From 7745e1f718c9cdce0055eb6dbd7c641ca32dd55b Mon Sep 17 00:00:00 2001
From: vduduh <vladimir@duduh.ru>
Date: Thu, 27 Feb 2020 23:18:50 +0300
Subject: [PATCH] Add Server-To-Client handler

https://xmpp.org/extensions/xep-0199.html#s2c
---
 client.go | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/client.go b/client.go
index bd40c38..48f19ae 100644
--- a/client.go
+++ b/client.go
@@ -309,6 +309,19 @@ func (c *Client) recv(state SMState, keepaliveQuit chan<- struct{}) {
 
 		// Handle stream errors
 		switch packet := val.(type) {
+		case *stanza.IQ:
+			if val.(*stanza.IQ).Any != nil && val.(*stanza.IQ).Any.XMLName.Local == "ping" {
+				err = c.Send(&stanza.IQ{Attrs: stanza.Attrs{
+					Id:   val.(*stanza.IQ).Id,
+					Type: stanza.IQTypeResult,
+					From: val.(*stanza.IQ).To,
+					To:   val.(*stanza.IQ).From,
+				}})
+				if err != nil {
+					c.ErrorHandler(err)
+				}
+				continue
+			}
 		case stanza.StreamError:
 			c.router.route(c, val)
 			close(keepaliveQuit)