Merge pull request #592 from BallAerospace/open_udp_read_first

closes #590 Open Udp read socket first

Author: ryanmelt

lib/cosmos/interfaces/udp_interface.rb

@@ -75,18 +75,18 @@ def initialize(
     # the constructor and a new {UdpReadSocket} if the read_port was given in
     # the constructor.
     def connect
+      @read_socket = UdpReadSocket.new(
+        @read_port,
+        @hostname,
+        @interface_address,
+        @bind_address) if @read_port
       @write_socket = UdpWriteSocket.new(
         @hostname,
         @write_dest_port,
         @write_src_port,
         @interface_address,
         @ttl,
         @bind_address) if @write_dest_port
-      @read_socket = UdpReadSocket.new(
-        @read_port,
-        @hostname,
-        @interface_address,
-        @bind_address) if @read_port
       @thread_sleeper = nil
     end