# Websocket wss failed **URL:** \ **Category:** Issues developing apps\ **Tags:** v2\ **Created:** [October 18, 2021, 12:37am UTC](https://openvidu.discourse.group/t/websocket-wss-failed/3501 "2021-10-18T00:37:36Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![andyzhou](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/andyzhou/32/1705_2.png) [@andyzhou](https://openvidu.discourse.group/u/andyzhou)\ **Post date:** [October 18, 2021, 12:37am UTC](https://openvidu.discourse.group/t/websocket-wss-failed/3501/1 "2021-10-18T00:37:36Z")
hello, I’ve compiled and installed an openvidu server and classroom-demo in Ubuntu 20.04. but the classroom-demo browser can’t see the video , and reports error in console: ```auto WebSocket connection to 'wss://18.183.92.166:4443/openvidu?sessionId=ses_NtupFDW3OG' failed: main.js 1 ``` I tested curl in another mac, it seems ok. so what’s the problem? logs: ```auto zhh@/Users/zhh $ curl -k --no-buffer -H 'Connection: keep-alive, Upgrade' -H 'Upgrade: websocket' -v -H 'Sec-WebSocket-Version: 13' -H 'Sec-WebSocket-Key: websocket' https://18.183.92.166:4443/openvidu\?sessionId\=ses_NtupFDW3OG ws | od -t c % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* Trying 18.183.92.166... * TCP_NODELAY set * Connected to 18.183.92.166 (18.183.92.166) port 4443 (#0) * ALPN, offering http/1.1 * Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH * successfully set certificate verify locations: * CAfile: /Users/zhh/anaconda3/ssl/cacert.pem CApath: none * TLSv1.2 (OUT), TLS header, Certificate Status (22): } [5 bytes data] * TLSv1.2 (OUT), TLS handshake, Client hello (1): } [512 bytes data] 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* TLSv1.2 (IN), TLS handshake, Server hello (2): { [81 bytes data] * TLSv1.2 (IN), TLS handshake, Certificate (11): { [913 bytes data] * TLSv1.2 (IN), TLS handshake, Server key exchange (12): { [333 bytes data] * TLSv1.2 (IN), TLS handshake, Server finished (14): { [4 bytes data] * TLSv1.2 (OUT), TLS handshake, Client key exchange (16): } [70 bytes data] * TLSv1.2 (OUT), TLS change cipher, Client hello (1): } [1 bytes data] * TLSv1.2 (OUT), TLS handshake, Finished (20): } [16 bytes data] * TLSv1.2 (IN), TLS change cipher, Client hello (1): { [1 bytes data] * TLSv1.2 (IN), TLS handshake, Finished (20): { [16 bytes data] * SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384 * ALPN, server did not agree to a protocol * Server certificate: * subject: C=ES; ST=Some-State; O=OpenVidu; emailAddress=openvidu@gmail.com * start date: May 30 15:24:17 2017 GMT * expire date: May 28 15:24:17 2027 GMT * issuer: C=ES; ST=Some-State; O=OpenVidu; emailAddress=openvidu@gmail.com * SSL certificate verify result: self signed certificate (18), continuing anyway. } [5 bytes data] > GET /openvidu?sessionId=ses_NtupFDW3OG HTTP/1.1 > Host: 18.183.92.166:4443 > User-Agent: curl/7.61.0 > Accept: */* > Connection: keep-alive, Upgrade > Upgrade: websocket > Sec-WebSocket-Version: 13 > Sec-WebSocket-Key: websocket > { [5 bytes data] < HTTP/1.1 101 < Vary: Origin < Vary: Access-Control-Request-Method < Vary: Access-Control-Request-Headers < Set-Cookie: OVJSESSIONID=FDC43529EAEDBCF6D747E33F569A6C6D; Path=/; Secure; HttpOnly < Upgrade: websocket < Connection: upgrade, keep-alive < Sec-WebSocket-Accept: qVby4apnn2tTYtB1nPPVYUn68gY= < X-Content-Type-Options: nosniff < X-XSS-Protection: 1; mode=block < Cache-Control: no-cache, no-store, max-age=0, must-revalidate < Pragma: no-cache < Expires: 0 < Strict-Transport-Security: max-age=31536000 ; includeSubDomains < X-Frame-Options: DENY < Date: Mon, 18 Oct 2021 00:18:01 GMT < Keep-Alive: timeout=60 ``` ---
**Author:** ![cruizba](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/cruizba/32/18_2.png) [@cruizba](https://openvidu.discourse.group/u/cruizba)\ **Post date:** [October 18, 2021, 8:52am UTC](https://openvidu.discourse.group/t/websocket-wss-failed/3501/2 "2021-10-18T08:52:09Z")
Is your classroom-demo running through https at the same ip `18.183.92.166` ? ---
**Author:** ![andyzhou](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/andyzhou/32/1705_2.png) [@andyzhou](https://openvidu.discourse.group/u/andyzhou)\ **Post date:** [October 18, 2021, 12:42pm UTC](https://openvidu.discourse.group/t/websocket-wss-failed/3501/3 "2021-10-18T12:42:06Z")
yes, through https. but with deferent port and the port is 5000. and the openvidu port is 4443. ---
**Author:** ![cruizba](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/cruizba/32/18_2.png) [@cruizba](https://openvidu.discourse.group/u/cruizba)\ **Post date:** [October 18, 2021, 12:46pm UTC](https://openvidu.discourse.group/t/websocket-wss-failed/3501/4 "2021-10-18T12:46:11Z")
Please, can you describe how did you deploy OpenVidu, and how are you deploying the classroom-demo? ---
**Author:** ![andyzhou](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/andyzhou/32/1705_2.png) [@andyzhou](https://openvidu.discourse.group/u/andyzhou)\ **Post date:** [October 18, 2021, 1:17pm UTC](https://openvidu.discourse.group/t/websocket-wss-failed/3501/5 "2021-10-18T13:17:57Z")
I run compile openvidu and classroom-demo source and configue application.properties. then run command: ```auto mvn exec:java ``` ---
**Author:** ![andyzhou](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/andyzhou/32/1705_2.png) [@andyzhou](https://openvidu.discourse.group/u/andyzhou)\ **Post date:** [October 18, 2021, 1:22pm UTC](https://openvidu.discourse.group/t/websocket-wss-failed/3501/6 "2021-10-18T13:22:09Z")
My kurento will shut down the video about 150seconds, also a problem. I deloyed a docker kurento with independented coturn. and I run the tutorial HelloWorldApp. But the video will broken automatically about 150seconds. What’s the probably problem? when the remote video is automatically stopped, I click Stop, chrome console will display: “[sendMessage] Skip, WebSocket session isn’t open” this is the logs of HelloWorldApp. thank you all! ```auto 2021-10-15 02:30:50.955 INFO 551016 --- [ventExec-e2-t30] org.kurento.tutorial.helloworld.Handler : [WebRtcEndpoint::MediaFlowInStateChange] source: user33d6112e-4606-26f0-31ea-251b67328709_webrtcendpoint, timestamp: 1634265050, tags: [], state: FLOWING, padName: default, mediaType: VIDEO 2021-10-15 02:30:51.082 INFO 551016 --- [ventExec-e2-t30] org.kurento.tutorial.helloworld.Handler : [WebRtcEndpoint::MediaStateChanged] source: user33d6112e-4606-26f0-31ea-251b67328709_webrtcendpoint, timestamp: 1634265051, tags: [], oldState: DISCONNECTED, newState: CONNECTED 2021-10-15 02:33:17.594 ERROR 551016 --- [nio-8443-exec-8] org.kurento.tutorial.helloworld.Handler : [Handler::handleTransportError] Exception: java.io.EOFException, sessionId: 33d6112e-4606-26f0-31ea-251b67328709 2021-10-15 02:33:17.595 WARN 551016 --- [nio-8443-exec-8] org.kurento.tutorial.helloworld.Handler : [Handler::afterConnectionClosed] status: CloseStatus[code=1011, reason=null], sessionId: 33d6112e-4606-26f0-31ea-251b67328709 2021-10-15 02:33:17.595 INFO 551016 --- [nio-8443-exec-8] org.kurento.tutorial.helloworld.Handler : [Handler::stop] Release the Media Pipeline ``` ---
**Author:** ![andyzhou](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/andyzhou/32/1705_2.png) [@andyzhou](https://openvidu.discourse.group/u/andyzhou)\ **Post date:** [October 18, 2021, 1:27pm UTC](https://openvidu.discourse.group/t/websocket-wss-failed/3501/7 "2021-10-18T13:27:01Z")
[https://mydomain.com:4443/dashboard/#/](https://mydomain.com:4443/dashboard/#/) Error connecting to session: [0] Http failure response for [https://18.183.92.166:4443/openvidu/api/sessions:](https://18.183.92.166:4443/openvidu/api/sessions:) 0 Unknown Error in chrome console,it reports error: ```auto Failed to load resource: net::ERR_CERT_AUTHORITY_INVALID ``` But if I using the IP to connect will be ok. [https://18.183.92.166:4443/dashboard/#/](https://18.183.92.166:4443/dashboard/#/) what’s the problem? ---
**Author:** ![cruizba](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/cruizba/32/18_2.png) [@cruizba](https://openvidu.discourse.group/u/cruizba)\ **Post date:** [October 18, 2021, 1:38pm UTC](https://openvidu.discourse.group/t/websocket-wss-failed/3501/8 "2021-10-18T13:38:42Z")
Are you deploying in a VPS, or you’re just trying OpenVidu in your LAN network? ---
**Author:** ![cruizba](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/cruizba/32/18_2.png) [@cruizba](https://openvidu.discourse.group/u/cruizba)\ **Post date:** [October 18, 2021, 1:45pm UTC](https://openvidu.discourse.group/t/websocket-wss-failed/3501/9 "2021-10-18T13:45:12Z")
If you’re using `openvidu-server-kms` docker image, this image is used only for **local development** If you’re in a VPS and you want to deploy there OpenVidu with openvidu-classroom, please follow this deployment instructions first: - **CE** - [AWS - OpenVidu Docs](https://docs.openvidu.io/en/stable/deployment/ce/aws/) - [On premises - OpenVidu Docs](https://docs.openvidu.io/en/stable/deployment/ce/on-premises/) - **PRO/ENTERPRISE** - [AWS - OpenVidu Docs](https://docs.openvidu.io/en/stable/deployment/pro/aws/) - [On premises - OpenVidu Docs](https://docs.openvidu.io/en/stable/deployment/pro/on-premises/) - **ENTERPRISE HIGH AVAILABILITY** : - [AWS - OpenVidu Docs](https://docs.openvidu.io/en/stable/deployment/enterprise/aws/) Secondly, you can create your own image with your code following this: - [openvidu-classroom - OpenVidu Docs](https://docs.openvidu.io/en/stable/demos/openvidu-classroom/#deploy-openvidu-classroom) If you don’t want to create any docker image, you just need to run the classroom-demo at port 5442. With the official deployment you will be able to access your app through `https://DOMAIN_OR_PUBLIC_IP/` (our nginx proxy will reverse proxy from 5442 to 443) and openvidu request will go through `https://DOMAIN_OR_PUBLIC_IP/openvidu` (our nginx proxy will reverse proxy from 5443 to 443).