From 6198472d8390d9476f555c634b7aa66ce6c6d0fe Mon Sep 17 00:00:00 2001
From: Fedor Indutny <fedor@indutny.com>
Date: Tue, 19 Apr 2016 14:46:53 -0400
Subject: stream_base: expose `bytesRead` getter

This will provide `bytesRead` data on consumed sockets.

Fix: #3021
PR-URL: https://github.com/nodejs/node/pull/6284
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
---
 src/stream_base-inl.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'src/stream_base-inl.h')

diff --git a/src/stream_base-inl.h b/src/stream_base-inl.h
index 81114a265e..099e105334 100644
--- a/src/stream_base-inl.h
+++ b/src/stream_base-inl.h
@@ -43,6 +43,13 @@ void StreamBase::AddMethods(Environment* env,
                                      v8::DEFAULT,
                                      attributes);
 
+  t->InstanceTemplate()->SetAccessor(env->bytes_read_string(),
+                                     GetBytesRead<Base>,
+                                     nullptr,
+                                     env->as_external(),
+                                     v8::DEFAULT,
+                                     attributes);
+
   env->SetProtoMethod(t, "readStart", JSMethod<Base, &StreamBase::ReadStart>);
   env->SetProtoMethod(t, "readStop", JSMethod<Base, &StreamBase::ReadStop>);
   if ((flags & kFlagNoShutdown) == 0)
@@ -79,6 +86,16 @@ void StreamBase::GetFD(Local<String> key,
 }
 
 
+template <class Base>
+void StreamBase::GetBytesRead(Local<String> key,
+                              const PropertyCallbackInfo<Value>& args) {
+  StreamBase* wrap = Unwrap<Base>(args.Holder());
+
+  // uint64_t -> double. 53bits is enough for all real cases.
+  args.GetReturnValue().Set(static_cast<double>(wrap->bytes_read_));
+}
+
+
 template <class Base>
 void StreamBase::GetExternal(Local<String> key,
                              const PropertyCallbackInfo<Value>& args) {
-- 
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