Allow binaries to be used in bind & connect

Author: yrashk

include/erlzmq.hrl

@@ -62,7 +62,7 @@
 %% <i>For more information see
 %% <a href="http://api.zeromq.org/master:zmq_bind">zmq_bind</a> or
 %% <a href="http://api.zeromq.org/master:zmq_connect">zmq_connect</a></i>
--type erlzmq_endpoint() :: string().
+-type erlzmq_endpoint() :: string() | binary().
 
 %% Standard error atoms.
 -type errno() :: eperm | enoent | srch | eintr | eio | enxio | ebad |

src/erlzmq.erl

@@ -138,7 +138,10 @@ socket(Context, Type, {active, false}) ->
     erlzmq_error().
 bind({I, Socket}, Endpoint)
     when is_integer(I), is_list(Endpoint) ->
-    erlzmq_nif:bind(Socket, Endpoint).
+    erlzmq_nif:bind(Socket, Endpoint);
+bind({I, Socket}, Endpoint)
+    when is_integer(I), is_binary(Endpoint) ->
+    bind({I, Socket}, binary_to_list(Endpoint)).
 
 %% @doc Connect a socket.
 %% <br />
@@ -151,7 +154,10 @@ bind({I, Socket}, Endpoint)
     erlzmq_error().
 connect({I, Socket}, Endpoint)
     when is_integer(I), is_list(Endpoint) ->
-    erlzmq_nif:connect(Socket, Endpoint).
+    erlzmq_nif:connect(Socket, Endpoint);
+connect({I, Socket}, Endpoint)
+    when is_integer(I), is_binary(Endpoint) ->
+    connect({I, Socket}, binary_to_list(Endpoint)).
 
 %% @equiv send(Socket, Msg, [])
 -spec send(erlzmq_socket(),