Re: PJSIP Client sending request on same connection

[Naveen Shivanna <naveen.shivanna@xxxxxxxxx>]

Hi Kjeld,

 

 

We are using GCP Internal TCP load balancer.

 

For SIP Client we are using PJSIP.

 

Regards

Naveen.S

From: pjsip <pjsip-bounces@xxxxxxxxxxxxxxx> On Behalf Of Kjeld Flarup
Sent: Wednesday, May 13, 2020 2:08 PM
To: pjsip list <pjsip@xxxxxxxxxxxxxxx>
Subject: Re: [pjsip] PJSIP Client sending request on same connection

 

Hi Naveen

 

What load balancer are You using?

I would suggest using Kamailio, it is designed to do SIP load balancing.

 

  Kjeld

 

Den ons. 13. maj 2020 kl. 08.13 skrev Naveen Shivanna <naveen.shivanna@xxxxxxxxx>:

Hi All,

 

Could anyone reply to my query below.

 

Regards

Naveen.S

 

From: pjsip <pjsip-bounces@xxxxxxxxxxxxxxx> On Behalf Of Naveen Shivanna
Sent: Friday, December 20, 2019 6:35 PM
To: pjsip@xxxxxxxxxxxxxxx
Subject: [pjsip] PJSIP Client sending request on same connection

 

Hi All,

 

Hoping for a solution. Your help will be appreciated.

 

Problem

 

PJsip client sends SIP requests on the same TCP connection

 

Setup details 

 

I have pjsip client service which sends request to SIP servers on Google Cloud Platform (GCP) installed on same VPC.

In between these 2 components we are introducing "Internal TCP load balancer". Basically we wanted to load balance the TCP traffic(SIP Messages) from pjsip client to different SIP Servers sitting behind the load balancer as depicted in the diagram below.

 

 

Observation

 

Since the pjsip have single transport created and hence the request goes on the same connection to Load Balancer ip-address. Load balancer balances the traffic based on the rule “Client IP, Src port and protocol”.. Since any request coming from PBX1 pjsip client will always be having same ip-address and the connection is also same.. all the requests for going to one SIP Server. Because of this we are not able to load balance the traffic to other SIP Servers

 

Could any one suggest me how I can create different connections for each SIP session created by same PBX pjsip client (PBX1).

 

Regards

Naveen.S

 

 

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