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plugin/forward: Add http(2) host/authority header and TO server resolution (#8233)

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llucas
2026-07-22 19:07:09 -07:00
committed by GitHub
parent 56f7c09311
commit 73d1eacf87
9 changed files with 83 additions and 32 deletions
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21
plugin/forward/resolve.go
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@@ -16,8 +16,8 @@ import (
// hostEntry represents a hostname-based TO address that needs DNS resolution.
type hostEntry struct {
hostname string // the hostname to resolve (e.g., "rbldnsd.rbldnsd.svc.cluster.local")
port string // port (e.g., "53", "853")
transport string // "dns" or "tls"
port string // port (e.g., "53", "443", "853")
transport string // "dns", "tls", or "https"
zone string // TLS server name zone (from %zone syntax)
}
@@ -67,15 +67,18 @@ func parseAsHostEntry(h string) (hostEntry, bool) {
cleanH, zone := splitZone(h)
trans, host := parse.Transport(cleanH)
// Only dns and tls transports are supported for hostname resolution
if trans != transport.DNS && trans != transport.TLS {
// Only dns, tls, and https transports are supported for hostname resolution
if trans != transport.DNS && trans != transport.TLS && trans != transport.HTTPS {
return hostEntry{}, false
}
hostname := host
port := transport.Port
if trans == transport.TLS {
switch trans {
case transport.TLS:
port = transport.TLSPort
case transport.HTTPS:
port = transport.HTTPSPort
}
// Check if there's a port
@@ -161,14 +164,14 @@ func formatResolvedAddr(ip, port, trans, zone string) string {
isIPv6 := strings.Contains(ip, ":")
switch trans {
case transport.TLS:
case transport.TLS, transport.HTTPS:
if zone != "" {
if isIPv6 {
return transport.TLS + "://[" + ip + "%" + zone + "]:" + port
return trans + "://[" + ip + "%" + zone + "]:" + port
}
return transport.TLS + "://" + ip + "%" + zone + ":" + port
return trans + "://" + ip + "%" + zone + ":" + port
}
return transport.TLS + "://" + net.JoinHostPort(ip, port)
return trans + "://" + net.JoinHostPort(ip, port)
default: // transport.DNS
return net.JoinHostPort(ip, port)
}