Test requesting something from http server on Travis

tox.ini

@@ -23,16 +23,16 @@ whitelist_externals =
     tar
     bash
     sleep
-    cat
+    wget
 commands =
     tar -C {envtmpdir} -vxf {toxinidir}/tests/integration/net.tar
     bash {envtmpdir}/net/start.sh
     bash -c "time python3 {envtmpdir}/net/wait.py {envtmpdir}/net/{auth,relay,exit}*"
-    bash -c "python3 {toxinidir}/scripts/tools/sbws-http-server.py --port 28888 > {toxinidir}/http-server.log &"
+    bash -c "python3 {toxinidir}/scripts/tools/sbws-http-server.py --port 28888 &"
     sleep 30
+    wget -O/dev/null http://127.0.0.1:28888/sbws.bin
     coverage run -a --rcfile={toxinidir}/.coveragerc --source=sbws -m pytest -s {toxinidir}/tests/integration -vv
     bash {envtmpdir}/net/stop.sh
-    cat {toxinidir}/http-server.log
 
 [testenv:lint]
 skip_install = True