Merge pull request #981 from methane/websocket
[mono.git] / mcs / class / System / System.Net / HttpConnection.cs
index 6a15d454eac849cdeaa5fb484166a601bced0f79..d554309b695de23d85e86e7df53800aa518248c3 100644 (file)
@@ -2,9 +2,10 @@
 // System.Net.HttpConnection
 //
 // Author:
-//     Gonzalo Paniagua Javier (gonzalo@novell.com)
+//     Gonzalo Paniagua Javier (gonzalo.mono@gmail.com)
 //
-// Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
+// Copyright (c) 2005-2009 Novell, Inc. (http://www.novell.com)
+// Copyright (c) 2012 Xamarin, Inc. (http://xamarin.com)
 //
 // Permission is hereby granted, free of charge, to any person obtaining
 // a copy of this software and associated documentation files (the
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
-#if NET_2_0 && SECURITY_DEP
+#if SECURITY_DEP
+
+#if MONOTOUCH || MONODROID
+using Mono.Security.Protocol.Tls;
+#else
+extern alias MonoSecurity;
+using MonoSecurity::Mono.Security.Protocol.Tls;
+#endif
 
 using System.IO;
 using System.Net.Sockets;
 using System.Reflection;
 using System.Text;
+using System.Threading;
 using System.Security.Cryptography;
 using System.Security.Cryptography.X509Certificates;
-using Mono.Security.Protocol.Tls;
 
 namespace System.Net {
        sealed class HttpConnection
        {
+               static AsyncCallback onread_cb = new AsyncCallback (OnRead);
                const int BufferSize = 8192;
                Socket sock;
                Stream stream;
@@ -51,10 +60,16 @@ namespace System.Net {
                RequestStream i_stream;
                ResponseStream o_stream;
                bool chunked;
-               int chunked_uses;
+               int reuses;
                bool context_bound;
                bool secure;
                AsymmetricAlgorithm key;
+               int s_timeout = 90000; // 90k ms for first request, 15k ms from then on
+               Timer timer;
+               IPEndPoint local_ep;
+               HttpListener last_listener;
+               int [] client_cert_errors;
+               X509Certificate2 client_cert;
 
                public HttpConnection (Socket sock, EndPointListener epl, bool secure, X509Certificate2 cert, AsymmetricAlgorithm key)
                {
@@ -65,17 +80,35 @@ namespace System.Net {
                        if (secure == false) {
                                stream = new NetworkStream (sock, false);
                        } else {
-#if EMBEDDED_IN_1_0
-                               throw new NotImplementedException ();
-#else
-                               SslServerStream ssl_stream = new SslServerStream (new NetworkStream (sock, false), cert, false, false);
+                               SslServerStream ssl_stream = new SslServerStream (new NetworkStream (sock, false), cert, false, true, false);
                                ssl_stream.PrivateKeyCertSelectionDelegate += OnPVKSelection;
+                               ssl_stream.ClientCertValidationDelegate += OnClientCertificateValidation;
                                stream = ssl_stream;
-#endif
                        }
+                       timer = new Timer (OnTimeout, null, Timeout.Infinite, Timeout.Infinite);
                        Init ();
                }
 
+               internal int [] ClientCertificateErrors {
+                       get { return client_cert_errors; }
+               }
+
+               internal X509Certificate2 ClientCertificate {
+                       get { return client_cert; }
+               }
+
+               bool OnClientCertificateValidation (X509Certificate certificate, int[] errors)
+               {
+                       if (certificate == null)
+                               return true;
+                       X509Certificate2 cert = certificate as X509Certificate2;
+                       if (cert == null)
+                               cert = new X509Certificate2 (certificate.GetRawCertData ());
+                       client_cert = cert;
+                       client_cert_errors = errors;
+                       return true;
+               }
+
                AsymmetricAlgorithm OnPVKSelection (X509Certificate certificate, string targetHost)
                {
                        return key;
@@ -95,12 +128,22 @@ namespace System.Net {
                        context = new HttpListenerContext (this);
                }
 
-               public int ChunkedUses {
-                       get { return chunked_uses; }
+               public bool IsClosed {
+                       get { return (sock == null); }
+               }
+
+               public int Reuses {
+                       get { return reuses; }
                }
 
                public IPEndPoint LocalEndPoint {
-                       get { return (IPEndPoint) sock.LocalEndPoint; }
+                       get {
+                               if (local_ep != null)
+                                       return local_ep;
+
+                               local_ep = (IPEndPoint) sock.LocalEndPoint;
+                               return local_ep;
+                       }
                }
 
                public IPEndPoint RemoteEndPoint {
@@ -116,14 +159,25 @@ namespace System.Net {
                        set { prefix = value; }
                }
 
+               void OnTimeout (object unused)
+               {
+                       CloseSocket ();
+                       Unbind ();
+               }
+
                public void BeginReadRequest ()
                {
                        if (buffer == null)
                                buffer = new byte [BufferSize];
                        try {
-                               stream.BeginRead (buffer, 0, BufferSize, OnRead, this);
+                               if (reuses == 1)
+                                       s_timeout = 15000;
+                               timer.Change (s_timeout, Timeout.Infinite);
+                               stream.BeginRead (buffer, 0, BufferSize, onread_cb, this);
                        } catch {
-                               sock.Close (); // stream disposed
+                               timer.Change (Timeout.Infinite, Timeout.Infinite);
+                               CloseSocket ();
+                               Unbind ();
                        }
                }
 
@@ -155,9 +209,26 @@ namespace System.Net {
                        return o_stream;
                }
 
-               void OnRead (IAsyncResult ares)
+               internal Socket Hijack (out ArraySegment<byte> buffered)
+               {
+                       // TODO: disable normal request/response.
+                       buffered = new ArraySegment<byte> (ms.GetBuffer(), position, (int)ms.Length - position);
+                       RemoveConnection ();
+                       var s = sock;
+                       sock = null;
+                       o_stream = null;
+                       return s;
+               }
+
+               static void OnRead (IAsyncResult ares)
                {
                        HttpConnection cnc = (HttpConnection) ares.AsyncState;
+                       cnc.OnReadInternal (ares);
+               }
+
+               void OnReadInternal (IAsyncResult ares)
+               {
+                       timer.Change (Timeout.Infinite, Timeout.Infinite);
                        int nread = -1;
                        try {
                                nread = stream.EndRead (ares);
@@ -170,15 +241,18 @@ namespace System.Net {
                        } catch {
                                if (ms != null && ms.Length > 0)
                                        SendError ();
-                               if (sock != null)
-                                       sock.Close ();
+                               if (sock != null) {
+                                       CloseSocket ();
+                                       Unbind ();
+                               }
                                return;
                        }
 
                        if (nread == 0) {
                                //if (ms.Length > 0)
                                //      SendError (); // Why bother?
-                               sock.Close ();
+                               CloseSocket ();
+                               Unbind ();
                                return;
                        }
 
@@ -195,11 +269,28 @@ namespace System.Net {
                                if (!epl.BindContext (context)) {
                                        SendError ("Invalid host", 400);
                                        Close (true);
+                                       return;
+                               }
+                               HttpListener listener = context.Listener;
+                               if (last_listener != listener) {
+                                       RemoveConnection ();
+                                       listener.AddConnection (this);
+                                       last_listener = listener;
                                }
+
                                context_bound = true;
+                               listener.RegisterContext (context);
                                return;
                        }
-                       stream.BeginRead (buffer, 0, BufferSize, OnRead, cnc);
+                       stream.BeginRead (buffer, 0, BufferSize, onread_cb, this);
+               }
+
+               void RemoveConnection ()
+               {
+                       if (last_listener == null)
+                               epl.RemoveConnection (this);
+                       else
+                               last_listener.RemoveConnection (this);
                }
 
                enum InputState {
@@ -284,7 +375,7 @@ namespace System.Net {
                string ReadLine (byte [] buffer, int offset, int len, ref int used)
                {
                        if (current_line == null)
-                               current_line = new StringBuilder ();
+                               current_line = new StringBuilder (128);
                        int last = offset + len;
                        used = 0;
                        for (int i = offset; i < last && line_state != LineState.LF; i++) {
@@ -347,35 +438,55 @@ namespace System.Net {
                        Close (false);
                }
 
+               void CloseSocket ()
+               {
+                       if (sock == null)
+                               return;
+
+                       try {
+                               sock.Close ();
+                       } catch {
+                       } finally {
+                               sock = null;
+                       }
+                       RemoveConnection ();
+               }
+
                internal void Close (bool force_close)
                {
                        if (sock != null) {
                                Stream st = GetResponseStream ();
-                               st.Close ();
+                               if (st != null)
+                                       st.Close ();
+
                                o_stream = null;
                        }
 
                        if (sock != null) {
-                               force_close |= (context.Request.Headers ["connection"] == "close");
+                               force_close |= !context.Request.KeepAlive;
+                               if (!force_close)
+                                       force_close = (context.Response.Headers ["connection"] == "close");
+                               /*
                                if (!force_close) {
-                                       int status_code = context.Response.StatusCode;
-                                       bool conn_close = (status_code == 400 || status_code == 408 || status_code == 411 ||
-                                                       status_code == 413 || status_code == 414 || status_code == 500 ||
-                                                       status_code == 503);
+//                                     bool conn_close = (status_code == 400 || status_code == 408 || status_code == 411 ||
+//                                                     status_code == 413 || status_code == 414 || status_code == 500 ||
+//                                                     status_code == 503);
 
                                        force_close |= (context.Request.ProtocolVersion <= HttpVersion.Version10);
                                }
+                               */
 
                                if (!force_close && context.Request.FlushInput ()) {
                                        if (chunked && context.Response.ForceCloseChunked == false) {
                                                // Don't close. Keep working.
-                                               chunked_uses++;
+                                               reuses++;
                                                Unbind ();
                                                Init ();
                                                BeginReadRequest ();
                                                return;
                                        }
 
+                                       reuses++;
                                        Unbind ();
                                        Init ();
                                        BeginReadRequest ();
@@ -385,12 +496,15 @@ namespace System.Net {
                                Socket s = sock;
                                sock = null;
                                try {
-                                       s.Shutdown (SocketShutdown.Both);
+                                       if (s != null)
+                                               s.Shutdown (SocketShutdown.Both);
                                } catch {
                                } finally {
-                                       s.Close ();
+                                       if (s != null)
+                                               s.Close ();
                                }
                                Unbind ();
+                               RemoveConnection ();
                                return;
                        }
                }