Flutter

SocketException (SocketException: Failed host lookup: 'api.abc.com'

Dec 27, 2023, 21:38

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VedsagaOriginal post

Rank 5: Hypervisor

May 5, 2023, 09:50

sError:
OSError (OS Error: No address associated with hostname, errno = 7)
errorCode:
7
message:
"No address associated with hostname"

Summary

The user is experiencing a SocketException with the message "Failed host lookup: 'api.abc.com'". They have tried to replicate the issue but have not been able to. They suggest setting a breakpoint to check the endpoint or request. The user double checked the endpoint and it appears to be correct. It is suspected that the Client or endpoint is being reset, causing the issue. The user suggests creating an issue or recreating the instance of the Client when the internet is back online. This issue occurs when the app is opened without internet, then the internet is turned on and the account.get() method is called. The error message "

Vedsaga

Rank 5: Hypervisor

May 5, 2023, 09:53

It only happens when...

1. One the app with internet off and then turn on the internet
2. Then call the account.get()
3. Got this error

Vedsaga

Rank 5: Hypervisor

May 5, 2023, 09:58

it seems for some reason if you try to create instance of Client when there is no internet and if you switch on the internet then client instance will keep throwing this error ... Till you don't manually close the app and reopen. So, that when instance hostname lookup will happen this time considering internet is switched on

Vedsaga

Rank 5: Hypervisor

May 5, 2023, 10:00

I guess, what should have happened was if hostname lookup fail happen then re-attempt should have been made couple of once more time...

I guess this is place where concept of interceptor would be handy, remember couple of months back brought this into noticed I guess...

Vedsaga

Rank 5: Hypervisor

May 5, 2023, 10:01

for now I guess I have I will have change something... at my project Arch-level I guess to recreate the instance of Client when user-internet is backonline...

Vedsaga

Rank 5: Hypervisor

May 5, 2023, 10:09

should I create issue for this?

Drake

Admin

May 5, 2023, 16:05

I'm pretty sure seeing this because the Client or endpoint is being reset.

Vedsaga

Rank 5: Hypervisor

May 5, 2023, 16:10

I have double checked it actually, I am available loading endpoint from env and Appwrite service class is singleton so, not sure how would that happen but, I will double check if that's case. From what I observed I can say that I see the host name same in both cases

Drake

Admin

May 5, 2023, 16:15

try to double check the endpoint before the API call is made

Drake

Admin

May 5, 2023, 16:16

Ideally, set a breakpoint here: https://github.com/appwrite/sdk-for-flutter/blob/54f30faa4a4fab2af0fe57c172550b288c9cbb4b/lib/src/client_io.dart#L368 and you can check _endpoint or the request

Vedsaga

Rank 5: Hypervisor

May 5, 2023, 16:17

On it, I am gonna try in in just couple mins and update here

Vedsaga

Rank 5: Hypervisor

May 5, 2023, 17:00

for some reason it's happening anymore 👀 have tried to replicate but not happening... very wired

Vedsaga

Rank 5: Hypervisor

May 5, 2023, 17:02

I will let it open if it happen again then report here else I will close

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