Added Ruby client example

examples/Ruby/client.rb

@@ -0,0 +1,49 @@
+require 'zlib'
+require 'ffi-rzmq'
+require 'json'
+require 'pry-byebug'
+
+trap "SIGINT" do
+  puts "Quitting"
+  exit 130
+end
+
+EDDN_RELAY   = 'tcp://eddn.edcd.io:9500'
+EDDN_TIMEOUT = 60000
+
+context    = ZMQ::Context.new
+subscriber = context.socket(ZMQ::SUB)
+
+subscriber.setsockopt(ZMQ::SUBSCRIBE, "")
+
+while true do
+  begin
+    subscriber.connect(EDDN_RELAY)
+    puts "Connected to EDDN"
+
+    poller = ZMQ::Poller.new()
+    poller.register(subscriber, ZMQ::POLLIN)
+
+    while true do
+      socks = poller.poll(EDDN_TIMEOUT)
+
+      if socks
+        msg     = ZMQ::Message.new()
+        message = subscriber.recvmsg(msg, ZMQ::DONTWAIT)
+        message = Zlib::Inflate.inflate(msg.copy_out_string)
+        json    = JSON.parse(message)
+        puts json
+      else
+        puts "Disconnected from EDDN (After timeout)"
+        subscriber.disconnect(EDDN_RELAY)
+        break
+      end
+    end
+
+  rescue StandardError => e
+    puts "Disconnect from EDDN (After receiving ZMQError)"
+    puts "ZMQSocketException: #{e}"
+    subscriber.disconnect(EDDN_RELAY)
+    sleep(10)
+  end
+end