Ok I got it, Let me explain in brief,

So, I was having 2 proxy servers,

                1. Proxy-kam-01(kamailio-5.4.7)
                2. Proxy-kam-02(kamailio-5.4.7)

Now i have upgraded the Proxy-kam-02(5.5.5), now the phrase will be

                 1. Proxy-kam-01(kamailio-5.4.7)
                 2. Proxy-kam-02(kamailio-5.5.5)


hereafter upgradation of one of the proxy we are facing the memory issue
like I have shared the errors to you in previous mail.

On Thu, Apr 6, 2023 at 2:13 PM Henning Westerholt <h...@gilawa.com> wrote:

> Hello,
>
>
>
> not sure if I understand it correctly. But in case of DMQ, you need to
> have both proxies at least on the same major version (5.5.x), replication
> will not work from 5.4.x to 5.5.x for example. So you need to update both
> proxies the same time.
>
>
>
> Cheers,
>
>
>
> Henning
>
>
>
> --
>
> Henning Westerholt – https://skalatan.de/blog/
>
> Kamailio services – https://gilawa.com
>
>
>
> *From:* satyaprakash ch <chiramchetty.satyaprak...@gmail.com>
> *Sent:* Donnerstag, 6. April 2023 09:39
> *To:* Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
> *Subject:* [SR-Users] Re: issue in kamailio of udp
>
>
>
> Here I need to mention is,
>
> I was maintaining the 2 proxies with Kamailio version 5.4.7, Then I have
> only upgraded a single proxy to 5.5.5,
> Is there any compatibility for the version change of a single proxy server
> that makes the issue? Because the 2 proxy servers are maintained with DMQ,
>
> Awaiting any reply for this..!
>
>
>
> On Wed, Apr 5, 2023 at 11:23 PM satyaprakash ch <
> chiramchetty.satyaprak...@gmail.com> wrote:
>
> Hi,
>
> I had upgraded Kamailio from 5.4.7 to 5.5.5, Then I restarted the Kamailio
> service.
>
> After upgradation im getting the below error,
>
> /usr/local/sbin/kamailio[21754]: ERROR: <core> [core/udp_server.c:596]:
> udp_send(): sendto(sock, buf: 0x7f7502289200, len: 61012, 0, dst: (
> 10.122.45.189:5080), tolen: 16) - err: No buffer space available (105)
>  /usr/local/sbin/kamailio[21754]: ERROR: tm [../../core/forward.h:231]:
> msg_send_buffer(): udp_send failed
> /usr/local/sbin/kamailio[21754]: ERROR: tm [uac.c:678]:
> send_prepared_request_impl(): Attempt to send to precreated request failed
>
> ERROR: tm [../../core/forward.h:231]: msg_send_buffer(): udp_send failed
>
> ERROR: tm [uac.c:678]: send_prepared_request_impl(): Attempt to send to
> precreated request failed
>
>
>
> Anyone have any idea on this errors.
>
>
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