Adding the HostName field to the Conn struct (#18)

Changing the internal-only match interface to return any parsed
hostnames.

It can be useful for implementers of Target to be able to inspect
the already-parsed SNI header (in the case of TLS) or host header
(in the case of http) to know what host was asked for by the client
in order to make additional routing decisions.  This can be used
by transparent reverse proxies where the destination is not known
in advance.

1 files changed, 5 insertions, 4 deletions

diff --git a/http.go b/http.go
index 6197da9..d28c66f 100644
--- a/http.go
+++ b/http.go
@@ -46,11 +46,12 @@ type httpHostMatch struct {
 	target  Target
 }
 
-func (m httpHostMatch) match(br *bufio.Reader) Target {
-	if m.matcher(context.TODO(), httpHostHeader(br)) {
-		return m.target
+func (m httpHostMatch) match(br *bufio.Reader) (Target, string) {
+	hh := httpHostHeader(br)
+	if m.matcher(context.TODO(), hh) {
+		return m.target, hh
 	}
-	return nil
+	return nil, ""
 }
 
 // httpHostHeader returns the HTTP Host header from br without