配置和运行janus

1. 配置nginx

安装nginx，主要用来提供web访问。

生成证书

mkdir -p ~/cert
cd ~/cert
# CA私钥
openssl genrsa -out key.pem 2048
# 自签名证书
openssl req -new -x509 -key key.pem -out cert.pem -days 1095

安装nginx

#下载nginx 1.15.8版本
wget http://nginx.org/download/nginx-1.15.8.tar.gz
tar xvzf nginx-1.15.8.tar.gz
cd nginx-1.15.8/


# 配置，一定要支持https
./configure --with-http_ssl_module 

# 编译
make

#安装
sudo make install 

修改nginx配置文件

/usr/local/nginx/conf/nginx.conf
指向janus所在目录/opt/janus/share/janus/demos

# HTTPS server
    server {
        listen       443 ssl;
        server_name  localhost;
                                # 配置相应的key
        ssl_certificate      /root/cert/cert.pem;
        ssl_certificate_key  /root/cert/key.pem;

        ssl_session_cache    shared:SSL:1m;
        ssl_session_timeout  5m;

        ssl_ciphers  HIGH:!aNULL:!MD5;
        ssl_prefer_server_ciphers  on;
                                # 指向janus demo所在目录
        location / {
            root   /opt/janus/share/janus/demos;
            index  index.html index.htm;
        }
    }

启动nginx

然后通过
https://49.232.250.45
可以访问到界面，但此时还不能正常通话。

安装和启动coturn

sudo apt-get install libssl-dev
sudo apt-get install libevent-dev


#git clone https://github.com/coturn/coturn 
#cd coturn
# 提供另一种安装方式turnserver是coturn的升级版本
wget http://coturn.net/turnserver/v4.5.0.7/turnserver-4.5.0.7.tar.gz
tar xfz turnserver-4.5.0.7.tar.gz
cd turnserver-4.5.0.7
 
./configure 
make && sudo make install

启动

sudo nohup turnserver -L 0.0.0.0 --min-port 50000 --max-port 60000  -a -u lqf:123456 -v -f -r nort.gov &

需要在安全组开放端口：
TCP/UDP 3478
UDP 50000-60000

配置janus相关配置文件

包含janus.jcfg,janus.transport.http.jcfg,janus.transport.websockets.jcfg
注意:如果不需要http支持，则可以不配置janus.transport.http.jcfg

配置janus.jcfg

stun_server = "49.232.250.45"
        stun_port = 3478
        nice_debug = false

nat_1_1_mapping = "49.232.250.45"


# credentials to authenticate...
        turn_server = "49.232.250.45"
        turn_port = 3478
        turn_type = "udp"
        turn_user = "hnb"
        turn_pwd = "123456"

配置janus.transport.http.jcfg

general: {
        #events = true                                  # Whether to notify event handlers about transport events (default=true)
        json = "indented"                               # Whether the JSON messages should be indented (default),
                                                                        # plain (no indentation) or compact (no indentation and no spaces)
        base_path = "/janus"                    # Base path to bind to in the web server (plain HTTP only)
        threads = "unlimited"                   # unlimited=thread per connection, number=thread pool
        http = true                                             # Whether to enable the plain HTTP interface
        port = 8088                                             # Web server HTTP port
        #interface = "eth0"                             # Whether we should bind this server to a specific interface only
        #ip = "192.168.0.1"                             # Whether we should bind this server to a specific IP address (v4 or v6) only
        https = true                                    # Whether to enable HTTPS (default=false)
        secure_port = 8089                              # Web server HTTPS port, if enabled
        #secure_interface = "eth0"              # Whether we should bind this server to a specific interface only
        #secure_ip = "192.168.0.1"              # Whether we should bind this server to a specific IP address (v4 or v6) only
        #acl = "127.,192.168.0."                # Only allow requests coming from this comma separated list of addresses
}

certificates: {
        cert_pem = "/root/cert/cert.pem"
        cert_key = "/root/cert/key.pem"
        #cert_pwd = "secretpassphrase"
        #ciphers = "PFS:-VERS-TLS1.0:-VERS-TLS1.1:-3DES-CBC:-ARCFOUR-128"
}

配置janus.transport.websockets.jcfg

general: {
        #events = true                                  # Whether to notify event handlers about transport events (default=true)
        json = "indented"                               # Whether the JSON messages should be indented (default),
                                                                        # plain (no indentation) or compact (no indentation and no spaces)
        #pingpong_trigger = 30                  # After how many seconds of idle, a PING should be sent
        #pingpong_timeout = 10                  # After how many seconds of not getting a PONG, a timeout should be detected

        ws = true                                               # Whether to enable the WebSockets API
        ws_port = 8188                                  # WebSockets server port
        #ws_interface = "eth0"                  # Whether we should bind this server to a specific interface only
        #ws_ip = "192.168.0.1"                  # Whether we should bind this server to a specific IP address only
        wss = true                                              # Whether to enable secure WebSockets
        wss_port = 8989                         # WebSockets server secure port, if enabled
        #wss_interface = "eth0"                 # Whether we should bind this server to a specific interface only
        #wss_ip = "192.168.0.1"                 # Whether we should bind this server to a specific IP address only
        #ws_logging = "err,warn"                # libwebsockets debugging level as a comma separated list of things
                                                                        # to debug, supported values: err, warn, notice, info, debug, parser,
                                                                        # header, ext, client, latency, user, count (plus 'none' and 'all')
        #ws_acl = "127.,192.168.0."             # Only allow requests coming from this comma separated list of addresses
}

certificates: {
        cert_pem = "/root/cert/cert.pem"
        cert_key = "/root/cert/key.pem"
        #cert_pwd = "secretpassphrase"
}

修改网页默认支持的wss协议

修改 /opt/janus/share/janus/demos/videoroomtest.js文件
将默认的https协议改为wss

var server = "wss://" + window.location.hostname + ":8989";

端口开放
tcp:8088,8089,8188,8989,3478,80,443
udp:3478,50000-60000

错误问题解决

[ERR] [dtls.c:janus_dtls_srtp_incoming_msg:923] [7071685807055874] Oops, error creating inbound SRTP session for component
先查找libsrtp2.so

ubuntu@VM-0-17-ubuntu:~/webrtc/libsrtp$ sudo locate libsrtp2.so
/home/ubuntu/webrtc/libsrtp/libsrtp2.so
/home/ubuntu/webrtc/libsrtp/libsrtp2.so.1
/usr/lib/libsrtp2.so
/usr/lib/libsrtp2.so.1
/usr/lib/x86_64-linux-gnu/libsrtp2.so
/usr/lib/x86_64-linux-gnu/libsrtp2.so.1

把命令安装的删除

sudo rm -rf /usr/lib/x86_64-linux-gnu/libsrtp2.*
sudo ldconfig

运行 Janus

/opt/janus/bin/janus --debug-level=5 --log-file=$HOME/janus-log