Uncaught ECONNRESET exception
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- JavaScript
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Description
When I use Needle to check the following link the process fails with no error messages because of an uncaught exception. This makes it impossible to use in another system as it takes down the whole process.
I have found a solution but I do not understand the consequences of my change, nor do I know how to write tests for it. I hope someone else will be able to pick this up. Someone has obviously thought about this before and added some code but commented it out: https://github.com/tomas/needle/blob/f9d554e0ba1fc545fb406b6093b620bbab92c43c/lib/needle.js#L722-L727
My solution was to add the following in the same place:
out.on('error', function(err) {
had_error(err)
});
Then when I run the test I get output: Error: aborted
Test:
DEBUG=needle node bin/needle get https://webharvest.gov/peth04/20041014212036/http://la.water.usgs.gov/pdfs/QW_DomWells_Chicot.pdf
needle Making request #1 {
agent: null,
localAddress: undefined,
lookup: undefined,
protocol: 'https:',
host: 'webharvest.gov',
port: 443,
path: '/peth04/20041014212036/http://la.water.usgs.gov/pdfs/QW_DomWells_Chicot.pdf',
method: 'get',
headers: {
accept: '*/*',
'user-agent': 'Needle/3.2.0 (Node.js v20.4.0; linux x64)',
'accept-encoding': 'gzip, deflate, br',
host: 'webharvest.gov'
}
} +0ms
needle Got response 302 {
location: '/peth04/20041016222033/http://la.water.usgs.gov/pdfs/QW_DomWells_Chicot.pdf',
'content-length': '0',
date: 'Wed, 12 Jul 2023 08:21:15 GMT',
server: 'Unknown',
'strict-transport-security': 'max-age=63072000; includeSubDomains; preload'
} +538ms
needle Redirecting to https://webharvest.gov/peth04/20041016222033/http://la.water.usgs.gov/pdfs/QW_DomWells_Chicot.pdf +1ms
needle Making request #2 {
agent: null,
localAddress: undefined,
lookup: undefined,
protocol: 'https:',
host: 'webharvest.gov',
port: 443,
path: '/peth04/20041016222033/http://la.water.usgs.gov/pdfs/QW_DomWells_Chicot.pdf',
method: 'GET',
headers: {
accept: '*/*',
'user-agent': 'Needle/3.2.0 (Node.js v20.4.0; linux x64)',
'accept-encoding': 'gzip, deflate, br',
host: 'webharvest.gov'
}
} +0ms
needle Got response 200 {
'x-archive-orig-server': 'Microsoft-IIS/5.0',
'x-archive-orig-etag': '"0baf7b02818c41:14c2"',
'x-archive-orig-connection': 'close',
'x-archive-orig-content-type': 'application/pdf',
'x-archive-orig-last-modified': 'Thu, 01 Apr 2004 20:34:12 GMT',
'x-archive-orig-content-length': '15081274',
'x-archive-orig-date': 'Sat, 16 Oct 2004 22:20:48 GMT',
'x-archive-orig-accept-ranges': 'bytes',
'content-type': 'application/pdf',
'content-length': '15081274',
date: 'Wed, 12 Jul 2023 08:21:15 GMT',
server: 'Unknown',
'strict-transport-security': 'max-age=63072000; includeSubDomains; preload'
} +741ms
needle Error: aborted
needle at connResetException (node:internal/errors:720:14)
needle at TLSSocket.socketCloseListener (node:_http_client:455:19)
needle at TLSSocket.emit (node:events:524:35)
needle at node:net:334:12
needle at TCP.done (node:_tls_wrap:631:7) +21s
needle Error: aborted
needle at connResetException (node:internal/errors:720:14)
needle at TLSSocket.socketCloseListener (node:_http_client:455:19)
needle at TLSSocket.emit (node:events:524:35)
needle at node:net:334:12
needle at TCP.done (node:_tls_wrap:631:7) +0ms
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start in lib/needle.js around the commented error-handling code at lines 722-727, then reproduce the failure with the bin/needle command and the URL shown in the issue. Trace how the response stream handles ECONNRESET or aborted errors, and verify that the process no longer exits from an uncaught exception while the error is still reported to the caller.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, node.js
- Domain
- api, backend, networking
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100