Is custom name resolution implemented?

[Allgot]

Hello!

I've searching through to find how to specify the destination IP without any issues related to SSL, and finally found an idea thread of @toppk , written an year ago.

So, my question is, was there any advance? Can I specify which IP address to connect, along with the hostname?

I've already tried to override Python socket package's resolution method as in Requests API, but it seems not to work properly with SOCKS5 proxy.

About this, I suspect that since SOCKS5 implementations in HTTPX are actually SOCKS5h which the domain name is resolved at the remote(i.e. using SOCKS server), it does not call Python's getaddrinfo as the above stackoverflow article.

Therefore, specifying an IP address with a hostname together is the best way in this case.
Of course, I can do this in a dirty way: modify the default transport's handle_request method and httpcore's HTTP2Connection so the :authority header and hostname become what I want. But still it is not clear and extremely error-prone.

Could I provide both of an IP address and a hostname, in a clearer way?

Thanks, in advance!

[tomchristie]

Apologies for the slow reply...

Could I provide both of an IP address and a hostname, in a clearer way?

So... I think there's an improvement that we could make here.

Can you send a request to a specific IP, well yes...

>>> httpx.get("http://142.250.200.36:80/", headers={"Host": "www.google.com"})
<Response [200 OK]>

But this won't work for SSL requests...

>>> httpx.get("https://142.250.200.36:443/", headers={"Host": "www.google.com"})
...
httpx.ConnectError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate (_ssl.c:997)

This fails because it is attempting to sign the SSL cert with '142.250.200.36'.

We could change this behaviour in httpcore, so that for SSL connections, the SSL server_hostname is derived from the Host header rather than from the URL.

[karpetrosyan]

Hello, @Allgot , Thank you for your suggestion, but for the sake of simplicity, can we decide it in another discussion?

[Allgot]

@karosis88

Of course! Then, could you let me know what should I do for that?

[karpetrosyan]

Simply start a discussion and describe the change you want to see.

This discussion appears to have been consumed because it has discussed another change that we have already implemented, so I believe it would be better to open a new discussion separate from this one.

[Allgot]

Alright!

Let me open a new discussion now.

[Allgot]

Please refer to #2811 :)