add large file test

.travis.yml

@@ -9,7 +9,9 @@ cache:
     - dante-1.4.0
 before_install:
   - sudo apt-get update -qq
-  - sudo apt-get install -qq build-essential libssl-dev swig python-m2crypto python-numpy dnsutils
+  - sudo apt-get install -qq build-essential libssl-dev swig python-m2crypto python-numpy dnsutils iproute nginx
+  - sudo dd if=/dev/urandom of=/usr/share/nginx/www/file bs=1M count=10
+  - sudo service nginx restart
   - pip install m2crypto salsa20 pep8 pyflakes nose coverage
   - sudo tests/socksify/install.sh
   - sudo tests/libsodium/install.sh