Hello,
i’m in trouble… i’m trying to enable reverse proxy with Caddy on my HA Core on Docker and i’m able to connect in remote to my HA but after a small time period it disconnect 
I’ve followed this installation:
Here my configuration:
CONFIGURATION.YAML
# Setting for Reverse Proxy configuration
http:
use_x_forwarded_for: true
trusted_proxies:
- 172.18.0.3
CADDYFILE
(https_header) {
header {
Strict-Transport-Security "max-age=31536000; includeSubdomains"
X-XSS-Protection "1; mode=block"
X-Content-Type-Options "nosniff"
X-Frame-Options "SAMEORIGIN"
Referrer-Policy "same-origin"
}
}
https://mysite.duckdns.org {
respond "All working fine"
file_server
}
https://mysite.duckdns.org:9000 {
import https_header
reverse_proxy http://192.168.1.10:8123
}
DOCKER-COMPOSE.YAML
caddy:
container_name: caddy
image: caddy:latest
volumes:
- "/home/daniele/caddy/Caddyfile:/etc/caddy/Caddyfile"
- "/home/daniele/caddy/data:/data"
environment:
- "TZ=Europe/Rome"
restart: always
ports:
- "80:80"
- "443:443"
- "9000:9000"
Here also the log of CADDY with an error that i don’t understand
{"level":"info","ts":1679191238.6523993,"msg":"using provided configuration","config_file":"/etc/caddy/Caddyfile","config_adapter":"caddyfile"}
{"level":"warn","ts":1679191238.6537223,"msg":"Caddyfile input is not formatted; run the 'caddy fmt' command to fix inconsistencies","adapter":"caddyfile","file":"/etc/caddy/Caddyfile","line":2}
{"level":"info","ts":1679191238.6551166,"logger":"admin","msg":"admin endpoint started","address":"localhost:2019","enforce_origin":false,"origins":["//localhost:2019","//[::1]:2019","//127.0.0.1:2019"]}
{"level":"info","ts":1679191238.6566072,"logger":"http","msg":"server is listening only on the HTTPS port but has no TLS connection policies; adding one to enable TLS","server_name":"srv0","https_port":443}
{"level":"info","ts":1679191238.65667,"logger":"http","msg":"enabling automatic HTTP->HTTPS redirects","server_name":"srv0"}
{"level":"info","ts":1679191238.6566916,"logger":"http","msg":"enabling automatic HTTP->HTTPS redirects","server_name":"srv1"}
{"level":"info","ts":1679191238.6570609,"logger":"tls.cache.maintenance","msg":"started background certificate maintenance","cache":"0xc000526150"}
{"level":"info","ts":1679191238.6576052,"logger":"tls","msg":"cleaning storage unit","description":"FileStorage:/data/caddy"}
{"level":"info","ts":1679191238.6576865,"logger":"http","msg":"enabling HTTP/3 listener","addr":":443"}
{"level":"info","ts":1679191238.6577852,"msg":"failed to sufficiently increase receive buffer size (was: 208 kiB, wanted: 2048 kiB, got: 416 kiB). See https://github.com/quic-go/quic-go/wiki/UDP-Receive-Buffer-Size for details."}
{"level":"info","ts":1679191238.6578808,"logger":"http.log","msg":"server running","name":"srv0","protocols":["h1","h2","h3"]}
{"level":"info","ts":1679191238.6580448,"logger":"http","msg":"enabling HTTP/3 listener","addr":":9000"}
{"level":"info","ts":1679191238.6581483,"logger":"http.log","msg":"server running","name":"srv1","protocols":["h1","h2","h3"]}
{"level":"info","ts":1679191238.6582692,"logger":"http.log","msg":"server running","name":"remaining_auto_https_redirects","protocols":["h1","h2","h3"]}
{"level":"info","ts":1679191238.6583283,"logger":"http","msg":"enabling automatic TLS certificate management","domains":["mysite.duckdns.org"]}
{"level":"info","ts":1679191238.6583333,"logger":"tls","msg":"finished cleaning storage units"}
{"level":"info","ts":1679191238.6594727,"msg":"autosaved config (load with --resume flag)","file":"/config/caddy/autosave.json"}
{"level":"info","ts":1679191238.659508,"msg":"serving initial configuration"}
{"level":"error","ts":1679191971.459085,"logger":"http.log.error","msg":"readfrom tcp 172.18.0.3:51102->192.168.1.10:8123: client disconnected","request":{"remote_ip":"37.159.6.110","remote_port":"37789","proto":"HTTP/2.0","method":"POST","host":"mysite.duckdns.org:9000","uri":"/api/webhook/551b09ba90600dc7403e3584654e8018e06f010c2dda6f67b7465aba3815f92a","headers":{"Accept":["*/*"],"Content-Type":["application/json"],"Accept-Language":["it-IT,it;q=0.9"],"Accept-Encoding":["gzip, deflate, br"],"User-Agent":["Home Assistant/2023.2 (io.robbie.HomeAssistant; build:2023.444; iOS 16.3.1)"],"Content-Length":["376"],"Cache-Control":["no-cache"]},"tls":{"resumed":false,"version":772,"cipher_suite":4865,"proto":"h2","server_name":"mysite.duckdns.org"}},"duration":0.001263423,"status":502,"err_id":"kpdyup2jd","err_trace":"reverseproxy.statusError (reverseproxy.go:1299)"}
Please help me to understand the problem i’m spending a lot of hours trying to understand it without any results