test: fallback to IPv4 if IPv6 is unavailable

openssl seems to default to use IPv6.
This change adds a checks if IPv6 is unavailable and uses IPv4 instead.
On the Node.js CI IBM i build system IPv6 is currently disabled.
This change should resolve the following test case failures:
- https://ci.nodejs.org/job/node-test-commit-ibmi/nodes=ibmi73-ppc64/1085/testReport/(root)/test/sequential_test_tls_psk_client_/
- https://ci.nodejs.org/job/node-test-commit-ibmi/nodes=ibmi73-ppc64/1085/testReport/(root)/test/sequential_test_tls_securepair_client_/
PR-URL: #47017
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>

Author: abmusse

test/sequential/test-tls-psk-client.js

@@ -14,6 +14,7 @@ const { spawn } = require('child_process');
 constCIPHERS='PSK+HIGH';
 constKEY='d731ef57be09e5204f0b205b60627028';
 constIDENTITY='Client_identity';// Hardcoded by `openssl s_server`
+constuseIPv4=!common.hasIPv6;
 
 constserver=spawn(common.opensslCli,[
 's_server',
@@ -23,6 +24,7 @@ const server = spawn(common.opensslCli, [
 '-psk_hint',IDENTITY,
 '-nocert',
 '-rev',
+ ...(useIPv4 ? ['-4'] : []),
 ],{encoding: 'utf8'});
 letserverErr='';
 letserverOut='';

test/sequential/test-tls-securepair-client.js

@@ -38,6 +38,8 @@ const fixtures = require('../common/fixtures');
 consttls=require('tls');
 constspawn=require('child_process').spawn;
 
+constuseIPv4=!common.hasIPv6;
+
 test1();
 
 // simple/test-tls-securepair-client
@@ -64,7 +66,9 @@ function test(keyPath, certPath, check, next) {
 constserver=spawn(common.opensslCli,['s_server',
 '-accept',0,
 '-cert',fixtures.path(certPath),
-'-key',fixtures.path(keyPath)]);
+'-key',fixtures.path(keyPath),
+ ...(useIPv4 ? ['-4'] : []),
+]);
 server.stdout.pipe(process.stdout);
 server.stderr.pipe(process.stdout);