Partial revert "tls: keep track of stream that is closed"

This partually reverts commit 4cdb0e8.

A nullptr check in TSLWrap::IsAlive() and the added test were left.

PR-URL: nodejs/node#11947
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

lib/_tls_wrap.js

@@ -378,12 +378,6 @@ TLSSocket.prototype._wrapHandle = function(wrap) {
     res = null;
   });
 
-  if (wrap) {
-    wrap.on('close', function() {
-      res.onStreamClose();
-    });
-  }
-
   return res;
 };
 

src/tls_wrap.cc

@@ -789,14 +789,6 @@ void TLSWrap::EnableSessionCallbacks(
 }
 
 
-void TLSWrap::OnStreamClose(const FunctionCallbackInfo<Value>& args) {
-  TLSWrap* wrap;
-  ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());
-
-  wrap->stream_ = nullptr;
-}
-
-
 void TLSWrap::DestroySSL(const FunctionCallbackInfo<Value>& args) {
   TLSWrap* wrap;
   ASSIGN_OR_RETURN_UNWRAP(&wrap, args.Holder());
@@ -927,7 +919,6 @@ void TLSWrap::Initialize(Local<Object> target,
   env->SetProtoMethod(t, "enableSessionCallbacks", EnableSessionCallbacks);
   env->SetProtoMethod(t, "destroySSL", DestroySSL);
   env->SetProtoMethod(t, "enableCertCb", EnableCertCb);
-  env->SetProtoMethod(t, "onStreamClose", OnStreamClose);
 
   StreamBase::AddMethods<TLSWrap>(env, t, StreamBase::kFlagHasWritev);
   SSLWrap<TLSWrap>::AddMethods(env, t);

src/tls_wrap.h

@@ -140,7 +140,6 @@ class TLSWrap : public AsyncWrap,
   static void EnableCertCb(
       const v8::FunctionCallbackInfo<v8::Value>& args);
   static void DestroySSL(const v8::FunctionCallbackInfo<v8::Value>& args);
-  static void OnStreamClose(const v8::FunctionCallbackInfo<v8::Value>& args);
 
 #ifdef SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
   static void GetServername(const v8::FunctionCallbackInfo<v8::Value>& args);