From e53f7712788563387e6a907f4191410640999389 Mon Sep 17 00:00:00 2001
From: Richard Whitehouse <github@richardwhiuk.com>
Date: Sun, 29 Oct 2017 22:08:33 +0000
Subject: [PATCH] Support Supported header

---
 src/codec.rs  | 4 ++--
 src/parser.rs | 9 ++++++++-
 src/types.rs  | 1 +
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/src/codec.rs b/src/codec.rs
index a832bb3..ff40f5f 100644
--- a/src/codec.rs
+++ b/src/codec.rs
@@ -445,8 +445,8 @@ mod tests {
                            username=\"Bob\"\r\nProxy-Require:foo\r\nRecord-Route:<sip:server10.\
                            biloxi.com;lr>\r\nReply-To:<sip:bob@biloxi.com>\r\nRequire:\
                            baz\r\nRetry-After:18000;duration=3600\r\nRoute:<sip:bigbox3.site3.\
-                           atlanta.com;lr>\r\nServer:rust-sip tokio\r\nSubject:Foobaz\r\nVia: \
-                           localhost\r\n\r\n")
+                           atlanta.com;lr>\r\nServer:rust-sip \
+                           tokio\r\nSubject:Foobaz\r\nSupported:rec\r\nVia: localhost\r\n\r\n")
         });
 
         let finished = request.and_then(|(socket, _request)| {
diff --git a/src/parser.rs b/src/parser.rs
index e5f3db3..2667bde 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -1108,6 +1108,12 @@ named!(subject_header<Vec<u8>>, preceded!(
 	alt!(tag!(b"Subject:") | tag!(b"s")),
 	word));
 
+named!(supported_header<Vec<OptionTag>>, preceded!(
+	alt!(tag!(b"Supported:") | tag!(b"k")),
+	separated_nonempty_list!(
+		tag!(b","),
+		token)));
+
 named!(pub header<Header>, alt!(
 // RFC 3261 Headers
 	accept_header => { |a| Header::Accept(a) } |
@@ -1145,5 +1151,6 @@ named!(pub header<Header>, alt!(
 	retry_after_header => { |r| Header::RetryAfter(r) } |
 	route_header => { |r| Header::Route(r) } |
 	server_header => { |s| Header::Server(s) } |
-	subject_header => { |s| Header::Subject(s) }
+	subject_header => { |s| Header::Subject(s) } |
+	supported_header => { |s| Header::Supported(s) }
 ));
diff --git a/src/types.rs b/src/types.rs
index fe88f44..89ac8e8 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -427,6 +427,7 @@ pub enum Header {
     Route(Vec<Route>),
     Server(Vec<Server>),
     Subject(Vec<u8>),
+    Supported(Vec<OptionTag>),
     To(Uri),
     Extension { name: String, value: String },
 }
-- 
2.34.1