Hostname/IP validation is too strict

[RaphiMC]

If I want to use raphimc.net_25564_1.8.x.viaproxy.127-0-0-1.nip.io:25568 as a hostname for my backend server in the velocity config it complains that the address is not valid. Pinging raphimc.net_25564_1.8.x.viaproxy.127-0-0-1.nip.io in cmd resolves to localhost as it should. The reason I want to use such a long hostname is to pass on information (Through the address in the handshake packet) to the "backend server" (Another proxy) to know where to connect to. Trying to connect to that address with a minecraft client works fine.

[RaphiMC]

Bungeecord has the same issue: SpigotMC/BungeeCord#3480

[electronicboy]

I mean, you're breaking the hostname spec, I guess we probably should relax this a little, but, idk what extra chars we allow people to break the spec with

[RaphiMC]

Which of the characters breaks the hostname spec?

[electronicboy]

_

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On Wed, 28 Jun 2023, 08:54 RK_01, ***@***.***> wrote: Which of the characters breaks the hostname spec? — Reply to this email directly, view it on GitHub <#1031 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAJMAZGDIA64DQEP4UZQMODXNPPKTANCNFSM6AAAAAAZWSGC24> . You are receiving this because you commented.Message ID: ***@***.***>

[RaphiMC]

Just tried, even browsers accept _ in the URLs. So I think it should be relaxed even tho its not strictly per spec

[electronicboy]

Yes, that's what I'm saying, I just have no idea what extra characters we allow

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On Wed, 28 Jun 2023, 09:05 RK_01, ***@***.***> wrote: Just tried, even browsers accept _ in the URLs. So I think it should be relaxed even tho its not strictly per spec — Reply to this email directly, view it on GitHub <#1031 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAJMAZDOCLLKH5XOTGXWW3DXNPQVJANCNFSM6AAAAAAZWSGC24> . You are receiving this because you commented.Message ID: ***@***.***>