[OpenSIPS-Users] Opensips stops responding to TLS

[L S]

Just wanted to add the traffic between the client and Opensips below. It
seems Opensips keeps on sending RESET.

We have the tcp_max_connections at default value. That value (2048) works
fine in 1.11.5.

Thanks.

client    opensips SSL 142 Client Hello
client    opensips SSL 142 [TCP Retransmission] Client Hello
opensips client    TCP 54 sips > 5071 [RST] Seq=1 Win=0 Len=0
client    opensips SSL 142 [TCP Retransmission] Client Hello
opensips client    TCP 54 sips > 5064 [RST] Seq=1 Win=0 Len=0
client    opensips TCP 74 [TCP Port numbers reused] 5071 > sips [SYN] Seq=0
Win=8192 Len=0 MSS=1460 WS=1
opensips client    TCP 54 sips > 5071 [RST, ACK] Seq=1 Ack=1 Win=0 Len=0
client    opensips TCP 74 [TCP Port numbers reused] 5064 > sips [SYN] Seq=0
Win=8192 Len=0 MSS=1460 WS=1
opensips client    TCP 54 sips > 5064 [RST, ACK] Seq=1 Ack=1 Win=0 Len=0
client    opensips TCP 74 [TCP Port numbers reused] 5080 > sips [SYN] Seq=0
Win=8192 Len=0 MSS=1460 WS=1

On Thu, Dec 29, 2022, 9:27 AM L S <efes99999 at gmail.com> wrote:

> Hi,
>
> We are in the process of migrating from 1.11.5 tls to 3.2.9, and we are
> running into an issue with TLS.
>
> Opensips stops handling TLS within a few minutes after it is started; e.g.
> stops responding to Client Hellos. There is no more outgoing TLS traffic
> from the Opensips server. When we restart Opensips, it goes back to normal
> for a while, then stops responding to TLS requests again.
>
> I don't see any errors in logs.
> The server runs Centos 7,  openssl 1.1.1q.
>
> 1.11.5 works fine.
>
> Can this be a memory issue? We use S_memory 512 and P_memory 8. Opensips
> 1.11.5 works fine with the same settings. TCP parameters have their default
> values.
>
> How can we debug this? Any suggestions would be appreciated.
>
> Thanks,
> Matt
>
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