Fix SRV hostname validation fails

aclark4life · aclark4life · commit c767cd4f1b21 · 2025-04-09T12:33:54.000-04:00
diff --git a/pymongo/asynchronous/srv_resolver.py b/pymongo/asynchronous/srv_resolver.py
@@ -137,7 +137,7 @@ async def _get_srv_response_and_hosts(
 
         # Validate hosts
         for node in nodes:
-            if self.__fqdn == node[0].lower():
+            if self.__fqdn == node[0].lower() and len(node[0].split(".")) < 3:
                 raise ConfigurationError(
                     "Invalid SRV host: return address is identical to SRV hostname"
                 )
diff --git a/pymongo/synchronous/srv_resolver.py b/pymongo/synchronous/srv_resolver.py
@@ -137,7 +137,7 @@ def _get_srv_response_and_hosts(
 
         # Validate hosts
         for node in nodes:
-            if self.__fqdn == node[0].lower():
+            if self.__fqdn == node[0].lower() and len(node[0].split(".")) < 3:
                 raise ConfigurationError(
                     "Invalid SRV host: return address is identical to SRV hostname"
                 )

Original file line number	Diff line number	Diff line change
`@@ -137,7 +137,7 @@ async def _get_srv_response_and_hosts(`
`137`	`137`
`138`	`138`	`# Validate hosts`
`139`	`139`	`for node in nodes:`
`140`		`- if self.__fqdn == node[0].lower():`
	`140`	`+ if self.__fqdn == node[0].lower() and len(node[0].split(".")) < 3:`
`141`	`141`	`raise ConfigurationError(`
`142`	`142`	`"Invalid SRV host: return address is identical to SRV hostname"`
`143`	`143`	`)`
Original file line number	Diff line number	Diff line change
`@@ -137,7 +137,7 @@ def _get_srv_response_and_hosts(`
`137`	`137`
`138`	`138`	`# Validate hosts`
`139`	`139`	`for node in nodes:`
`140`		`- if self.__fqdn == node[0].lower():`
	`140`	`+ if self.__fqdn == node[0].lower() and len(node[0].split(".")) < 3:`
`141`	`141`	`raise ConfigurationError(`
`142`	`142`	`"Invalid SRV host: return address is identical to SRV hostname"`
`143`	`143`	`)`