Updated release notes for HttpCore 5.1.2 release
diff --git a/RELEASE_NOTES.txt b/RELEASE_NOTES.txt
index b90c9e0..d86faae 100644
--- a/RELEASE_NOTES.txt
+++ b/RELEASE_NOTES.txt
@@ -1,3 +1,34 @@
+Release 5.1.2
+------------------
+
+This is a maintenance release that corrects a number of defects discovered since release 5.1.1
+including defects in handling of identity transfer encoded HTTP/1.1 response messages.
+
+Change Log
+-------------------
+
+* HTTPCLIENT-2174: URIBuilder to return a new empty list instead of unmodifiable
+ Collections#emptyList.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-684: Async SSL I/O session fails to propagate end-of-stream events to the protocol
+ handler. This can cause a failure in handling of identity transfer encoded HTTP/1.1 response
+ messages.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Bug fix: Async HTTP/1.1 server side protocol handler fails to correctly terminate message
+ exchanges with identity transfer encoded responses.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCORE-683: Fixed incorrect recovery from hostname resolution failures by the I/O session
+ pool.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Don't Change connection flow control window based on remote SETTINGS.
+ Contributed by Ryan Schmitt <ryansch at amazon.com>
+
+
+
Release 5.1.1
------------------
@@ -7,6 +38,7 @@
Change Log
-------------------
+
* HTTPCORE-676: Fixed incorrect handling of TLS renegotiation by non-blocking i/o sessions.
Contributed by Oleg Kalnichevski <olegk at apache.org>
