fix: reset ping timers on connect

lib/mqtt/client.rb

@@ -266,6 +266,10 @@ def connect(clientid = nil)
         # Receive response
         receive_connack
 
+        # Reset ping stopwatch
+        @last_ping_request = Time.now
+        @last_ping_response = Time.now
+
         # Start packet reading thread
         @read_thread = Thread.new(Thread.current) do |parent|
           Thread.current[:parent] = parent

spec/mqtt_client_spec.rb

@@ -284,6 +284,16 @@
       client.connect('myclient')
     end
 
+    it "should reset @last_ping_request and @last_ping_response" do
+      frozen_time = Time.now
+      expect(Time).to receive(:now).exactly(2).and_return(frozen_time)
+      client.instance_variable_set('@last_ping_request', Time.at(0))
+      client.instance_variable_set('@last_ping_response', Time.at(0))
+      client.connect('myclient')
+      expect(client.instance_variable_get('@last_ping_request')).to eq(frozen_time)
+      expect(client.instance_variable_get('@last_ping_response')).to eq(frozen_time)
+    end
+
     context "protocol version 3.1.0" do
       it "should write a valid CONNECT packet to the socket if not connected" do
         client.version = '3.1.0'