[SR-Users] loose_route ACK and BYE

[Daniel-Constantin Mierla]

Hello,

can you paste the output of ngrep for the ACK and BYE? Maybe one of it
has Route headers that get to $du and then have to be overwritten. $du
is used for routing if set, if not $ru.

Cheers,
Daniel


On 03/02/2017 13:33, Ben Hood wrote:
> Hi,
>
> I've fixed a loose_route problem with a broken gateway.
>
> Essentially gateway sends ACKs and BYEs with an unroutable contact
> header (i.e. it sticks the address of the proxy into the header,
> rather than the destination UA address).
>
> This is all on the same network, so there is not NAT.
>
> So by caching the contact URI to for replies back to the gateway, I
> can populate $ru to forward the ACK or BYE back to the correct UA.
>
> However, what I've noticed is that for BYEs, I also need to set the
> $du variable in addition to $ru. But this is required for ACKs.
>
> This is not a problem per se, but I'm interesting to know why - could
> anybody explain?
>
> Cheers,
>
> Ben
>
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Daniel-Constantin Mierla
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