Hi Rahul,

That define is used to calculate the the max VIA len when OpenSIPS is generating its own VIA headers. That max len does not impact the VIA headers which were received.

I do not understand exactly (in your example) what's the flow of that VIA header. If you want, send me off-list the pcap/ngrep showing the SIP package (before and after OpenSIPS) and how it is affected.

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com

On 05.07.2016 20:57, Gupta, Rahul wrote:
We are using opensips 1.11.5 as a stateless proxy and seeing a truncated Branch in Via for my REGISTER message. After some code digging, the MAX length is calculated using the following formula and seems like its truncating the branch after 55 characters. This is causing the REGISTER to fail in our case. Is there a config level solution to this ? *#define MAX_BRANCH_PARAM_LEN (MCOOKIE_LEN+8 /*!<int2hex*/ + 1 /*sep*/ + \* * MD5_LEN + 1 /*!<sep*/ + 8 /*int2hex*/ + \* * 1 /*extra space, needed by t_calc_branch*/)* truncated from opensips à Via: SIP/2.0/UDP XX.XX.XX.XX:5060;branch=z9hG4bK0fddbbc9-1487-4755-a0b3-0c319155b8c3_0efbfc5e_11160 Via from EndPoint à Via: SIP/2.0/UDP XX.XX.XX.XX:5060;branch=z9hG4bK0fddbbc9-1487-4755-a0b3-0c319155b8c3_0efbfc5e_1116078308924346_MTAuMTIuMy4xMQ
*Thanks*
*Rahul Gupta*
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