Closed
Description
Version
v20.3.0
Platform
Linux Square 5.15.0-73-generic #80-Ubuntu SMP Mon May 15 15:18:26 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
Subsystem
No response
What steps will reproduce the bug?
require('net').connect(443,'eva.csdn.net')
.once('connect',() => console.log('CONN'))
.once('error',E => console.log('ERR',E))
.once('close',() => console.log('CLOSE'))How often does it reproduce? Is there a required condition?
For a certain network environment and a certain target domain, always
What is the expected behavior? Why is that the expected behavior?
It either ouputs CONN or ERR ... followed by CLOSE
What do you see instead?
Since it only fails on one of my device, here is the output with envvar NODE_DEBUG=net
NET 20825: createConnection [
{ port: 443, host: 'eva.csdn.net' },
null,
[Symbol(normalizedArgs)]: true
]
NET 20825: pipe false undefined
NET 20825: connect: find host eva.csdn.net
NET 20825: connect: dns options { family: undefined, hints: 32 }
NET 20825: connect: autodetecting
NET 20825: connect/multiple: will try the following addresses [
{ address: '49.4.17.138', family: 4 },
{ address: '2407:c080:1400:57:f85b:6894:e943:69b1', family: 6 },
{ address: '49.4.45.146', family: 4 },
{ address: '2407:c080:1400:57:867a:db36:8b28:473f', family: 6 }
]
NET 20825: connect/multiple: attempting to connect to 49.4.17.138:443 (addressType: 4)
NET 20825: connect/multiple: setting the attempt timeout to 250 ms
NET 20825: connect/multiple: connection to 49.4.17.138:443 timed out
NET 20825: connect/multiple: attempting to connect to 2407:c080:1400:57:f85b:6894:e943:69b1:443 (addressType: 6)
NET 20825: connect/multiple: attempting to connect to 49.4.45.146:443 (addressType: 4)
NET 20825: connect/multiple: setting the attempt timeout to 250 ms
NET 20825: connect/multiple: connection to 49.4.45.146:443 timed out
NET 20825: connect/multiple: attempting to connect to 2407:c080:1400:57:867a:db36:8b28:473f:443 (addressType: 6)
NET 20825: destroy
NET 20825: close
NET 20825: close handle
ERR AggregateError
at internalConnectMultiple (node:net:1102:18)
at internalConnectMultiple (node:net:1161:5)
at Timeout.internalConnectMultipleTimeout (node:net:1644:3)
at listOnTimeout (node:internal/timers:575:11)
at process.processTimers (node:internal/timers:514:7) {
code: 'ENETUNREACH',
[errors]: [
Error: connect ENETUNREACH 2407:c080:1400:57:f85b:6894:e943:69b1:443 - Local (undefined:undefined)
at internalConnectMultiple (node:net:1160:40)
at Timeout.internalConnectMultipleTimeout (node:net:1644:3)
at listOnTimeout (node:internal/timers:575:11)
at process.processTimers (node:internal/timers:514:7) {
errno: -101,
code: 'ENETUNREACH',
syscall: 'connect',
address: '2407:c080:1400:57:f85b:6894:e943:69b1',
port: 443
},
Error: connect ENETUNREACH 2407:c080:1400:57:867a:db36:8b28:473f:443 - Local (undefined:undefined)
at internalConnectMultiple (node:net:1160:40)
at Timeout.internalConnectMultipleTimeout (node:net:1644:3)
at listOnTimeout (node:internal/timers:575:11)
at process.processTimers (node:internal/timers:514:7) {
errno: -101,
code: 'ENETUNREACH',
syscall: 'connect',
address: '2407:c080:1400:57:867a:db36:8b28:473f',
port: 443
}
]
}
The CLOSE is not outputted
Additional information
Reading the document, it says
Event: 'error'#
Added in: v0.1.90
Emitted when an error occurs. The 'close' event will be called directly following this event.
So I am expecting 'close' event to be emitted whenever 'error' occurred.
To debug the RC, here is the script I run
var
S = require('net').connect(443,'eva.csdn.net')
.once('connect',() => console.log('CONN'))
.once('error',E => console.log('ERR',E))
.once('close',() => console.log('CLOSE')),
Close = S._handle.close;
S._handle.close = function(Q)
{
console.log('Handle Close',Q)
Close.call(this,...Q)
}And here is what i got
NET 21124: connect/multiple: attempting to connect to 49.4.45.146:443 (addressType: 4)
NET 21124: connect/multiple: setting the attempt timeout to 250 ms
NET 21124: connect/multiple: connection to 49.4.45.146:443 timed out
Handle Close []
NET 21124: connect/multiple: attempting to connect to 2407:c080:1400:57:f85b:6894:e943:69b1:443 (addressType: 6)
NET 21124: connect/multiple: attempting to connect to 49.4.17.138:443 (addressType: 4)
NET 21124: connect/multiple: setting the attempt timeout to 250 ms
NET 21124: connect/multiple: connection to 49.4.17.138:443 timed out
NET 21124: connect/multiple: attempting to connect to 2407:c080:1400:57:867a:db36:8b28:473f:443 (addressType: 6)
NET 21124: destroy
NET 21124: close
NET 21124: close handle
Handle Close [ [Function (anonymous)] ]
ERR AggregateError
Now it becomes clear that internalConnectMultipleTimeout includes a handle.close() call that suppresses the callback of close in closeSocketHandle