# Error: connect() already called

**URL:** <https://mediasoup.discourse.group/t/error-connect-already-called/1107>\
**Category:** mediasoup libraries\
**Created:** [May 28, 2020, 2:10pm UTC](https://mediasoup.discourse.group/t/error-connect-already-called/1107 "2020-05-28T14:10:24Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dakinfeev](https://avatars.discourse-cdn.com/v4/letter/d/a9adbd/32.png) [@dakinfeev](https://mediasoup.discourse.group/u/dakinfeev)\
**Post date:** [May 28, 2020, 2:10pm UTC](https://mediasoup.discourse.group/t/error-connect-already-called/1107/1 "2020-05-28T14:10:24Z")

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Hello! i’m new in mediasoup. So i have problem with this error.  
That’s my case:

1. User1 calling User2.
2. User2 abort calling.
3. Client-side application close send transport
4. Server-side close producer

After that when i try to call him again. I got

> Error: connect() already called

should me close transport on server-side?

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**Author:** ![ibc](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/ibc/32/1540_2.png) [@ibc](https://mediasoup.discourse.group/u/ibc)\
**Post date:** [May 28, 2020, 2:15pm UTC](https://mediasoup.discourse.group/t/error-connect-already-called/1107/2 "2020-05-28T14:15:26Z")

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> [@dakinfeev](#):
>
> should me close transport on server-side?

Yes. Also look for the very same topic in this forum. It’s been asked multiple times.

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**Author:** ![dakinfeev](https://avatars.discourse-cdn.com/v4/letter/d/a9adbd/32.png) [@dakinfeev](https://mediasoup.discourse.group/u/dakinfeev)\
**Post date:** [May 28, 2020, 2:25pm UTC](https://mediasoup.discourse.group/t/error-connect-already-called/1107/3 "2020-05-28T14:25:49Z")

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Thanks for answer. Is it correct if I using one router for a one call-session I can close all transports in router?