# createProducerTransport Error

**URL:** <https://mediasoup.discourse.group/t/createproducertransport-error/483>\
**Category:** mediasoup libraries\
**Created:** [December 21, 2019, 9:54pm UTC](https://mediasoup.discourse.group/t/createproducertransport-error/483 "2019-12-21T21:54:56Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![qasim483](https://avatars.discourse-cdn.com/v4/letter/q/ebca7d/32.png) [@qasim483](https://mediasoup.discourse.group/u/qasim483)\
**Post date:** [December 21, 2019, 9:54pm UTC](https://mediasoup.discourse.group/t/createproducertransport-error/483/1 "2019-12-21T21:54:56Z")

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On my node.js server, some times I get this error, It suddenly started to appear, 4-5 days back it was working fine. I am using mediasoup 3.4.1 on Linux and Mac.

createProducerTransport —  
(node:89244) UnhandledPromiseRejectionWarning: Error: no available port [udp:127.0.0.1, attempt:101]  
at Channel.\_processMessage (/Volumes/Projects/apps/letskinect/events12/server/node\_modules/mediasoup/lib/Channel.js:220:37)  
at Socket.Channel.\_consumerSocket.on (/Volumes/Projects/apps/letskinect/events12/server/node\_modules/mediasoup/lib/Channel.js:80:34)  
at Socket.emit (events.js:198:13)  
at addChunk (\_stream\_readable.js:288:12)  
at readableAddChunk (\_stream\_readable.js:269:11)  
at Socket.Readable.push (\_stream\_readable.js:224:10)  
at Pipe.onStreamRead [as onread] (internal/stream\_base\_commons.js:94:17)

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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:** [December 22, 2019, 1:54am UTC](https://mediasoup.discourse.group/t/createproducertransport-error/483/2 "2019-12-22T01:54:28Z")

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> [@qasim483](#):
>
> no available port [udp:127.0.0.1, attempt:101]

So you have not open ports enough, just that. Read the documentation, please.

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**Author:** ![qasim483](https://avatars.discourse-cdn.com/v4/letter/q/ebca7d/32.png) [@qasim483](https://mediasoup.discourse.group/u/qasim483)\
**Post date:** [December 22, 2019, 9:55am UTC](https://mediasoup.discourse.group/t/createproducertransport-error/483/3 "2019-12-22T09:55:25Z")

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Thanks for the answer, On My localhost, all ports are open. I will check again and inform you. thanks again

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<div class="post-metadata">

**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:** [December 22, 2019, 2:50pm UTC](https://mediasoup.discourse.group/t/createproducertransport-error/483/4 "2019-12-22T14:50:38Z")

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I didn’t mean that. I mean that you may giving not enough port range to the mediasoup Worker. Or, probably, you are never closing mediasoup WebRtcTransports or Routers so available ports exhaust.