Give a proper error when an unsupported protocol is used for connection in Thin mode

Author: sharadraju

lib/thin/sqlnet/ezConnectResolver.js

@@ -39,8 +39,7 @@ Test Case in oracle_private/ezconnectTest.js
 const HOSTNAMES_PATTERN = new RegExp("((?=(?<hostnames>(((\\[[A-z0-9:]+\\])|([A-z0-9][A-z0-9._-]+))[,]?)+)))\\k<hostnames>(:(?<port>\\d+)?)?", 'g');
 
 // The EZConnect pattern without the extended settings part.
-const EZ_URL_PATTERN = new RegExp("^((?<protocol>tcp|tcps):)?"
-    + "(//)?"
+const EZ_URL_PATTERN = new RegExp("^(((?<protocol>[A-z0-9]+):)?//)?"
     + "(?<hostinfo>(" + HOSTNAMES_PATTERN.source + "(?=([,]|[;]|[/]|[:]|$))([,]|[;])?)+)"
     + "(/(?<servicename>[A-z0-9][A-z0-9,-.]+)?)"
     + "?(:(?<servermode>dedicated|shared|pooled))"
@@ -145,6 +144,8 @@ class EZConnectResolver {
     if (protocol == null) {
       if (!(url.includes("//")))
         protocol = 'TCP';
+    } else if (protocol.toLowerCase() != 'tcp' && protocol.toLowerCase() != 'tcps') {
+      errors.throwErr(errors.ERR_INVALID_EZCONNECT_SYNTAX, 'Invalid protocol', protocol);
     }
     // Try to get the proxy information from URL properties
     const proxyHost = this.urlProps.get("HTTPS_PROXY");