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DNS error rcode type #785
Description
The DNS-error-payload type is currently defined as this:
/// Defines the case payload type for `DNS-error` above:
@since(version = 0.2.0)
record DNS-error-payload {
rcode: option<string>,
info-code: option<u16>
}This has the rcode value be a string. However, DNS rcodes have standardized values that are defined in terms of u16 values.
With the current type being string, implementations appear to be using ad-hoc error messages which don't correspond to any standardized rcode value.
Activity
pchickey commentedon Sep 9, 2025
Also worth considering in wasi-sockets, which makes an ad-hoc mapping: https://github.com/WebAssembly/wasi-sockets/blob/main/wit/ip-name-lookup.wit#L42-L47
Make `DNS-error-payload` just contain a string.
Make `DNS-error-payload` just contain a string.
sunfishcode commentedon Oct 17, 2025
Thinking about this more, I think having the precise
u16value isn't crucial, and at the same time, isn't easy for common implementations to provide. However in that case, theu16info-code field is also not crucial, and also not easy for those same implementations. So I've now filed WebAssembly/wasi-http#204 to propose just having a simple string.lann commentedon Oct 20, 2025
This kind of detail seems like it might fit better in a more focused
wasi:dnsinterface, which seems like a perfectly sensible thing to have anyway for anything that goes beyondgetaddrinfo.