add test for multiple passwords

.travis.yml

@@ -10,3 +10,4 @@ script:
   - python test.py -c test/table.json
   - python test.py -c test/aes.json
   - python test.py -c test/salsa20.json
+  - python test.py -c test/server-multi-passwd.json

test/server-multi-passwd.json

@@ -0,0 +1,22 @@
+{
+    "server": "127.0.0.1",
+    "server_port": 8384,
+    "local_port": 1080,
+    "password": "foobar4",
+    "port_password": {
+        "8381": "foobar1",
+        "8382": "foobar2",
+        "8383": "foobar3",
+        "8384": "foobar4",
+        "8385": "foobar5",
+        "8386": "foobar6",
+        "8387": "foobar7",
+        "8388": "foobar8",
+        "8389": "foobar9",
+        "8390": "foobar10",
+        "8391": "foobar11",
+        "8392": "foobar12"
+    },
+    "timeout": 60,
+    "method": "aes-256-cfb"
+}