From: Daniel Stenberg <daniel@haxx.se>
Date: Fri, 7 Feb 2014 14:50:31 +0000 (+0100)
Subject: http2: updated README after NSS addition
X-Git-Tag: upstream/7.37.1~620
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fa8d7ce4fef671018f0dadbd2d23ec51b440e72f;p=platform%2Fupstream%2Fcurl.git

http2: updated README after NSS addition

Changed the support to a little matrix and added brief explanation of
what ALPN and NPN are for.
---

diff --git a/lib/README.http2 b/lib/README.http2
index eaa02fa..daa6338 100644
--- a/lib/README.http2
+++ b/lib/README.http2
@@ -31,11 +31,20 @@ HTTP2 with libcurl
   option that will cause libcurl to fail if not possible to use http2.
   Consider options to explicitly disable ALPN and/or NPN.
 
+  ALPN is the TLS extension that http2 is expected to use. The NPN extension
+  is for a similar purpose, was made prior to ALPN and is used for SPDY so
+  early http2 servers are implemented using NPN before ALPN support is
+  widespread.
+
 SSL libs
 
-  The challange is the ALPN and NPN support and all our different SSL
-  backends.  Right now we support ALPN and NPN with OpenSSL and ALPN with
-  GnuTLS.
+  The challenge is the ALPN and NPN support and all our different SSL
+  backends. You may need a fairly updated SSL library version for it to
+  provide the necessary TLS features. Right now we support:
+
+    OpenSSL: ALPN and NPN
+    NSS:     ALPN and NPN
+    GnuTLS:  ALPN
 
 Applications