From a958a0144691a7818b16c1512890e737ab424c98 Mon Sep 17 00:00:00 2001
From: delthas <delthas@dille.cc>
Date: Sun, 22 Mar 2020 00:44:55 +0100
Subject: [PATCH] Add user hostname to downstream user prefix

---
 downstream.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/downstream.go b/downstream.go
index dcf0c4e..c7da91e 100644
--- a/downstream.go
+++ b/downstream.go
@@ -71,6 +71,7 @@ type downstreamConn struct {
 	username    string
 	rawUsername string
 	realname    string
+	hostname    string
 	password    string   // empty after authentication
 	network     *network // can be nil
 
@@ -96,6 +97,10 @@ func newDownstreamConn(srv *Server, netConn net.Conn) *downstreamConn {
 		caps:         make(map[string]bool),
 		ourMessages:  make(map[*irc.Message]struct{}),
 	}
+	dc.hostname = netConn.RemoteAddr().String()
+	if host, _, err := net.SplitHostPort(dc.hostname); err == nil {
+		dc.hostname = host
+	}
 
 	go func() {
 		if err := dc.writeMessages(); err != nil {
@@ -116,7 +121,7 @@ func (dc *downstreamConn) prefix() *irc.Prefix {
 	return &irc.Prefix{
 		Name: dc.nick,
 		User: dc.username,
-		// TODO: fill the host?
+		Host: dc.hostname,
 	}
 }