# firefox websocket error

**URL:** <https://mediasoup.discourse.group/t/firefox-websocket-error/415>\
**Category:** mediasoup-demo\
**Created:** [November 19, 2019, 9:20am UTC](https://mediasoup.discourse.group/t/firefox-websocket-error/415 "2019-11-19T09:20:48Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![qixi](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/qixi/32/56_2.png) [@qixi](https://mediasoup.discourse.group/u/qixi)\
**Post date:** [November 19, 2019, 9:20am UTC](https://mediasoup.discourse.group/t/firefox-websocket-error/415/1 "2019-11-19T09:20:48Z")

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I use this demo local, chrome works well, firefox with this error log.  
**v3 branch latest code**  
**firefox Version 70.0.1 (64-bit)**

protoo-client:WebSocketTransport constructor() [url:wss://localhost:4443/?roomId=ziugvbj2&peerId=jnyo5kv1, options:undefined] +0ms [common.js:121](https://localhost:3000/node_modules/debug/src/common.js)

protoo-client:WebSocketTransport \_runWebSocket() [currentAttempt:1] +2ms [common.js:121](https://localhost:3000/node_modules/debug/src/common.js)

protoo-client:Peer constructor() +0ms [common.js:121](https://localhost:3000/node_modules/debug/src/common.js)

Firefox can’t establish a connection to the server at wss://localhost:4443/?roomId=ziugvbj2&peerId=jnyo5kv1. [browser.js:25](https://localhost:3000/node_modules/websocket/lib/browser.js)

protoo-client:ERROR:WebSocketTransport WebSocket “error” event +0ms [common.js:121](https://localhost:3000/node_modules/debug/src/common.js)

protoo-client:WARN:WebSocketTransport WebSocket “close” event [wasClean:false, code:1015, reason:""] +0ms [common.js:121](https://localhost:3000/node_modules/debug/src/common.js)

protoo-client:Peer emit “failed” [currentAttempt:1] +78ms

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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:** [November 19, 2019, 9:30am UTC](https://mediasoup.discourse.group/t/firefox-websocket-error/415/2 "2019-11-19T09:30:24Z")

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Sorry, not related to mediasoup nor even related to the mediasoup-demo. Please search in Google about invalid certificates and secure WebSocket.

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<div class="post-metadata">

**Author:** ![qixi](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/qixi/32/56_2.png) [@qixi](https://mediasoup.discourse.group/u/qixi)\
**Post date:** [November 19, 2019, 9:35am UTC](https://mediasoup.discourse.group/t/firefox-websocket-error/415/3 "2019-11-19T09:35:34Z")

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anyway, big thanks for reply

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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 2, 2019, 11:11pm UTC](https://mediasoup.discourse.group/t/firefox-websocket-error/415/4 "2019-12-02T23:11:02Z")

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