use serverInfo if _client_info is DEFAULT_CLIENT_INFO

bjoaquinc · bjoaquinc · commit db4306759fe8 · 2025-11-03T01:35:45.000+01:00
diff --git a/src/mcp/client/session.py b/src/mcp/client/session.py
@@ -167,6 +167,9 @@ async def initialize(self) -> types.InitializeResult:
             types.InitializeResult,
         )
 
+        if self._client_info is DEFAULT_CLIENT_INFO:
+            self._client_info = result.serverInfo
+
         if result.protocolVersion not in SUPPORTED_PROTOCOL_VERSIONS:
             raise RuntimeError(f"Unsupported protocol version from the server: {result.protocolVersion}")
 

Original file line number	Diff line number	Diff line change
`@@ -167,6 +167,9 @@ async def initialize(self) -> types.InitializeResult:`
`167`	`167`	`types.InitializeResult,`
`168`	`168`	`)`
`169`	`169`
	`170`	`+ if self._client_info is DEFAULT_CLIENT_INFO:`
	`171`	`+ self._client_info = result.serverInfo`
	`172`	`+`
`170`	`173`	`if result.protocolVersion not in SUPPORTED_PROTOCOL_VERSIONS:`
`171`	`174`	`raise RuntimeError(f"Unsupported protocol version from the server: {result.protocolVersion}")`
`172`	`175`