NodeJs agent hangs frequently immediately after posting results file

[sidbala]

Hi there,

I am running iOS devices with the nodejs agents. They have been rock solid for a while. However, recently, I have been noticing that sometimes the agents simply hang immediately after they've completed a test run and the results have been uploaded.

Control-c seems to bring up a message stating that the process will exit after the current run is finished - but that never happens - it is waiting for something forever.

So I have all my iOS agents simply stalling forever.

What can I do to debug this? How do I hook up a debugger to the agent process and trace the execution to the wait point?

Thanks,
Sid

---

The last few log lines before where it hangs:

Code:

F Aug_11_20:17:10.364 wpt_client.js:194 IncomingMessage.<anonymous> : Got response:
F Aug_11_20:17:10.365 wpt_client.js:590 Client.postResultFile_ : postResultFile: job=140812_39_4B resultFile=present fields=[] callback=function () { [native code] }
D Aug_11_20:17:10.365 multipart.js:92 Multipart.exports.Multipart.addPart : addPart: name=id body=140812_39_4B headers=["Content-Type: text/plain"]
D Aug_11_20:17:10.366 multipart.js:92 Multipart.exports.Multipart.addPart : addPart: name=location body=YVR_iPhone5S headers=undefined
D Aug_11_20:17:10.366 multipart.js:92 Multipart.exports.Multipart.addPart : addPart: name=pc body=07bf8ed782b14b3a2e8d2bf3a388126b5f6cb300 headers=undefined
D Aug_11_20:17:10.367 multipart.js:92 Multipart.exports.Multipart.addPart : addPart: name=_runNumber body=3 headers=undefined
D Aug_11_20:17:10.367 multipart.js:92 Multipart.exports.Multipart.addPart : addPart: name=_cacheWarmed body=0 headers=undefined
D Aug_11_20:17:10.368 multipart.js:115 Multipart.exports.Multipart.addFilePart : addFilePart: name=file filename=3_results.zip size=5196
D Aug_11_20:17:10.369 wpt_client.js:629 Client.postResultFile_ : Writing a local copy of 3_results.zip
F Aug_11_20:17:10.369 multipart.js:147 Multipart.exports.Multipart.getHeadersAndBody : Multipart: {"Content-Type":"multipart/form-data; boundary=-----12345correcthorsebatterystaple6789","Content-Length":6013}, content:
-------12345correcthorsebatterystaple6789
Content-Disposition: form-data; name="id"
Content-Type: text/plain

140812_39_4B
-------12345correcthorsebatterystaple6789
Content-Disposition: form-data; name="location"

YVR_iPhone5S
-------12345correcthorsebatterystaple6789
Content-Disposition: form-data; name="pc"

07bf8ed782b14b3a2e8d2bf3a388126b5f6cb300
-------12345correcthorsebatterystaple6789
Content-Disposition: form-data; name="_runNumber"

3
-------12345correcthorsebatterystaple6789
Content-Disposition: form-data; name="_cacheWarmed"

0
-------12345correcthorsebatterystaple6789
Content-Disposition: form-data; name="file"; filename="3_results.zip"
Content-Type: application/zip
Content-Length: 5196
Content-Transfer-Encoding: binary

[5196 bytes]
-------12345correcthorsebatterystaple6789--
F Aug_11_20:17:10.374 process_utils.js:383 app.getNextTask_ : (agent_main) no next task