Add remoteHost to Socket.

Add remoteHost to Socket.

This is merging the native calls into one, GetRemotePeer, thus
eliminating a potentiel extra call to getpeername.

BUG=
TEST=

Committed: https://code.google.com/p/dart/source/detail?r=6353

[Anders Johnsen, 2012-04-10 09:24:26]

New attempt at adding remoteHost to Socket, based on  feedback.

[Søren Gjesse, 2012-04-10 11:32:40]

lgtm

https://chromiumcodereview.appspot.com/10032027/diff/1/runtime/bin/socket.cc
File runtime/bin/socket.cc (right):

https://chromiumcodereview.appspot.com/10032027/diff/1/runtime/bin/socket.cc#...
runtime/bin/socket.cc:163: const char *host = NULL;
How about

char host[INET_ADDRSTRLEN];

here? Then you don't need the allocation/deallocation.

Of cause you need to define a platform independent INET_ADDRSTRLEN here. Could
be named DART_INET_ADDRSTRLEN and you can assert that DART_INET_ADDRSTRLEN >=
INET_ADDRSTRLEN in all platform specific files.

[Anders Johnsen, 2012-04-10 12:09:05]

Like so? :)

[Søren Gjesse, 2012-04-10 12:12:02]

lgtm

Exactly