IT43268: NODEJS PROCESS TERMINATES ON TIMEOUT ERROR

APAR status

• Closed as program error.

Error description

• nodejs process terminates on timeout error with below error
  stack in stderr.
  _http_outgoing.js:561    throw new ERR_HTTP_HEADERS_SENT('set');
  
     ^
  
  Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are
  sent to the client
     at new NodeError (internal/errors.js:322:7)
     at ServerResponse.setHeader (_http_outgoing.js:561:11)
     at ServerResponse.header (/ace/ace-12.0.7.0/server/nodejs_al
  l/node_modules/express/lib/response.js:794:10)
     at ServerResponse.send (/ace/ace-12.0.7.0/server/nodejs_all/
  node_modules/express/lib/response.js:174:12)
     at ServerResponse.<anonymous> (/ace/ace-12.0.7.0/server/node
  js_all/node_modules/@ibm-app-connect/ace-admin-server/src/middl
  eware/timeout.js:1:437)
     at ServerResponse.emit (events.js:400:28)
     at Timeout._onTimeout (/ace/ace-12.0.7.0/server/nodejs_all/n
  ode_modules/@ibm-app-connect/ace-admin-server/src/middleware/ti
  meout.js:1:279)
     at listOnTimeout (internal/timers.js:557:17)
     at processTimers (internal/timers.js:500:7) {
   code: 'ERR_HTTP_HEADERS_SENT'
  }
  

Local fix

• NA
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All Users of App Connect Enterprise V12 with WEBUI requests
  failing because of timeout
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  When WEBUI times out, possibly due to network issues, nodejs
  process crashes with below error  as seen in  stderr file
  
  _http_outgoing.js:561    throw new ERR_HTTP_HEADERS_SENT('set');
  
  Further requests are not fulfilled unless broker is restarted.
  

Problem conclusion

• The product has been modified such that nodejs process no longer
  crashes on WebUI timeout and further requests are accepted.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v12.0      12.0.8.0
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  APP CONNECT ENT

• Fixed component ID

  5724J0560

Applicable component levels