First try running mosquitto inside travis for stable testing.

.travis.yml

@@ -7,8 +7,12 @@ script:
 branches:
   only:
   - master
+services:
+  - docker
 before_install:
   - export CHROME_BIN=chromium-browser
+  - docker pull eclipse-mosquitto
+  - docker run -d -p 9001:9001 -v $(pwd)/mosquitto.conf:/mosquitto/config/mosquitto.conf:ro eclipse-mosquitto
 
 before_script:
   - export DISPLAY=:99.0

mosquitto.conf

@@ -0,0 +1,6 @@
+listener 9001
+protocol websockets
+
+persistence true
+persistence_location /mosquitto/data/
+log_dest file /mosquitto/log/mosquitto.log

tests/mqtt.service.spec.ts

@@ -17,8 +17,8 @@ import {
 
 const config: IMqttServiceOptions = {
   connectOnCreate: true,
-  hostname: 'test.mosquitto.org',
-  port: 8080,
+  hostname: 'localhost',
+  port: 9001,
   path: ''
 };