llm_engine-1 | {"message": "failed to connect to livekit, retrying in 10s", "level": "WARNING", "name": "livekit.agents", "exc_info": "Traceback (most recent call last):\n File \"/usr/local/lib/python3.10/site-packages/aiohttp/connector.py\", line 1532, in _create_direct_connection\n hosts = await self._resolve_host(host, port, traces=traces)\n File \"/usr/local/lib/python3.10/site-packages/aiohttp/connector.py\", line 1148, in _resolve_host\n return await asyncio.shield(resolved_host_task)\n File \"/usr/local/lib/python3.10/site-packages/aiohttp/connector.py\", line 1179, in _resolve_host_with_throttle\n addrs = await self._resolver.resolve(host, port, family=self._family)\n File \"/usr/local/lib/python3.10/site-packages/aiohttp/resolver.py\", line 40, in resolve\n infos = await self._loop.getaddrinfo(\n File \"/usr/local/lib/python3.10/asyncio/base_events.py\", line 863, in getaddrinfo\n return await self.run_in_executor(\n File \"/usr/local/lib/python3.10/concurrent/futures/thread.py\", line 58, in run\n result = self.fn(*self.args, **self.kwargs)\n File \"/usr/local/lib/python3.10/socket.py\", line 967, in getaddrinfo\n for res in _socket.getaddrinfo(host, port, family, type, proto, flags)\nsocket.gaierror [Errno -3] Temporary failure in name resolution\n\nThe above exception was the direct cause of the following exception:\n\nTraceback (most recent call last):\n File \"/usr/local/lib/python3.10/site-packages/livekit/agents/worker.py\", line 618, in _connection_task\n ws = await self._http_session.ws_connect(agent_url, headers=headers, what is with the error

Thanks for reaching out, Anigilaje. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.

this the url i am using : LIVEKIT_URL="wss://dpi-kccd98ec.livekit.cloud"

Thanks — that URL is what I needed. I’ll help you narrow this down. Please run these checks from the machine running the agent and paste the results: 1. DNS resolution •

nslookup dpi-kccd98ec.livekit.cloud

•

dig dpi-kccd98ec.livekit.cloud +short

1. Quick connectivity checks •

ping dpi-kccd98ec.livekit.cloud

(if allowed) •

curl -v <https://dpi-kccd98ec.livekit.cloud/>

(this may return an error but shows DNS/HTTP reachability) 1. Verify general DNS •

nslookup <http://google.com|google.com>

Also tell me if this host is behind an enterprise proxy/firewall (Zscaler or similar). If it is, mention whether DNS or HTTPS inspection is enabled. Send the command outputs and I’ll interpret them and recommend the next steps.

root@fmcide-ncair-publica-01:/var/www/html/exam-prep/ai_engine# nslookup dpi-kccd98ec.livekit.cloud Server: 127.0.0.53 Address: 127.0.0.53#53 Non-authoritative answer: Name: dpi-kccd98ec.livekit.cloud Address: 158.101.233.226 Name: dpi-kccd98ec.livekit.cloud Address: 79.72.12.128 root@fmcide-ncair-publica-01:/var/www/html/exam-prep/ai_engine#

Thanks — the

nslookup

shows the hostname resolves to two IPs (158.101.233.226 and 79.72.12.128), so DNS resolution is working from this host. That confirms the original error isn’t a persistent DNS failure here. Next checks to isolate the issue — please run these from the same machine and paste the outputs: 1. Connectivity to the resolved IPs •

ping -c 4 158.101.233.226

•

ping -c 4 79.72.12.128

1. Test TCP/WebSocket reachability (port 443) •

curl -v <https://dpi-kccd98ec.livekit.cloud/>

•

nc -vz 158.101.233.226 443

(or

telnet 158.101.233.226 443

) •

nc -vz 79.72.12.128 443

(or

telnet 79.72.12.128 443

) 1. Check general DNS and HTTPS behavior •

nslookup <http://google.com|google.com>

•

curl -v <https://www.google.com/>

1. Tell me whether this host is behind an enterprise proxy/firewall (Zscaler or similar) and whether DNS/HTTPS inspection is enabled. If the pings succeed but TCP/WebSocket (port 443) tests fail, the likely cause is a proxy/firewall or deep packet inspection blocking WebSocket/TLS. If TCP works but the agent still fails, paste the

curl -v

output and the agent logs and I’ll help interpret them.

root@fmcide-ncair-publica-01:/var/www/html/exam-prep/ai_engine# ping -c 4 158.101.233.226 PING 158.101.233.226 (158.101.233.226) 56(84) bytes of data. --- 158.101.233.226 ping statistics --- 4 packets transmitted, 0 received, 100% packet loss, time 3077ms root@fmcide-ncair-publica-01:/var/www/html/exam-prep/ai_engine# * Trying 158.101.233.226:443... * Connected to dpi-kccd98ec.livekit.cloud (158.101.233.226) port 443 * ALPN: curl offers h2,http/1.1 * TLSv1.3 (OUT), TLS handshake, Client hello (1): * CAfile: /etc/ssl/certs/ca-certificates.crt * CApath: /etc/ssl/certs * TLSv1.3 (IN), TLS handshake, Server hello (2): * TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8): * TLSv1.3 (IN), TLS handshake, Certificate (11): * TLSv1.3 (IN), TLS handshake, CERT verify (15): * TLSv1.3 (IN), TLS handshake, Finished (20): * TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1): * TLSv1.3 (OUT), TLS handshake, Finished (20): * SSL connection using TLSv1.3 / TLS_AES_128_GCM_SHA256 / X25519 / RSASSA-PSS * ALPN: server accepted h2 * Server certificate: * subject: CN=*.livekit.cloud * start date: Nov 30 000000 2025 GMT * expire date: Feb 28 235959 2026 GMT * subjectAltName: host "dpi-kccd98ec.livekit.cloud" matched cert's "*.livekit.cloud" * issuer: C=AT; O=ZeroSSL; CN=ZeroSSL RSA Domain Secure Site CA * SSL certificate verify ok. * Certificate level 0: Public key type RSA (2048/112 Bits/secBits), signed using sha384WithRSAEncryption * Certificate level 1: Public key type RSA (4096/152 Bits/secBits), signed using sha384WithRSAEncryption * Certificate level 2: Public key type RSA (4096/152 Bits/secBits), signed using sha384WithRSAEncryption * TLSv1.3 (IN), TLS handshake, Newsession Ticket (4): * using HTTP/2 * [HTTP/2] [1] OPENED stream for https://dpi-kccd98ec.livekit.cloud/ * [HTTP/2] [1] [method GET] * [HTTP/2] [1] [scheme https] * [HTTP/2] [1] [authority dpi-kccd98ec.livekit.cloud] * [HTTP/2] [1] [path /] * [HTTP/2] [1] [user-agent: curl/8.5.0] * [HTTP/2] [1] [accept: /]

GET / HTTP/2

Host: dpi-kccd98ec.livekit.cloud

User-Agent: curl/8.5.0

Accept: /

< HTTP/2 200 < content-type: text/plain; charset=utf-8 < date: Mon, 29 Dec 2025 100700 GMT < vary: Origin < content-length: 2 < * Connection #0 to host dpi-kccd98ec.livekit.cloud left intact OKroot@fmcide-ncair-publica-01:/var/www/html/exam-prep/ai_engine#

Thanks — you ran the checks I asked for. I’m responding to the ping/curl results you posted. What I see: • DNS resolves to two IPs (158.101.233.226, 79.72.12.128). • Ping to 158.101.233.226 shows 100% ICMP packet loss (ICMP may be blocked). • TLS/HTTP to dpi-kccd98ec.livekit.cloud on port 443 succeeds and returns "OK". TLS certificate matches. What this means: • DNS and TLS/HTTP reachability are working from this host. • ICMP loss is not decisive — many servers block ping. • The original error was a DNS resolution failure at runtime, but your host currently resolves and connects fine. The remaining likely causes are intermittent DNS issues in the environment, or interference from a proxy/firewall that affects the agent process (especially WebSocket connections) even when HTTPS works. Next targeted checks (please run and paste outputs): 1. Test WebSocket handshake to the LiveKit WebSocket endpoint: • Install and run wscat or websocat: ◦ wscat:

wscat -c "<wss://dpi-kccd98ec.livekit.cloud:443>"

◦ websocat:

websocat "<wss://dpi-kccd98ec.livekit.cloud:443>"

Expect a successful handshake or specific error. 1. Test TCP connect to the other resolved IP: •

nc -vz 79.72.12.128 443

1. Reproduce the agent error with increased logging and paste the agent log around the failure (the traceback you shared). Specifically, capture the first lines where it attempts DNS resolution and the timestamp. 2. Confirm proxy/firewall details: • Is this host behind an enterprise proxy (Zscaler or similar)? If yes, is HTTPS inspection enabled? • Are there environment variables like

HTTP_PROXY

,

HTTPS_PROXY

, or system-wide proxy settings set for the agent process? What I can do next after those outputs: • If the WebSocket handshake fails, I’ll interpret the error and suggest fixes (proxy bypass, TLS inspection rules, or alternate TURN settings). • If websockets succeed locally, we’ll look for intermittent DNS resolution or race conditions in the agent startup. If you prefer, paste the output of

env | grep -i proxy

and the agent log snippet where it starts and then fails. I’ll analyze and recommend the exact fix.

how do i chek my .env to see if the .env is correct

I’m responding to your question about checking your

.env

to make sure it’s correct. Here are concise steps to view and validate it, plus what to check for LiveKit connectivity. 1. Open the file • Run:

cat .env

or

less .env

(from the app directory) 1. Verify formatting • Each line should be KEY=VALUE (no spaces around

=

). • Quoted values are fine:

LIVEKIT_URL="<wss://dpi-kccd98ec.livekit.cloud>"

• No stray characters or Windows CRLFs. To check CRLF:

file .env

or

sed -n '1p' .env | od -c | head

1. Important keys to check for your issue •

LIVEKIT_URL

— should be your wss URL (example above). •

API_KEY

/

API_SECRET

(if used) — not shown in logs. • Proxy vars:

HTTP_PROXY

,

HTTPS_PROXY

,

NO_PROXY

(or lowercase). Run:

env | grep -i proxy

• Any custom DNS settings or network vars your app reads. 1. Confirm the app is using the

.env

• If you use a process manager (systemd, docker, pm2), env files may not be auto-loaded. Show current environment for the running process: ◦ For Docker: check

docker run

or

docker-compose

env section or

docker exec -it <container> printenv | grep -i LIVEKIT

◦ For systemd:

systemctl show-environment

or check service unit for

EnvironmentFile=

◦ For a local process:

ps aux | grep <your_process>

then

cat /proc/<PID>/environ | tr '\0' '\n' | grep -i livekit

• Or add a quick debug log in your app to print

LIVEKIT_URL

(mask secrets). 1. If you want me to check the values • Paste the

LIVEKIT_URL

line and the output of

env | grep -i proxy

(mask secrets). I’ll confirm formatting and whether proxy settings could affect LiveKit. If you tell me how you run the agent (Docker, systemd, plain process), I can give exact commands to confirm the env is being loaded.