Prefer IPv4 by default. Use the option `{prefer_ipv6, true}` to force ibrowse to use ipv6 where available.

CHANGELOG

@@ -1,6 +1,9 @@
 CONTRIBUTIONS & CHANGE HISTORY
 ==============================
 
+21-09-2018  - v4.4.2
+             * Fix for #163 - default to using IPv4
+
 23-08-2018  - v4.4.1
              * Fixes to TLS socket handling (PR#163)
              * Fix ipv6 address family handling (PR#155)

README.md

@@ -7,7 +7,7 @@ ibrowse is a HTTP client written in erlang.
 
 **Comments to:** chandrashekhar.mullaparthi@gmail.com
 
-**Current Version:** 4.4
+**Current Version:** 4.4.2
 
 **Latest Version:** git://github.com/cmullaparthi/ibrowse.git
 

src/ibrowse.app.src

@@ -1,6 +1,6 @@
 {application, ibrowse,
         [{description, "Erlang HTTP client application"},
-         {vsn, "4.4.1"},
+         {vsn, "4.4.2"},
          {registered, [ibrowse_sup, ibrowse]},
          {applications, [kernel,stdlib]},
 	 {env, []},

src/ibrowse_http_client.erl

@@ -605,12 +605,18 @@ do_connect(Host, Port, Options, _State, Timeout) ->
 
 get_sock_options(Host, Options, SSLOptions) ->
     Caller_socket_options = get_value(socket_options, Options, []),
-    Ipv6Options = case is_ipv6_host(Host) of
-        true ->
-            [inet6];
-        false ->
-            []
-    end,
+    PreferIPv6 = get_value(prefer_ipv6, Options, false),
+    Ipv6Options = case PreferIPv6 of
+                      true ->
+                          case is_ipv6_host(Host) of
+                              true ->
+                                  [inet6];
+                              false ->
+                                  []
+                          end;
+                      false ->
+                          []
+                  end,
     Other_sock_options = filter_sock_options(SSLOptions ++ Caller_socket_options ++ Ipv6Options),
     case lists:keysearch(nodelay, 1, Other_sock_options) of
         false ->