/// <summary>
/// Closes a comunication stream for a specific BindingContext
/// </summary>
/// <param name="stream">The stream to close.</param>
/// <param name="ctx">The context to close the stream for.</param>
public void Close( Stream stream, BindingContext ctx )
{
if(this.OnClose( stream, ctx ) == ChainResult.Continue && m_Next != null)
{
m_Next.Close( stream, ctx );
}
}
/// <summary>
/// Opens a comunication stream for a specific BindingContext
/// </summary>
/// <param name="stream">The stream to open.</param>
/// <param name="ctx">The context to open the stream for.</param>
public void Open( ref Stream stream, BindingContext ctx )
{
if (this.m_Next != null)
{
this.m_Next.Open(ref stream, ctx);
}
this.OnOpen(ref stream, ctx);
}
/// <summary>
/// Processes an output message for a specific context
/// </summary>
/// <param name="message">The message to process.</param>
/// <param name="ctx">The context to process the message for.</param>
/// <returns><c>true</c> if the processing was succesfull, <c>false</c>otherwise.</returns>
public bool ProcessOutputMessage(ref WsMessage message, BindingContext ctx)
{
ChainResult res = this.OnProcessOutputMessage( ref message, ctx );
if( ChainResult.Continue == res && m_Next != null)
{
return m_Next.ProcessOutputMessage( ref message, ctx );
}
return res == ChainResult.Handled;
}
/// <summary>
/// Opens the stream for the HTTP tansport binding
/// </summary>
/// <param name="stream">The stream for this binding.</param>
/// <param name="ctx">The context associated with the stream for this binding.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnOpen(ref Stream stream, BindingContext ctx)
{
if(ctx is ServerBindingContext)
{
m_httpListener = new HttpListener("http", m_endpointUri.Port);
m_httpListener.Start();
}
return ChainResult.Handled;
}
/// <summary>
/// A RequestContext object is created by the ReplyChannel when a request is received.
/// </summary>
/// <param name="message">The request incomming message</param>
/// <param name="channel">The communication channel associated with the message</param>
/// <param name="ctx">The binding context associated with the channel</param>
internal RequestContext(WsMessage message, ReplyChannel channel, BindingContext ctx)
{
this.m_message = message;
this.m_channel = channel;
this.m_context = ctx;
}
/// <summary>
/// Processes a message
/// </summary>
/// <param name="stream">The message being processed.</param>
/// <param name="ctx">The context associated with the message.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnProcessInputMessage( ref WsMessage msg, BindingContext ctx )
{
byte[] soapMessage = null;
byte[] buffer = new byte[MaxUdpPacketSize];
while (true)
{
EndPoint remoteEndpoint = new IPEndPoint(IPAddress.Any, 0);
int size = m_udpReceiveClient.ReceiveFrom(buffer, MaxUdpPacketSize, SocketFlags.None, ref remoteEndpoint);
// If the stack is set to ignore request from this address do so
if (m_config.IgnoreRequestsFromThisIp && ((IPEndPoint)remoteEndpoint).Address.Equals(s_localIP))
{
continue;
}
if (size > 0)
{
soapMessage = new byte[size];
Array.Copy(buffer, soapMessage, size);
}
else
{
System.Ext.Console.Write("UDP Receive returned 0 bytes");
}
ctx.ContextObject = remoteEndpoint;
System.Ext.Console.Write("UDP Request From: " + remoteEndpoint.ToString());
System.Ext.Console.Write(soapMessage);
break;
}
msg.Body = soapMessage;
return ChainResult.Continue;
}
/// <summary>
/// Opens the stream for the UDP tansport binding
/// </summary>
/// <param name="stream">The stream for this binding.</param>
/// <param name="ctx">The context associated with the stream for this binding.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnOpen( ref Stream stream, BindingContext ctx )
{
m_udpReceiveClient = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint localEP = new IPEndPoint(s_localIP, m_config.DiscoveryPort);
m_udpReceiveClient.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
m_udpReceiveClient.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveBuffer, 0x5000);
// Join Multicast Group
byte[] discoveryAddr = m_config.DiscoveryAddress.GetAddressBytes();
byte[] ipAddr = s_localIP.GetAddressBytes();
byte[] multicastOpt = new byte[] { discoveryAddr[0], discoveryAddr[1], discoveryAddr[2], discoveryAddr[3], // WsDiscovery Multicast Address: 239.255.255.250
ipAddr [0], ipAddr [1], ipAddr [2], ipAddr [3] }; // Local IPAddress
m_udpReceiveClient.Bind(localEP);
m_udpReceiveClient.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastInterface, ipAddr );
m_udpReceiveClient.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, multicastOpt);
return ChainResult.Continue;
}
/// <summary>
/// Processes a message
/// </summary>
/// <param name="msg">The message being processed.</param>
/// <param name="ctx">The context associated with the message.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnProcessOutputMessage( ref WsMessage msg, BindingContext ctx )
{
byte[] data = null;
// if the body is a byte[] then it is already serialized (UDP stuff)
if (msg == null || (msg.Body != null && msg.Body is byte[])) return ChainResult.Continue;
// Build response message
using (XmlMemoryWriter xmlWriter = XmlMemoryWriter.Create())
{
WsSoapMessageWriter smw = new WsSoapMessageWriter(ctx.Version);
// Write start message up to body element content
smw.WriteSoapMessageStart(xmlWriter, msg, ctx.Version.IncludeSoapHeaders);
if (msg.Body != null && msg.Serializer != null)
{
DataContractSerializer ser = (DataContractSerializer)msg.Serializer;
// Serialize the body element
ser.WriteObject(xmlWriter, msg.Body);
if(ser.BodyParts != null && ser.BodyParts.Count > 0)
{
msg.BodyParts = ser.BodyParts;
}
}
// Write end message
smw.WriteSoapMessageEnd(xmlWriter);
data = xmlWriter.ToArray();
}
WsMtomBodyParts bodyParts = msg.BodyParts;
if (bodyParts != null)
{
DataContractSerializer reqDcs = (DataContractSerializer)msg.Serializer;
bodyParts.Start = "<soap@soap>";
bodyParts.AddStart(reqDcs.CreateNewBodyPart(data, bodyParts.Start));
if (reqDcs.BodyParts.Count > 0)
{
bodyParts.Add(reqDcs.BodyParts[0]);
}
WsMtomParams mtomParams = new WsMtomParams();
if (bodyParts.Boundary == null)
bodyParts.Boundary = Guid.NewGuid().ToString() + '-' + Guid.NewGuid().ToString().Substring(0, 33);
mtomParams.start = bodyParts.Start;
mtomParams.boundary = bodyParts.Boundary;
msg.MtomPropeties = mtomParams;
WsMtom mtom = new WsMtom();
data = mtom.CreateMessage(bodyParts);
}
msg.Body = data;
return ChainResult.Continue;
}
internal void SendMessage( WsMessage message, BindingContext ctx )
{
// Reset the binding properties as they were likely changed by the receive
ctx.BindingProperties = (ArrayList)m_context.BindingProperties.Clone();
m_binding.Elements.ProcessOutputMessage( ref message, ctx );
}
/// <summary>
/// A RequestContext object is created by the ReplyChannel when a request is received.
/// </summary>
/// <param name="message">The request incomming message</param>
/// <param name="channel">The communication channel associated with the message</param>
/// <param name="ctx">The binding context associated with the channel</param>
internal RequestContext( WsMessage message, ReplyChannel channel, BindingContext ctx )
{
this.m_message = message;
this.m_channel = channel;
this.m_context = ctx;
}
private void SendMessage( WsMessage message, BindingContext ctx )
{
m_binding.Elements.ProcessOutputMessage( ref message, ctx );
}
/// <summary>
/// Processes a message
/// </summary>
/// <param name="msg">The message being processed.</param>
/// <param name="ctx">The context associated with the message.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnProcessOutputMessage(ref WsMessage msg, BindingContext ctx)
{
ArrayList props = ctx.BindingProperties;
byte[] message = null;
string contentType = "text/plain";
if (msg != null)
{
message = msg.Body as byte[];
if (msg.BodyParts != null)
{
contentType = "Multipart/Related;boundary=" +
msg.MtomPropeties.boundary +
";type=\"application/xop+xml\";start=\"" +
msg.MtomPropeties.start +
"\";start-info=\"application/soap+xml\"";
ctx.BindingProperties.Add(new BindingProperty("header", HttpKnownHeaderNames.Server, "Microsoft-MF HTTP 1.0"));
ctx.BindingProperties.Add(new BindingProperty("header", HttpKnownHeaderNames.MimeVersion, "1.0"));
ctx.BindingProperties.Add(new BindingProperty("header", HttpKnownHeaderNames.Date, DateTime.Now.ToString()));
}
else
{
contentType = "application/soap+xml; charset=utf-8";
}
}
if (ctx is ClientBindingContext)
{
if (message == null)
{
return(ChainResult.Abort);
}
HttpWebRequest request = HttpWebRequest.Create(new Uri(m_endpointUri.AbsoluteUri)) as HttpWebRequest;
request.Timeout = (int)(ctx.OpenTimeout.Ticks / TimeSpan.TicksPerMillisecond);
request.ReadWriteTimeout = (int)(ctx.ReceiveTimeout.Ticks / TimeSpan.TicksPerMillisecond);
ctx.ContextObject = request;
// Post method
request.Method = "POST";
WebHeaderCollection headers = request.Headers;
request.ContentType = contentType;
request.UserAgent = "MFWsAPI";
request.Headers.Add(HttpKnownHeaderNames.CacheControl, "no-cache");
request.Headers.Add(HttpKnownHeaderNames.Pragma, "no-cache");
if (props != null)
{
int len = props.Count;
for (int i = 0; i < len; i++)
{
BindingProperty prop = (BindingProperty)props[i];
string container = prop.Container;
if (container == "header")
{
headers.Add(prop.Name, (string)prop.Value);
}
else if (container == null || container == "")
{
string name = prop.Name;
if (name == HttpKnownHeaderNames.ContentType)
{
request.ContentType = (string)prop.Value;
}
else if (name == HttpKnownHeaderNames.UserAgent)
{
request.UserAgent = (string)prop.Value;
}
}
}
}
if (message != null)
{
System.Ext.Console.Write("Http message sent: ");
System.Ext.Console.Write(message);
request.ContentLength = message.Length;
using (Stream stream = request.GetRequestStream())
{
// Write soap message
stream.Write(message, 0, message.Length);
// Flush the stream and force a write
stream.Flush();
}
}
}
else
{
HttpListenerContext listenerContext = ctx.ContextObject as HttpListenerContext;
if (listenerContext == null)
{
return(ChainResult.Abort);
}
HttpListenerResponse listenerResponse = listenerContext.Response;
if (listenerResponse == null || listenerResponse.OutputStream == null)
{
return(ChainResult.Abort);
}
try
{
using (StreamWriter streamWriter = new StreamWriter(listenerResponse.OutputStream))
{
// Write Header, if message is null write accepted
if (message == null)
{
listenerResponse.StatusCode = 202;
}
else
{
listenerResponse.StatusCode = 200;
}
// Check to see it the hosted service is sending mtom
WebHeaderCollection headers = listenerResponse.Headers;
listenerResponse.ContentType = contentType;
bool isChunked = false;
if (props != null)
{
int len = props.Count;
for (int i = 0; i < len; i++)
{
BindingProperty prop = (BindingProperty)props[i];
string container = prop.Container;
string name = prop.Name;
string value = (string)prop.Value;
if (container == "header")
{
if (!isChunked && name == HttpKnownHeaderNames.TransferEncoding && value.ToLower() == "chunked")
{
isChunked = true;
}
headers.Add(name, (string)prop.Value);
}
else if (container == null || container == "")
{
if (name == HttpKnownHeaderNames.ContentType)
{
listenerResponse.ContentType = (string)prop.Value;
System.Ext.Console.Write(HttpKnownHeaderNames.ContentType + ": " + listenerResponse.ContentType);
}
}
}
}
// If chunked encoding is enabled write chunked message else write Content-Length
if (isChunked)
{
// Chunk message
int bufferIndex = 0;
int chunkSize = 0;
int defaultChunkSize = 0xff;
#if DEBUG
byte[] displayBuffer = new byte[defaultChunkSize];
#endif
while (bufferIndex < message.Length)
{
// Calculate chunk size and write to stream
chunkSize = message.Length - bufferIndex < defaultChunkSize ? message.Length - bufferIndex : defaultChunkSize;
streamWriter.WriteLine(chunkSize.ToString("{0:X}"));
System.Ext.Console.Write(chunkSize.ToString("{0:X}"));
// Write chunk
streamWriter.WriteBytes(message, bufferIndex, chunkSize);
streamWriter.WriteLine();
#if DEBUG
Array.Copy(message, bufferIndex, displayBuffer, 0, chunkSize);
System.Ext.Console.Write(displayBuffer, bufferIndex, chunkSize);
#endif
// Adjust buffer index
bufferIndex = bufferIndex + chunkSize;
}
// Write 0 length and blank line
streamWriter.WriteLine("0");
streamWriter.WriteLine();
System.Ext.Console.Write("0");
System.Ext.Console.Write("");
}
else
{
if (message == null)
{
listenerResponse.ContentLength64 = 0;
}
else
{
listenerResponse.ContentLength64 = message.Length;
}
System.Ext.Console.Write("Content Length: " + listenerResponse.ContentLength64);
// If an empty message is returned (i.e. oneway request response) don't send
if (message != null && message.Length > 0)
{
System.Ext.Console.Write(message);
// Write soap message
streamWriter.WriteBytes(message, 0, message.Length);
}
}
// Flush the stream and return
streamWriter.Flush();
}
}
catch
{
return(ChainResult.Abort);
}
finally
{
listenerContext.Close();
}
}
return(ChainResult.Handled);
}
/// <summary>
/// Closes the stream for the HTTP transport binding
/// </summary>
/// <param name="stream">The stream for this binding.</param>
/// <param name="ctx">The context associated with the stream for this binding.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnClose( Stream stream, BindingContext ctx )
{
if (ctx is ServerBindingContext)
{
if (ctx.ContextObject != null)
{
((HttpListenerContext)ctx.ContextObject).Close();
ctx.ContextObject = null;
}
if (m_httpListener != null)
{
m_httpListener.Close();
m_httpListener = null;
}
}
else
{
if(ctx.ContextObject != null)
{
((HttpWebRequest)ctx.ContextObject).Dispose();
ctx.ContextObject = null;
}
}
return ChainResult.Handled;
}
/// <summary>
/// Processes a message
/// </summary>
/// <param name="stream">The message being processed.</param>
/// <param name="ctx">The context associated with the message.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnProcessInputMessage(ref WsMessage msg, BindingContext ctx)
{
byte[] soapResponse = null;
WebHeaderCollection headers = null;
if (ctx is ClientBindingContext)
{
HttpWebRequest request = ctx.ContextObject as HttpWebRequest;
if (request == null)
{
msg = null;
return(ChainResult.Abort);
}
HttpWebResponse resp = request.GetResponse() as HttpWebResponse;
if (resp == null)
{
throw new WebException("", WebExceptionStatus.ReceiveFailure); // No response was received on the HTTP channel
}
try
{
headers = (System.Net.WebHeaderCollection)resp.Headers;
if (resp.ProtocolVersion != HttpVersion.Version11)
{
throw new IOException(); // Invalid http version in response line.
}
if (resp.StatusCode != HttpStatusCode.OK && resp.StatusCode != HttpStatusCode.Accepted)
{
throw new IOException(); // Bad status code in response
}
if (resp.ContentLength > 0)
{
// Return the soap response.
soapResponse = new byte[(int)resp.ContentLength];
Stream respStream = resp.GetResponseStream();
respStream.ReadTimeout = (int)(ctx.ReceiveTimeout.Ticks / TimeSpan.TicksPerMillisecond);
// Now need to read all data. We read in the loop until resp.ContentLength or zero bytes read.
// Zero bytes read means there was error on server and it did not send all data.
int respLength = (int)resp.ContentLength;
for (int totalBytesRead = 0; totalBytesRead < respLength;)
{
int bytesRead = respStream.Read(soapResponse, totalBytesRead, (int)resp.ContentLength - totalBytesRead);
// If nothing is read - means server closed connection or timeout. In this case no retry.
if (bytesRead == 0)
{
break;
}
// Adds number of bytes read on this iteration.
totalBytesRead += bytesRead;
}
headers = resp.Headers;
}
//
// ContentLenght == 0 is OK
//
else if (resp.ContentLength < 0)
{
throw new ProtocolViolationException(); // Invalid http header, content lenght < 0
}
}
finally
{
resp.Dispose();
request.Dispose();
ctx.ContextObject = null;
}
}
else // server waits for messages
{
if (m_httpListener == null)
{
msg = null;
return(ChainResult.Abort);
}
HttpListenerContext listenerContext = m_httpListener.GetContext();
if (listenerContext == null)
{
msg = null;
return(ChainResult.Abort);
}
ctx.ContextObject = listenerContext;
// The context returned by m_httpListener.GetContext(); can be null in case the service was stopped.
HttpListenerRequest listenerRequest = listenerContext.Request;
HttpListenerResponse listenerResponse = listenerContext.Response;
listenerRequest.InputStream.ReadTimeout = (int)(ctx.ReceiveTimeout.Ticks / TimeSpan.TicksPerMillisecond);
listenerResponse.OutputStream.WriteTimeout = (int)(ctx.SendTimeout.Ticks / TimeSpan.TicksPerMillisecond);
headers = (System.Net.WebHeaderCollection)listenerRequest.Headers;
System.Ext.Console.Write("Request From: " + listenerRequest.RemoteEndPoint.ToString());
// Checks and process headers important for DPWS
if (!ProcessKnownHeaders(listenerContext))
{
msg = null;
return(ChainResult.Abort);
}
soapResponse = null;
int messageLength = (int)listenerRequest.ContentLength64;
if (messageLength > 0)
{
// If there is content length for the message, we read it complete.
soapResponse = new byte[messageLength];
for (int offset = 0; offset < messageLength;)
{
int noRead = listenerRequest.InputStream.Read(soapResponse, offset, messageLength - offset);
if (noRead == 0)
{
throw new IOException("Http server got only " + offset + " bytes. Expected to read " + messageLength + " bytes.");
}
offset += noRead;
}
}
else
{
// In this case the message is chunk encoded, but m_httpRequest.InputStream actually does processing.
// So we we read until zero bytes are read.
bool readComplete = false;
int bufferSize = ReadPayload;
soapResponse = new byte[bufferSize];
int offset = 0;
while (!readComplete)
{
while (offset < ReadPayload)
{
int noRead = listenerRequest.InputStream.Read(soapResponse, offset, messageLength - offset);
// If we read zero bytes - means this is end of message. This is how InputStream.Read for chunked encoded data.
if (noRead == 0)
{
readComplete = true;
break;
}
offset += noRead;
}
// If read was not complete - increase the buffer.
if (!readComplete)
{
bufferSize += ReadPayload;
byte[] newMessageBuf = new byte[bufferSize];
Array.Copy(soapResponse, newMessageBuf, offset);
soapResponse = newMessageBuf;
}
}
}
}
if (headers != null)
{
string [] keys = headers.AllKeys;
int len = keys.Length;
ArrayList props = ctx.BindingProperties;
for (int i = 0; i < len; i++)
{
string key = keys[i];
props.Add(new BindingProperty("header", key, headers[key]));
}
}
System.Ext.Console.Write(soapResponse);
msg.Body = soapResponse;
return(ChainResult.Continue);
}
/// <summary>
/// Opens the stream for the UDP tansport binding
/// </summary>
/// <param name="stream">The stream for this binding.</param>
/// <param name="ctx">The context associated with the stream for this binding.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnOpen( ref Stream stream, BindingContext ctx )
{
m_udpReceiveClient = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint localEP = new IPEndPoint(IPAddress.Any, m_config.DiscoveryPort);
m_udpReceiveClient.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
m_udpReceiveClient.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveBuffer, 0x5000);
m_udpReceiveClient.Bind(localEP);
// Join Multicast Group
byte[] discoveryAddr = m_config.DiscoveryAddress.GetAddressBytes();
byte[] multicastOpt = new byte[] { discoveryAddr[0], discoveryAddr[1], discoveryAddr[2], discoveryAddr[3], // WsDiscovery Multicast Address: 239.255.255.250
0, 0, 0, 0 }; // IPAddress.Any: 0.0.0.0
m_udpReceiveClient.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, multicastOpt);
// Create a UdpClient used to send request responses. Set SendTimeout.
m_udpSendClient = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
m_udpSendClient.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
return ChainResult.Continue;
}
/// <summary>
/// Processes a message
/// </summary>
/// <param name="msg">The message being processed.</param>
/// <param name="ctx">The context associated with the message.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnProcessOutputMessage( ref WsMessage msg, BindingContext ctx )
{
if (m_remoteEndpoint == null) throw new Exception();
byte []message = msg.Body as byte[];
if (message == null) return ChainResult.Abort;
System.Ext.Console.Write("UDP Message Sent To: " + m_remoteEndpoint.ToString());
System.Ext.Console.Write(message);
try
{
Random rand = new Random();
for (int i = 0; i < 3; ++i)
{
int backoff = rand.Next(200) + 50; // 50-250
System.Threading.Thread.Sleep(backoff);
m_udpSendClient.SendTo(message, message.Length, SocketFlags.None, m_remoteEndpoint);
}
}
catch
{
return ChainResult.Abort;
}
return ChainResult.Handled;
}
/// <summary>
/// Closes the stream for the UDP transport binding
/// </summary>
/// <param name="stream">The stream for this binding.</param>
/// <param name="ctx">The context associated with the stream for this binding.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnClose( Stream stream, BindingContext ctx )
{
m_udpReceiveClient.Close();
m_udpSendClient.Close();
return ChainResult.Handled;
}
internal ReplyChannel(Binding binding, BindingContext context)
{
this.m_binding = binding;
this.m_context = context;
}
/// <summary>
/// Processes an input message for a specific context
/// </summary>
/// <param name="message">The message to process.</param>
/// <param name="ctx">The context to process the message for.</param>
/// <returns><c>true</c> if the processing was succesfull, <c>false</c>otherwise.</returns>
public bool ProcessInputMessage(ref WsMessage message, BindingContext ctx)
{
if (m_Next != null)
{
if(!m_Next.ProcessInputMessage( ref message, ctx ))
{
return false;
}
}
return this.OnProcessInputMessage(ref message, ctx) != ChainResult.Abort;
}
/// <summary>
/// Closes the stream for the HTTP transport binding
/// </summary>
/// <param name="stream">The stream for this binding.</param>
/// <param name="ctx">The context associated with the stream for this binding.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnClose( Stream stream, BindingContext ctx )
{
if (ctx is ServerBindingContext)
{
if (ctx.ContextObject != null && ctx.ContextObject is HttpListenerContext)
{
try
{
((HttpListenerContext)ctx.ContextObject).Close(ctx.CloseTimeout.Seconds);
}
catch
{
}
ctx.ContextObject = null;
}
if (m_httpListener != null)
{
try
{
m_httpListener.Close();
}
catch
{
}
m_httpListener = null;
}
}
else
{
if(ctx.ContextObject != null && ctx.ContextObject is IDisposable)
{
try
{
((IDisposable)ctx.ContextObject).Dispose();
}
catch
{
}
ctx.ContextObject = null;
}
}
return ChainResult.Handled;
}
private WsMessage ReceiveMessage( object deserializer, BindingContext ctx )
{
WsMessage msg = new WsMessage( new WsWsaHeader(), null, WsPrefix.None );
msg.Deserializer = deserializer;
// reset the binding properties as they likely were modified during the Send
ctx.BindingProperties = (ArrayList)m_context.BindingProperties.Clone();
m_binding.Elements.ProcessInputMessage( ref msg, ctx );
return msg;
}
/// <summary>
/// Processes a message
/// </summary>
/// <param name="stream">The message being processed.</param>
/// <param name="ctx">The context associated with the message.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnProcessInputMessage(ref WsMessage msg, BindingContext ctx)
{
byte[] soapResponse = null;
WebHeaderCollection headers = null;
if(ctx is ClientBindingContext)
{
HttpWebRequest request = ctx.ContextObject as HttpWebRequest;
if(request == null)
{
msg = null;
return ChainResult.Abort;
}
HttpWebResponse resp = request.GetResponse() as HttpWebResponse;
if (resp == null)
{
throw new WebException("", WebExceptionStatus.ReceiveFailure); // No response was received on the HTTP channel
}
try
{
headers = (System.Net.WebHeaderCollection)resp.Headers;
if (resp.ProtocolVersion != HttpVersion.Version11)
{
throw new IOException(); // Invalid http version in response line.
}
if (resp.StatusCode != HttpStatusCode.OK && resp.StatusCode != HttpStatusCode.Accepted)
{
if (resp.ContentType.IndexOf("application/soap+xml") == -1)
{
throw new IOException(); // Bad status code in response
}
}
if (resp.ContentLength > 0)
{
// Return the soap response.
soapResponse = new byte[(int)resp.ContentLength];
Stream respStream = resp.GetResponseStream();
respStream.ReadTimeout = (int)(ctx.ReceiveTimeout.Ticks / TimeSpan.TicksPerMillisecond);
// Now need to read all data. We read in the loop until resp.ContentLength or zero bytes read.
// Zero bytes read means there was error on server and it did not send all data.
int respLength = (int)resp.ContentLength;
for (int totalBytesRead = 0; totalBytesRead < respLength; )
{
int bytesRead = respStream.Read(soapResponse, totalBytesRead, (int)resp.ContentLength - totalBytesRead);
// If nothing is read - means server closed connection or timeout. In this case no retry.
if (bytesRead == 0)
{
break;
}
// Adds number of bytes read on this iteration.
totalBytesRead += bytesRead;
}
headers = resp.Headers;
}
//
// ContentLenght == 0 is OK
//
else if(resp.ContentLength < 0)
{
throw new ProtocolViolationException(); // Invalid http header, content lenght < 0
}
}
finally
{
resp.Dispose();
request.Dispose();
ctx.ContextObject = null;
}
}
else // server waits for messages
{
HttpListenerContext listenerContext;
try
{
if(m_persistConn && ctx.ContextObject != null)
{
listenerContext = (HttpListenerContext)ctx.ContextObject;
listenerContext.Reset();
}
else
{
if (m_httpListener == null)
{
msg = null;
return ChainResult.Abort;
}
listenerContext = m_httpListener.GetContext();
}
if (listenerContext == null)
{
msg = null;
return ChainResult.Abort;
}
ctx.ContextObject = listenerContext;
// The context returned by m_httpListener.GetContext(); can be null in case the service was stopped.
HttpListenerRequest listenerRequest = listenerContext.Request;
HttpListenerResponse listenerResponse = listenerContext.Response;
listenerRequest.InputStream.ReadTimeout = (int)(ctx.ReceiveTimeout.Ticks / TimeSpan.TicksPerMillisecond);
listenerResponse.OutputStream.WriteTimeout = (int)(ctx.SendTimeout.Ticks / TimeSpan.TicksPerMillisecond);
headers = (System.Net.WebHeaderCollection)listenerRequest.Headers;
System.Ext.Console.Write("Request From: " + listenerRequest.RemoteEndPoint.ToString());
// Checks and process headers important for DPWS
if (!ProcessKnownHeaders(listenerContext))
{
msg = null;
return ChainResult.Abort;
}
soapResponse = null;
int messageLength = (int)listenerRequest.ContentLength64;
if (messageLength > 0)
{
// If there is content length for the message, we read it complete.
soapResponse = new byte[messageLength];
for (int offset = 0; offset < messageLength; )
{
int noRead = listenerRequest.InputStream.Read(soapResponse, offset, messageLength - offset);
if (noRead == 0)
{
throw new IOException("Http server got only " + offset + " bytes. Expected to read " + messageLength + " bytes.");
}
offset += noRead;
}
}
else
{
// In this case the message is chunk encoded, but m_httpRequest.InputStream actually does processing.
// So we we read until zero bytes are read.
bool readComplete = false;
int bufferSize = ReadPayload;
soapResponse = new byte[bufferSize];
int offset = 0;
while (!readComplete)
{
while (offset < ReadPayload)
{
int noRead = listenerRequest.InputStream.Read(soapResponse, offset, messageLength - offset);
// If we read zero bytes - means this is end of message. This is how InputStream.Read for chunked encoded data.
if (noRead == 0)
{
readComplete = true;
break;
}
offset += noRead;
}
// If read was not complete - increase the buffer.
if (!readComplete)
{
bufferSize += ReadPayload;
byte[] newMessageBuf = new byte[bufferSize];
Array.Copy(soapResponse, newMessageBuf, offset);
soapResponse = newMessageBuf;
}
}
}
}
catch
{
ctx.ContextObject = null;
throw;
}
}
if(headers != null)
{
string [] keys = headers.AllKeys;
int len = keys.Length;
ArrayList props = ctx.BindingProperties;
for(int i=0; i<len; i++)
{
string key = keys[i];
if(!WebHeaderCollection.IsRestricted(key))
{
props.Add( new BindingProperty( "header", key, headers[key] ) );
}
}
}
System.Ext.Console.Write(soapResponse);
msg.Body = soapResponse;
return ChainResult.Continue;
}
internal ReplyChannel( Binding binding, BindingContext context )
{
this.m_binding = binding;
this.m_context = context;
}
/// <summary>
/// Processes a message
/// </summary>
/// <param name="msg">The message being processed.</param>
/// <param name="ctx">The context associated with the message.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnProcessOutputMessage( ref WsMessage msg, BindingContext ctx )
{
ArrayList props = ctx.BindingProperties;
byte[] message = null;
string contentType = "text/plain";
if (msg != null)
{
message = msg.Body as byte[];
if (msg.BodyParts != null)
{
contentType = "Multipart/Related;boundary=" +
msg.MtomPropeties.boundary +
";type=\"application/xop+xml\";start=\"" +
msg.MtomPropeties.start +
"\";start-info=\"application/soap+xml\"";
ctx.BindingProperties.Add(new BindingProperty("header", HttpKnownHeaderNames.Server, "Microsoft-MF HTTP 1.0"));
ctx.BindingProperties.Add(new BindingProperty("header", HttpKnownHeaderNames.MimeVersion, "1.0"));
ctx.BindingProperties.Add(new BindingProperty("header", HttpKnownHeaderNames.Date, DateTime.Now.ToString()));
}
else
{
contentType = "application/soap+xml; charset=utf-8";
}
}
if(ctx is ClientBindingContext)
{
if (message == null) return ChainResult.Abort;
HttpWebRequest request;
try
{
if(!m_persistConn || ctx.ContextObject == null)
{
request = HttpWebRequest.Create(new Uri(m_transportUri.AbsoluteUri)) as HttpWebRequest;
request.Timeout = (int)(ctx.OpenTimeout.Ticks / TimeSpan.TicksPerMillisecond);
request.ReadWriteTimeout = (int)(ctx.ReceiveTimeout.Ticks / TimeSpan.TicksPerMillisecond);
ctx.ContextObject = request;
}
else
{
request = (HttpWebRequest)ctx.ContextObject;
request.Reset();
}
// Post method
request.Method = "POST";
WebHeaderCollection headers = request.Headers;
request.ContentType = contentType;
request.UserAgent = "MFWsAPI";
request.Headers.Add(HttpKnownHeaderNames.CacheControl, "no-cache");
request.Headers.Add(HttpKnownHeaderNames.Pragma , "no-cache");
if (props != null)
{
int len = props.Count;
for (int i = 0; i < len; i++)
{
BindingProperty prop = (BindingProperty)props[i];
string container = prop.Container;
if (container == "header")
{
headers.Add(prop.Name, (string)prop.Value);
}
else if (container == null || container == "")
{
string name = prop.Name;
if (name == HttpKnownHeaderNames.ContentType)
{
request.ContentType = (string)prop.Value;
}
else if (name == HttpKnownHeaderNames.UserAgent)
{
request.UserAgent = (string)prop.Value;
}
}
}
}
if (message != null)
{
System.Ext.Console.Write("Http message sent: ");
System.Ext.Console.Write(message);
request.ContentLength = message.Length;
using (Stream stream = request.GetRequestStream())
{
// Write soap message
stream.Write(message, 0, message.Length);
// Flush the stream and force a write
stream.Flush();
}
}
}
catch
{
ctx.ContextObject = null;
throw;
}
}
else
{
HttpListenerContext listenerContext = ctx.ContextObject as HttpListenerContext;
if(listenerContext == null) return ChainResult.Abort;
HttpListenerResponse listenerResponse = listenerContext.Response;
if (listenerResponse == null || listenerResponse.OutputStream == null)
{
ctx.ContextObject = null;
return ChainResult.Abort;
}
try
{
StreamWriter streamWriter = new StreamWriter(listenerResponse.OutputStream);
// Write Header, if message is null write accepted
if (message == null || (msg != null && msg.Header != null && msg.Header.IsFaultMessage))
listenerResponse.StatusCode = 202;
else
listenerResponse.StatusCode = 200;
// Check to see it the hosted service is sending mtom
WebHeaderCollection headers = listenerResponse.Headers;
listenerResponse.ContentType = contentType;
bool isChunked = false;
if (props != null)
{
int len = props.Count;
for (int i = 0; i < len; i++)
{
BindingProperty prop = (BindingProperty)props[i];
string container = prop.Container;
string name = prop.Name;
string value = (string)prop.Value;
if (container == "header")
{
if (!isChunked && name == HttpKnownHeaderNames.TransferEncoding && value.ToLower() == "chunked")
{
isChunked = true;
}
headers.Add(name, (string)prop.Value);
}
else if (container == null || container == "")
{
if (name == HttpKnownHeaderNames.ContentType)
{
listenerResponse.ContentType = (string)prop.Value;
System.Ext.Console.Write(HttpKnownHeaderNames.ContentType + ": " + listenerResponse.ContentType);
}
}
}
}
// If chunked encoding is enabled write chunked message else write Content-Length
if (isChunked)
{
// Chunk message
int bufferIndex = 0;
int chunkSize = 0;
int defaultChunkSize = 0xff;
#if DEBUG
byte[] displayBuffer = new byte[defaultChunkSize];
#endif
while (bufferIndex < message.Length)
{
// Calculate chunk size and write to stream
chunkSize = message.Length - bufferIndex < defaultChunkSize ? message.Length - bufferIndex : defaultChunkSize;
streamWriter.WriteLine(chunkSize.ToString("{0:X}"));
System.Ext.Console.Write(chunkSize.ToString("{0:X}"));
// Write chunk
streamWriter.WriteBytes(message, bufferIndex, chunkSize);
streamWriter.WriteLine();
#if DEBUG
Array.Copy(message, bufferIndex, displayBuffer, 0, chunkSize);
System.Ext.Console.Write(displayBuffer, bufferIndex, chunkSize);
#endif
// Adjust buffer index
bufferIndex = bufferIndex + chunkSize;
}
// Write 0 length and blank line
streamWriter.WriteLine("0");
streamWriter.WriteLine();
System.Ext.Console.Write("0");
System.Ext.Console.Write("");
}
else
{
if (message == null)
{
listenerResponse.ContentLength64 = 0;
}
else
{
listenerResponse.ContentLength64 = message.Length;
}
System.Ext.Console.Write("Content Length: " + listenerResponse.ContentLength64);
// If an empty message is returned (i.e. oneway request response) don't send
if (message != null && message.Length > 0)
{
System.Ext.Console.Write(message);
// Write soap message
streamWriter.WriteBytes(message, 0, message.Length);
}
}
// Flush the stream and return
streamWriter.Flush();
}
catch
{
return ChainResult.Abort;
}
finally
{
if (m_persistConn)
{
listenerResponse.Detach();
}
else
{
listenerContext.Close( ctx.CloseTimeout.Seconds );
ctx.ContextObject = null;
}
}
}
return ChainResult.Handled;
}
internal WsMessage ReceiveMessage( BindingContext ctx )
{
WsMessage msg = new WsMessage(new WsWsaHeader(), null, WsPrefix.None);
while(true)
{
try
{
if (!m_binding.Elements.ProcessInputMessage(ref msg, ctx))
{
msg = null;
}
// only need to loop if we received a bad request
break;
}
catch (Faults.WsFaultException ex)
{
WsMessage faultResp = Faults.WsFault.GenerateFaultResponse(ex, ctx.Version);
if (faultResp != null)
{
SendMessage(faultResp, ctx);
}
}
}
return msg;
}
/// <summary>
/// Signaled by the <ref>Open</ref> method to allow subclasses to create a sub-class of Binding Element with specific behaviour
/// </summary>
/// <param name="stream">The stream that is being opened.</param>
/// <param name="ctx">The context for which the stream is being opened.</param>
/// <returns>The handling status for this operation.</returns>
protected virtual ChainResult OnOpen(ref Stream stream, BindingContext ctx) { return ChainResult.Continue; }
/// <summary>
/// Processes a message
/// </summary>
/// <param name="stream">The message being processed.</param>
/// <param name="ctx">The context associated with the message.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnProcessInputMessage(ref WsMessage msg, BindingContext ctx)
{
if(msg == null) return ChainResult.Abort;
ArrayList props = ctx.BindingProperties;
if (props != null)
{
int len = props.Count;
for (int j = 0; j < len; j++)
{
BindingProperty prop = (BindingProperty)props[j];
if (prop.Name == HttpKnownHeaderNames.ContentType)
{
string strContentType = ((string)prop.Value).ToLower();
if (strContentType.IndexOf("multipart/related;") == 0)
{
// Create the mtom header class
msg.MtomPropeties = new WsMtomParams();
// Parse Mtom Content-Type parameters
string[] fields = strContentType.Substring(18).Split(';');
int fieldsLen = fields.Length;
for (int i = 0; i < fieldsLen; ++i)
{
string type = fields[i];
int idx = type.IndexOf('=');
if(idx != -1)
{
string param = type.Substring(0, idx).Trim();
string value = type.Substring(idx + 1).Trim('\"');
switch (param.ToUpper())
{
case "BOUNDARY":
if (param.Length > 72)
throw new ArgumentException("Mime boundary element length exceeded.", "boundary");
msg.MtomPropeties.boundary = value;
break;
case "TYPE":
msg.MtomPropeties.type = value;
break;
case "START":
msg.MtomPropeties.start = value;
break;
case "START-INFO":
msg.MtomPropeties.startInfo = value;
break;
default:
break;
}
}
}
// Check required Mtom fields
if (msg.MtomPropeties.boundary == null || msg.MtomPropeties.type == null || msg.MtomPropeties.start == null)
{
throw new WsFaultException(msg.Header, WsFaultType.WseInvalidMessage);
}
WsMtom mtom = new WsMtom((byte[])msg.Body);
msg.Body = mtom.ParseMessage(msg.MtomPropeties.boundary);
msg.BodyParts = mtom.BodyParts;
}
else if (strContentType.IndexOf("application/soap+xml") != 0)
{
throw new WsFaultException(msg.Header, WsFaultType.WseInvalidMessage);
}
}
}
}
if (msg.Body == null) return ChainResult.Continue;
MemoryStream requestStream = new MemoryStream((byte[])msg.Body);
XmlReader reader = XmlReader.Create(requestStream);
WsWsaHeader hdr = new WsWsaHeader();
reader.ReadStartElement("Envelope", WsWellKnownUri.SoapNamespaceUri);
if(ctx.Version.IncludeSoapHeaders)
{
hdr.ParseHeader(reader, ctx.Version);
}
msg.Header = hdr;
reader.ReadStartElement("Body", WsWellKnownUri.SoapNamespaceUri);
if(msg.Deserializer != null)
{
msg.Body = ((DataContractSerializer)msg.Deserializer).ReadObject(reader);
reader.Dispose();
}
else
{
msg.Reader = reader;
}
return ChainResult.Continue;
}
/// <summary>
/// Signaled by the <ref>Close</ref> method to allow subclasses to create a sub-class of Binding Element with specific behaviour
/// </summary>
/// <param name="stream">The stream that is being closed.</param>
/// <param name="ctx">The context for which the stream is being closed.</param>
/// <returns>The handling status for this operation.</returns>
protected virtual ChainResult OnClose(Stream stream, BindingContext ctx) { return ChainResult.Continue; }
/// <summary>
/// Closes the stream for the UDP transport binding
/// </summary>
/// <param name="stream">The stream for this binding.</param>
/// <param name="ctx">The context associated with the stream for this binding.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnClose( Stream stream, BindingContext ctx )
{
m_udpReceiveClient.Close();
s_udpTimer.Change(-1,-1);
s_udpTimer.Dispose();
return ChainResult.Handled;
}
/// <summary> /// Signaled by the <ref>ProcessInputMessage</ref> method to allow subclasses to create a sub-class of Binding Element with specific behaviour /// </summary> /// <param name="message">The message being processed.</param> /// <param name="ctx">The context associated with the message being processed.</param> /// <returns>The handling status for this operation.</returns> protected abstract ChainResult OnProcessInputMessage(ref WsMessage message, BindingContext ctx);
/// <summary>
/// Processes a message
/// </summary>
/// <param name="msg">The message being processed.</param>
/// <param name="ctx">The context associated with the message.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnProcessOutputMessage( ref WsMessage msg, BindingContext ctx )
{
if (ctx.ContextObject == null) throw new Exception();
byte []message = msg.Body as byte[];
if (message == null) return ChainResult.Abort;
IPEndPoint epRemote = (IPEndPoint)ctx.ContextObject;
if(!m_config.IgnoreRequestsFromThisIp && epRemote.Address == IPAddress.GetDefaultLocalAddress())
{
epRemote = new IPEndPoint(IPAddress.Loopback, epRemote.Port);
}
System.Ext.Console.Write("UDP Message Sent To: " + epRemote.ToString());
System.Ext.Console.Write(message);
try
{
/// Add a UDP repeat record to the current list of UDP responses to be processed
/// by a common timer.
lock (s_repeats)
{
s_repeats.Add(new UdpResend(message, epRemote, 3));
if (s_repeats.Count == 1) s_udpTimer.Change(50, 100);
}
}
catch
{
return ChainResult.Abort;
}
return ChainResult.Handled;
}
private void SendMessage(WsMessage message, BindingContext ctx)
{
m_binding.Elements.ProcessOutputMessage(ref message, ctx);
}
