tokers commented on a change in pull request #4391:
URL: https://github.com/apache/apisix/pull/4391#discussion_r648207010
##########
File path: apisix/stream/plugins/mqtt-proxy.lua
##########
@@ -159,16 +165,38 @@ function _M.preread(conf, ctx)
core.log.info("mqtt client id: ", res.client_id)
+ local host = conf.upstream.host
+ if not host then
+ host = conf.upstream.ip
+ end
+
+ if conf.host_is_domain == nil then
+ conf.host_is_domain = not ipmatcher.parse_ipv4(host)
+ and not ipmatcher.parse_ipv6(host)
+ end
+
+ if conf.host_is_domain then
+ local ip, err = core.resolver.parse_domain(host)
+ if not ip then
+ core.log.error("failed to parse host ", host, ", err: ", err)
+ return 500
Review comment:
OK, got it.
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