global
    log /dev/loglocal0
    log /dev/loglocal1 notice
    chroot /var/lib/haproxy
    stats socket /run/haproxy/admin.sock mode 660 level admin
    stats timeout 30s
    user haproxy
    group haproxy
    daemon
    ca-base /etc/ssl/certs
    crt-base /etc/ssl/private
    ssl-default-bind-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
    ssl-default-bind-ciphersuites TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256
    ssl-default-bind-options ssl-min-ver TLSv1.2 no-tls-tickets

defaults
    log global
    modetcp
    option  tcplog
    timeout connect 5000
    timeout client  50000
    timeout server  50000
    errorfile 400 /etc/haproxy/errors/400.http
    errorfile 403 /etc/haproxy/errors/403.http
    errorfile 408 /etc/haproxy/errors/408.http
    errorfile 500 /etc/haproxy/errors/500.http
    errorfile 502 /etc/haproxy/errors/502.http
    errorfile 503 /etc/haproxy/errors/503.http
    errorfile 504 /etc/haproxy/errors/504.http

frontend proxy
    bind *:443
    mode tcp
    option tcplog
    maxconn 10000
    tcp-request inspect-delay 5s
    tcp-request content accept if { req_ssl_hello_type 1 }
    acl Nextcloud req_ssl_sni -i nextcloud.hhf.technology
    acl BigBlueButton req_ssl_sni -i bbb.domain.de.de
    use_backend Nextcloud if Nextcloud
    use_backend BigBlueButton if BigBlueButton

backend Nextcloud
    mode tcp
    fullconn 5000
    balance source
    stick-table type binary len 32 size 1m expire 600m
    acl clienthello req_ssl_hello_type 1
    acl serverhello rep_ssl_hello_type 2
    tcp-request inspect-delay 5s
    tcp-request content accept if clienthello
    tcp-response content accept if serverhello
    stick on payload_lv(43,1) if clienthello
    stick store-response payload_lv(43,1) if serverhello
    option ssl-hello-chk
    server Nextcloud 192.168.2.206:443 check maxconn 5000

backend BigBlueButton
    mode tcp
    fullconn 5000
    balance source
    stick-table type binary len 32 size 1m expire 600m
    acl clienthello req_ssl_hello_type 1
    acl serverhello rep_ssl_hello_type 2
    tcp-request inspect-delay 5s
    tcp-request content accept if clienthello
    tcp-response content accept if serverhello
    stick on payload_lv(43,1) if clienthello
    stick store-response payload_lv(43,1) if serverhello
    option ssl-hello-chk
    server BigBlueButton 192.168.2.234:443 check maxconn 5000