From 0831dbe6f1fbb97d111c413976218387a5f3df02 Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Thu, 13 Aug 2020 15:30:41 +0200
Subject: [PATCH] Handle upstream ERROR messages

---
 upstream.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/upstream.go b/upstream.go
index 9d1252a..07d6266 100644
--- a/upstream.go
+++ b/upstream.go
@@ -1343,6 +1343,12 @@ func (uc *upstreamConn) handleMessage(msg *irc.Message) error {
 		// Ignore
 	case irc.RPL_STATSVLINE, rpl_statsping, irc.RPL_STATSBLINE, irc.RPL_STATSDLINE:
 		// Ignore
+	case "ERROR":
+		var text string
+		if err := parseMessageParams(msg, &text); err != nil {
+			return err
+		}
+		return fmt.Errorf("fatal server error: %v", text)
 	case irc.ERR_PASSWDMISMATCH, irc.ERR_ERRONEUSNICKNAME, irc.ERR_NICKNAMEINUSE, irc.ERR_NICKCOLLISION, irc.ERR_UNAVAILRESOURCE, irc.ERR_NOPERMFORHOST, irc.ERR_YOUREBANNEDCREEP:
 		if !uc.registered {
 			return fmt.Errorf("registration failed: %v", msg.Params[len(msg.Params)-1])