diff --git a/Gemfile b/Gemfile
index 22decae60..b348fca0d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -34,6 +34,7 @@ end
 group :test do
   gem "rspec", "~> 3.5.0"
   gem "rabbitmq_http_api_client", "~> 1.9.1", require: "rabbitmq/http/client"
+  gem "toxiproxy", "~> 1.0.3"
 end
 
 gemspec
diff --git a/docker-compose.yml b/docker-compose.yml
index 59041d7e7..f8fb53318 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -17,4 +17,12 @@ services:
       - 5671-5672:5671-5672
       - 15672:15672
     volumes:
-      - ./spec:/spec:ro
\ No newline at end of file
+      - ./spec:/spec:ro
+  toxiproxy:
+    container_name: toxiproxy
+    image: shopify/toxiproxy
+    ports:
+      - 8474:8474
+      - 11111:11111
+    depends_on:
+      - rabbitmq
\ No newline at end of file
diff --git a/lib/bunny/session.rb b/lib/bunny/session.rb
index 95d6a449a..cbc55aaba 100644
--- a/lib/bunny/session.rb
+++ b/lib/bunny/session.rb
@@ -1079,9 +1079,13 @@ def send_frameset(frames, channel)
       # still recommend not sharing channels between threads except for consumer-only cases in the docs. MK.
       channel.synchronize do
         # see rabbitmq/rabbitmq-server#156
-        data = frames.reduce("") { |acc, frame| acc << frame.encode }
-        @transport.write(data)
-        signal_activity!
+        if open?
+          data = frames.reduce("") { |acc, frame| acc << frame.encode }
+          @transport.write(data)
+          signal_activity!
+        else
+          raise ConnectionClosedError.new(frames)
+        end
       end
     end # send_frameset(frames)
 
@@ -1097,8 +1101,12 @@ def send_frameset_without_timeout(frames, channel)
       # If we synchronize on the channel, however, this is both thread safe and pretty fine-grained
       # locking. See a note about "single frame" methods in a comment in `send_frameset`. MK.
       channel.synchronize do
-        frames.each { |frame| self.send_frame_without_timeout(frame, false) }
-        signal_activity!
+        if open?
+          frames.each { |frame| self.send_frame_without_timeout(frame, false) }
+          signal_activity!
+        else
+          raise ConnectionClosedError.new(frames)
+        end
       end
     end # send_frameset_without_timeout(frames)
 
diff --git a/spec/higher_level_api/integration/toxiproxy_spec.rb b/spec/higher_level_api/integration/toxiproxy_spec.rb
new file mode 100644
index 000000000..5f464f3e2
--- /dev/null
+++ b/spec/higher_level_api/integration/toxiproxy_spec.rb
@@ -0,0 +1,37 @@
+require "spec_helper"
+require_relative "../../toxiproxy_helper"
+
+if ::Toxiproxy.running?
+  describe Bunny::Channel, "#basic_publish" do
+    include RabbitMQ::Toxiproxy
+
+    before(:all) do
+      setup_toxiproxy
+      @connection = Bunny.new(:user => "bunny_gem", :password => "bunny_password", :vhost => "bunny_testbed",
+        host: "localhost:11111", heartbeat_timeout: 1)
+      @connection.start
+    end
+
+    after :all do
+      @connection.close if @connection.open?
+    end
+
+    context "when the the connection detects missed heartbeats" do
+      let(:queue_name) { "bunny.basic.publish.queue#{rand}" }
+
+      it "raises a ConnectionClosedError" do
+        ch = @connection.create_channel
+        begin
+          rabbitmq_toxiproxy.down do
+            sleep 2
+            expect { ch.default_exchange.publish("", :routing_key => queue_name) }.to raise_error(Bunny::ConnectionClosedError)
+          end
+        ensure
+          cleanup_toxiproxy
+        end
+      end
+    end
+  end
+else
+  puts "Toxiproxy isn't running, some examples will be skipped"
+end
diff --git a/spec/toxiproxy_helper.rb b/spec/toxiproxy_helper.rb
new file mode 100644
index 000000000..1ba23635a
--- /dev/null
+++ b/spec/toxiproxy_helper.rb
@@ -0,0 +1,20 @@
+module RabbitMQ
+  module Toxiproxy
+    def setup_toxiproxy
+      ::Toxiproxy.populate([{
+        name: "rabbitmq",
+        listen: "0.0.0.0:11111",
+        upstream: "rabbitmq:5672"
+      }])
+      rabbitmq_toxiproxy.enable
+    end
+
+    def cleanup_toxiproxy
+      ::Toxiproxy.populate()
+    end
+
+    def rabbitmq_toxiproxy
+      ::Toxiproxy[/rabbitmq/]
+    end
+  end
+end