_SYMBOL        String::NewSymbol("timeout")
 #define SERVER_SYMBOL         String::NewSymbol("server")
+#define REMOTE_ADDRESS_SYMBOL String::NewSymbol("remoteAddress")
 
 #define PROTOCOL_SYMBOL           String::NewSymbol("protocol")
-#define CONNECTION_HANDLER_SYMBOL String::NewSymbol("connection_handler")
+#define CONNECTION_HANDLER_SYMBOL String::NewSymbol("connectionHandler")
 
 #define READY_STATE_SYMBOL  String::NewSymbol("readyState")
 #define OPEN_SYMBOL         String::NewSymbol("open")
@@ -522,6 +524,24 @@ Acceptor::OnConnection (struct sockaddr *addr, socklen_t len)
     return NULL;
   }
 
+  char ip4[INET_ADDRSTRLEN];
+  char ip6[INET6_ADDRSTRLEN];
+  Local<String> remote_address;
+  if (addr->sa_family == AF_INET) {
+    struct sockaddr_in *sa = reinterpret_cast<struct sockaddr_in*>(addr);
+    inet_ntop(AF_INET, &(sa->sin_addr), ip4, INET_ADDRSTRLEN);
+    remote_address = String::New(ip4);
+
+  } else if (addr->sa_family == AF_INET6) {
+    struct sockaddr_in6 *sa6 = reinterpret_cast<struct sockaddr_in6*>(addr);
+    inet_ntop(AF_INET6, &(sa6->sin6_addr), ip6, INET6_ADDRSTRLEN);
+    remote_address = String::New(ip6);
+
+  } else {
+    assert(0 && "received a bad sa_family");
+  }
+  connection_handle->Set(REMOTE_ADDRESS_SYMBOL, remote_address);
+
   Connection *connection = NODE_UNWRAP(Connection, connection_handle);
   if (!connection) return NULL;
 

src/net.h

@@ -160,10 +160,7 @@ private:
   static oi_socket* on_connection (oi_server *s, struct sockaddr *addr, socklen_t len) {
     Acceptor *acceptor = static_cast<Acceptor*> (s->data);
     Connection *connection = acceptor->OnConnection (addr, len);
-    if (connection)
-      return &connection->socket_;
-    else
-      return NULL;
+    return &connection->socket_;
   }
 
   oi_server server_;

test/test-pingpong.js

@@ -27,6 +27,7 @@ function Ponger (socket) {
   };
 
   socket.onDisconnect = function (had_error) {
+    assertEquals("127.0.0.1", socket.remoteAddress);
     assertFalse(had_error);
     assertEquals("closed", socket.readyState);
     puts("ponger: onDisconnect");

website/api.html

@@ -428,6 +428,14 @@ server.listen(7000, "localhost");</pre>
       assumed. 
     </dd>
 
+    <dt><code>connection.remoteAddress</code></dt>
+    <dd>
+      The string representation of the remote IP address.  For example, 
+      <code>"74.125.127.100"</code> or <code>"2001:4860:a005::68"</code>.
+      
+      <p>This member is only present in server-side connections.</p>
+    </dd>
+
     <dt><code>connection.readyState</code></dt>
     <dd>
       Either <code>"closed"</code>, <code>"open"</code>,