java.lang.NullPointerException on demo page
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Abderrazak EL YOUSFI
Jul 4, 2017, 10:25:19 AM7/4/17
to BigBlueButton-Setup
hi,
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Attribute List
Every time i try to join a session on my server i got this error:
| Status Code | 500 |
| Exception Type | null |
| Message | null |
| Exception | java.lang.NullPointerException at org.apache.jsp.demo1_jsp.getJoinURL(demo1_jsp.java:223) at org.apache.jsp.demo1_jsp._jspService(demo1_jsp.java:1302) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:221) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) |
| Root Cause |
Header List
| Name | Value |
| x-forwarded-for | 172.26.5.7 |
| host | 127.0.0.1:8080 |
| connection | close |
| upgrade-insecure-requests | 1 |
| user-agent | Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36 |
| accept | text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8 |
| referer | http://webconf.ensfea.fr/ |
| accept-encoding | gzip, deflate |
| accept-language | fr-FR,fr;q=0.8,en-US;q=0.6,en;q=0.4 |
| javax.servlet.forward.request_uri | /demo/demo1.jsp |
| javax.servlet.forward.context_path | /demo |
| javax.servlet.forward.servlet_path | /demo1.jsp |
| javax.servlet.forward.query_string | username=test&action=create |
| javax.servlet.error.status_code | 500 |
| javax.servlet.jsp.jspException | java.lang.NullPointerException |
| javax.servlet.error.request_uri | /demo/demo1.jsp |
| javax.servlet.error.servlet_name | jsp |
| javax.servlet.error.exception | java.lang.NullPointerException |
my current configuration:
root@webconf:~# bbb-conf --check
BigBlueButton Server 1.1.0 (571)
Kernel version: 4.4.0-62-generic
Distribution: Ubuntu 16.04.2 LTS (64-bit)
Memory: 4046 MB
/var/www/bigbluebutton/client/conf/config.xml (bbb-client)
Port test (tunnel): webconf.ensfea.fr
red5: webconf.ensfea.fr
useWebrtcIfAvailable: true
/opt/freeswitch/etc/freeswitch/sip_profiles/external.xml (FreeSWITCH)
websocket port: 5066
WebRTC enabled: true
/etc/nginx/sites-available/bigbluebutton (nginx)
server name: webconf.ensfea.fr
port: 80, [::]:80
bbb-client dir: /var/www/bigbluebutton
/var/lib/tomcat7/webapps/bigbluebutton/WEB-INF/classes/bigbluebutton.properties (bbb-web)
bbb-web host: webconf.ensfea.fr
/var/lib/tomcat7/webapps/demo/bbb_api_conf.jsp (API demos)
url: webconf.ensfea.fr
/var/www/bigbluebutton/check/conf/config.xml (client check)
client check: webconf.ensfea.fr
/usr/share/red5/webapps/bigbluebutton/WEB-INF/red5-web.xml (red5)
voice conference: FreeSWITCH
/usr/local/bigbluebutton/core/scripts/bigbluebutton.yml (record and playback)
playback host: webconf.ensfea.fr
** Potential problems described below **
# Warning: API URL IPs do not match host:
#
# IP from ifconfig: 192.168.200.19
# /var/lib/tomcat7/webapps/demo/bbb_api_conf.jsp: webconf.ensfea.fr
....................
# Error: Could not connect to the configured hostname/IP address
#
#
# If your BigBlueButton server is behind a firewall, see FAQ.
# Error: Unable to connect to port 1935 (RTMP) on webconf.ensfea.fr
# Warning: The API demos are installed and accessible from:
#
#
# These API demos allow anyone to access your server without authentication
# to create/manage meetings and recordings. They are for testing purposes only.
# If you are running a production system, remove them by running:
#
# sudo apt-get purge bbb-demo
# Warning: The client self check is installed and accessible from:
#
#
# Error: Unable to reach default URL for presentation:
#
#
# Check value for beans.presentationService.defaultUploadedPresentation in
# /var/lib/tomcat7/webapps/bigbluebutton/WEB-INF/classes/bigbluebutton.properties
Any idea what can cause that java error ?
Best regards
Abderrazak
Fred Dixon
Jul 4, 2017, 11:43:40 AM7/4/17
to bigbluebu...@googlegroups.com
Hi Abderrazak,
It looks like the server is unable to connect to itself. Can you login via SSH and try
and see if it downloads. If not, check the DNS entry for webconf.ensfea.fr and the firewall rules for the server.
Regards,... Fred
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BigBlueButton Developer
@bigbluebutton
Abderrazak EL YOUSFI
Jul 5, 2017, 3:04:22 AM7/5/17
to BigBlueButton-Setup
Hello Mr DIXON,
First of all thank you for your quick reply, I launched the order below
Wget http://webconf.ensfea.fr/default.pdf
And I get the following result
Root @ webconf: ~ # wget http://webconf.ensfea.fr/default.pdf
--2017-07-05 08: 56: 37-- http://webconf.ensfea.fr/default.pdf
Resolution of webconf.ensfea.fr (webconf.ensfea.fr) ... 192.168.200.5
Connection to webconf.ensfea.fr (webconf.ensfea.fr) | 192.168.200.5 |: 80 ... failure: Connection refused.
Is this a blockage at the firewall?
cordially
Abderrazak.Fred Dixon
Jul 5, 2017, 7:24:24 AM7/5/17
to bigbluebu...@googlegroups.com
When trying
we get
400 Bad Request
The plain HTTP request was sent to HTTPS port
nginx/1.10.3 (Ubuntu)
Can you post the contents of
/etc/nginx/sites-available/bigbluebutton
Regards,... Fred
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Abderrazak EL YOUSFI
Jul 6, 2017, 4:37:33 AM7/6/17
to BigBlueButton-Setup
Hi Fred,
We found with the system administrator, the problem was related to a 192.168.200.5 address that was referenced in the virtual machine, the administrator changed it to 192.168.200.19 and the bigbluebutton demo is doing well. Now the problem is at the SSL level. We have filed 4 files in the ssl directory created (root @ webconf: / etc / nginx / ssl # ls
DBH-2048.pem
Webconf_ensfea_en.crt webconf.ensfea.fr.key
DigiCertCA.crt
webconf.ensfea.fr.csr
The system administrator modified the nginx.conf file and added the lines below because it does not understand the command, actually we already have the certificate files.
# Cat> /etc/nginx/ssl/bigbluebutton.example.com.key << 'END'
##
# SSL Settings
##
Ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
Ssl_prefer_server_ciphers on;
Ssl on;
#include /etc/nginx/ssl/DigiCertCA.crt;
Ssl_certificate /etc/nginx/ssl/webconf_ensfea_en.crt;
#include /etc/nginx/ssl/webconf.ensfea.fr.csr;
Ssl_certificate_key /etc/nginx/ssl/webconf.ensfea.fr.key;
##
I then created the dhp-2048.pem file with the command
# Openssl dhparam -out /etc/nginx/ssl/dhp-2048.pem 2048
I followed the procedure until the restart of bigbluebutton
# Bbb-conf --restart
When I go to the following address https://www.ssllabs.com/ssltest/
This server's certificate chain is incomplete. Grade capped to B.
When I login to https://webconf.ensfea.fr
I get the login page to start the demo of bigbluebutton but after entering the name and clicked "join", I have the error below which appears
| Name | Value |
| x-forwarded-for | 172.26.4.22 |
| host | 127.0.0.1:8080 |
| connection | close |
| user-agent | Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Firefox/52.0 |
| accept | text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 |
| accept-language | fr,fr-FR;q=0.8,en-US;q=0.5,en;q=0.3 |
| accept-encoding | gzip, deflate, br |
| referer | https://webconf.ensfea.fr/ |
| upgrade-insecure-requests | 1 |
| javax.servlet.forward.request_uri | /demo/demo1.jsp |
| javax.servlet.forward.context_path | /demo |
| javax.servlet.forward.servlet_path | /demo1.jsp |
| javax.servlet.forward.query_string | username=toto&action=create |
| javax.servlet.error.status_code | 500 |
| javax.servlet.jsp.jspException | java.lang.NullPointerException |
| javax.servlet.error.request_uri | /demo/demo1.jsp |
| javax.servlet.error.servlet_name | jsp |
| javax.servlet.error.exception | java.lang.NullPointerException |
Abderrazak EL YOUSFI
Jul 6, 2017, 4:44:04 AM7/6/17
to BigBlueButton-Setup
Hi Fred,
I forgot to submit the contents of the file / etc / nginx / sites-available / bigbluebutton
Root @ webconf: / etc / nginx # vi / etc / nginx / sites-available / bigbluebutton
Keepalive_requests 1000000000;
}
# Handle desktop sharing tunneling. forwards
# Requests to Red5 on port 5080.
Location / deskshare {
Proxy_pass http://127.0.0.1:5080;
Proxy_redirect default;
Proxy_set_header X-Forwarded-For $ proxy_add_x_forwarded_for;
Client_max_body_size 10m;
Client_body_buffer_size 128k;
Proxy_connect_timeout 90;
Proxy_send_timeout 90;
Proxy_read_timeout 90;
Proxy_buffer_size 4k;
Proxy_buffers 4 32k;
Proxy_busy_buffers_size 64k;
Proxy_temp_file_write_size 64k;
Include fastcgi_params;
}
# BigBlueButton landing page.
Location / {
Root / var / www / bigbluebutton-default;
Index.html index.htm;
Expires 1m;
}
# Include specific rules for record and playback
Include /etc/bigbluebutton/nginx/*.nginx;
#error_page 404 /404.html;
# Redirect server error pages to the static page /50x.html
#
Error_page 500 502 503 504 /50x.html;
Location = /50x.html {
Root / var / www / nginx-default;
}
}
Thank you again for your help
Cordially.
Abderrazak
Fred Dixon
Jul 6, 2017, 6:30:07 AM7/6/17
to bigbluebu...@googlegroups.com
Hi Abderrazak,
I just tried opening your site in FireFox (https://webconf.ensfea.fr/) and got a certificate warning. It looks like the configuration might be missing the intermediate certificate.
> The system administrator modified the nginx.conf file and added the lines below because it does not understand the command,
You can try using the steps for LetsEncrypt
as we know they work. Be sure to test your SSL certificate after configuration
Regards,... Fred
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