From f48805a2d1097c7f880f051571a4e0349808074f Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Wed, 15 Jan 2014 17:36:23 +0900
Subject: [PATCH] Refactored Handshake*.cs

---
 websocket-sharp/HandshakeBase.cs     |  6 ++----
 websocket-sharp/HandshakeRequest.cs  | 20 +++++++++-----------
 websocket-sharp/HandshakeResponse.cs | 24 ++++++++++--------------
 3 files changed, 21 insertions(+), 29 deletions(-)

diff --git a/websocket-sharp/HandshakeBase.cs b/websocket-sharp/HandshakeBase.cs
index 542941b5..f60e235b 100644
--- a/websocket-sharp/HandshakeBase.cs
+++ b/websocket-sharp/HandshakeBase.cs
@@ -53,8 +53,6 @@ namespace WebSocketSharp
 
     protected HandshakeBase ()
     {
-      _version = HttpVersion.Version11;
-      _headers = new NameValueCollection ();
     }
 
     #endregion
@@ -85,7 +83,7 @@ namespace WebSocketSharp
 
     public NameValueCollection Headers {
       get {
-        return _headers;
+        return _headers ?? (_headers = new NameValueCollection ());
       }
 
       protected set {
@@ -95,7 +93,7 @@ namespace WebSocketSharp
 
     public Version ProtocolVersion {
       get {
-        return _version;
+        return _version ?? (_version = HttpVersion.Version11);
       }
 
       protected set {
diff --git a/websocket-sharp/HandshakeRequest.cs b/websocket-sharp/HandshakeRequest.cs
index 875057e2..79ecfee4 100644
--- a/websocket-sharp/HandshakeRequest.cs
+++ b/websocket-sharp/HandshakeRequest.cs
@@ -57,11 +57,9 @@ namespace WebSocketSharp
 
     public HandshakeRequest (string uriString)
     {
-      _method = "GET";
       _uri = uriString.ToUri ();
-      _rawUrl = _uri.IsAbsoluteUri
-              ? _uri.PathAndQuery
-              : uriString;
+      _rawUrl = _uri.IsAbsoluteUri ? _uri.PathAndQuery : uriString;
+      _method = "GET";
 
       var headers = Headers;
       headers ["User-Agent"] = "websocket-sharp/1.0";
@@ -76,7 +74,7 @@ namespace WebSocketSharp
     public AuthenticationResponse AuthResponse {
       get {
         var response = Headers ["Authorization"];
-        return !response.IsNullOrEmpty ()
+        return response != null && response.Length > 0
                ? AuthenticationResponse.Parse (response)
                : null;
       }
@@ -112,6 +110,7 @@ namespace WebSocketSharp
       get {
         if (_queryString == null) {
           _queryString = new NameValueCollection ();
+
           var i = RawUrl.IndexOf ('?');
           if (i > 0) {
             var query = RawUrl.Substring (i + 1);
@@ -155,16 +154,15 @@ namespace WebSocketSharp
 
     #region Public Methods
 
-    public static HandshakeRequest Parse (string [] request)
+    public static HandshakeRequest Parse (string [] headerParts)
     {
-      var requestLine = request [0].Split (' ');
+      var requestLine = headerParts [0].Split (new char [] { ' ' }, 3);
       if (requestLine.Length != 3)
-        throw new ArgumentException (
-          "Invalid HTTP Request-Line: " + request [0], "request");
+        throw new ArgumentException ("Invalid request line: " + headerParts [0]);
 
       var headers = new WebHeaderCollection ();
-      for (int i = 1; i < request.Length; i++)
-        headers.SetInternal (request [i], false);
+      for (int i = 1; i < headerParts.Length; i++)
+        headers.SetInternal (headerParts [i], false);
 
       return new HandshakeRequest {
         Headers = headers,
diff --git a/websocket-sharp/HandshakeResponse.cs b/websocket-sharp/HandshakeResponse.cs
index 7bcc13cf..a52a64fc 100644
--- a/websocket-sharp/HandshakeResponse.cs
+++ b/websocket-sharp/HandshakeResponse.cs
@@ -72,7 +72,7 @@ namespace WebSocketSharp
     public AuthenticationChallenge AuthChallenge {
       get {
         var challenge = Headers ["WWW-Authenticate"];
-        return !challenge.IsNullOrEmpty ()
+        return challenge != null && challenge.Length > 0
                ? AuthenticationChallenge.Parse (challenge)
                : null;
       }
@@ -132,25 +132,21 @@ namespace WebSocketSharp
       return res;
     }
 
-    public static HandshakeResponse Parse (string [] response)
+    public static HandshakeResponse Parse (string [] headerParts)
     {
-      var statusLine = response [0].Split (' ');
-      if (statusLine.Length < 3)
-        throw new ArgumentException ("Invalid status line.");
-
-      var reason = new StringBuilder (statusLine [2], 64);
-      for (int i = 3; i < statusLine.Length; i++)
-        reason.AppendFormat (" {0}", statusLine [i]);
+      var statusLine = headerParts [0].Split (new char [] { ' ' }, 3);
+      if (statusLine.Length != 3)
+        throw new ArgumentException ("Invalid status line: " + headerParts [0]);
 
       var headers = new WebHeaderCollection ();
-      for (int i = 1; i < response.Length; i++)
-        headers.SetInternal (response [i], true);
+      for (int i = 1; i < headerParts.Length; i++)
+        headers.SetInternal (headerParts [i], true);
 
       return new HandshakeResponse {
         Headers = headers,
-        Reason = reason.ToString (),
-        StatusCode = statusLine [1],
-        ProtocolVersion = new Version (statusLine [0].Substring (5))
+        ProtocolVersion = new Version (statusLine [0].Substring (5)),
+        Reason = statusLine [2],
+        StatusCode = statusLine [1]
       };
     }