test: improve reliability in http2-session-timeout

Use `setImmediate()` instead of `setTimeout()` to improve robustness of test-http2-session-timeout. Fixes: #20628 PR-URL: #22026 Reviewed-By: Anatoli Papirovski <[email protected]> Reviewed-By: Jon Moss <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Trivikram Kamat <[email protected]>

Author: Trott

test/sequential/test-http2-session-timeout.js

@@ -3,13 +3,12 @@
 constcommon=require('../common');
 if(!common.hasCrypto)
 common.skip('missing crypto');
-consth2=require('http2');
+consthttp2=require('http2');
 
 constserverTimeout=common.platformTimeout(200);
-constcallTimeout=common.platformTimeout(20);
 constmustNotCall=common.mustNotCall();
 
-constserver=h2.createServer();
+constserver=http2.createServer();
 server.timeout=serverTimeout;
 
 server.on('request',(req,res)=>res.end());
@@ -19,7 +18,7 @@ server.listen(0, common.mustCall(() =>{
 constport=server.address().port;
 
 consturl=`http://localhost:${port}`;
-constclient=h2.connect(url);
+constclient=http2.connect(url);
 conststartTime=process.hrtime();
 makeReq();
 
@@ -37,7 +36,7 @@ server.listen(0, common.mustCall(() =>{
 constdiff=process.hrtime(startTime);
 constmilliseconds=(diff[0]*1e3+diff[1]/1e6);
 if(milliseconds<serverTimeout*2){
-setTimeout(makeReq,callTimeout);
+setImmediate(makeReq);
 }else{
 server.removeListener('timeout',mustNotCall);
 server.close();