Re: [mosquitto-dev] IPv6 + TLS support?

[Aaron Tunney <Aaron.Tunney@xxxxxxxx>]

Thanks for the reply Roger. I think we’ll give changing it to PF_UNSPEC a go and I’ll let you know if we come across any problems.

Thanks,

Aaron


 Aaron Tunney
	
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On 16/05/2016, 17:32, "mosquitto-dev-bounces@xxxxxxxxxxx on behalf of Roger Light" <mosquitto-dev-bounces@xxxxxxxxxxx on behalf of roger@xxxxxxxxxx> wrote:

>Hi Aaron,
>
>I believe that this was a historical requirement that came from
>openssl, but I'm not entirely sure. It does seem to work but I'm
>slightly cautious to say just go ahead. I think I need to add a load
>of ipv6 related tests.
>
>Cheers,
>
>Roger
>
>
>On Mon, May 16, 2016 at 11:10 AM, Aaron Tunney <Aaron.Tunney@xxxxxxxx> wrote:
>> Hi,
>>
>> Does the Mosquitto library support IPv6 + TLS? From reading the code, it
>> looks like the library is hard-coded to use IPv4 when WITH_TLS is defined.
>>
>> See _mosquitto_try_connect in net_mosq.c:
>>
>> memset(&hints, 0, sizeof(struct addrinfo));
>>
>> #ifdef WITH_TLS
>>
>> if(mosq->tls_cafile || mosq->tls_capath || mosq->tls_psk){
>>
>> hints.ai_family = PF_INET;
>>
>> }else
>>
>> #endif
>>
>> {
>>
>> hints.ai_family = PF_UNSPEC;
>>
>> }
>>
>>
>> We are writing an iOS app that talks to an IoT device over MQTT. When our
>> app is connected to an NAT64-based network, it is unable to connect to our
>> device over the Internet. The app connects fine if we set hints.aifamily to
>> PFINET6 or PF_UNSPEC though.
>>
>> Is IPv4-only support intentional? Would we run into side effects if we
>> permanently set hints.aifamily to PF_UNSPEC?
>>
>> Thanks!
>>
>> Aaron
>>
>>
>> Aaron Tunney
>> Senior Software Engineer (iOS)
>>
>> Direct: +44 207 780 4776
>>
>> aaron.tunney@xxxxxxxx   |   http://www.akqa.com
>>
>> AKQA, 1 St John's Lane, London EC1M 4BL, UK
>> Registered in England: 2964394
>>
>> Confidentiality notice:
>> The information transmitted in this email and/or any attached document(s) is
>> confidential and intended only for the person or entity to which it is
>> addressed and may contain privileged material. Any review, retransmission,
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>> prohibited. If you received this in error, please contact the sender and
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