net: validate non-string host for socket.connect

Signed-off-by: Daeyeon Jeong <[email protected]> PR-URL: #57198 Reviewed-By: James M Snell <[email protected]>

Author: daeyeon

lib/net.js

@@ -1311,6 +1311,8 @@ function lookupAndConnect(self, options){
 consthost=options.host||'localhost';
 let{ port, autoSelectFamilyAttemptTimeout, autoSelectFamily }=options;
 
+validateString(host,'options.host');
+
 if(localAddress&&!isIP(localAddress)){
 thrownewERR_INVALID_IP_ADDRESS(localAddress);
 }

test/parallel/test-net-connect-options-invalid.js

@@ -25,3 +25,15 @@ const net = require('net');
 });
 });
 }
+
+{
+assert.throws(()=>{
+net.createConnection({
+host: ['192.168.0.1'],
+port: 8080,
+});
+},{
+code: 'ERR_INVALID_ARG_TYPE',
+name: 'TypeError',
+});
+}