fix(netxlite/dns): more stricly mirror stdlib error strings (#513)

This diff attempts to modify the errors reported by our custom
resolver by matching more strings from the stdlib.

Part of https://github.com/ooni/probe/issues/1733 and diff has been
extracted from https://github.com/ooni/probe-cli/pull/506.
This commit is contained in:
Simone Basso 2021-09-27 16:48:46 +02:00 committed by GitHub
commit 24b230fd38
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17 changed files with 177 additions and 52 deletions

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@ -27,14 +27,14 @@ type DNSOverHTTPS struct {
// NewDNSOverHTTPS creates a new DNSOverHTTP instance from the
// specified http.Client and URL, as a convenience.
func NewDNSOverHTTPS(client *http.Client, URL string) *DNSOverHTTPS {
func NewDNSOverHTTPS(client HTTPClient, URL string) *DNSOverHTTPS {
return NewDNSOverHTTPSWithHostOverride(client, URL, "")
}
// NewDNSOverHTTPSWithHostOverride is like NewDNSOverHTTPS except that
// it's creating a resolver where we use the specified host.
func NewDNSOverHTTPSWithHostOverride(
client *http.Client, URL, hostOverride string) *DNSOverHTTPS {
client HTTPClient, URL, hostOverride string) *DNSOverHTTPS {
return &DNSOverHTTPS{Client: client, URL: URL, HostOverride: hostOverride}
}