SERVER-35615 Validate isMaster response before calling validateHost hook

(cherry picked from commit 6c08a0a6455267d215e55838d59cb010dfeaa204)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mongo/client/async_client.cpp b/src/mongo/client/async_client.cpp
index 5a7a90cf762..1c75d5b0f18 100644
--- a/src/mongo/client/async_client.cpp
+++ b/src/mongo/client/async_client.cpp
@@ -182,12 +182,12 @@ Future<void> AsyncDBClient::initWireVersion(const std::string& appName,
 
     return _call(requestMsg).then([this, requestObj, hook, clkSource, start](Message response) {
         auto cmdReply = rpc::makeReply(&response);
+        _parseIsMasterResponse(requestObj, cmdReply);
         if (hook) {
             auto millis = duration_cast<Milliseconds>(clkSource->now() - start);
             executor::RemoteCommandResponse cmdResp(*cmdReply, millis);
             uassertStatusOK(hook->validateHost(_peer, requestObj, std::move(cmdResp)));
         }
-        _parseIsMasterResponse(requestObj, cmdReply);
     });
 }