Add port and protocol validation

pool.json

@@ -1 +0,0 @@
-{}

threshold

@@ -187,6 +187,12 @@ class Helper(object):
                         incUsage("connect")
                         return
 
+                    try:
+                        int(spl[3])
+                    except:
+                        failure("Port must be an integer, not %s" % spl[3])
+                        return
+
                     pool[spl[1]] = { "address": spl[2],
                                      "port": spl[3],
                                      "protocol": protocol,
@@ -252,6 +258,16 @@ class Helper(object):
                     if not spl[2] in pool[spl[1]].keys():
                         failure("No such key: %s" % spl[2])
                         return
+                    if spl[2] == "port":
+                        try:
+                            int(spl[3])
+                        except:
+                            failure("Port must be an integer, not %s" % spl[3])
+                            return
+                    if spl[2] == "protocol":
+                        if not spl[3] in ["ssl", "plain"]:
+                            failure("Protocol must be ssl or plain, not %s" % spl[3])
+                            return
                     if spl[3] == pool[spl[1]][spl[2]]:
                         failure("Value already exists: %s" % spl[3])
                         return